source: opengl-game/utils.cpp@ 670c09a

feature/imgui-sdl
Last change on this file since 670c09a was 0807aeb, checked in by Dmitry Portnoy <dmp1488@…>, 5 years ago

Spawn asteroids at a regular interval and make them move in the player's direction, change the movement of all game objects to depend on elapsed time and be framerate-independent, and switch from SDL2 timers to the C++ chrono library

  • Property mode set to 100644
File size: 1.2 KB
RevLine 
[203ab1b]1#include "utils.hpp"
[a23fc08]2
[0807aeb]3#include <ctime>
[a23fc08]4#include <iostream>
5
[0807aeb]6#include "compiler.hpp"
7
8#ifdef WINDOWS
9 #include <process.h>
10#else
11 #include <unistd.h>
12#endif
13
14// TODO: Use a more modern method of generating random numbers
15
16void seedRandomNums() {
17#ifdef WINDOWS
18 srand(_getpid() ^ time(nullptr));
19#else
20 srand(getpid() ^ time(nullptr));
21#endif
22}
23
[a23fc08]24float getRandomNum(float low, float high) {
[0807aeb]25 return low + ((float)rand() / RAND_MAX) * (high - low);
[a23fc08]26}
27
28void printVec3(string label, const vec3& v) {
29 cout << label << " -> (" << v.x << "," << v.y << "," << v.z << ")" << endl;
30}
31
32void printVec4(string label, const vec4& v) {
33 cout << label << " -> (" << v.x << "," << v.y << "," << v.z << "," << v.w << ")" << endl;
34}
35
36void printMat4(string label, const mat4& m) {
37 cout << label << ": " << endl;
38 cout << "[ " << m[0][0] << " " << m[1][0] << " " << m[2][0] << " " << m[3][0] << " ]" << endl;
39 cout << "[ " << m[0][1] << " " << m[1][1] << " " << m[2][1] << " " << m[3][1] << " ]" << endl;
40 cout << "[ " << m[0][2] << " " << m[1][2] << " " << m[2][2] << " " << m[3][2] << " ]" << endl;
41 cout << "[ " << m[0][3] << " " << m[1][3] << " " << m[2][3] << " " << m[3][3] << " ]" << endl;
[203ab1b]42}
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