1 | #include "logger.h"
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2 |
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3 | #include "stb_image.h"
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4 |
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5 | // I think this was for the OpenGL 4 book font file tutorial
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6 | //#define STB_IMAGE_WRITE_IMPLEMENTATION
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7 | //#include "stb_image_write.h"
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8 |
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9 | #define _USE_MATH_DEFINES
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10 |
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11 | #include <glm/mat4x4.hpp>
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12 | #include <glm/gtc/matrix_transform.hpp>
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13 | #include <glm/gtc/type_ptr.hpp>
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14 |
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15 | #include "IMGUI/imgui.h"
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16 | #include "imgui_impl_glfw_gl3.h"
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17 |
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18 | #include <GL/glew.h>
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19 | #include <GLFW/glfw3.h>
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20 |
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21 | #include <cstdio>
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22 | #include <cstdlib>
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23 | #include <ctime>
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24 | #include <iostream>
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25 | #include <fstream>
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26 | #include <sstream>
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27 | #include <cmath>
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28 | #include <string>
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29 | #include <array>
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30 | #include <vector>
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31 | #include <queue>
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32 | #include <map>
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33 |
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34 | using namespace std;
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35 | using namespace glm;
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36 |
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37 | enum State {
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38 | STATE_MAIN_MENU,
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39 | STATE_GAME,
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40 | };
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41 |
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42 | enum Event {
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43 | EVENT_GO_TO_MAIN_MENU,
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44 | EVENT_GO_TO_GAME,
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45 | EVENT_QUIT,
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46 | };
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47 |
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48 | enum ObjectType {
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49 | TYPE_SHIP,
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50 | TYPE_ASTEROID,
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51 | TYPE_LASER,
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52 | };
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53 |
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54 | struct SceneObject {
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55 | unsigned int id;
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56 | ObjectType type;
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57 |
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58 | // Currently, model_transform should only have translate, and rotation and scale need to be done in model_base since
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59 | // they need to be done when the object is at the origin. I should change this to have separate scale, rotate, and translate
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60 | // matrices for each object that can be updated independently and then applied to the object in that order.
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61 | mat4 model_mat, model_base, model_transform;
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62 | mat4 translate_mat; // beginning of doing what's mentioned above
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63 | GLuint shader_program;
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64 | unsigned int num_points;
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65 | GLuint vertex_vbo_offset;
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66 | GLuint ubo_offset;
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67 | vector<GLfloat> points;
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68 | vector<GLfloat> colors;
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69 | vector<GLfloat> texcoords;
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70 | vector<GLfloat> normals;
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71 | vector<GLfloat> selected_colors;
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72 | bool deleted;
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73 | vec3 bounding_center;
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74 | GLfloat bounding_radius;
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75 | };
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76 |
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77 | struct Asteroid : SceneObject {
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78 | float hp;
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79 | };
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80 |
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81 | struct Laser : SceneObject {
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82 | Asteroid* targetAsteroid;
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83 | };
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84 |
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85 | struct EffectOverTime {
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86 | float& effectedValue;
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87 | float startValue;
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88 | double startTime;
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89 | float changePerSecond;
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90 | bool deleted;
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91 | SceneObject* effectedObject;
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92 |
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93 | EffectOverTime(float& effectedValue, float changePerSecond, SceneObject* object)
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94 | : effectedValue(effectedValue), changePerSecond(changePerSecond), effectedObject(object) {
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95 | startValue = effectedValue;
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96 | startTime = glfwGetTime();
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97 | deleted = false;
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98 | }
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99 | };
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100 |
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101 | struct BufferInfo {
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102 | unsigned int vbo_base;
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103 | unsigned int vbo_offset;
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104 | unsigned int vbo_capacity;
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105 | unsigned int ubo_base;
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106 | unsigned int ubo_offset;
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107 | unsigned int ubo_capacity;
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108 | };
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109 |
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110 | void glfw_error_callback(int error, const char* description);
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111 |
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112 | void mouse_button_callback(GLFWwindow* window, int button, int action, int mods);
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113 | void key_callback(GLFWwindow* window, int key, int scancode, int action, int mods);
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114 |
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115 | void APIENTRY debugGlCallback(
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116 | GLenum source,
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117 | GLenum type,
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118 | GLuint id,
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119 | GLenum severity,
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120 | GLsizei length,
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121 | const GLchar* message,
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122 | const void* userParam
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123 | );
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124 |
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125 | bool faceClicked(array<vec3, 3> points, SceneObject* obj, vec4 world_ray, vec4 cam, vec4& click_point);
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126 | bool insideTriangle(vec3 p, array<vec3, 3> triangle_points);
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127 |
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128 | GLuint loadShader(GLenum type, string file);
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129 | GLuint loadShaderProgram(string vertexShaderPath, string fragmentShaderPath);
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130 | unsigned char* loadImage(string file_name, int* x, int* y);
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131 |
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132 | void printVector(string label, vec3& v);
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133 | void print4DVector(string label, vec4& v);
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134 |
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135 | void initObject(SceneObject* obj);
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136 | void addObjectToScene(SceneObject* obj,
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137 | map<GLuint, BufferInfo>& shaderBufferInfo,
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138 | GLuint points_vbo,
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139 | GLuint colors_vbo,
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140 | GLuint selected_colors_vbo,
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141 | GLuint texcoords_vbo,
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142 | GLuint normals_vbo,
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143 | GLuint ubo,
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144 | GLuint model_mat_idx_vbo,
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145 | GLuint asteroid_sp);
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146 | void removeObjectFromScene(SceneObject& obj, GLuint ubo);
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147 |
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148 | void calculateObjectBoundingBox(SceneObject* obj);
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149 |
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150 | void initializeBuffers(
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151 | GLuint* points_vbo,
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152 | GLuint* colors_vbo,
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153 | GLuint* selected_colors_vbo,
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154 | GLuint* texcoords_vbo,
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155 | GLuint* normals_vbo,
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156 | GLuint* ubo,
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157 | GLuint* model_mat_idx_vbo);
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158 |
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159 | void populateBuffers(vector<SceneObject*>& objects,
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160 | map<GLuint, BufferInfo>& shaderBufferInfo,
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161 | GLuint points_vbo,
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162 | GLuint colors_vbo,
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163 | GLuint selected_colors_vbo,
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164 | GLuint texcoords_vbo,
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165 | GLuint normals_vbo,
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166 | GLuint ubo,
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167 | GLuint model_mat_idx_vbo,
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168 | GLuint asteroid_sp);
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169 |
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170 | void copyObjectDataToBuffers(SceneObject& obj,
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171 | map<GLuint, BufferInfo>& shaderBufferInfo,
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172 | GLuint points_vbo,
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173 | GLuint colors_vbo,
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174 | GLuint selected_colors_vbo,
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175 | GLuint texcoords_vbo,
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176 | GLuint normals_vbo,
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177 | GLuint ubo,
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178 | GLuint model_mat_idx_vbo,
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179 | GLuint asteroid_sp);
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180 |
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181 | void transformObject(SceneObject& obj, const mat4& transform, GLuint ubo);
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182 |
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183 | SceneObject* createShip(GLuint shader);
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184 | Asteroid* createAsteroid(vec3 pos, GLuint shader);
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185 | Laser* createLaser(vec3 start, vec3 end, vec3 color, GLfloat width, GLuint laser_sp);
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186 |
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187 | void translateLaser(Laser* laser, const vec3& translation, GLuint ubo);
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188 | void updateLaserTarget(Laser* laser, vector<SceneObject*>& objects, GLuint points_vbo, GLuint asteroid_sp);
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189 | bool getLaserAndAsteroidIntersection(vec3& start, vec3& end, SceneObject& asteroid, vec3& intersection);
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190 |
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191 | void renderMainMenu();
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192 | void renderMainMenuGui();
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193 |
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194 | void renderScene(map<GLuint, BufferInfo>& shaderBufferInfo,
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195 | GLuint color_sp, GLuint asteroid_sp, GLuint texture_sp, GLuint laser_sp,
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196 | GLuint color_vao, GLuint asteroid_vao, GLuint texture_vao, GLuint laser_vao,
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197 | GLuint colors_vbo, GLuint selected_colors_vbo,
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198 | SceneObject* selectedObject);
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199 | void renderSceneGui();
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200 |
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201 | float getRandomNum(float low, float high);
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202 |
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203 | #define NUM_KEYS (512)
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204 | #define ONE_DEG_IN_RAD ((2.0f * M_PI) / 360.0f) // 0.017444444 (maybe make this a const instead)
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205 |
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206 | const int KEY_STATE_UNCHANGED = -1;
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207 | const bool FULLSCREEN = false;
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208 | unsigned int MAX_UNIFORMS = 0; // Requires OpenGL constants only available at runtime, so it can't be const
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209 |
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210 | int key_state[NUM_KEYS];
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211 | bool key_down[NUM_KEYS];
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212 |
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213 | int width = 640;
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214 | int height = 480;
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215 |
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216 | double fps;
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217 |
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218 | vec3 cam_pos;
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219 |
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220 | mat4 view_mat;
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221 | mat4 proj_mat;
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222 |
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223 | vector<SceneObject*> objects;
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224 | queue<Event> events;
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225 | vector<EffectOverTime*> effects;
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226 |
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227 | SceneObject* clickedObject = NULL;
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228 | SceneObject* selectedObject = NULL;
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229 |
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230 | float NEAR_CLIP = 0.1f;
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231 | float FAR_CLIP = 100.0f;
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232 |
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233 | // TODO: Should really have some array or struct of UI-related variables
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234 | bool isRunning = true;
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235 |
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236 | ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
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237 |
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238 | Laser* leftLaser = NULL;
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239 | EffectOverTime* leftLaserEffect = NULL;
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240 |
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241 | Laser* rightLaser = NULL;
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242 | EffectOverTime* rightLaserEffect = NULL;
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243 |
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244 | /*
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245 | * TODO: Asteroid and ship movement currently depend on framerate, fix this in a generic/reusable way
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246 | * Disabling vsync is a great way to test this
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247 | */
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248 |
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249 | int main(int argc, char* argv[]) {
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250 | cout << "New OpenGL Game" << endl;
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251 |
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252 | if (!restart_gl_log()) {}
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253 | gl_log("starting GLFW\n%s\n", glfwGetVersionString());
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254 |
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255 | glfwSetErrorCallback(glfw_error_callback);
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256 | if (!glfwInit()) {
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257 | fprintf(stderr, "ERROR: could not start GLFW3\n");
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258 | return 1;
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259 | }
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260 |
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261 | #ifdef __APPLE__
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262 | glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
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263 | glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
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264 | glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE);
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265 | glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
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266 | #endif
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267 |
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268 | GLFWwindow* window = NULL;
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269 | GLFWmonitor* mon = NULL;
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270 |
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271 | glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 4);
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272 | glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
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273 | glfwWindowHint(GLFW_SAMPLES, 16);
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274 | glfwWindowHint(GLFW_OPENGL_DEBUG_CONTEXT, true);
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275 |
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276 | if (FULLSCREEN) {
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277 | mon = glfwGetPrimaryMonitor();
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278 | const GLFWvidmode* vmode = glfwGetVideoMode(mon);
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279 |
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280 | width = vmode->width;
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281 | height = vmode->height;
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282 | cout << "Fullscreen resolution " << vmode->width << "x" << vmode->height << endl;
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283 | }
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284 | window = glfwCreateWindow(width, height, "New OpenGL Game", mon, NULL);
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285 |
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286 | if (!window) {
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287 | fprintf(stderr, "ERROR: could not open window with GLFW3\n");
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288 | glfwTerminate();
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289 | return 1;
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290 | }
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291 |
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292 | glfwMakeContextCurrent(window);
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293 | glewExperimental = GL_TRUE;
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294 | glewInit();
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295 |
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296 | if (GLEW_KHR_debug) {
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297 | cout << "FOUND GLEW debug extension" << endl;
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298 | glEnable(GL_DEBUG_OUTPUT_SYNCHRONOUS);
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299 | glDebugMessageCallback((GLDEBUGPROC)debugGlCallback, nullptr);
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300 | cout << "Bound debug callback" << endl;
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301 | }
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302 |
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303 | srand(time(0));
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304 |
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305 | /*
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306 | * RENDERING ALGORITHM NOTES:
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307 | *
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308 | * Basically, I need to split my objects into groups, so that each group fits into
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309 | * GL_MAX_UNIFORM_BLOCK_SIZE. I need to have an offset and a size for each group.
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310 | * Getting the offset is straitforward. The size may as well be GL_MAX_UNIFORM_BLOCK_SIZE
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311 | * for each group, since it seems that smaller sizes just round up to the nearest GL_MAX_UNIFORM_BLOCK_SIZE
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312 | *
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313 | * I'll need to have a loop inside my render loop that calls glBindBufferRange(GL_UNIFORM_BUFFER, ...
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314 | * for every 1024 objects and then draws all those objects with one glDraw call.
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315 | *
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316 | * Since I currently have very few objects, I'll wait to implement this until I have
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317 | * a reasonable number of objects always using the same shader.
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318 | */
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319 |
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320 | GLint UNIFORM_BUFFER_OFFSET_ALIGNMENT, MAX_UNIFORM_BLOCK_SIZE;
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321 | glGetIntegerv(GL_UNIFORM_BUFFER_OFFSET_ALIGNMENT, &UNIFORM_BUFFER_OFFSET_ALIGNMENT);
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322 | glGetIntegerv(GL_MAX_UNIFORM_BLOCK_SIZE, &MAX_UNIFORM_BLOCK_SIZE);
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323 |
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324 | MAX_UNIFORMS = MAX_UNIFORM_BLOCK_SIZE / sizeof(mat4);
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325 |
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326 | cout << "UNIFORM_BUFFER_OFFSET_ALIGNMENT: " << UNIFORM_BUFFER_OFFSET_ALIGNMENT << endl;
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327 | cout << "MAX_UNIFORMS: " << MAX_UNIFORMS << endl;
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328 |
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329 | // Setup Dear ImGui binding
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330 | IMGUI_CHECKVERSION();
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331 | ImGui::CreateContext();
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332 | ImGuiIO& io = ImGui::GetIO(); (void)io;
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333 | //io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard; // Enable Keyboard Controls
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334 | //io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad; // Enable Gamepad Controls
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335 | ImGui_ImplGlfwGL3_Init(window, true);
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336 |
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337 | // Setup style
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338 | ImGui::StyleColorsDark();
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339 | //ImGui::StyleColorsClassic();
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340 |
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341 | glfwSetMouseButtonCallback(window, mouse_button_callback);
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342 | glfwSetKeyCallback(window, key_callback);
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343 |
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344 | const GLubyte* renderer = glGetString(GL_RENDERER);
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345 | const GLubyte* version = glGetString(GL_VERSION);
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346 | cout << "Renderer: " << renderer << endl;
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347 | cout << "OpenGL version supported " << version << endl;
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348 |
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349 | glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
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350 |
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351 | glEnable(GL_DEPTH_TEST);
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352 | glDepthFunc(GL_LESS);
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353 |
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354 | glEnable(GL_CULL_FACE);
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355 | // glCullFace(GL_BACK);
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356 | // glFrontFace(GL_CW);
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357 |
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358 | /*
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359 | int x, y;
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360 | unsigned char* texImage = loadImage("test.png", &x, &y);
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361 | if (texImage) {
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362 | cout << "Yay, I loaded an image!" << endl;
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363 | cout << x << endl;
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364 | cout << y << endl;
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365 | printf("first 4 bytes are: %i %i %i %i\n", texImage[0], texImage[1], texImage[2], texImage[3]);
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366 | }
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367 |
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368 | GLuint testTex = 0;
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369 | glGenTextures(1, &testTex);
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370 | glActiveTexture(GL_TEXTURE0);
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371 | glBindTexture(GL_TEXTURE_2D, testTex);
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372 | glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, x, y, 0, GL_RGBA, GL_UNSIGNED_BYTE, texImage);
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373 |
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374 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
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375 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
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376 | glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
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377 | glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
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378 | */
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379 |
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380 | int x, y;
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381 | unsigned char* texImage = loadImage("laser.png", &x, &y);
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382 | if (texImage) {
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383 | cout << "Laser texture loaded successfully!" << endl;
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384 | cout << x << endl;
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385 | cout << y << endl;
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386 | printf("first 4 bytes are: %i %i %i %i\n", texImage[0], texImage[1], texImage[2], texImage[3]);
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387 | }
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388 |
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389 | GLuint laserTex = 0;
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390 | glGenTextures(1, &laserTex);
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391 | glActiveTexture(GL_TEXTURE0);
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392 | glBindTexture(GL_TEXTURE_2D, laserTex);
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393 | glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, x, y, 0, GL_RGBA, GL_UNSIGNED_BYTE, texImage);
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394 |
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395 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
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396 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
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397 | glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
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398 | glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
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399 |
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400 | /* RENDERING ALGORITHM
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401 | *
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402 | * Create a separate vbo for each of the following things:
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403 | * - points
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404 | * - colors
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405 | * - texture coordinates
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406 | * - selected colors
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407 | * - normals
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408 | * - indices into a ubo that stores a model matrix for each object
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409 | *
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410 | * Also, make a model matrix ubo, the entirety of which will be passed to the vertex shader.
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411 | * The vbo containing the correct index into the ubo (mentioned above) will be used to select
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412 | * the right model matrix for each point. The index in the vbo will be the saem for all points
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413 | * of any given object.
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414 | *
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415 | * There will be two shader programs for now, one for draing colored objects, and another for
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416 | * drawing textured ones. The points, normals, and model mat ubo indices will be passed to both
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417 | * shaders, while the colors vbo will only be passed to the colors shader, and the texcoords vbo
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418 | * only to the texture shader.
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419 | *
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420 | * Right now, the currently selected object is drawn using one color (specified in the selected
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421 | * colors vbo) regardless of whether it is normally rendering using colors or a texture. The selected
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422 | * object is rendering by binding the selected colors vbo in place of the colors vbo and using the colors
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423 | * shader. Then, the selected object is redrawn along with all other objects, but the depth buffer test
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424 | * prevents the unselected version of the object from appearing on the screen. This lets me render all the
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425 | * objects that use a particular shader using one glDrawArrays() call.
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426 | */
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427 |
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428 | map<GLuint, BufferInfo> shaderBufferInfo;
|
---|
429 |
|
---|
430 | // TODO: Rename color_sp to ship_sp and comment out texture_sp)
|
---|
431 |
|
---|
432 | GLuint color_sp = loadShaderProgram("./ship.vert", "./ship.frag");
|
---|
433 | GLuint asteroid_sp = loadShaderProgram("./asteroid.vert", "./asteroid.frag");
|
---|
434 | GLuint texture_sp = loadShaderProgram("./texture.vert", "./texture.frag");
|
---|
435 | GLuint laser_sp = loadShaderProgram("./laser.vert", "./laser.frag");
|
---|
436 |
|
---|
437 | shaderBufferInfo[color_sp] = BufferInfo();
|
---|
438 | shaderBufferInfo[asteroid_sp] = BufferInfo();
|
---|
439 | shaderBufferInfo[texture_sp] = BufferInfo();
|
---|
440 | shaderBufferInfo[laser_sp] = BufferInfo();
|
---|
441 |
|
---|
442 | cam_pos = vec3(0.0f, 0.0f, 2.0f);
|
---|
443 | float cam_yaw = 0.0f * 2.0f * 3.14159f / 360.0f;
|
---|
444 | float cam_pitch = -50.0f * 2.0f * 3.14159f / 360.0f;
|
---|
445 |
|
---|
446 | // player ship
|
---|
447 | SceneObject* ship = createShip(color_sp);
|
---|
448 | objects.push_back(ship);
|
---|
449 |
|
---|
450 | vector<SceneObject>::iterator obj_it;
|
---|
451 |
|
---|
452 | GLuint points_vbo, colors_vbo, selected_colors_vbo, texcoords_vbo,
|
---|
453 | normals_vbo, ubo, model_mat_idx_vbo;
|
---|
454 |
|
---|
455 | initializeBuffers(
|
---|
456 | &points_vbo,
|
---|
457 | &colors_vbo,
|
---|
458 | &selected_colors_vbo,
|
---|
459 | &texcoords_vbo,
|
---|
460 | &normals_vbo,
|
---|
461 | &ubo,
|
---|
462 | &model_mat_idx_vbo);
|
---|
463 |
|
---|
464 | populateBuffers(objects,
|
---|
465 | shaderBufferInfo,
|
---|
466 | points_vbo,
|
---|
467 | colors_vbo,
|
---|
468 | selected_colors_vbo,
|
---|
469 | texcoords_vbo,
|
---|
470 | normals_vbo,
|
---|
471 | ubo,
|
---|
472 | model_mat_idx_vbo,
|
---|
473 | asteroid_sp);
|
---|
474 |
|
---|
475 | GLuint color_vao = 0;
|
---|
476 | glGenVertexArrays(1, &color_vao);
|
---|
477 | glBindVertexArray(color_vao);
|
---|
478 |
|
---|
479 | glEnableVertexAttribArray(0);
|
---|
480 | glEnableVertexAttribArray(1);
|
---|
481 | glEnableVertexAttribArray(2);
|
---|
482 | glEnableVertexAttribArray(3);
|
---|
483 |
|
---|
484 | glBindBuffer(GL_ARRAY_BUFFER, points_vbo);
|
---|
485 | glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 0, 0);
|
---|
486 |
|
---|
487 | // Comment these two lines out when I want to use selected colors
|
---|
488 | glBindBuffer(GL_ARRAY_BUFFER, colors_vbo);
|
---|
489 | glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, 0, 0);
|
---|
490 |
|
---|
491 | glBindBuffer(GL_ARRAY_BUFFER, normals_vbo);
|
---|
492 | glVertexAttribPointer(2, 3, GL_FLOAT, GL_FALSE, 0, 0);
|
---|
493 |
|
---|
494 | glBindBuffer(GL_ARRAY_BUFFER, model_mat_idx_vbo);
|
---|
495 | glVertexAttribIPointer(3, 1, GL_UNSIGNED_INT, 0, 0);
|
---|
496 |
|
---|
497 | GLuint asteroid_vao = 0;
|
---|
498 | glGenVertexArrays(1, &asteroid_vao);
|
---|
499 | glBindVertexArray(asteroid_vao);
|
---|
500 |
|
---|
501 | glEnableVertexAttribArray(0);
|
---|
502 | glEnableVertexAttribArray(1);
|
---|
503 | glEnableVertexAttribArray(2);
|
---|
504 | glEnableVertexAttribArray(3);
|
---|
505 |
|
---|
506 | glBindBuffer(GL_ARRAY_BUFFER, points_vbo);
|
---|
507 | glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 0, 0);
|
---|
508 |
|
---|
509 | glBindBuffer(GL_ARRAY_BUFFER, colors_vbo);
|
---|
510 | glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, 0, 0);
|
---|
511 |
|
---|
512 | glBindBuffer(GL_ARRAY_BUFFER, normals_vbo);
|
---|
513 | glVertexAttribPointer(2, 3, GL_FLOAT, GL_FALSE, 0, 0);
|
---|
514 |
|
---|
515 | glBindBuffer(GL_ARRAY_BUFFER, model_mat_idx_vbo);
|
---|
516 | glVertexAttribIPointer(3, 1, GL_UNSIGNED_INT, 0, 0);
|
---|
517 |
|
---|
518 | GLuint texture_vao = 0;
|
---|
519 | glGenVertexArrays(1, &texture_vao);
|
---|
520 | glBindVertexArray(texture_vao);
|
---|
521 |
|
---|
522 | glEnableVertexAttribArray(0);
|
---|
523 | glEnableVertexAttribArray(1);
|
---|
524 | glEnableVertexAttribArray(2);
|
---|
525 | glEnableVertexAttribArray(3);
|
---|
526 |
|
---|
527 | glBindBuffer(GL_ARRAY_BUFFER, points_vbo);
|
---|
528 | glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 0, 0);
|
---|
529 |
|
---|
530 | glBindBuffer(GL_ARRAY_BUFFER, texcoords_vbo);
|
---|
531 | glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 0, 0);
|
---|
532 |
|
---|
533 | glBindBuffer(GL_ARRAY_BUFFER, normals_vbo);
|
---|
534 | glVertexAttribPointer(2, 3, GL_FLOAT, GL_FALSE, 0, 0);
|
---|
535 |
|
---|
536 | glBindBuffer(GL_ARRAY_BUFFER, model_mat_idx_vbo);
|
---|
537 | glVertexAttribIPointer(3, 1, GL_UNSIGNED_INT, 0, 0);
|
---|
538 |
|
---|
539 | GLuint laser_vao = 0;
|
---|
540 | glGenVertexArrays(1, &laser_vao);
|
---|
541 | glBindVertexArray(laser_vao);
|
---|
542 |
|
---|
543 | glEnableVertexAttribArray(0);
|
---|
544 | glEnableVertexAttribArray(1);
|
---|
545 | glEnableVertexAttribArray(2);
|
---|
546 |
|
---|
547 | glBindBuffer(GL_ARRAY_BUFFER, points_vbo);
|
---|
548 | glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 0, 0);
|
---|
549 |
|
---|
550 | glBindBuffer(GL_ARRAY_BUFFER, texcoords_vbo);
|
---|
551 | glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 0, 0);
|
---|
552 |
|
---|
553 | glBindBuffer(GL_ARRAY_BUFFER, model_mat_idx_vbo);
|
---|
554 | glVertexAttribIPointer(2, 1, GL_UNSIGNED_INT, 0, 0);
|
---|
555 |
|
---|
556 | float cam_speed = 1.0f;
|
---|
557 | float cam_yaw_speed = 60.0f*ONE_DEG_IN_RAD;
|
---|
558 | float cam_pitch_speed = 60.0f*ONE_DEG_IN_RAD;
|
---|
559 |
|
---|
560 | // glm::lookAt can create the view matrix
|
---|
561 | // glm::perspective can create the projection matrix
|
---|
562 |
|
---|
563 | mat4 T = translate(mat4(1.0f), vec3(-cam_pos.x, -cam_pos.y, -cam_pos.z));
|
---|
564 | mat4 yaw_mat = rotate(mat4(1.0f), -cam_yaw, vec3(0.0f, 1.0f, 0.0f));
|
---|
565 | mat4 pitch_mat = rotate(mat4(1.0f), -cam_pitch, vec3(1.0f, 0.0f, 0.0f));
|
---|
566 | mat4 R = pitch_mat * yaw_mat;
|
---|
567 | view_mat = R*T;
|
---|
568 |
|
---|
569 | // TODO: Create a function to construct the projection matrix
|
---|
570 | // (Maybe I should just use glm::perspective, after making sure it matches what I have now)
|
---|
571 | float fov = 67.0f * ONE_DEG_IN_RAD;
|
---|
572 | float aspect = (float)width / (float)height;
|
---|
573 |
|
---|
574 | float range = tan(fov * 0.5f) * NEAR_CLIP;
|
---|
575 | float Sx = NEAR_CLIP / (range * aspect);
|
---|
576 | float Sy = NEAR_CLIP / range;
|
---|
577 | float Sz = -(FAR_CLIP + NEAR_CLIP) / (FAR_CLIP - NEAR_CLIP);
|
---|
578 | float Pz = -(2.0f * FAR_CLIP * NEAR_CLIP) / (FAR_CLIP - NEAR_CLIP);
|
---|
579 |
|
---|
580 | float proj_arr[] = {
|
---|
581 | Sx, 0.0f, 0.0f, 0.0f,
|
---|
582 | 0.0f, Sy, 0.0f, 0.0f,
|
---|
583 | 0.0f, 0.0f, Sz, -1.0f,
|
---|
584 | 0.0f, 0.0f, Pz, 0.0f,
|
---|
585 | };
|
---|
586 | proj_mat = make_mat4(proj_arr);
|
---|
587 |
|
---|
588 | GLuint ub_binding_point = 0;
|
---|
589 |
|
---|
590 | // TODO: Replace test_loc and mat_loc with more descriptive names
|
---|
591 | GLuint view_test_loc = glGetUniformLocation(color_sp, "view");
|
---|
592 | GLuint proj_test_loc = glGetUniformLocation(color_sp, "proj");
|
---|
593 | GLuint color_sp_models_ub_index = glGetUniformBlockIndex(color_sp, "models");
|
---|
594 |
|
---|
595 | GLuint asteroid_view_mat_loc = glGetUniformLocation(asteroid_sp, "view");
|
---|
596 | GLuint asteroid_proj_mat_loc = glGetUniformLocation(asteroid_sp, "proj");
|
---|
597 | GLuint asteroid_sp_models_ub_index = glGetUniformBlockIndex(asteroid_sp, "models");
|
---|
598 | //GLuint asteroid_sp_hp_ub_index = glGetUniformBlockIndex(asteroid_sp, "hp_uniform");
|
---|
599 |
|
---|
600 | GLuint view_mat_loc = glGetUniformLocation(texture_sp, "view");
|
---|
601 | GLuint proj_mat_loc = glGetUniformLocation(texture_sp, "proj");
|
---|
602 | GLuint texture_sp_models_ub_index = glGetUniformBlockIndex(texture_sp, "models");
|
---|
603 |
|
---|
604 | GLuint laser_view_mat_loc = glGetUniformLocation(laser_sp, "view");
|
---|
605 | GLuint laser_proj_mat_loc = glGetUniformLocation(laser_sp, "proj");
|
---|
606 | GLuint laser_color_loc = glGetUniformLocation(laser_sp, "laser_color");
|
---|
607 | GLuint laser_sp_models_ub_index = glGetUniformBlockIndex(laser_sp, "models");
|
---|
608 |
|
---|
609 |
|
---|
610 | glUseProgram(color_sp);
|
---|
611 | glUniformMatrix4fv(view_test_loc, 1, GL_FALSE, value_ptr(view_mat));
|
---|
612 | glUniformMatrix4fv(proj_test_loc, 1, GL_FALSE, value_ptr(proj_mat));
|
---|
613 |
|
---|
614 | glUniformBlockBinding(color_sp, color_sp_models_ub_index, ub_binding_point);
|
---|
615 | glBindBufferRange(GL_UNIFORM_BUFFER, ub_binding_point, ubo, 0, GL_MAX_UNIFORM_BLOCK_SIZE);
|
---|
616 |
|
---|
617 |
|
---|
618 | glUseProgram(asteroid_sp);
|
---|
619 | glUniformMatrix4fv(asteroid_view_mat_loc, 1, GL_FALSE, value_ptr(view_mat));
|
---|
620 | glUniformMatrix4fv(asteroid_proj_mat_loc, 1, GL_FALSE, value_ptr(proj_mat));
|
---|
621 |
|
---|
622 | glUniformBlockBinding(asteroid_sp, asteroid_sp_models_ub_index, ub_binding_point);
|
---|
623 | glBindBufferRange(GL_UNIFORM_BUFFER, ub_binding_point, ubo, 0, GL_MAX_UNIFORM_BLOCK_SIZE);
|
---|
624 |
|
---|
625 |
|
---|
626 | glUseProgram(texture_sp);
|
---|
627 | glUniformMatrix4fv(view_mat_loc, 1, GL_FALSE, value_ptr(view_mat));
|
---|
628 | glUniformMatrix4fv(proj_mat_loc, 1, GL_FALSE, value_ptr(proj_mat));
|
---|
629 |
|
---|
630 | glUniformBlockBinding(texture_sp, texture_sp_models_ub_index, ub_binding_point);
|
---|
631 | glBindBufferRange(GL_UNIFORM_BUFFER, ub_binding_point, ubo, 0, GL_MAX_UNIFORM_BLOCK_SIZE);
|
---|
632 |
|
---|
633 |
|
---|
634 | glUseProgram(laser_sp);
|
---|
635 | glUniformMatrix4fv(laser_view_mat_loc, 1, GL_FALSE, value_ptr(view_mat));
|
---|
636 | glUniformMatrix4fv(laser_proj_mat_loc, 1, GL_FALSE, value_ptr(proj_mat));
|
---|
637 | glUniform3f(laser_color_loc, 0.2f, 1.0f, 0.2f);
|
---|
638 |
|
---|
639 | glUniformBlockBinding(laser_sp, laser_sp_models_ub_index, ub_binding_point);
|
---|
640 | glBindBufferRange(GL_UNIFORM_BUFFER, ub_binding_point, ubo, 0, GL_MAX_UNIFORM_BLOCK_SIZE);
|
---|
641 |
|
---|
642 |
|
---|
643 | bool cam_moved = false;
|
---|
644 |
|
---|
645 | int frame_count = 0;
|
---|
646 | double elapsed_seconds_fps = 0.0f;
|
---|
647 | double elapsed_seconds_spawn = 0.0f;
|
---|
648 | double previous_seconds = glfwGetTime();
|
---|
649 |
|
---|
650 | // This draws wireframes. Useful for seeing separate faces and occluded objects.
|
---|
651 | //glPolygonMode(GL_FRONT, GL_LINE);
|
---|
652 |
|
---|
653 | // disable vsync to see real framerate
|
---|
654 | //glfwSwapInterval(0);
|
---|
655 |
|
---|
656 | State curState = STATE_MAIN_MENU;
|
---|
657 |
|
---|
658 | while (!glfwWindowShouldClose(window) && isRunning) {
|
---|
659 | double current_seconds = glfwGetTime();
|
---|
660 | double elapsed_seconds = current_seconds - previous_seconds;
|
---|
661 | previous_seconds = current_seconds;
|
---|
662 |
|
---|
663 | elapsed_seconds_fps += elapsed_seconds;
|
---|
664 | if (elapsed_seconds_fps > 0.25f) {
|
---|
665 | fps = (double)frame_count / elapsed_seconds_fps;
|
---|
666 |
|
---|
667 | frame_count = 0;
|
---|
668 | elapsed_seconds_fps = 0.0f;
|
---|
669 | }
|
---|
670 |
|
---|
671 | frame_count++;
|
---|
672 |
|
---|
673 | // Handle events
|
---|
674 |
|
---|
675 | clickedObject = NULL;
|
---|
676 |
|
---|
677 | // reset the all key states to KEY_STATE_UNCHANGED (something the GLFW key callback can never return)
|
---|
678 | // so that GLFW_PRESS and GLFW_RELEASE are only detected once
|
---|
679 | // TODO: Change this if we ever need to act on GLFW_REPEAT (which is when a key is held down
|
---|
680 | // continuously for a period of time)
|
---|
681 | fill(key_state, key_state + NUM_KEYS, KEY_STATE_UNCHANGED);
|
---|
682 |
|
---|
683 | glfwPollEvents();
|
---|
684 |
|
---|
685 | while (!events.empty()) {
|
---|
686 | switch (events.front()) {
|
---|
687 | case EVENT_GO_TO_MAIN_MENU:
|
---|
688 | curState = STATE_MAIN_MENU;
|
---|
689 | break;
|
---|
690 | case EVENT_GO_TO_GAME:
|
---|
691 | curState = STATE_GAME;
|
---|
692 | break;
|
---|
693 | case EVENT_QUIT:
|
---|
694 | isRunning = false;
|
---|
695 | break;
|
---|
696 | }
|
---|
697 | events.pop();
|
---|
698 | }
|
---|
699 |
|
---|
700 | if (curState == STATE_GAME) {
|
---|
701 |
|
---|
702 | elapsed_seconds_spawn += elapsed_seconds;
|
---|
703 | if (elapsed_seconds_spawn > 0.5f) {
|
---|
704 | SceneObject* obj = createAsteroid(vec3(getRandomNum(-1.3f, 1.3f), -1.2f, getRandomNum(-5.5f, -4.5f)), asteroid_sp);
|
---|
705 | addObjectToScene(obj, shaderBufferInfo,
|
---|
706 | points_vbo,
|
---|
707 | colors_vbo,
|
---|
708 | selected_colors_vbo,
|
---|
709 | texcoords_vbo,
|
---|
710 | normals_vbo,
|
---|
711 | ubo,
|
---|
712 | model_mat_idx_vbo,
|
---|
713 | asteroid_sp);
|
---|
714 |
|
---|
715 | elapsed_seconds_spawn -= 0.5f;
|
---|
716 | }
|
---|
717 |
|
---|
718 | /*
|
---|
719 | if (clickedObject == &objects[0]) {
|
---|
720 | selectedObject = &objects[0];
|
---|
721 | }
|
---|
722 | if (clickedObject == &objects[1]) {
|
---|
723 | selectedObject = &objects[1];
|
---|
724 | }
|
---|
725 | */
|
---|
726 |
|
---|
727 | /*
|
---|
728 | if (key_state[GLFW_KEY_SPACE] == GLFW_PRESS) {
|
---|
729 | transformObject(objects[1], translate(mat4(1.0f), vec3(0.3f, 0.0f, 0.0f)), ubo);
|
---|
730 | }
|
---|
731 | if (key_down[GLFW_KEY_RIGHT]) {
|
---|
732 | transformObject(objects[2], translate(mat4(1.0f), vec3(0.01f, 0.0f, 0.0f)), ubo);
|
---|
733 | }
|
---|
734 | if (key_down[GLFW_KEY_LEFT]) {
|
---|
735 | transformObject(objects[2], translate(mat4(1.0f), vec3(-0.01f, 0.0f, 0.0f)), ubo);
|
---|
736 | }
|
---|
737 | */
|
---|
738 |
|
---|
739 | if (key_down[GLFW_KEY_RIGHT]) {
|
---|
740 | transformObject(*objects[0], translate(mat4(1.0f), vec3(0.01f, 0.0f, 0.0f)), ubo);
|
---|
741 |
|
---|
742 | if (leftLaser != NULL && !leftLaser->deleted) {
|
---|
743 | translateLaser(leftLaser, vec3(0.01f, 0.0f, 0.0f), ubo);
|
---|
744 | }
|
---|
745 | if (rightLaser != NULL && !rightLaser->deleted) {
|
---|
746 | translateLaser(rightLaser, vec3(0.01f, 0.0f, 0.0f), ubo);
|
---|
747 | }
|
---|
748 | }
|
---|
749 | if (key_down[GLFW_KEY_LEFT]) {
|
---|
750 | transformObject(*objects[0], translate(mat4(1.0f), vec3(-0.01f, 0.0f, 0.0f)), ubo);
|
---|
751 |
|
---|
752 | if (leftLaser != NULL && !leftLaser->deleted) {
|
---|
753 | translateLaser(leftLaser, vec3(-0.01f, 0.0f, 0.0f), ubo);
|
---|
754 | }
|
---|
755 | if (rightLaser != NULL && !rightLaser->deleted) {
|
---|
756 | translateLaser(rightLaser, vec3(-0.01f, 0.0f, 0.0f), ubo);
|
---|
757 | }
|
---|
758 | }
|
---|
759 |
|
---|
760 | if (key_state[GLFW_KEY_Z] == GLFW_PRESS) {
|
---|
761 | vec3 offset(objects[0]->model_transform * vec4(0.0f, 0.0f, 0.0f, 1.0f));
|
---|
762 |
|
---|
763 | leftLaser = createLaser(vec3(-0.21f, -1.19f, 1.76f)+offset, vec3(-0.21f, -1.19f, -3.0f)+offset,
|
---|
764 | vec3(0.0f, 1.0f, 0.0f), 0.03f, laser_sp);
|
---|
765 | addObjectToScene(leftLaser, shaderBufferInfo,
|
---|
766 | points_vbo,
|
---|
767 | colors_vbo,
|
---|
768 | selected_colors_vbo,
|
---|
769 | texcoords_vbo,
|
---|
770 | normals_vbo,
|
---|
771 | ubo,
|
---|
772 | model_mat_idx_vbo,
|
---|
773 | asteroid_sp);
|
---|
774 | } else if (key_state[GLFW_KEY_Z] == GLFW_RELEASE) {
|
---|
775 | removeObjectFromScene(*leftLaser, ubo);
|
---|
776 | }
|
---|
777 |
|
---|
778 | if (key_state[GLFW_KEY_X] == GLFW_PRESS) {
|
---|
779 | vec3 offset(objects[0]->model_transform * vec4(0.0f, 0.0f, 0.0f, 1.0f));
|
---|
780 |
|
---|
781 | rightLaser = createLaser(vec3(0.21f, -1.19f, 1.76f) + offset, vec3(0.21f, -1.19f, -3.0f) + offset,
|
---|
782 | vec3(0.0f, 1.0f, 0.0f), 0.03f, laser_sp);
|
---|
783 | addObjectToScene(rightLaser, shaderBufferInfo,
|
---|
784 | points_vbo,
|
---|
785 | colors_vbo,
|
---|
786 | selected_colors_vbo,
|
---|
787 | texcoords_vbo,
|
---|
788 | normals_vbo,
|
---|
789 | ubo,
|
---|
790 | model_mat_idx_vbo,
|
---|
791 | asteroid_sp);
|
---|
792 | } else if (key_state[GLFW_KEY_X] == GLFW_RELEASE) {
|
---|
793 | removeObjectFromScene(*rightLaser, ubo);
|
---|
794 | }
|
---|
795 |
|
---|
796 | // this code moves the asteroids
|
---|
797 | for (unsigned int i = 0; i < objects.size(); i++) {
|
---|
798 | if (objects[i]->type == TYPE_ASTEROID && !objects[i]->deleted) {
|
---|
799 | transformObject(*objects[i], translate(mat4(1.0f), vec3(0.0f, 0.0f, 0.04f)), ubo);
|
---|
800 |
|
---|
801 | vec3 obj_center = vec3(view_mat * vec4(objects[i]->bounding_center, 1.0f));
|
---|
802 |
|
---|
803 | if ((obj_center.z - objects[i]->bounding_radius) > -NEAR_CLIP) {
|
---|
804 | removeObjectFromScene(*objects[i], ubo);
|
---|
805 | }
|
---|
806 | if (((Asteroid*)objects[i])->hp <= 0) {
|
---|
807 | removeObjectFromScene(*objects[i], ubo);
|
---|
808 | }
|
---|
809 | }
|
---|
810 | }
|
---|
811 |
|
---|
812 | if (leftLaser != NULL && !leftLaser->deleted) {
|
---|
813 | updateLaserTarget(leftLaser, objects, points_vbo, asteroid_sp);
|
---|
814 | }
|
---|
815 | if (rightLaser != NULL && !rightLaser->deleted) {
|
---|
816 | updateLaserTarget(rightLaser, objects, points_vbo, asteroid_sp);
|
---|
817 | }
|
---|
818 | }
|
---|
819 |
|
---|
820 | for (vector<EffectOverTime*>::iterator it = effects.begin(); it != effects.end(); ) {
|
---|
821 | if ((*it)->deleted || (*it)->effectedObject->deleted) {
|
---|
822 | delete *it;
|
---|
823 | it = effects.erase(it);
|
---|
824 | } else {
|
---|
825 | EffectOverTime* eot = *it;
|
---|
826 | eot->effectedValue = eot->startValue + (current_seconds - eot->startTime) * eot->changePerSecond;
|
---|
827 |
|
---|
828 | it++;
|
---|
829 | }
|
---|
830 | }
|
---|
831 |
|
---|
832 | if (key_state[GLFW_KEY_ESCAPE] == GLFW_PRESS) {
|
---|
833 | glfwSetWindowShouldClose(window, 1);
|
---|
834 | }
|
---|
835 |
|
---|
836 | float dist = cam_speed * elapsed_seconds;
|
---|
837 | if (key_down[GLFW_KEY_A]) {
|
---|
838 | vec3 dir = vec3(inverse(R) * vec4(-1.0f, 0.0f, 0.0f, 1.0f));
|
---|
839 | cam_pos += dir * dist;
|
---|
840 |
|
---|
841 | cam_moved = true;
|
---|
842 | }
|
---|
843 | if (key_down[GLFW_KEY_D]) {
|
---|
844 | vec3 dir = vec3(inverse(R) * vec4(1.0f, 0.0f, 0.0f, 1.0f));
|
---|
845 | cam_pos += dir * dist;
|
---|
846 |
|
---|
847 | cam_moved = true;
|
---|
848 | }
|
---|
849 | if (key_down[GLFW_KEY_W]) {
|
---|
850 | vec3 dir = vec3(inverse(R) * vec4(0.0f, 0.0f, -1.0f, 1.0f));
|
---|
851 | cam_pos += dir * dist;
|
---|
852 |
|
---|
853 | cam_moved = true;
|
---|
854 | }
|
---|
855 | if (key_down[GLFW_KEY_S]) {
|
---|
856 | vec3 dir = vec3(inverse(R) * vec4(0.0f, 0.0f, 1.0f, 1.0f));
|
---|
857 | cam_pos += dir * dist;
|
---|
858 |
|
---|
859 | cam_moved = true;
|
---|
860 | }
|
---|
861 | /*
|
---|
862 | if (key_down[GLFW_KEY_LEFT]) {
|
---|
863 | cam_yaw += cam_yaw_speed * elapsed_seconds;
|
---|
864 | cam_moved = true;
|
---|
865 | }
|
---|
866 | if (key_down[GLFW_KEY_RIGHT]) {
|
---|
867 | cam_yaw -= cam_yaw_speed * elapsed_seconds;
|
---|
868 | cam_moved = true;
|
---|
869 | }
|
---|
870 | if (key_down[GLFW_KEY_UP]) {
|
---|
871 | cam_pitch += cam_pitch_speed * elapsed_seconds;
|
---|
872 | cam_moved = true;
|
---|
873 | }
|
---|
874 | if (key_down[GLFW_KEY_DOWN]) {
|
---|
875 | cam_pitch -= cam_pitch_speed * elapsed_seconds;
|
---|
876 | cam_moved = true;
|
---|
877 | }
|
---|
878 | */
|
---|
879 | if (cam_moved && false) { // disable camera movement
|
---|
880 | T = translate(mat4(1.0f), vec3(-cam_pos.x, -cam_pos.y, -cam_pos.z));
|
---|
881 |
|
---|
882 | mat4 yaw_mat = rotate(mat4(1.0f), -cam_yaw, vec3(0.0f, 1.0f, 0.0f));
|
---|
883 | mat4 pitch_mat = rotate(mat4(1.0f), -cam_pitch, vec3(1.0f, 0.0f, 0.0f));
|
---|
884 | R = pitch_mat * yaw_mat;
|
---|
885 |
|
---|
886 | view_mat = R * T;
|
---|
887 |
|
---|
888 | //printVector("cam pos", cam_pos);
|
---|
889 |
|
---|
890 | glUseProgram(color_sp);
|
---|
891 | glUniformMatrix4fv(view_test_loc, 1, GL_FALSE, value_ptr(view_mat));
|
---|
892 |
|
---|
893 | glUseProgram(texture_sp);
|
---|
894 | glUniformMatrix4fv(view_mat_loc, 1, GL_FALSE, value_ptr(view_mat));
|
---|
895 |
|
---|
896 | glUseProgram(laser_sp);
|
---|
897 | glUniformMatrix4fv(laser_view_mat_loc, 1, GL_FALSE, value_ptr(view_mat));
|
---|
898 |
|
---|
899 | cam_moved = false;
|
---|
900 | }
|
---|
901 |
|
---|
902 | // Render scene
|
---|
903 |
|
---|
904 | glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
|
---|
905 |
|
---|
906 | switch (curState) {
|
---|
907 | case STATE_MAIN_MENU:
|
---|
908 | renderMainMenu();
|
---|
909 | renderMainMenuGui();
|
---|
910 | break;
|
---|
911 | case STATE_GAME:
|
---|
912 | renderScene(shaderBufferInfo,
|
---|
913 | color_sp, asteroid_sp, texture_sp, laser_sp,
|
---|
914 | color_vao, asteroid_vao, texture_vao, laser_vao,
|
---|
915 | colors_vbo, selected_colors_vbo,
|
---|
916 | selectedObject);
|
---|
917 | renderSceneGui();
|
---|
918 | break;
|
---|
919 | }
|
---|
920 |
|
---|
921 | glfwSwapBuffers(window);
|
---|
922 | }
|
---|
923 |
|
---|
924 | ImGui_ImplGlfwGL3_Shutdown();
|
---|
925 | ImGui::DestroyContext();
|
---|
926 |
|
---|
927 | glfwDestroyWindow(window);
|
---|
928 | glfwTerminate();
|
---|
929 |
|
---|
930 | // free memory
|
---|
931 |
|
---|
932 | for (vector<SceneObject*>::iterator it = objects.begin(); it != objects.end(); it++) {
|
---|
933 | delete *it;
|
---|
934 | }
|
---|
935 |
|
---|
936 | return 0;
|
---|
937 | }
|
---|
938 |
|
---|
939 | void glfw_error_callback(int error, const char* description) {
|
---|
940 | gl_log_err("GLFW ERROR: code %i msg: %s\n", error, description);
|
---|
941 | }
|
---|
942 |
|
---|
943 | void mouse_button_callback(GLFWwindow* window, int button, int action, int mods) {
|
---|
944 | double mouse_x, mouse_y;
|
---|
945 | glfwGetCursorPos(window, &mouse_x, &mouse_y);
|
---|
946 |
|
---|
947 | if (button == GLFW_MOUSE_BUTTON_LEFT && action == GLFW_PRESS) {
|
---|
948 | cout << "Mouse clicked (" << mouse_x << "," << mouse_y << ")" << endl;
|
---|
949 | selectedObject = NULL;
|
---|
950 |
|
---|
951 | float x = (2.0f*mouse_x) / width - 1.0f;
|
---|
952 | float y = 1.0f - (2.0f*mouse_y) / height;
|
---|
953 |
|
---|
954 | cout << "x: " << x << ", y: " << y << endl;
|
---|
955 |
|
---|
956 | vec4 ray_clip = vec4(x, y, -1.0f, 1.0f);
|
---|
957 | vec4 ray_eye = inverse(proj_mat) * ray_clip;
|
---|
958 | ray_eye = vec4(vec2(ray_eye), -1.0f, 1.0f);
|
---|
959 | vec4 ray_world = inverse(view_mat) * ray_eye;
|
---|
960 |
|
---|
961 | vec4 click_point;
|
---|
962 | vec3 closest_point = vec3(0.0f, 0.0f, -FAR_CLIP); // Any valid point will be closer than the far clipping plane, so initial value to that
|
---|
963 | SceneObject* closest_object = NULL;
|
---|
964 |
|
---|
965 | for (vector<SceneObject*>::iterator it = objects.begin(); it != objects.end(); it++) {
|
---|
966 | if ((*it)->type == TYPE_LASER) continue;
|
---|
967 | for (unsigned int p_idx = 0; p_idx < (*it)->points.size(); p_idx += 9) {
|
---|
968 | if (faceClicked(
|
---|
969 | {
|
---|
970 | vec3((*it)->points[p_idx], (*it)->points[p_idx + 1], (*it)->points[p_idx + 2]),
|
---|
971 | vec3((*it)->points[p_idx + 3], (*it)->points[p_idx + 4], (*it)->points[p_idx + 5]),
|
---|
972 | vec3((*it)->points[p_idx + 6], (*it)->points[p_idx + 7], (*it)->points[p_idx + 8]),
|
---|
973 | },
|
---|
974 | *it, ray_world, vec4(cam_pos, 1.0f), click_point
|
---|
975 | )) {
|
---|
976 | click_point = view_mat * click_point;
|
---|
977 |
|
---|
978 | if (-NEAR_CLIP >= click_point.z && click_point.z > -FAR_CLIP && click_point.z > closest_point.z) {
|
---|
979 | closest_point = vec3(click_point);
|
---|
980 | closest_object = *it;
|
---|
981 | }
|
---|
982 | }
|
---|
983 | }
|
---|
984 | }
|
---|
985 |
|
---|
986 | if (closest_object == NULL) {
|
---|
987 | cout << "No object was clicked" << endl;
|
---|
988 | } else {
|
---|
989 | clickedObject = closest_object;
|
---|
990 | cout << "Clicked object: " << clickedObject->id << endl;
|
---|
991 | }
|
---|
992 | }
|
---|
993 | }
|
---|
994 |
|
---|
995 | void key_callback(GLFWwindow* window, int key, int scancode, int action, int mods) {
|
---|
996 | key_state[key] = action;
|
---|
997 |
|
---|
998 | // should be true for GLFW_PRESS and GLFW_REPEAT
|
---|
999 | key_down[key] = (action != GLFW_RELEASE);
|
---|
1000 | }
|
---|
1001 |
|
---|
1002 | void APIENTRY debugGlCallback(
|
---|
1003 | GLenum source,
|
---|
1004 | GLenum type,
|
---|
1005 | GLuint id,
|
---|
1006 | GLenum severity,
|
---|
1007 | GLsizei length,
|
---|
1008 | const GLchar* message,
|
---|
1009 | const void* userParam
|
---|
1010 | ) {
|
---|
1011 | string strMessage(message);
|
---|
1012 |
|
---|
1013 | // TODO: Use C++ strings directly
|
---|
1014 | char source_str[2048];
|
---|
1015 | char type_str[2048];
|
---|
1016 | char severity_str[2048];
|
---|
1017 |
|
---|
1018 | switch (source) {
|
---|
1019 | case 0x8246:
|
---|
1020 | strcpy(source_str, "API");
|
---|
1021 | break;
|
---|
1022 | case 0x8247:
|
---|
1023 | strcpy(source_str, "WINDOW_SYSTEM");
|
---|
1024 | break;
|
---|
1025 | case 0x8248:
|
---|
1026 | strcpy(source_str, "SHADER_COMPILER");
|
---|
1027 | break;
|
---|
1028 | case 0x8249:
|
---|
1029 | strcpy(source_str, "THIRD_PARTY");
|
---|
1030 | break;
|
---|
1031 | case 0x824A:
|
---|
1032 | strcpy(source_str, "APPLICATION");
|
---|
1033 | break;
|
---|
1034 | case 0x824B:
|
---|
1035 | strcpy(source_str, "OTHER");
|
---|
1036 | break;
|
---|
1037 | default:
|
---|
1038 | strcpy(source_str, "undefined");
|
---|
1039 | break;
|
---|
1040 | }
|
---|
1041 |
|
---|
1042 | switch (type) {
|
---|
1043 | case 0x824C:
|
---|
1044 | strcpy(type_str, "ERROR");
|
---|
1045 | break;
|
---|
1046 | case 0x824D:
|
---|
1047 | strcpy(type_str, "DEPRECATED_BEHAVIOR");
|
---|
1048 | break;
|
---|
1049 | case 0x824E:
|
---|
1050 | strcpy(type_str, "UNDEFINED_BEHAVIOR");
|
---|
1051 | break;
|
---|
1052 | case 0x824F:
|
---|
1053 | strcpy(type_str, "PORTABILITY");
|
---|
1054 | break;
|
---|
1055 | case 0x8250:
|
---|
1056 | strcpy(type_str, "PERFORMANCE");
|
---|
1057 | break;
|
---|
1058 | case 0x8251:
|
---|
1059 | strcpy(type_str, "OTHER");
|
---|
1060 | break;
|
---|
1061 | case 0x8268:
|
---|
1062 | strcpy(type_str, "MARKER");
|
---|
1063 | break;
|
---|
1064 | case 0x8269:
|
---|
1065 | strcpy(type_str, "PUSH_GROUP");
|
---|
1066 | break;
|
---|
1067 | case 0x826A:
|
---|
1068 | strcpy(type_str, "POP_GROUP");
|
---|
1069 | break;
|
---|
1070 | default:
|
---|
1071 | strcpy(type_str, "undefined");
|
---|
1072 | break;
|
---|
1073 | }
|
---|
1074 | switch (severity) {
|
---|
1075 | case 0x9146:
|
---|
1076 | strcpy(severity_str, "HIGH");
|
---|
1077 | break;
|
---|
1078 | case 0x9147:
|
---|
1079 | strcpy(severity_str, "MEDIUM");
|
---|
1080 | break;
|
---|
1081 | case 0x9148:
|
---|
1082 | strcpy(severity_str, "LOW");
|
---|
1083 | break;
|
---|
1084 | case 0x826B:
|
---|
1085 | strcpy(severity_str, "NOTIFICATION");
|
---|
1086 | break;
|
---|
1087 | default:
|
---|
1088 | strcpy(severity_str, "undefined");
|
---|
1089 | break;
|
---|
1090 | }
|
---|
1091 |
|
---|
1092 | if (string(severity_str) != "NOTIFICATION") {
|
---|
1093 | cout << "OpenGL Error!!!" << endl;
|
---|
1094 | cout << "Source: " << string(source_str) << endl;
|
---|
1095 | cout << "Type: " << string(type_str) << endl;
|
---|
1096 | cout << "Severity: " << string(severity_str) << endl;
|
---|
1097 | cout << strMessage << endl;
|
---|
1098 | }
|
---|
1099 | }
|
---|
1100 |
|
---|
1101 |
|
---|
1102 | GLuint loadShader(GLenum type, string file) {
|
---|
1103 | cout << "Loading shader from file " << file << endl;
|
---|
1104 |
|
---|
1105 | ifstream shaderFile(file);
|
---|
1106 | GLuint shaderId = 0;
|
---|
1107 |
|
---|
1108 | if (shaderFile.is_open()) {
|
---|
1109 | string line, shaderString;
|
---|
1110 |
|
---|
1111 | while(getline(shaderFile, line)) {
|
---|
1112 | shaderString += line + "\n";
|
---|
1113 | }
|
---|
1114 | shaderFile.close();
|
---|
1115 | const char* shaderCString = shaderString.c_str();
|
---|
1116 |
|
---|
1117 | shaderId = glCreateShader(type);
|
---|
1118 | glShaderSource(shaderId, 1, &shaderCString, NULL);
|
---|
1119 | glCompileShader(shaderId);
|
---|
1120 |
|
---|
1121 | cout << "Loaded successfully" << endl;
|
---|
1122 | } else {
|
---|
1123 | cout << "Failed to load the file" << endl;
|
---|
1124 | }
|
---|
1125 |
|
---|
1126 | return shaderId;
|
---|
1127 | }
|
---|
1128 |
|
---|
1129 | GLuint loadShaderProgram(string vertexShaderPath, string fragmentShaderPath) {
|
---|
1130 | GLuint vs = loadShader(GL_VERTEX_SHADER, vertexShaderPath);
|
---|
1131 | GLuint fs = loadShader(GL_FRAGMENT_SHADER, fragmentShaderPath);
|
---|
1132 |
|
---|
1133 | GLuint shader_program = glCreateProgram();
|
---|
1134 | glAttachShader(shader_program, vs);
|
---|
1135 | glAttachShader(shader_program, fs);
|
---|
1136 |
|
---|
1137 | glLinkProgram(shader_program);
|
---|
1138 |
|
---|
1139 | return shader_program;
|
---|
1140 | }
|
---|
1141 |
|
---|
1142 | unsigned char* loadImage(string file_name, int* x, int* y) {
|
---|
1143 | int n;
|
---|
1144 | int force_channels = 4; // This forces RGBA (4 bytes per pixel)
|
---|
1145 | unsigned char* image_data = stbi_load(file_name.c_str(), x, y, &n, force_channels);
|
---|
1146 |
|
---|
1147 | int width_in_bytes = *x * 4;
|
---|
1148 | unsigned char *top = NULL;
|
---|
1149 | unsigned char *bottom = NULL;
|
---|
1150 | unsigned char temp = 0;
|
---|
1151 | int half_height = *y / 2;
|
---|
1152 |
|
---|
1153 | // flip image upside-down to account for OpenGL treating lower-left as (0, 0)
|
---|
1154 | for (int row = 0; row < half_height; row++) {
|
---|
1155 | top = image_data + row * width_in_bytes;
|
---|
1156 | bottom = image_data + (*y - row - 1) * width_in_bytes;
|
---|
1157 | for (int col = 0; col < width_in_bytes; col++) {
|
---|
1158 | temp = *top;
|
---|
1159 | *top = *bottom;
|
---|
1160 | *bottom = temp;
|
---|
1161 | top++;
|
---|
1162 | bottom++;
|
---|
1163 | }
|
---|
1164 | }
|
---|
1165 |
|
---|
1166 | if (!image_data) {
|
---|
1167 | fprintf(stderr, "ERROR: could not load %s\n", file_name.c_str());
|
---|
1168 | }
|
---|
1169 |
|
---|
1170 | // Not Power-of-2 check
|
---|
1171 | if ((*x & (*x - 1)) != 0 || (*y & (*y - 1)) != 0) {
|
---|
1172 | fprintf(stderr, "WARNING: texture %s is not power-of-2 dimensions\n", file_name.c_str());
|
---|
1173 | }
|
---|
1174 |
|
---|
1175 | return image_data;
|
---|
1176 | }
|
---|
1177 |
|
---|
1178 | bool faceClicked(array<vec3, 3> points, SceneObject* obj, vec4 world_ray, vec4 cam, vec4& click_point) {
|
---|
1179 | // LINE EQUATION: P = O + Dt
|
---|
1180 | // O = cam
|
---|
1181 | // D = ray_world
|
---|
1182 |
|
---|
1183 | // PLANE EQUATION: P dot n + d = 0
|
---|
1184 | // n is the normal vector
|
---|
1185 | // d is the offset from the origin
|
---|
1186 |
|
---|
1187 | // Take the cross-product of two vectors on the plane to get the normal
|
---|
1188 | vec3 v1 = points[1] - points[0];
|
---|
1189 | vec3 v2 = points[2] - points[0];
|
---|
1190 |
|
---|
1191 | vec3 normal = vec3(v1.y*v2.z - v1.z*v2.y, v1.z*v2.x - v1.x*v2.z, v1.x*v2.y - v1.y*v2.x);
|
---|
1192 |
|
---|
1193 | vec3 local_ray = vec3(inverse(obj->model_mat) * world_ray);
|
---|
1194 | vec3 local_cam = vec3(inverse(obj->model_mat) * cam);
|
---|
1195 |
|
---|
1196 | local_ray = local_ray - local_cam;
|
---|
1197 |
|
---|
1198 | float d = -glm::dot(points[0], normal);
|
---|
1199 | float t = -(glm::dot(local_cam, normal) + d) / glm::dot(local_ray, normal);
|
---|
1200 |
|
---|
1201 | vec3 intersection = local_cam + t*local_ray;
|
---|
1202 |
|
---|
1203 | if (insideTriangle(intersection, points)) {
|
---|
1204 | click_point = obj->model_mat * vec4(intersection, 1.0f);
|
---|
1205 | return true;
|
---|
1206 | } else {
|
---|
1207 | return false;
|
---|
1208 | }
|
---|
1209 | }
|
---|
1210 |
|
---|
1211 | bool insideTriangle(vec3 p, array<vec3, 3> triangle_points) {
|
---|
1212 | vec3 v21 = triangle_points[1] - triangle_points[0];
|
---|
1213 | vec3 v31 = triangle_points[2] - triangle_points[0];
|
---|
1214 | vec3 pv1 = p - triangle_points[0];
|
---|
1215 |
|
---|
1216 | float y = (pv1.y*v21.x - pv1.x*v21.y) / (v31.y*v21.x - v31.x*v21.y);
|
---|
1217 | float x = (pv1.x-y*v31.x) / v21.x;
|
---|
1218 |
|
---|
1219 | return x > 0.0f && y > 0.0f && x+y < 1.0f;
|
---|
1220 | }
|
---|
1221 |
|
---|
1222 | void printVector(string label, vec3& v) {
|
---|
1223 | cout << label << " -> (" << v.x << "," << v.y << "," << v.z << ")" << endl;
|
---|
1224 | }
|
---|
1225 |
|
---|
1226 | void print4DVector(string label, vec4& v) {
|
---|
1227 | cout << label << " -> (" << v.x << "," << v.y << "," << v.z << "," << v.w << ")" << endl;
|
---|
1228 | }
|
---|
1229 |
|
---|
1230 | void initObject(SceneObject* obj) {
|
---|
1231 | // Each objects must have at least 3 points, so the size of
|
---|
1232 | // the points array must be a positive multiple of 9
|
---|
1233 | if (obj->points.size() == 0 || (obj->points.size() % 9) != 0) {
|
---|
1234 | // TODO: Maybe throw some kind of error here instead
|
---|
1235 | return;
|
---|
1236 | }
|
---|
1237 |
|
---|
1238 | obj->id = objects.size(); // currently unused
|
---|
1239 | obj->num_points = obj->points.size() / 3;
|
---|
1240 | obj->model_transform = mat4(1.0f);
|
---|
1241 | obj->deleted = false;
|
---|
1242 |
|
---|
1243 | obj->normals.reserve(obj->points.size());
|
---|
1244 | for (unsigned int i = 0; i < obj->points.size(); i += 9) {
|
---|
1245 | vec3 point1 = vec3(obj->points[i], obj->points[i + 1], obj->points[i + 2]);
|
---|
1246 | vec3 point2 = vec3(obj->points[i + 3], obj->points[i + 4], obj->points[i + 5]);
|
---|
1247 | vec3 point3 = vec3(obj->points[i + 6], obj->points[i + 7], obj->points[i + 8]);
|
---|
1248 |
|
---|
1249 | vec3 normal = normalize(cross(point2 - point1, point3 - point1));
|
---|
1250 |
|
---|
1251 | // Add the same normal for all 3 points
|
---|
1252 | for (int j = 0; j < 3; j++) {
|
---|
1253 | obj->normals.push_back(normal.x);
|
---|
1254 | obj->normals.push_back(normal.y);
|
---|
1255 | obj->normals.push_back(normal.z);
|
---|
1256 | }
|
---|
1257 | }
|
---|
1258 |
|
---|
1259 | if (obj->type != TYPE_LASER) {
|
---|
1260 | calculateObjectBoundingBox(obj);
|
---|
1261 |
|
---|
1262 | obj->bounding_center = vec3(obj->translate_mat * vec4(obj->bounding_center, 1.0f));
|
---|
1263 | }
|
---|
1264 | }
|
---|
1265 |
|
---|
1266 | void addObjectToScene(SceneObject* obj,
|
---|
1267 | map<GLuint, BufferInfo>& shaderBufferInfo,
|
---|
1268 | GLuint points_vbo,
|
---|
1269 | GLuint colors_vbo,
|
---|
1270 | GLuint selected_colors_vbo,
|
---|
1271 | GLuint texcoords_vbo,
|
---|
1272 | GLuint normals_vbo,
|
---|
1273 | GLuint ubo,
|
---|
1274 | GLuint model_mat_idx_vbo,
|
---|
1275 | GLuint asteroid_sp) {
|
---|
1276 | objects.push_back(obj);
|
---|
1277 |
|
---|
1278 | BufferInfo* bufferInfo = &shaderBufferInfo[obj->shader_program];
|
---|
1279 |
|
---|
1280 | // Check if the buffers aren't large enough to fit the new object and, if so, call
|
---|
1281 | // populateBuffers() to resize and repopupulate them
|
---|
1282 | if (bufferInfo->vbo_capacity < (bufferInfo->ubo_offset + obj->num_points) ||
|
---|
1283 | bufferInfo->ubo_capacity < (bufferInfo->ubo_offset + 1)) {
|
---|
1284 |
|
---|
1285 | if (leftLaser != NULL && leftLaser->deleted) {
|
---|
1286 | leftLaser = NULL;
|
---|
1287 | }
|
---|
1288 | if (rightLaser != NULL && rightLaser->deleted) {
|
---|
1289 | rightLaser = NULL;
|
---|
1290 | }
|
---|
1291 |
|
---|
1292 | populateBuffers(objects, shaderBufferInfo,
|
---|
1293 | points_vbo,
|
---|
1294 | colors_vbo,
|
---|
1295 | selected_colors_vbo,
|
---|
1296 | texcoords_vbo,
|
---|
1297 | normals_vbo,
|
---|
1298 | ubo,
|
---|
1299 | model_mat_idx_vbo,
|
---|
1300 | asteroid_sp);
|
---|
1301 | } else {
|
---|
1302 | copyObjectDataToBuffers(*objects.back(), shaderBufferInfo,
|
---|
1303 | points_vbo,
|
---|
1304 | colors_vbo,
|
---|
1305 | selected_colors_vbo,
|
---|
1306 | texcoords_vbo,
|
---|
1307 | normals_vbo,
|
---|
1308 | ubo,
|
---|
1309 | model_mat_idx_vbo,
|
---|
1310 | asteroid_sp);
|
---|
1311 | }
|
---|
1312 | }
|
---|
1313 |
|
---|
1314 | void removeObjectFromScene(SceneObject& obj, GLuint ubo) {
|
---|
1315 | if (!obj.deleted) {
|
---|
1316 | // Move the object outside the render bounds of the scene so it doesn't get rendered
|
---|
1317 | // TODO: Find a better way of hiding the object until the next time buffers are repopulated
|
---|
1318 | transformObject(obj, translate(mat4(1.0f), vec3(0.0f, 0.0f, FAR_CLIP * 1000.0f)), ubo);
|
---|
1319 | obj.deleted = true;
|
---|
1320 | }
|
---|
1321 | }
|
---|
1322 |
|
---|
1323 | void calculateObjectBoundingBox(SceneObject* obj) {
|
---|
1324 | GLfloat min_x = obj->points[0];
|
---|
1325 | GLfloat max_x = obj->points[0];
|
---|
1326 | GLfloat min_y = obj->points[1];
|
---|
1327 | GLfloat max_y = obj->points[1];
|
---|
1328 | GLfloat min_z = obj->points[2];
|
---|
1329 | GLfloat max_z = obj->points[2];
|
---|
1330 |
|
---|
1331 | // start from the second point
|
---|
1332 | for (unsigned int i = 3; i < obj->points.size(); i += 3) {
|
---|
1333 | if (min_x > obj->points[i]) {
|
---|
1334 | min_x = obj->points[i];
|
---|
1335 | }
|
---|
1336 | else if (max_x < obj->points[i]) {
|
---|
1337 | max_x = obj->points[i];
|
---|
1338 | }
|
---|
1339 |
|
---|
1340 | if (min_y > obj->points[i + 1]) {
|
---|
1341 | min_y = obj->points[i + 1];
|
---|
1342 | }
|
---|
1343 | else if (max_y < obj->points[i + 1]) {
|
---|
1344 | max_y = obj->points[i + 1];
|
---|
1345 | }
|
---|
1346 |
|
---|
1347 | if (min_z > obj->points[i + 2]) {
|
---|
1348 | min_z = obj->points[i + 2];
|
---|
1349 | }
|
---|
1350 | else if (max_z < obj->points[i + 2]) {
|
---|
1351 | max_z = obj->points[i + 2];
|
---|
1352 | }
|
---|
1353 | }
|
---|
1354 |
|
---|
1355 | obj->bounding_center = vec3((min_x + max_x) / 2.0f, (min_y + max_y) / 2.0f, (min_z + max_z) / 2.0f);
|
---|
1356 |
|
---|
1357 | GLfloat radius_x = max_x - obj->bounding_center.x;
|
---|
1358 | GLfloat radius_y = max_y - obj->bounding_center.y;
|
---|
1359 | GLfloat radius_z = max_z - obj->bounding_center.z;
|
---|
1360 |
|
---|
1361 | // TODO: This actually underestimates the radius. Might need to be fixed at some point.
|
---|
1362 | // TODO: Does not take into account any scaling in the model matrix
|
---|
1363 | obj->bounding_radius = radius_x;
|
---|
1364 | if (obj->bounding_radius < radius_y)
|
---|
1365 | obj->bounding_radius = radius_y;
|
---|
1366 | if (obj->bounding_radius < radius_z)
|
---|
1367 | obj->bounding_radius = radius_z;
|
---|
1368 |
|
---|
1369 | for (unsigned int i = 0; i < obj->points.size(); i += 3) {
|
---|
1370 | obj->points[i] -= obj->bounding_center.x;
|
---|
1371 | obj->points[i + 1] -= obj->bounding_center.y;
|
---|
1372 | obj->points[i + 2] -= obj->bounding_center.z;
|
---|
1373 | }
|
---|
1374 |
|
---|
1375 | obj->bounding_center = vec3(0.0f, 0.0f, 0.0f);
|
---|
1376 | }
|
---|
1377 |
|
---|
1378 | SceneObject* createShip(GLuint shader) {
|
---|
1379 | SceneObject* ship = new SceneObject();
|
---|
1380 |
|
---|
1381 | ship->type = TYPE_SHIP;
|
---|
1382 | ship->shader_program = shader;
|
---|
1383 |
|
---|
1384 | ship->points = {
|
---|
1385 | //back
|
---|
1386 | -0.5f, 0.3f, 0.0f,
|
---|
1387 | -0.5f, 0.0f, 0.0f,
|
---|
1388 | 0.5f, 0.0f, 0.0f,
|
---|
1389 | -0.5f, 0.3f, 0.0f,
|
---|
1390 | 0.5f, 0.0f, 0.0f,
|
---|
1391 | 0.5f, 0.3f, 0.0f,
|
---|
1392 |
|
---|
1393 | // left back
|
---|
1394 | -0.5f, 0.3f, -2.0f,
|
---|
1395 | -0.5f, 0.0f, -2.0f,
|
---|
1396 | -0.5f, 0.0f, 0.0f,
|
---|
1397 | -0.5f, 0.3f, -2.0f,
|
---|
1398 | -0.5f, 0.0f, 0.0f,
|
---|
1399 | -0.5f, 0.3f, 0.0f,
|
---|
1400 |
|
---|
1401 | // right back
|
---|
1402 | 0.5f, 0.3f, 0.0f,
|
---|
1403 | 0.5f, 0.0f, 0.0f,
|
---|
1404 | 0.5f, 0.0f, -2.0f,
|
---|
1405 | 0.5f, 0.3f, 0.0f,
|
---|
1406 | 0.5f, 0.0f, -2.0f,
|
---|
1407 | 0.5f, 0.3f, -2.0f,
|
---|
1408 |
|
---|
1409 | // left mid
|
---|
1410 | -0.25f, 0.3f, -3.0f,
|
---|
1411 | -0.25f, 0.0f, -3.0f,
|
---|
1412 | -0.5f, 0.0f, -2.0f,
|
---|
1413 | -0.25f, 0.3f, -3.0f,
|
---|
1414 | -0.5f, 0.0f, -2.0f,
|
---|
1415 | -0.5f, 0.3f, -2.0f,
|
---|
1416 |
|
---|
1417 | // right mid
|
---|
1418 | 0.5f, 0.3f, -2.0f,
|
---|
1419 | 0.5f, 0.0f, -2.0f,
|
---|
1420 | 0.25f, 0.0f, -3.0f,
|
---|
1421 | 0.5f, 0.3f, -2.0f,
|
---|
1422 | 0.25f, 0.0f, -3.0f,
|
---|
1423 | 0.25f, 0.3f, -3.0f,
|
---|
1424 |
|
---|
1425 | // left front
|
---|
1426 | 0.0f, 0.0f, -3.5f,
|
---|
1427 | -0.25f, 0.0f, -3.0f,
|
---|
1428 | -0.25f, 0.3f, -3.0f,
|
---|
1429 |
|
---|
1430 | // right front
|
---|
1431 | 0.25f, 0.3f, -3.0f,
|
---|
1432 | 0.25f, 0.0f, -3.0f,
|
---|
1433 | 0.0f, 0.0f, -3.5f,
|
---|
1434 |
|
---|
1435 | // top back
|
---|
1436 | -0.5f, 0.3f, -2.0f,
|
---|
1437 | -0.5f, 0.3f, 0.0f,
|
---|
1438 | 0.5f, 0.3f, 0.0f,
|
---|
1439 | -0.5f, 0.3f, -2.0f,
|
---|
1440 | 0.5f, 0.3f, 0.0f,
|
---|
1441 | 0.5f, 0.3f, -2.0f,
|
---|
1442 |
|
---|
1443 | // bottom back
|
---|
1444 | -0.5f, 0.0f, 0.0f,
|
---|
1445 | -0.5f, 0.0f, -2.0f,
|
---|
1446 | 0.5f, 0.0f, 0.0f,
|
---|
1447 | 0.5f, 0.0f, 0.0f,
|
---|
1448 | -0.5f, 0.0f, -2.0f,
|
---|
1449 | 0.5f, 0.0f, -2.0f,
|
---|
1450 |
|
---|
1451 | // top mid
|
---|
1452 | -0.25f, 0.3f, -3.0f,
|
---|
1453 | -0.5f, 0.3f, -2.0f,
|
---|
1454 | 0.5f, 0.3f, -2.0f,
|
---|
1455 | -0.25f, 0.3f, -3.0f,
|
---|
1456 | 0.5f, 0.3f, -2.0f,
|
---|
1457 | 0.25f, 0.3f, -3.0f,
|
---|
1458 |
|
---|
1459 | // bottom mid
|
---|
1460 | -0.5f, 0.0f, -2.0f,
|
---|
1461 | -0.25f, 0.0f, -3.0f,
|
---|
1462 | 0.5f, 0.0f, -2.0f,
|
---|
1463 | 0.5f, 0.0f, -2.0f,
|
---|
1464 | -0.25f, 0.0f, -3.0f,
|
---|
1465 | 0.25f, 0.0f, -3.0f,
|
---|
1466 |
|
---|
1467 | // top front
|
---|
1468 | -0.25f, 0.3f, -3.0f,
|
---|
1469 | 0.25f, 0.3f, -3.0f,
|
---|
1470 | 0.0f, 0.0f, -3.5f,
|
---|
1471 |
|
---|
1472 | // bottom front
|
---|
1473 | 0.25f, 0.0f, -3.0f,
|
---|
1474 | -0.25f, 0.0f, -3.0f,
|
---|
1475 | 0.0f, 0.0f, -3.5f,
|
---|
1476 |
|
---|
1477 | // left wing start back
|
---|
1478 | -1.5f, 0.3f, 0.0f,
|
---|
1479 | -1.5f, 0.0f, 0.0f,
|
---|
1480 | -0.5f, 0.0f, 0.0f,
|
---|
1481 | -1.5f, 0.3f, 0.0f,
|
---|
1482 | -0.5f, 0.0f, 0.0f,
|
---|
1483 | -0.5f, 0.3f, 0.0f,
|
---|
1484 |
|
---|
1485 | // left wing start top
|
---|
1486 | -0.5f, 0.3f, -0.3f,
|
---|
1487 | -1.3f, 0.3f, -0.3f,
|
---|
1488 | -1.5f, 0.3f, 0.0f,
|
---|
1489 | -0.5f, 0.3f, -0.3f,
|
---|
1490 | -1.5f, 0.3f, 0.0f,
|
---|
1491 | -0.5f, 0.3f, 0.0f,
|
---|
1492 |
|
---|
1493 | // left wing start front
|
---|
1494 | -0.5f, 0.3f, -0.3f,
|
---|
1495 | -0.5f, 0.0f, -0.3f,
|
---|
1496 | -1.3f, 0.0f, -0.3f,
|
---|
1497 | -0.5f, 0.3f, -0.3f,
|
---|
1498 | -1.3f, 0.0f, -0.3f,
|
---|
1499 | -1.3f, 0.3f, -0.3f,
|
---|
1500 |
|
---|
1501 | // left wing start bottom
|
---|
1502 | -0.5f, 0.0f, 0.0f,
|
---|
1503 | -1.5f, 0.0f, 0.0f,
|
---|
1504 | -1.3f, 0.0f, -0.3f,
|
---|
1505 | -0.5f, 0.0f, 0.0f,
|
---|
1506 | -1.3f, 0.0f, -0.3f,
|
---|
1507 | -0.5f, 0.0f, -0.3f,
|
---|
1508 |
|
---|
1509 | // left wing end outside
|
---|
1510 | -1.5f, 0.3f, 0.0f,
|
---|
1511 | -2.2f, 0.15f, -0.8f,
|
---|
1512 | -1.5f, 0.0f, 0.0f,
|
---|
1513 |
|
---|
1514 | // left wing end top
|
---|
1515 | -1.3f, 0.3f, -0.3f,
|
---|
1516 | -2.2f, 0.15f, -0.8f,
|
---|
1517 | -1.5f, 0.3f, 0.0f,
|
---|
1518 |
|
---|
1519 | // left wing end front
|
---|
1520 | -1.3f, 0.0f, -0.3f,
|
---|
1521 | -2.2f, 0.15f, -0.8f,
|
---|
1522 | -1.3f, 0.3f, -0.3f,
|
---|
1523 |
|
---|
1524 | // left wing end bottom
|
---|
1525 | -1.5f, 0.0f, 0.0f,
|
---|
1526 | -2.2f, 0.15f, -0.8f,
|
---|
1527 | -1.3f, 0.0f, -0.3f,
|
---|
1528 |
|
---|
1529 | // right wing start back
|
---|
1530 | 1.5f, 0.0f, 0.0f,
|
---|
1531 | 1.5f, 0.3f, 0.0f,
|
---|
1532 | 0.5f, 0.0f, 0.0f,
|
---|
1533 | 0.5f, 0.0f, 0.0f,
|
---|
1534 | 1.5f, 0.3f, 0.0f,
|
---|
1535 | 0.5f, 0.3f, 0.0f,
|
---|
1536 |
|
---|
1537 | // right wing start top
|
---|
1538 | 1.3f, 0.3f, -0.3f,
|
---|
1539 | 0.5f, 0.3f, -0.3f,
|
---|
1540 | 1.5f, 0.3f, 0.0f,
|
---|
1541 | 1.5f, 0.3f, 0.0f,
|
---|
1542 | 0.5f, 0.3f, -0.3f,
|
---|
1543 | 0.5f, 0.3f, 0.0f,
|
---|
1544 |
|
---|
1545 | // right wing start front
|
---|
1546 | 0.5f, 0.0f, -0.3f,
|
---|
1547 | 0.5f, 0.3f, -0.3f,
|
---|
1548 | 1.3f, 0.0f, -0.3f,
|
---|
1549 | 1.3f, 0.0f, -0.3f,
|
---|
1550 | 0.5f, 0.3f, -0.3f,
|
---|
1551 | 1.3f, 0.3f, -0.3f,
|
---|
1552 |
|
---|
1553 | // right wing start bottom
|
---|
1554 | 1.5f, 0.0f, 0.0f,
|
---|
1555 | 0.5f, 0.0f, 0.0f,
|
---|
1556 | 1.3f, 0.0f, -0.3f,
|
---|
1557 | 1.3f, 0.0f, -0.3f,
|
---|
1558 | 0.5f, 0.0f, 0.0f,
|
---|
1559 | 0.5f, 0.0f, -0.3f,
|
---|
1560 |
|
---|
1561 | // right wing end outside
|
---|
1562 | 2.2f, 0.15f, -0.8f,
|
---|
1563 | 1.5f, 0.3f, 0.0f,
|
---|
1564 | 1.5f, 0.0f, 0.0f,
|
---|
1565 |
|
---|
1566 | // right wing end top
|
---|
1567 | 2.2f, 0.15f, -0.8f,
|
---|
1568 | 1.3f, 0.3f, -0.3f,
|
---|
1569 | 1.5f, 0.3f, 0.0f,
|
---|
1570 |
|
---|
1571 | // right wing end front
|
---|
1572 | 2.2f, 0.15f, -0.8f,
|
---|
1573 | 1.3f, 0.0f, -0.3f,
|
---|
1574 | 1.3f, 0.3f, -0.3f,
|
---|
1575 |
|
---|
1576 | // right wing end bottom
|
---|
1577 | 2.2f, 0.15f, -0.8f,
|
---|
1578 | 1.5f, 0.0f, 0.0f,
|
---|
1579 | 1.3f, 0.0f, -0.3f,
|
---|
1580 | };
|
---|
1581 | ship->colors = {
|
---|
1582 | 0.0f, 0.0f, 0.3f,
|
---|
1583 | 0.0f, 0.0f, 0.3f,
|
---|
1584 | 0.0f, 0.0f, 0.3f,
|
---|
1585 | 0.0f, 0.0f, 0.3f,
|
---|
1586 | 0.0f, 0.0f, 0.3f,
|
---|
1587 | 0.0f, 0.0f, 0.3f,
|
---|
1588 |
|
---|
1589 | 0.0f, 0.0f, 0.3f,
|
---|
1590 | 0.0f, 0.0f, 0.3f,
|
---|
1591 | 0.0f, 0.0f, 0.3f,
|
---|
1592 | 0.0f, 0.0f, 0.3f,
|
---|
1593 | 0.0f, 0.0f, 0.3f,
|
---|
1594 | 0.0f, 0.0f, 0.3f,
|
---|
1595 |
|
---|
1596 | 0.0f, 0.0f, 0.3f,
|
---|
1597 | 0.0f, 0.0f, 0.3f,
|
---|
1598 | 0.0f, 0.0f, 0.3f,
|
---|
1599 | 0.0f, 0.0f, 0.3f,
|
---|
1600 | 0.0f, 0.0f, 0.3f,
|
---|
1601 | 0.0f, 0.0f, 0.3f,
|
---|
1602 |
|
---|
1603 | 0.0f, 0.0f, 0.3f,
|
---|
1604 | 0.0f, 0.0f, 0.3f,
|
---|
1605 | 0.0f, 0.0f, 0.3f,
|
---|
1606 | 0.0f, 0.0f, 0.3f,
|
---|
1607 | 0.0f, 0.0f, 0.3f,
|
---|
1608 | 0.0f, 0.0f, 0.3f,
|
---|
1609 |
|
---|
1610 | 0.0f, 0.0f, 0.3f,
|
---|
1611 | 0.0f, 0.0f, 0.3f,
|
---|
1612 | 0.0f, 0.0f, 0.3f,
|
---|
1613 | 0.0f, 0.0f, 0.3f,
|
---|
1614 | 0.0f, 0.0f, 0.3f,
|
---|
1615 | 0.0f, 0.0f, 0.3f,
|
---|
1616 |
|
---|
1617 | 0.0f, 0.0f, 1.0f,
|
---|
1618 | 0.0f, 0.0f, 1.0f,
|
---|
1619 | 0.0f, 0.0f, 1.0f,
|
---|
1620 |
|
---|
1621 | 0.0f, 0.0f, 1.0f,
|
---|
1622 | 0.0f, 0.0f, 1.0f,
|
---|
1623 | 0.0f, 0.0f, 1.0f,
|
---|
1624 |
|
---|
1625 | 0.0f, 0.0f, 1.0f,
|
---|
1626 | 0.0f, 0.0f, 1.0f,
|
---|
1627 | 0.0f, 0.0f, 1.0f,
|
---|
1628 | 0.0f, 0.0f, 1.0f,
|
---|
1629 | 0.0f, 0.0f, 1.0f,
|
---|
1630 | 0.0f, 0.0f, 1.0f,
|
---|
1631 |
|
---|
1632 | 0.0f, 0.0f, 1.0f,
|
---|
1633 | 0.0f, 0.0f, 1.0f,
|
---|
1634 | 0.0f, 0.0f, 1.0f,
|
---|
1635 | 0.0f, 0.0f, 1.0f,
|
---|
1636 | 0.0f, 0.0f, 1.0f,
|
---|
1637 | 0.0f, 0.0f, 1.0f,
|
---|
1638 |
|
---|
1639 | 0.0f, 0.0f, 1.0f,
|
---|
1640 | 0.0f, 0.0f, 1.0f,
|
---|
1641 | 0.0f, 0.0f, 1.0f,
|
---|
1642 | 0.0f, 0.0f, 1.0f,
|
---|
1643 | 0.0f, 0.0f, 1.0f,
|
---|
1644 | 0.0f, 0.0f, 1.0f,
|
---|
1645 |
|
---|
1646 | 0.0f, 0.0f, 1.0f,
|
---|
1647 | 0.0f, 0.0f, 1.0f,
|
---|
1648 | 0.0f, 0.0f, 1.0f,
|
---|
1649 | 0.0f, 0.0f, 1.0f,
|
---|
1650 | 0.0f, 0.0f, 1.0f,
|
---|
1651 | 0.0f, 0.0f, 1.0f,
|
---|
1652 |
|
---|
1653 | 0.0f, 0.0f, 0.3f,
|
---|
1654 | 0.0f, 0.0f, 0.3f,
|
---|
1655 | 0.0f, 0.0f, 0.3f,
|
---|
1656 |
|
---|
1657 | 0.0f, 0.0f, 0.3f,
|
---|
1658 | 0.0f, 0.0f, 0.3f,
|
---|
1659 | 0.0f, 0.0f, 0.3f,
|
---|
1660 |
|
---|
1661 | 0.0f, 0.0f, 0.3f,
|
---|
1662 | 0.0f, 0.0f, 0.3f,
|
---|
1663 | 0.0f, 0.0f, 0.3f,
|
---|
1664 | 0.0f, 0.0f, 0.3f,
|
---|
1665 | 0.0f, 0.0f, 0.3f,
|
---|
1666 | 0.0f, 0.0f, 0.3f,
|
---|
1667 |
|
---|
1668 | 0.0f, 0.0f, 0.3f,
|
---|
1669 | 0.0f, 0.0f, 0.3f,
|
---|
1670 | 0.0f, 0.0f, 0.3f,
|
---|
1671 | 0.0f, 0.0f, 0.3f,
|
---|
1672 | 0.0f, 0.0f, 0.3f,
|
---|
1673 | 0.0f, 0.0f, 0.3f,
|
---|
1674 |
|
---|
1675 | 0.0f, 0.0f, 0.3f,
|
---|
1676 | 0.0f, 0.0f, 0.3f,
|
---|
1677 | 0.0f, 0.0f, 0.3f,
|
---|
1678 | 0.0f, 0.0f, 0.3f,
|
---|
1679 | 0.0f, 0.0f, 0.3f,
|
---|
1680 | 0.0f, 0.0f, 0.3f,
|
---|
1681 |
|
---|
1682 | 0.0f, 0.0f, 0.3f,
|
---|
1683 | 0.0f, 0.0f, 0.3f,
|
---|
1684 | 0.0f, 0.0f, 0.3f,
|
---|
1685 | 0.0f, 0.0f, 0.3f,
|
---|
1686 | 0.0f, 0.0f, 0.3f,
|
---|
1687 | 0.0f, 0.0f, 0.3f,
|
---|
1688 |
|
---|
1689 | 0.0f, 0.0f, 0.3f,
|
---|
1690 | 0.0f, 0.0f, 0.3f,
|
---|
1691 | 0.0f, 0.0f, 0.3f,
|
---|
1692 |
|
---|
1693 | 0.0f, 0.0f, 0.3f,
|
---|
1694 | 0.0f, 0.0f, 0.3f,
|
---|
1695 | 0.0f, 0.0f, 0.3f,
|
---|
1696 |
|
---|
1697 | 0.0f, 0.0f, 0.3f,
|
---|
1698 | 0.0f, 0.0f, 0.3f,
|
---|
1699 | 0.0f, 0.0f, 0.3f,
|
---|
1700 |
|
---|
1701 | 0.0f, 0.0f, 0.3f,
|
---|
1702 | 0.0f, 0.0f, 0.3f,
|
---|
1703 | 0.0f, 0.0f, 0.3f,
|
---|
1704 |
|
---|
1705 | 0.0f, 0.0f, 0.3f,
|
---|
1706 | 0.0f, 0.0f, 0.3f,
|
---|
1707 | 0.0f, 0.0f, 0.3f,
|
---|
1708 | 0.0f, 0.0f, 0.3f,
|
---|
1709 | 0.0f, 0.0f, 0.3f,
|
---|
1710 | 0.0f, 0.0f, 0.3f,
|
---|
1711 |
|
---|
1712 | 0.0f, 0.0f, 0.3f,
|
---|
1713 | 0.0f, 0.0f, 0.3f,
|
---|
1714 | 0.0f, 0.0f, 0.3f,
|
---|
1715 | 0.0f, 0.0f, 0.3f,
|
---|
1716 | 0.0f, 0.0f, 0.3f,
|
---|
1717 | 0.0f, 0.0f, 0.3f,
|
---|
1718 |
|
---|
1719 | 0.0f, 0.0f, 0.3f,
|
---|
1720 | 0.0f, 0.0f, 0.3f,
|
---|
1721 | 0.0f, 0.0f, 0.3f,
|
---|
1722 | 0.0f, 0.0f, 0.3f,
|
---|
1723 | 0.0f, 0.0f, 0.3f,
|
---|
1724 | 0.0f, 0.0f, 0.3f,
|
---|
1725 |
|
---|
1726 | 0.0f, 0.0f, 0.3f,
|
---|
1727 | 0.0f, 0.0f, 0.3f,
|
---|
1728 | 0.0f, 0.0f, 0.3f,
|
---|
1729 | 0.0f, 0.0f, 0.3f,
|
---|
1730 | 0.0f, 0.0f, 0.3f,
|
---|
1731 | 0.0f, 0.0f, 0.3f,
|
---|
1732 |
|
---|
1733 | 0.0f, 0.0f, 0.3f,
|
---|
1734 | 0.0f, 0.0f, 0.3f,
|
---|
1735 | 0.0f, 0.0f, 0.3f,
|
---|
1736 |
|
---|
1737 | 0.0f, 0.0f, 0.3f,
|
---|
1738 | 0.0f, 0.0f, 0.3f,
|
---|
1739 | 0.0f, 0.0f, 0.3f,
|
---|
1740 |
|
---|
1741 | 0.0f, 0.0f, 0.3f,
|
---|
1742 | 0.0f, 0.0f, 0.3f,
|
---|
1743 | 0.0f, 0.0f, 0.3f,
|
---|
1744 |
|
---|
1745 | 0.0f, 0.0f, 0.3f,
|
---|
1746 | 0.0f, 0.0f, 0.3f,
|
---|
1747 | 0.0f, 0.0f, 0.3f,
|
---|
1748 | };
|
---|
1749 | ship->texcoords = { 0.0f };
|
---|
1750 | ship->selected_colors = { 0.0f };
|
---|
1751 |
|
---|
1752 | mat4 T_model = translate(mat4(1.0f), vec3(0.0f, -1.2f, 1.65f));
|
---|
1753 | mat4 R_model(1.0f);
|
---|
1754 | ship->model_base = T_model * R_model * scale(mat4(1.0f), vec3(0.1f, 0.1f, 0.1f));
|
---|
1755 |
|
---|
1756 | ship->translate_mat = T_model;
|
---|
1757 |
|
---|
1758 | initObject(ship);
|
---|
1759 |
|
---|
1760 | return ship;
|
---|
1761 | }
|
---|
1762 |
|
---|
1763 | /* LASER RENDERING/POSITIONING ALGORITHM
|
---|
1764 | * -Draw a thin rectangle for the laser beam, using the specified width and endpoints
|
---|
1765 | * -Texture the beam with a grayscale partially transparent image
|
---|
1766 | * -In the shader, blend the image with a color to support lasers of different colors
|
---|
1767 | *
|
---|
1768 | * The flat part of the textured rectangle needs to always face the camera, so the laser's width is constant
|
---|
1769 | * This is done as follows:
|
---|
1770 | * -Determine the length of the laser based on the start and end points
|
---|
1771 | * -Draw a rectangle along the z-axis and rotated upwards along the y-axis, with the correct final length and width
|
---|
1772 | * -Rotate the beam around the z-axis by the correct angle, sot that in its final position, the flat part faces the camera
|
---|
1773 | * -Rotate the beam along the x-axis and then along the y-axis and then translate it to put it into its final position
|
---|
1774 | */
|
---|
1775 | // TODO: Make the color parameter have an effect
|
---|
1776 | // TODO: Come up with a better way of passing the object back than copying it
|
---|
1777 | Laser* createLaser(vec3 start, vec3 end, vec3 color, GLfloat width, GLuint laser_sp) {
|
---|
1778 | Laser* obj = new Laser();
|
---|
1779 | obj->type = TYPE_LASER;
|
---|
1780 | obj->targetAsteroid = NULL;
|
---|
1781 | obj->shader_program = laser_sp;
|
---|
1782 |
|
---|
1783 | vec3 ray = end - start;
|
---|
1784 | float length = glm::length(ray);
|
---|
1785 |
|
---|
1786 | obj->points = {
|
---|
1787 | width / 2, 0.0f, -width / 2,
|
---|
1788 | -width / 2, 0.0f, -width / 2,
|
---|
1789 | -width / 2, 0.0f, 0.0f,
|
---|
1790 | width / 2, 0.0f, -width / 2,
|
---|
1791 | -width / 2, 0.0f, 0.0f,
|
---|
1792 | width / 2, 0.0f, 0.0f,
|
---|
1793 | width / 2, 0.0f, -length + width / 2,
|
---|
1794 | -width / 2, 0.0f, -length + width / 2,
|
---|
1795 | -width / 2, 0.0f, -width / 2,
|
---|
1796 | width / 2, 0.0f, -length + width / 2,
|
---|
1797 | -width / 2, 0.0f, -width / 2,
|
---|
1798 | width / 2, 0.0f, -width / 2,
|
---|
1799 | width / 2, 0.0f, -length,
|
---|
1800 | -width / 2, 0.0f, -length,
|
---|
1801 | -width / 2, 0.0f, -length + width / 2,
|
---|
1802 | width / 2, 0.0f, -length,
|
---|
1803 | -width / 2, 0.0f, -length + width / 2,
|
---|
1804 | width / 2, 0.0f, -length + width / 2,
|
---|
1805 | };
|
---|
1806 |
|
---|
1807 | obj->texcoords = {
|
---|
1808 | 1.0f, 0.5f,
|
---|
1809 | 0.0f, 0.5f,
|
---|
1810 | 0.0f, 0.0f,
|
---|
1811 | 1.0f, 0.5f,
|
---|
1812 | 0.0f, 0.0f,
|
---|
1813 | 1.0f, 0.0f,
|
---|
1814 | 1.0f, 0.51f,
|
---|
1815 | 0.0f, 0.51f,
|
---|
1816 | 0.0f, 0.49f,
|
---|
1817 | 1.0f, 0.51f,
|
---|
1818 | 0.0f, 0.49f,
|
---|
1819 | 1.0f, 0.49f,
|
---|
1820 | 1.0f, 1.0f,
|
---|
1821 | 0.0f, 1.0f,
|
---|
1822 | 0.0f, 0.5f,
|
---|
1823 | 1.0f, 1.0f,
|
---|
1824 | 0.0f, 0.5f,
|
---|
1825 | 1.0f, 0.5f,
|
---|
1826 | };
|
---|
1827 |
|
---|
1828 | float xAxisRotation = asin(ray.y / length);
|
---|
1829 | float yAxisRotation = atan2(-ray.x, -ray.z);
|
---|
1830 |
|
---|
1831 | vec3 normal(rotate(mat4(1.0f), yAxisRotation, vec3(0.0f, 1.0f, 0.0f)) *
|
---|
1832 | rotate(mat4(1.0f), xAxisRotation, vec3(1.0f, 0.0f, 0.0f)) *
|
---|
1833 | vec4(0.0f, 1.0f, 0.0f, 1.0f));
|
---|
1834 |
|
---|
1835 | // To project point P onto line AB:
|
---|
1836 | // projection = A + dot(AP,AB) / dot(AB,AB) * AB
|
---|
1837 | vec3 projOnLaser = start + glm::dot(cam_pos-start, ray) / (length*length) * ray;
|
---|
1838 | vec3 laserToCam = cam_pos - projOnLaser;
|
---|
1839 |
|
---|
1840 | float zAxisRotation = -atan2(glm::dot(glm::cross(normal, laserToCam), glm::normalize(ray)), glm::dot(normal, laserToCam));
|
---|
1841 |
|
---|
1842 | obj->model_base = rotate(mat4(1.0f), zAxisRotation, vec3(0.0f, 0.0f, 1.0f));
|
---|
1843 |
|
---|
1844 | initObject(obj);
|
---|
1845 |
|
---|
1846 | obj->model_transform = rotate(mat4(1.0f), xAxisRotation, vec3(1.0f, 0.0f, 0.0f)) * obj->model_transform;
|
---|
1847 | obj->model_transform = rotate(mat4(1.0f), yAxisRotation, vec3(0.0f, 1.0f, 0.0f)) * obj->model_transform;
|
---|
1848 | obj->model_transform = translate(mat4(1.0f), start) * obj->model_transform;
|
---|
1849 |
|
---|
1850 | return obj;
|
---|
1851 | }
|
---|
1852 |
|
---|
1853 | void initializeBuffers(
|
---|
1854 | GLuint* points_vbo,
|
---|
1855 | GLuint* colors_vbo,
|
---|
1856 | GLuint* selected_colors_vbo,
|
---|
1857 | GLuint* texcoords_vbo,
|
---|
1858 | GLuint* normals_vbo,
|
---|
1859 | GLuint* ubo,
|
---|
1860 | GLuint* model_mat_idx_vbo) {
|
---|
1861 | *points_vbo = 0;
|
---|
1862 | glGenBuffers(1, points_vbo);
|
---|
1863 |
|
---|
1864 | *colors_vbo = 0;
|
---|
1865 | glGenBuffers(1, colors_vbo);
|
---|
1866 |
|
---|
1867 | *selected_colors_vbo = 0;
|
---|
1868 | glGenBuffers(1, selected_colors_vbo);
|
---|
1869 |
|
---|
1870 | *texcoords_vbo = 0;
|
---|
1871 | glGenBuffers(1, texcoords_vbo);
|
---|
1872 |
|
---|
1873 | *normals_vbo = 0;
|
---|
1874 | glGenBuffers(1, normals_vbo);
|
---|
1875 |
|
---|
1876 | *ubo = 0;
|
---|
1877 | glGenBuffers(1, ubo);
|
---|
1878 |
|
---|
1879 | *model_mat_idx_vbo = 0;
|
---|
1880 | glGenBuffers(1, model_mat_idx_vbo);
|
---|
1881 | }
|
---|
1882 |
|
---|
1883 | void populateBuffers(vector<SceneObject*>& objects,
|
---|
1884 | map<GLuint, BufferInfo>& shaderBufferInfo,
|
---|
1885 | GLuint points_vbo,
|
---|
1886 | GLuint colors_vbo,
|
---|
1887 | GLuint selected_colors_vbo,
|
---|
1888 | GLuint texcoords_vbo,
|
---|
1889 | GLuint normals_vbo,
|
---|
1890 | GLuint ubo,
|
---|
1891 | GLuint ubo_idx_vbo,
|
---|
1892 | GLuint asteroid_sp) {
|
---|
1893 | GLsizeiptr num_points = 0;
|
---|
1894 | GLsizeiptr num_objects = 0;
|
---|
1895 |
|
---|
1896 | map<GLuint, unsigned int> shaderCounts;
|
---|
1897 | map<GLuint, unsigned int> shaderUboCounts;
|
---|
1898 |
|
---|
1899 | vector<SceneObject*>::iterator it;
|
---|
1900 |
|
---|
1901 | /* Find all shaders that need to be used and the number of objects and
|
---|
1902 | * number of points for each shader. Construct a map from shader id to count
|
---|
1903 | * of points being drawn using that shader (for thw model matrix ubo, we
|
---|
1904 | * need object counts instead). These will be used to get offsets into the
|
---|
1905 | * vertex buffer for each shader.
|
---|
1906 | */
|
---|
1907 | for (it = objects.begin(); it != objects.end(); ) {
|
---|
1908 | if ((*it)->deleted) {
|
---|
1909 | delete *it;
|
---|
1910 | it = objects.erase(it);
|
---|
1911 | } else {
|
---|
1912 | num_points += (*it)->num_points;
|
---|
1913 | num_objects++;
|
---|
1914 |
|
---|
1915 | if (shaderCounts.count((*it)->shader_program) == 0) {
|
---|
1916 | shaderCounts[(*it)->shader_program] = (*it)->num_points;
|
---|
1917 | shaderUboCounts[(*it)->shader_program] = 1;
|
---|
1918 | } else {
|
---|
1919 | shaderCounts[(*it)->shader_program] += (*it)->num_points;
|
---|
1920 | shaderUboCounts[(*it)->shader_program]++;
|
---|
1921 | }
|
---|
1922 |
|
---|
1923 | it++;
|
---|
1924 | }
|
---|
1925 | }
|
---|
1926 |
|
---|
1927 | // double the buffer sizes to leave room for new objects
|
---|
1928 | num_points *= 2;
|
---|
1929 | num_objects *= 2;
|
---|
1930 |
|
---|
1931 | map<GLuint, unsigned int>::iterator shaderIt;
|
---|
1932 | unsigned int lastShaderCount = 0;
|
---|
1933 | unsigned int lastShaderUboCount = 0;
|
---|
1934 |
|
---|
1935 | /*
|
---|
1936 | * The counts calculated above can be used to get the starting offset of
|
---|
1937 | * each shader in the vertex buffer. Create a map of base offsets to mark
|
---|
1938 | * where the data for the first object using a given shader begins. Also,
|
---|
1939 | * create a map of current offsets to mark where to copy data for the next
|
---|
1940 | * object being added.
|
---|
1941 | */
|
---|
1942 | for (shaderIt = shaderCounts.begin(); shaderIt != shaderCounts.end(); shaderIt++) {
|
---|
1943 | // When populating the buffers, leave as much empty space as space taken up by existing objects
|
---|
1944 | // to allow new objects to be added without immediately having to resize the buffers
|
---|
1945 | shaderBufferInfo[shaderIt->first].vbo_base = lastShaderCount * 2;
|
---|
1946 | shaderBufferInfo[shaderIt->first].ubo_base = lastShaderUboCount * 2;
|
---|
1947 |
|
---|
1948 | /*
|
---|
1949 | cout << "shader: " << shaderIt->first << endl;
|
---|
1950 | cout << "point counts: " << shaderCounts[shaderIt->first] << endl;
|
---|
1951 | cout << "object counts: " << shaderUboCounts[shaderIt->first] << endl;
|
---|
1952 | cout << "vbo_base: " << shaderBufferInfo[shaderIt->first].vbo_base << endl;
|
---|
1953 | cout << "ubo_base: " << shaderBufferInfo[shaderIt->first].ubo_base << endl;
|
---|
1954 | */
|
---|
1955 |
|
---|
1956 | shaderBufferInfo[shaderIt->first].vbo_offset = 0;
|
---|
1957 | shaderBufferInfo[shaderIt->first].ubo_offset = 0;
|
---|
1958 |
|
---|
1959 | shaderBufferInfo[shaderIt->first].vbo_capacity = shaderCounts[shaderIt->first] * 2;
|
---|
1960 | shaderBufferInfo[shaderIt->first].ubo_capacity = shaderUboCounts[shaderIt->first] * 2;
|
---|
1961 |
|
---|
1962 | lastShaderCount += shaderCounts[shaderIt->first];
|
---|
1963 | lastShaderUboCount += shaderUboCounts[shaderIt->first];
|
---|
1964 | }
|
---|
1965 |
|
---|
1966 | // Allocate all the buffers using the counts calculated above
|
---|
1967 |
|
---|
1968 | glBindBuffer(GL_ARRAY_BUFFER, points_vbo);
|
---|
1969 | glBufferData(GL_ARRAY_BUFFER, num_points * sizeof(GLfloat) * 3, NULL, GL_DYNAMIC_DRAW);
|
---|
1970 |
|
---|
1971 | glBindBuffer(GL_ARRAY_BUFFER, colors_vbo);
|
---|
1972 | glBufferData(GL_ARRAY_BUFFER, num_points * sizeof(GLfloat) * 3, NULL, GL_DYNAMIC_DRAW);
|
---|
1973 |
|
---|
1974 | glBindBuffer(GL_ARRAY_BUFFER, selected_colors_vbo);
|
---|
1975 | glBufferData(GL_ARRAY_BUFFER, num_points * sizeof(GLfloat) * 3, NULL, GL_DYNAMIC_DRAW);
|
---|
1976 |
|
---|
1977 | glBindBuffer(GL_ARRAY_BUFFER, texcoords_vbo);
|
---|
1978 | glBufferData(GL_ARRAY_BUFFER, num_points * sizeof(GLfloat) * 2, NULL, GL_DYNAMIC_DRAW);
|
---|
1979 |
|
---|
1980 | glBindBuffer(GL_ARRAY_BUFFER, normals_vbo);
|
---|
1981 | glBufferData(GL_ARRAY_BUFFER, num_points * sizeof(GLfloat) * 3, NULL, GL_DYNAMIC_DRAW);
|
---|
1982 |
|
---|
1983 | glBindBuffer(GL_UNIFORM_BUFFER, ubo);
|
---|
1984 | glBufferData(GL_UNIFORM_BUFFER, num_objects * sizeof(mat4), NULL, GL_DYNAMIC_DRAW);
|
---|
1985 |
|
---|
1986 | glBindBuffer(GL_ARRAY_BUFFER, ubo_idx_vbo);
|
---|
1987 | glBufferData(GL_ARRAY_BUFFER, num_points * sizeof(GLuint), NULL, GL_DYNAMIC_DRAW);
|
---|
1988 |
|
---|
1989 | for (it = objects.begin(); it != objects.end(); it++) {
|
---|
1990 | copyObjectDataToBuffers(**it, shaderBufferInfo,
|
---|
1991 | points_vbo,
|
---|
1992 | colors_vbo,
|
---|
1993 | selected_colors_vbo,
|
---|
1994 | texcoords_vbo,
|
---|
1995 | normals_vbo,
|
---|
1996 | ubo,
|
---|
1997 | ubo_idx_vbo,
|
---|
1998 | asteroid_sp);
|
---|
1999 | }
|
---|
2000 | }
|
---|
2001 |
|
---|
2002 | void copyObjectDataToBuffers(SceneObject& obj,
|
---|
2003 | map<GLuint, BufferInfo>& shaderBufferInfo,
|
---|
2004 | GLuint points_vbo,
|
---|
2005 | GLuint colors_vbo,
|
---|
2006 | GLuint selected_colors_vbo,
|
---|
2007 | GLuint texcoords_vbo,
|
---|
2008 | GLuint normals_vbo,
|
---|
2009 | GLuint ubo,
|
---|
2010 | GLuint model_mat_idx_vbo,
|
---|
2011 | GLuint asteroid_sp) {
|
---|
2012 | BufferInfo* bufferInfo = &shaderBufferInfo[obj.shader_program];
|
---|
2013 |
|
---|
2014 | obj.vertex_vbo_offset = bufferInfo->vbo_base + bufferInfo->vbo_offset;
|
---|
2015 | obj.ubo_offset = bufferInfo->ubo_base + bufferInfo->ubo_offset;
|
---|
2016 |
|
---|
2017 | glBindBuffer(GL_ARRAY_BUFFER, points_vbo);
|
---|
2018 | glBufferSubData(GL_ARRAY_BUFFER, obj.vertex_vbo_offset * sizeof(GLfloat) * 3, obj.points.size() * sizeof(GLfloat), &obj.points[0]);
|
---|
2019 |
|
---|
2020 | glBindBuffer(GL_ARRAY_BUFFER, texcoords_vbo);
|
---|
2021 | glBufferSubData(GL_ARRAY_BUFFER, obj.vertex_vbo_offset * sizeof(GLfloat) * 2, obj.texcoords.size() * sizeof(GLfloat), &obj.texcoords[0]);
|
---|
2022 |
|
---|
2023 | glBindBuffer(GL_ARRAY_BUFFER, model_mat_idx_vbo);
|
---|
2024 | for (unsigned int i = 0; i < obj.num_points; i++) {
|
---|
2025 | glBufferSubData(GL_ARRAY_BUFFER, (obj.vertex_vbo_offset + i) * sizeof(GLuint), sizeof(GLuint), &obj.ubo_offset);
|
---|
2026 | }
|
---|
2027 |
|
---|
2028 | if (obj.type != TYPE_LASER) {
|
---|
2029 | glBindBuffer(GL_ARRAY_BUFFER, colors_vbo);
|
---|
2030 | glBufferSubData(GL_ARRAY_BUFFER, obj.vertex_vbo_offset * sizeof(GLfloat) * 3, obj.colors.size() * sizeof(GLfloat), &obj.colors[0]);
|
---|
2031 |
|
---|
2032 | glBindBuffer(GL_ARRAY_BUFFER, selected_colors_vbo);
|
---|
2033 | glBufferSubData(GL_ARRAY_BUFFER, obj.vertex_vbo_offset * sizeof(GLfloat) * 3, obj.selected_colors.size() * sizeof(GLfloat), &obj.selected_colors[0]);
|
---|
2034 |
|
---|
2035 | glBindBuffer(GL_ARRAY_BUFFER, normals_vbo);
|
---|
2036 | glBufferSubData(GL_ARRAY_BUFFER, obj.vertex_vbo_offset * sizeof(GLfloat) * 3, obj.normals.size() * sizeof(GLfloat), &obj.normals[0]);
|
---|
2037 | }
|
---|
2038 |
|
---|
2039 | obj.model_mat = obj.model_transform * obj.model_base;
|
---|
2040 | glBindBuffer(GL_UNIFORM_BUFFER, ubo);
|
---|
2041 | glBufferSubData(GL_UNIFORM_BUFFER, obj.ubo_offset * sizeof(mat4), sizeof(mat4), value_ptr(obj.model_mat));
|
---|
2042 |
|
---|
2043 | if (obj.type == TYPE_ASTEROID) {
|
---|
2044 | glUseProgram(asteroid_sp);
|
---|
2045 |
|
---|
2046 | ostringstream oss;
|
---|
2047 | oss << "hp[" << obj.ubo_offset << "]";
|
---|
2048 | glUniform1f(glGetUniformLocation(asteroid_sp, oss.str().c_str()), ((Asteroid*)&obj)->hp);
|
---|
2049 | }
|
---|
2050 |
|
---|
2051 | bufferInfo->vbo_offset += obj.num_points;
|
---|
2052 | bufferInfo->ubo_offset++;
|
---|
2053 | }
|
---|
2054 |
|
---|
2055 | void transformObject(SceneObject& obj, const mat4& transform, GLuint ubo) {
|
---|
2056 | if (obj.deleted) return;
|
---|
2057 |
|
---|
2058 | obj.model_transform = transform * obj.model_transform;
|
---|
2059 | obj.model_mat = obj.model_transform * obj.model_base;
|
---|
2060 |
|
---|
2061 | obj.bounding_center = vec3(transform * vec4(obj.bounding_center, 1.0f));
|
---|
2062 |
|
---|
2063 | glBindBuffer(GL_UNIFORM_BUFFER, ubo);
|
---|
2064 | glBufferSubData(GL_UNIFORM_BUFFER, obj.ubo_offset * sizeof(mat4), sizeof(mat4), value_ptr(obj.model_mat));
|
---|
2065 | }
|
---|
2066 |
|
---|
2067 | void translateLaser(Laser* laser, const vec3& translation, GLuint ubo) {
|
---|
2068 | // TODO: A lot of the values calculated here can be calculated once and saved when the laser is created,
|
---|
2069 | // and then re-used here
|
---|
2070 |
|
---|
2071 | vec3 start = vec3(laser->model_transform * vec4(0.0f, 0.0f, 0.0f, 1.0f));
|
---|
2072 | vec3 end = vec3(laser->model_transform * vec4(0.0f, 0.0f, laser->points[38], 1.0f));
|
---|
2073 |
|
---|
2074 | vec3 ray = end - start;
|
---|
2075 | float length = glm::length(ray);
|
---|
2076 |
|
---|
2077 | float xAxisRotation = asin(ray.y / length);
|
---|
2078 | float yAxisRotation = atan2(-ray.x, -ray.z);
|
---|
2079 |
|
---|
2080 | vec3 normal(rotate(mat4(1.0f), yAxisRotation, vec3(0.0f, 1.0f, 0.0f)) *
|
---|
2081 | rotate(mat4(1.0f), xAxisRotation, vec3(1.0f, 0.0f, 0.0f)) *
|
---|
2082 | vec4(0.0f, 1.0f, 0.0f, 1.0f));
|
---|
2083 |
|
---|
2084 | // To project point P onto line AB:
|
---|
2085 | // projection = A + dot(AP,AB) / dot(AB,AB) * AB
|
---|
2086 | vec3 projOnLaser = start + glm::dot(cam_pos - start, ray) / (length*length) * ray;
|
---|
2087 | vec3 laserToCam = cam_pos - projOnLaser;
|
---|
2088 |
|
---|
2089 | float zAxisRotation = -atan2(glm::dot(glm::cross(normal, laserToCam), glm::normalize(ray)), glm::dot(normal, laserToCam));
|
---|
2090 |
|
---|
2091 | laser->model_base = rotate(mat4(1.0f), zAxisRotation, vec3(0.0f, 0.0f, 1.0f));
|
---|
2092 |
|
---|
2093 | transformObject(*laser, translate(mat4(1.0f), translation), ubo);
|
---|
2094 | }
|
---|
2095 |
|
---|
2096 | void updateLaserTarget(Laser* laser, vector<SceneObject*>& objects, GLuint points_vbo, GLuint asteroid_sp) {
|
---|
2097 | // TODO: A lot of the values calculated here can be calculated once and saved when the laser is created,
|
---|
2098 | // and then re-used here
|
---|
2099 |
|
---|
2100 | vec3 start = vec3(laser->model_transform * vec4(0.0f, 0.0f, 0.0f, 1.0f));
|
---|
2101 | vec3 end = vec3(laser->model_transform * vec4(0.0f, 0.0f, laser->points[2] + laser->points[20], 1.0f));
|
---|
2102 |
|
---|
2103 | vec3 intersection(0.0f), closestIntersection(0.0f);
|
---|
2104 | Asteroid* closestAsteroid = NULL;
|
---|
2105 |
|
---|
2106 | for (vector<SceneObject*>::iterator it = objects.begin(); it != objects.end(); it++) {
|
---|
2107 | if ((*it)->type == TYPE_ASTEROID && !(*it)->deleted && getLaserAndAsteroidIntersection(start, end, **it, intersection)) {
|
---|
2108 | // TODO: Implement a more generic algorithm for testing the closest object by getting the distance between the points
|
---|
2109 | if (closestAsteroid == NULL || intersection.z > closestIntersection.z) {
|
---|
2110 | // TODO: At this point, find the real intersection of the laser with one of the asteroid's sides
|
---|
2111 | closestAsteroid = (Asteroid*)*it;
|
---|
2112 | closestIntersection = intersection;
|
---|
2113 | }
|
---|
2114 | }
|
---|
2115 | }
|
---|
2116 |
|
---|
2117 | float width = laser->points[0] - laser->points[2];
|
---|
2118 |
|
---|
2119 | if (laser->targetAsteroid != closestAsteroid) {
|
---|
2120 | if (laser->targetAsteroid != NULL) {
|
---|
2121 | if (laser == leftLaser) {
|
---|
2122 | leftLaserEffect->deleted = true;
|
---|
2123 | } else if (laser == rightLaser) {
|
---|
2124 | rightLaserEffect->deleted = true;
|
---|
2125 | }
|
---|
2126 | }
|
---|
2127 |
|
---|
2128 | EffectOverTime* eot = NULL;
|
---|
2129 |
|
---|
2130 | if (closestAsteroid != NULL) {
|
---|
2131 | eot = new EffectOverTime(closestAsteroid->hp, -20.0f, closestAsteroid);
|
---|
2132 | effects.push_back(eot);
|
---|
2133 | }
|
---|
2134 |
|
---|
2135 | if (laser == leftLaser) {
|
---|
2136 | leftLaserEffect = eot;
|
---|
2137 | } else if (laser == rightLaser) {
|
---|
2138 | rightLaserEffect = eot;
|
---|
2139 | }
|
---|
2140 | }
|
---|
2141 | laser->targetAsteroid = closestAsteroid;
|
---|
2142 |
|
---|
2143 | float length = 5.24f; // I think this was to make sure the laser went past the end of the screen
|
---|
2144 | if (closestAsteroid != NULL) {
|
---|
2145 | length = glm::length(closestIntersection - start);
|
---|
2146 |
|
---|
2147 | // TODO: Find a more generic way of updating the laser hp than in updateLaserTarget
|
---|
2148 |
|
---|
2149 | glUseProgram(asteroid_sp);
|
---|
2150 |
|
---|
2151 | ostringstream oss;
|
---|
2152 | oss << "hp[" << closestAsteroid->ubo_offset << "]";
|
---|
2153 | glUniform1f(glGetUniformLocation(asteroid_sp, oss.str().c_str()), closestAsteroid->hp);
|
---|
2154 | }
|
---|
2155 |
|
---|
2156 | laser->points[20] = -length + width / 2;
|
---|
2157 | laser->points[23] = -length + width / 2;
|
---|
2158 | laser->points[29] = -length + width / 2;
|
---|
2159 | laser->points[38] = -length;
|
---|
2160 | laser->points[41] = -length;
|
---|
2161 | laser->points[44] = -length + width / 2;
|
---|
2162 | laser->points[47] = -length;
|
---|
2163 | laser->points[50] = -length + width / 2;
|
---|
2164 | laser->points[53] = -length + width / 2;
|
---|
2165 |
|
---|
2166 | glBindBuffer(GL_ARRAY_BUFFER, points_vbo);
|
---|
2167 | glBufferSubData(GL_ARRAY_BUFFER, laser->vertex_vbo_offset * sizeof(GLfloat) * 3, laser->points.size() * sizeof(GLfloat), &laser->points[0]);
|
---|
2168 | }
|
---|
2169 |
|
---|
2170 | bool getLaserAndAsteroidIntersection(vec3& start, vec3& end, SceneObject& asteroid, vec3& intersection) {
|
---|
2171 | /*
|
---|
2172 | ### LINE EQUATIONS ###
|
---|
2173 | x = x1 + u * (x2 - x1)
|
---|
2174 | y = y1 + u * (y2 - y1)
|
---|
2175 | z = z1 + u * (z2 - z1)
|
---|
2176 |
|
---|
2177 | ### SPHERE EQUATION ###
|
---|
2178 | (x - x3)^2 + (y - y3)^2 + (z - z3)^2 = r^2
|
---|
2179 |
|
---|
2180 | ### QUADRATIC EQUATION TO SOLVE ###
|
---|
2181 | a*u^2 + b*u + c = 0
|
---|
2182 | WHERE THE CONSTANTS ARE
|
---|
2183 | a = (x2 - x1)^2 + (y2 - y1)^2 + (z2 - z1)^2
|
---|
2184 | b = 2*( (x2 - x1)*(x1 - x3) + (y2 - y1)*(y1 - y3) + (z2 - z1)*(z1 - z3) )
|
---|
2185 | c = x3^2 + y3^2 + z3^2 + x1^2 + y1^2 + z1^2 - 2(x3*x1 + y3*y1 + z3*z1) - r^2
|
---|
2186 |
|
---|
2187 | u = (-b +- sqrt(b^2 - 4*a*c)) / 2a
|
---|
2188 |
|
---|
2189 | If the value under the root is >= 0, we got an intersection
|
---|
2190 | If the value > 0, there are two solutions. Take the one closer to 0, since that's the
|
---|
2191 | one closer to the laser start point
|
---|
2192 | */
|
---|
2193 |
|
---|
2194 | vec3& center = asteroid.bounding_center;
|
---|
2195 |
|
---|
2196 | float a = pow(end.x-start.x, 2) + pow(end.y-start.y, 2) + pow(end.z-start.z, 2);
|
---|
2197 | float b = 2*((start.x-end.x)*(start.x-center.x) + (end.y-start.y)*(start.y-center.y) + (end.z-start.z)*(start.z-center.z));
|
---|
2198 | float c = pow(center.x, 2) + pow(center.y, 2) + pow(center.z, 2) + pow(start.x, 2) + pow(start.y, 2) + pow(start.z, 2) - 2*(center.x*start.x + center.y*start.y + center.z*start.z) - pow(asteroid.bounding_radius, 2);
|
---|
2199 | float discriminant = pow(b, 2) - 4*a*c;
|
---|
2200 |
|
---|
2201 | if (discriminant >= 0.0f) {
|
---|
2202 | // In this case, the negative root will always give the point closer to the laser start point
|
---|
2203 | float u = (-b - sqrt(discriminant)) / (2 * a);
|
---|
2204 |
|
---|
2205 | // Check that the intersection is within the line segment corresponding to the laser
|
---|
2206 | if (0.0f <= u && u <= 1.0f) {
|
---|
2207 | intersection = start + u * (end - start);
|
---|
2208 | return true;
|
---|
2209 | }
|
---|
2210 | }
|
---|
2211 |
|
---|
2212 | return false;
|
---|
2213 | }
|
---|
2214 |
|
---|
2215 | void renderScene(map<GLuint, BufferInfo>& shaderBufferInfo,
|
---|
2216 | GLuint color_sp, GLuint asteroid_sp, GLuint texture_sp, GLuint laser_sp,
|
---|
2217 | GLuint color_vao, GLuint asteroid_vao, GLuint texture_vao, GLuint laser_vao,
|
---|
2218 | GLuint colors_vbo, GLuint selected_colors_vbo,
|
---|
2219 | SceneObject* selectedObject) {
|
---|
2220 |
|
---|
2221 | glUseProgram(color_sp);
|
---|
2222 | glBindVertexArray(color_vao);
|
---|
2223 |
|
---|
2224 | /*
|
---|
2225 | if (selectedObject != NULL) {
|
---|
2226 | glBindBuffer(GL_ARRAY_BUFFER, selected_colors_vbo);
|
---|
2227 | glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, 0, 0);
|
---|
2228 |
|
---|
2229 | glDrawArrays(GL_TRIANGLES, selectedObject->vertex_vbo_offset, selectedObject->num_points);
|
---|
2230 | }
|
---|
2231 | */
|
---|
2232 |
|
---|
2233 | // Uncomment this code when I want to use selected colors again
|
---|
2234 | // glBindBuffer(GL_ARRAY_BUFFER, colors_vbo);
|
---|
2235 | // glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, 0, 0);
|
---|
2236 |
|
---|
2237 | glDrawArrays(GL_TRIANGLES, shaderBufferInfo[color_sp].vbo_base, shaderBufferInfo[color_sp].vbo_offset);
|
---|
2238 |
|
---|
2239 | glUseProgram(asteroid_sp);
|
---|
2240 | glBindVertexArray(asteroid_vao);
|
---|
2241 |
|
---|
2242 | glDrawArrays(GL_TRIANGLES, shaderBufferInfo[asteroid_sp].vbo_base, shaderBufferInfo[asteroid_sp].vbo_offset);
|
---|
2243 |
|
---|
2244 | glUseProgram(texture_sp);
|
---|
2245 | glBindVertexArray(texture_vao);
|
---|
2246 |
|
---|
2247 | glDrawArrays(GL_TRIANGLES, shaderBufferInfo[texture_sp].vbo_base, shaderBufferInfo[texture_sp].vbo_offset);
|
---|
2248 |
|
---|
2249 | glEnable(GL_BLEND);
|
---|
2250 |
|
---|
2251 | glUseProgram(laser_sp);
|
---|
2252 | glBindVertexArray(laser_vao);
|
---|
2253 |
|
---|
2254 | glDrawArrays(GL_TRIANGLES, shaderBufferInfo[laser_sp].vbo_base, shaderBufferInfo[laser_sp].vbo_offset);
|
---|
2255 |
|
---|
2256 | glDisable(GL_BLEND);
|
---|
2257 | }
|
---|
2258 |
|
---|
2259 | void renderSceneGui() {
|
---|
2260 | ImGui_ImplGlfwGL3_NewFrame();
|
---|
2261 |
|
---|
2262 | // 1. Show a simple window.
|
---|
2263 | // Tip: if we don't call ImGui::Begin()/ImGui::End() the widgets automatically appears in a window called "Debug".
|
---|
2264 | /*
|
---|
2265 | {
|
---|
2266 | static float f = 0.0f;
|
---|
2267 | static int counter = 0;
|
---|
2268 | ImGui::Text("Hello, world!"); // Display some text (you can use a format string too)
|
---|
2269 | ImGui::SliderFloat("float", &f, 0.0f, 1.0f); // Edit 1 float using a slider from 0.0f to 1.0f
|
---|
2270 | ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
|
---|
2271 |
|
---|
2272 | ImGui::Checkbox("Demo Window", &show_demo_window); // Edit bools storing our windows open/close state
|
---|
2273 | ImGui::Checkbox("Another Window", &show_another_window);
|
---|
2274 |
|
---|
2275 | if (ImGui::Button("Button")) // Buttons return true when clicked (NB: most widgets return true when edited/activated)
|
---|
2276 | counter++;
|
---|
2277 | ImGui::SameLine();
|
---|
2278 | ImGui::Text("counter = %d", counter);
|
---|
2279 |
|
---|
2280 | ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
|
---|
2281 | }
|
---|
2282 | */
|
---|
2283 |
|
---|
2284 | {
|
---|
2285 | ImGui::SetNextWindowSize(ImVec2(95, 46), ImGuiCond_Once);
|
---|
2286 | ImGui::SetNextWindowPos(ImVec2(10, 50), ImGuiCond_Once);
|
---|
2287 | ImGui::Begin("WndStats", NULL,
|
---|
2288 | ImGuiWindowFlags_NoTitleBar |
|
---|
2289 | ImGuiWindowFlags_NoResize |
|
---|
2290 | ImGuiWindowFlags_NoMove);
|
---|
2291 | ImGui::Text("Score: ???");
|
---|
2292 | ImGui::Text("FPS: %f", fps);
|
---|
2293 | ImGui::End();
|
---|
2294 | }
|
---|
2295 |
|
---|
2296 | {
|
---|
2297 | ImGui::SetNextWindowPos(ImVec2(380, 10), ImGuiCond_Once);
|
---|
2298 | ImGui::SetNextWindowSize(ImVec2(250, 35), ImGuiCond_Once);
|
---|
2299 | ImGui::Begin("WndMenubar", NULL,
|
---|
2300 | ImGuiWindowFlags_NoTitleBar |
|
---|
2301 | ImGuiWindowFlags_NoResize |
|
---|
2302 | ImGuiWindowFlags_NoMove);
|
---|
2303 | ImGui::InvisibleButton("", ImVec2(155, 18));
|
---|
2304 | ImGui::SameLine();
|
---|
2305 | if (ImGui::Button("Main Menu")) {
|
---|
2306 | events.push(EVENT_GO_TO_MAIN_MENU);
|
---|
2307 | }
|
---|
2308 | ImGui::End();
|
---|
2309 | }
|
---|
2310 |
|
---|
2311 | ImGui::Render();
|
---|
2312 | ImGui_ImplGlfwGL3_RenderDrawData(ImGui::GetDrawData());
|
---|
2313 | }
|
---|
2314 |
|
---|
2315 | void renderMainMenu() {
|
---|
2316 | }
|
---|
2317 |
|
---|
2318 | void renderMainMenuGui() {
|
---|
2319 | ImGui_ImplGlfwGL3_NewFrame();
|
---|
2320 |
|
---|
2321 | {
|
---|
2322 | int padding = 4;
|
---|
2323 | ImGui::SetNextWindowPos(ImVec2(-padding, -padding), ImGuiCond_Once);
|
---|
2324 | ImGui::SetNextWindowSize(ImVec2(width + 2 * padding, height + 2 * padding), ImGuiCond_Once);
|
---|
2325 | ImGui::Begin("WndMain", NULL,
|
---|
2326 | ImGuiWindowFlags_NoTitleBar |
|
---|
2327 | ImGuiWindowFlags_NoResize |
|
---|
2328 | ImGuiWindowFlags_NoMove);
|
---|
2329 |
|
---|
2330 | ImGui::InvisibleButton("", ImVec2(10, 80));
|
---|
2331 | ImGui::InvisibleButton("", ImVec2(285, 18));
|
---|
2332 | ImGui::SameLine();
|
---|
2333 | if (ImGui::Button("New Game")) {
|
---|
2334 | events.push(EVENT_GO_TO_GAME);
|
---|
2335 | }
|
---|
2336 |
|
---|
2337 | ImGui::InvisibleButton("", ImVec2(10, 15));
|
---|
2338 | ImGui::InvisibleButton("", ImVec2(300, 18));
|
---|
2339 | ImGui::SameLine();
|
---|
2340 | if (ImGui::Button("Quit")) {
|
---|
2341 | events.push(EVENT_QUIT);
|
---|
2342 | }
|
---|
2343 |
|
---|
2344 | ImGui::End();
|
---|
2345 | }
|
---|
2346 |
|
---|
2347 | ImGui::Render();
|
---|
2348 | ImGui_ImplGlfwGL3_RenderDrawData(ImGui::GetDrawData());
|
---|
2349 | }
|
---|
2350 |
|
---|
2351 | Asteroid* createAsteroid(vec3 pos, GLuint shader) {
|
---|
2352 | Asteroid* obj = new Asteroid();
|
---|
2353 | obj->type = TYPE_ASTEROID;
|
---|
2354 | obj->hp = 10.0f;
|
---|
2355 | obj->shader_program = shader;
|
---|
2356 |
|
---|
2357 | obj->points = {
|
---|
2358 | // front
|
---|
2359 | 1.0f, 1.0f, 1.0f,
|
---|
2360 | -1.0f, 1.0f, 1.0f,
|
---|
2361 | -1.0f, -1.0f, 1.0f,
|
---|
2362 | 1.0f, 1.0f, 1.0f,
|
---|
2363 | -1.0f, -1.0f, 1.0f,
|
---|
2364 | 1.0f, -1.0f, 1.0f,
|
---|
2365 |
|
---|
2366 | // top
|
---|
2367 | 1.0f, 1.0f, -1.0f,
|
---|
2368 | -1.0f, 1.0f, -1.0f,
|
---|
2369 | -1.0f, 1.0f, 1.0f,
|
---|
2370 | 1.0f, 1.0f, -1.0f,
|
---|
2371 | -1.0f, 1.0f, 1.0f,
|
---|
2372 | 1.0f, 1.0f, 1.0f,
|
---|
2373 |
|
---|
2374 | // bottom
|
---|
2375 | 1.0f, -1.0f, 1.0f,
|
---|
2376 | -1.0f, -1.0f, 1.0f,
|
---|
2377 | -1.0f, -1.0f, -1.0f,
|
---|
2378 | 1.0f, -1.0f, 1.0f,
|
---|
2379 | -1.0f, -1.0f, -1.0f,
|
---|
2380 | 1.0f, -1.0f, -1.0f,
|
---|
2381 |
|
---|
2382 | // back
|
---|
2383 | 1.0f, 1.0f, -1.0f,
|
---|
2384 | -1.0f, -1.0f, -1.0f,
|
---|
2385 | -1.0f, 1.0f, -1.0f,
|
---|
2386 | 1.0f, 1.0f, -1.0f,
|
---|
2387 | 1.0f, -1.0f, -1.0f,
|
---|
2388 | -1.0f, -1.0f, -1.0f,
|
---|
2389 |
|
---|
2390 | // right
|
---|
2391 | 1.0f, 1.0f, -1.0f,
|
---|
2392 | 1.0f, 1.0f, 1.0f,
|
---|
2393 | 1.0f, -1.0f, 1.0f,
|
---|
2394 | 1.0f, 1.0f, -1.0f,
|
---|
2395 | 1.0f, -1.0f, 1.0f,
|
---|
2396 | 1.0f, -1.0f, -1.0f,
|
---|
2397 |
|
---|
2398 | // left
|
---|
2399 | -1.0f, 1.0f, 1.0f,
|
---|
2400 | -1.0f, 1.0f, -1.0f,
|
---|
2401 | -1.0f, -1.0f, -1.0f,
|
---|
2402 | -1.0f, 1.0f, 1.0f,
|
---|
2403 | -1.0f, -1.0f, -1.0f,
|
---|
2404 | -1.0f, -1.0f, 1.0f,
|
---|
2405 | };
|
---|
2406 | obj->colors = {
|
---|
2407 | // front
|
---|
2408 | 0.4f, 0.4f, 0.4f,
|
---|
2409 | 0.4f, 0.4f, 0.4f,
|
---|
2410 | 0.4f, 0.4f, 0.4f,
|
---|
2411 | 0.4f, 0.4f, 0.4f,
|
---|
2412 | 0.4f, 0.4f, 0.4f,
|
---|
2413 | 0.4f, 0.4f, 0.4f,
|
---|
2414 |
|
---|
2415 | // top
|
---|
2416 | 0.4f, 0.4f, 0.4f,
|
---|
2417 | 0.4f, 0.4f, 0.4f,
|
---|
2418 | 0.4f, 0.4f, 0.4f,
|
---|
2419 | 0.4f, 0.4f, 0.4f,
|
---|
2420 | 0.4f, 0.4f, 0.4f,
|
---|
2421 | 0.4f, 0.4f, 0.4f,
|
---|
2422 |
|
---|
2423 | // bottom
|
---|
2424 | 0.4f, 0.4f, 0.4f,
|
---|
2425 | 0.4f, 0.4f, 0.4f,
|
---|
2426 | 0.4f, 0.4f, 0.4f,
|
---|
2427 | 0.4f, 0.4f, 0.4f,
|
---|
2428 | 0.4f, 0.4f, 0.4f,
|
---|
2429 | 0.4f, 0.4f, 0.4f,
|
---|
2430 |
|
---|
2431 | // back
|
---|
2432 | 0.4f, 0.4f, 0.4f,
|
---|
2433 | 0.4f, 0.4f, 0.4f,
|
---|
2434 | 0.4f, 0.4f, 0.4f,
|
---|
2435 | 0.4f, 0.4f, 0.4f,
|
---|
2436 | 0.4f, 0.4f, 0.4f,
|
---|
2437 | 0.4f, 0.4f, 0.4f,
|
---|
2438 |
|
---|
2439 | // right
|
---|
2440 | 0.4f, 0.4f, 0.4f,
|
---|
2441 | 0.4f, 0.4f, 0.4f,
|
---|
2442 | 0.4f, 0.4f, 0.4f,
|
---|
2443 | 0.4f, 0.4f, 0.4f,
|
---|
2444 | 0.4f, 0.4f, 0.4f,
|
---|
2445 | 0.4f, 0.4f, 0.4f,
|
---|
2446 |
|
---|
2447 | // left
|
---|
2448 | 0.4f, 0.4f, 0.4f,
|
---|
2449 | 0.4f, 0.4f, 0.4f,
|
---|
2450 | 0.4f, 0.4f, 0.4f,
|
---|
2451 | 0.4f, 0.4f, 0.4f,
|
---|
2452 | 0.4f, 0.4f, 0.4f,
|
---|
2453 | 0.4f, 0.4f, 0.4f,
|
---|
2454 | };
|
---|
2455 | obj->texcoords = { 0.0f };
|
---|
2456 | obj->selected_colors = { 0.0f };
|
---|
2457 |
|
---|
2458 | mat4 T = translate(mat4(1.0f), pos);
|
---|
2459 | mat4 R = rotate(mat4(1.0f), 60.0f * (float)ONE_DEG_IN_RAD, vec3(1.0f, 1.0f, -1.0f));
|
---|
2460 | obj->model_base = T * R * scale(mat4(1.0f), vec3(0.1f, 0.1f, 0.1f));
|
---|
2461 |
|
---|
2462 | obj->translate_mat = T;
|
---|
2463 |
|
---|
2464 | initObject(obj);
|
---|
2465 | // This accounts for the scaling in model_base.
|
---|
2466 | // Dividing by 8 instead of 10 since the bounding radius algorithm
|
---|
2467 | // under-calculates the true value.
|
---|
2468 | // TODO: Once the intersection check with the sides of the asteroid is done,
|
---|
2469 | // this can be removed.
|
---|
2470 | obj->bounding_radius /= 8.0f;
|
---|
2471 |
|
---|
2472 | return obj;
|
---|
2473 | }
|
---|
2474 |
|
---|
2475 | float getRandomNum(float low, float high) {
|
---|
2476 | return low + ((float)rand()/RAND_MAX) * (high-low);
|
---|
2477 | }
|
---|