1 | #include "game-gui-sdl.hpp"
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2 |
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3 | #include <map>
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4 | #include <queue>
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5 |
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6 | #include "consts.hpp"
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7 |
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8 | using namespace std;
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9 |
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10 | /*
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11 | // Temporary to allow the program using this class to receive events other than keyboard events
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12 | // Remove once I add a better game-gui wrapper for doing that
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13 | queue<SDL_Event> events;
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14 |
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15 | queue<MouseEvent> mouseEvents;
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16 | */
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17 |
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18 | string GameGui_SDL::s_errorMessage;
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19 |
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20 | string& GameGui_SDL::getError() {
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21 | GameGui_SDL::s_errorMessage = SDL_GetError();
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22 |
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23 | return GameGui_SDL::s_errorMessage;
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24 | }
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25 |
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26 | bool GameGui_SDL::init() {
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27 | // may want to define SDL_INIT_NOPARACHUTE when I start handling crashes since it
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28 | // prevents SDL from setting up its own handlers for SIG_SEGV and stuff like that
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29 |
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30 | GameGui_SDL::s_errorMessage = "No error";
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31 |
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32 | if (SDL_Init(SDL_INIT_EVERYTHING) < 0) {
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33 | return RTWO_ERROR;
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34 | }
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35 |
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36 | int imgFlags = IMG_INIT_PNG;
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37 | if (!(IMG_Init(imgFlags) & imgFlags)) {
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38 | return RTWO_ERROR;
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39 | }
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40 |
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41 | if (TTF_Init() == -1) {
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42 | return RTWO_ERROR;
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43 | }
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44 |
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45 | return RTWO_SUCCESS;
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46 | }
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47 |
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48 | void GameGui_SDL::shutdown() {
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49 | SDL_Quit();
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50 | }
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51 |
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52 | void* GameGui_SDL::createWindow(const string& title, int width, int height, bool fullscreen) {
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53 | // TODO: Make an OpenGL version of the SDL_CreateWindow call as well
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54 |
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55 | // On Apple's OS X you must set the NSHighResolutionCapable Info.plist property to YES,
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56 | // otherwise you will not receive a High DPI OpenGL canvas.
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57 |
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58 | SDL_DisplayMode dm;
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59 | SDL_GetCurrentDisplayMode(0, &dm);
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60 |
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61 | if (fullscreen) {
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62 | width = dm.w;
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63 | height = dm.h;
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64 | }
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65 |
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66 | uint32_t flags = SDL_WINDOW_VULKAN | (fullscreen ? SDL_WINDOW_FULLSCREEN : SDL_WINDOW_RESIZABLE);
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67 |
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68 | window = SDL_CreateWindow(title.c_str(),
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69 | SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED,
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70 | width, height, flags);
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71 |
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72 | return window;
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73 | }
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74 |
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75 | void GameGui_SDL::destroyWindow() {
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76 | // TODO: This function can throw some errors. They should be handled
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77 | SDL_DestroyWindow(window);
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78 | }
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79 |
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80 | void GameGui_SDL::processEvents() {
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81 | }
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82 |
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83 | int GameGui_SDL::pollEvent(UIEvent* event) {
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84 | SDL_Event e;
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85 |
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86 | /* The trackpad on OSX triggers both SDL_MOUSE and SDL_FINGER events, so just treat them both
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87 | * as mouse events since this game isn't targeting mobile devices
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88 | */
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89 |
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90 | if (SDL_PollEvent(&e)) {
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91 | switch(e.type) {
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92 | case SDL_QUIT:
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93 | event->type = UI_EVENT_QUIT;
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94 | break;
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95 | case SDL_WINDOWEVENT:
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96 | event->type = UI_EVENT_WINDOW;
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97 | break;
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98 | case SDL_KEYUP:
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99 | case SDL_KEYDOWN:
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100 | event->type = UI_EVENT_KEY;
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101 | event->key.keycode = e.key.keysym.scancode;
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102 | break;
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103 | case SDL_MOUSEBUTTONDOWN:
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104 | case SDL_FINGERDOWN:
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105 | event->type = UI_EVENT_MOUSEBUTTONDOWN;
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106 | break;
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107 | case SDL_MOUSEBUTTONUP:
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108 | case SDL_FINGERUP:
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109 | event->type = UI_EVENT_MOUSEBUTTONUP;
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110 | break;
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111 | case SDL_MOUSEMOTION:
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112 | case SDL_FINGERMOTION:
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113 | event->type = UI_EVENT_MOUSEMOTION;
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114 | break;
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115 | // Ignore the following events
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116 | case SDL_AUDIODEVICEADDED:
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117 | case SDL_AUDIODEVICEREMOVED:
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118 | event = nullptr;
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119 | return 0;
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120 | break;
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121 | default:
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122 | cout << "Unknown event type: 0x" << hex << e.type << dec << endl;
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123 | event = nullptr;
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124 | return 0;
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125 | }
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126 |
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127 | return 1;
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128 | }
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129 |
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130 | event = nullptr;
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131 | return 0;
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132 | }
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133 |
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134 | #ifdef GAMEGUI_INCLUDE_VULKAN
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135 |
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136 | bool GameGui_SDL::createVulkanSurface(VkInstance instance, VkSurfaceKHR* surface) {
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137 | return SDL_Vulkan_CreateSurface(window, instance, surface) ?
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138 | RTWO_SUCCESS : RTWO_ERROR;
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139 | }
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140 |
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141 | #endif
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142 |
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143 | vector<const char*> GameGui_SDL::getRequiredExtensions() {
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144 | uint32_t extensionCount = 0;
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145 | SDL_Vulkan_GetInstanceExtensions(window, &extensionCount, nullptr);
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146 |
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147 | vector<const char*> extensions(extensionCount);
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148 | SDL_Vulkan_GetInstanceExtensions(window, &extensionCount, extensions.data());
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149 |
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150 | return extensions;
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151 | }
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152 |
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153 | void GameGui_SDL::getWindowSize(int* width, int* height) {
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154 | SDL_GetWindowSize(window, width, height);
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155 | }
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