/// operator() handles an event.
virtual void operator()(Event event) {
const auto shifted = static_cast<int32_t>(event.y) + _shift;
if (shifted >= 0 && shifted < _height) {
event.y = shifted;
_handle_event(event);
}
}
void start_game(game *g) {
_world_vertices(g);
_setup_world(g);
_reset_camera(g);
_setup_camera(g);
_update_camera(g);
// Start game
Uint32 start_loop = SDL_GetTicks();
Uint32 last_ticks = SDL_GetTicks();
SDL_Delay(1);
Uint32 cur_ticks = SDL_GetTicks();
SDL_Event e;
size_t count = 0;
while (g->state != ENDED) {
_render_world(g);
// Get time since last frame (ms)
last_ticks = cur_ticks;
cur_ticks = SDL_GetTicks();
if (g->o.enabled) {
// Calculate average and instant FPS
if (g->o.fps_upd & 1) {
g->avg_fps = count / ((cur_ticks - start_loop) / 1000.f);
g->fps = 1000.0 / (cur_ticks - last_ticks);
g->o.fps_upd = 0;
}
// Check if we should render FPS (only 2 times per second)
if ((cur_ticks / 100) % 5 == 0) {
g->o.fps_upd = 2;
} else {
g->o.fps_upd >>= 1;
}
_render_overlay(g);
}
SDL_GL_SwapWindow(g->win);
// Events
while (SDL_PollEvent(&e)) {
_handle_event(g, e);
}
// Update camera
_update_camera(g);
// Update the world
++count;
if (g->state == RUNNING) {
switch (g->step) {
case(WHOLE): world_step(g->w); break;
case(HALF): world_half_step(g->w); break;
}
}
_update_world_buffer(g);
}
}
/// operator() handles an event.
virtual void operator()(Event event) {
event.y = _height - 1 - event.y;
_handle_event(event);
}
/// operator() handles an event.
virtual void operator()(Event event) {
if (event.x >= _left && event.x < _right && event.y >= _bottom && event.y < _top) {
_handle_event(event);
}
}