int main(int argc, char *argv[])
{
std::string filename = "script/test.lua";
if (argc > 1)
{
filename = argv[1];
}
if (SDL_Init(SDL_INIT_VIDEO) < 0)
{
std::cout << "Error initializing SDL: " << SDL_GetError() << std::endl;
return 1;
}
SDL_Window *window = SDL_CreateWindow("My Game Window",
SDL_WINDOWPOS_CENTERED,
SDL_WINDOWPOS_CENTERED,
640, 480,
SDL_WINDOW_SHOWN | SDL_WINDOW_OPENGL);
SDL_GLContext glContext = SDL_GL_CreateContext(window);
if (glContext == nullptr)
{
std::cout << "Error creating OpenGL context." << std::endl;
return 1;
}
const unsigned char *version = glGetString(GL_VERSION);
if (version == nullptr)
{
std::cout << "Error creating OpenGL context." << std::endl;
return 1;
}
// SDL_GL_MakeCurrent(window, glContext);
SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 3);
SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 3);
SDL_GL_SetAttribute(SDL_GL_RED_SIZE, 8);
SDL_GL_SetAttribute(SDL_GL_GREEN_SIZE, 8);
SDL_GL_SetAttribute(SDL_GL_BLUE_SIZE, 8);
SDL_GL_SetAttribute(SDL_GL_ALPHA_SIZE, 8);
SDL_GL_SetAttribute(SDL_GL_BUFFER_SIZE, 32);
SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 0);
// MUST make a context AND make it current BEFORE glewInit()!
glewExperimental = GL_TRUE;
GLenum glewStatus = glewInit();
if (glewStatus != 0)
{
std::cout << "Error initializing glew: " << glewGetErrorString(glewStatus) << std::endl;
return 1;
}
// OpenGL 2d perspective
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glOrtho(0.0f, 640.0f, 480.0f, 0.0f, -1.0f, 1.0f);
// Initialize modelview matrix
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glEnable(GL_BLEND);
glDisable(GL_LIGHTING);
glDisable(GL_DEPTH_TEST);
Bullet origin{320.0f, 120.0f, 0.0f, 0.0f};
BulletLuaUtils::Rect player{320.0f, 240.0f, 4.0f, 4.0f};
// Create a new bullet manager and make it govern the window + 100px padding
BulletManager manager{-100, -100, 840, 680, player};
bool collision{false};
bool frameAdvanceMode{false};
float bestTime{0.0f};
Stopwatch timer;
// Create Font
Font font{"DroidSansFallback.ttf"};
bool running = true;
while (running)
{
SDL_Event e;
while (SDL_PollEvent(&e))
{
if (e.type == SDL_QUIT)
{
running = false;
}
else if (e.type == SDL_KEYDOWN)
{
if (e.key.keysym.sym == SDLK_ESCAPE)
{
running = false;
}
else if (e.key.keysym.sym == SDLK_SPACE)
{
timer.start();
manager.clear();
manager.createBulletFromFile(filename, &origin);
}
else if (e.key.keysym.sym == SDLK_c)
{
collision = !collision;
}
else if (e.key.keysym.sym == SDLK_f)
{
frameAdvanceMode = !frameAdvanceMode;
}
else if (e.key.keysym.sym == SDLK_a)
{
if (frameAdvanceMode)
manager.tick();
}
}
}
glClearColor(1.0f, 1.0f, 1.0f, 0.0f);
glClear(GL_COLOR_BUFFER_BIT);
if (!frameAdvanceMode)
manager.tick();
int x, y;
SDL_GetMouseState(&x, &y);
player.x = x;
player.y = y;
if (manager.checkCollision())
{
manager.vanishAll();
if (timer.getFloatTime() > bestTime)
bestTime = timer.getFloatTime();
timer.stop();
}
glBegin(GL_QUADS);
{
glColor4f(0.0f, 0.0f, 1.0f, 1.0f);
glVertex2f(player.x , player.y);
glVertex2f(player.x + player.w, player.y);
glVertex2f(player.x + player.w, player.y + player.h);
glVertex2f(player.x , player.y + player.h);
}
glEnd();
manager.draw();
if (collision)
manager.drawCollision();
glColor4f(0.2f, 0.2f, 0.2f, 1.0f);
font.draw(10.0f, 20.0f, format("Current %.3f", timer.getFloatTime()));
font.draw(10.0f, 40.0f, format("Best %.3f", bestTime));
font.draw(10.0f, 470.0f, "Press Space to Begin");
font.draw(460.0f, 430.0f, "c = toggle collision boxes");
font.draw(460.0f, 450.0f, "f = frame advance mode");
font.draw(460.0f, 470.0f, "a = advance frame");
SDL_GL_SwapWindow(window);
}
SDL_GL_DeleteContext(glContext);
SDL_Quit();
return 0;
}
