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#include <SDL3/SDL.h>
#include <vecmath.h>
#include <physics.h>
#include <stdlib.h>
#include <assert.h>
#include "../dat.h"
#define SBODY 4096
static void process_events(void);
static void render(void);
static SDL_Window *window;
static SDL_Renderer *renderer;
static bool running;
static Uint64 old_ticks, new_ticks;
void
renderrect(vec2 p, vec2 s)
{
SDL_RenderRect(renderer, &(SDL_FRect){
.x = p[0] - s[0],
.y = p[1] - s[1],
.w = s[0] * 2.0,
.h = s[1] * 2.0
});
}
int
main()
{
if(!SDL_Init(SDL_INIT_VIDEO | SDL_INIT_AUDIO)) {
fprintf(stderr, "SDL_Init(): %s\n", SDL_GetError());
return 1;
}
if(!SDL_CreateWindowAndRenderer("window", 800, 600, SDL_WINDOW_OPENGL, &window, &renderer)) {
fprintf(stderr, "SDL_CreateWindowAndRenderer: %s\n", SDL_GetError());
return -1;
}
SDL_SetRenderVSync(renderer, 1);
#define FLOAT_RAND (2 * (rand() / (float)RAND_MAX) - 1)
for(int i = 0; i < SBODY; i++) {
BodyID b = phxnew(BTYPE_AABB);
assert(b != -1);
phxsetpos(b, rand() % 800, rand() % 600);
phxsetsize(b, 5.0, 5.0);
phxapplyaccel(b, (float[]){ (150 / PHX_TICK_TIME) * FLOAT_RAND, (150 / PHX_TICK_TIME) * FLOAT_RAND });
}
phxsetmap(8, 8, (int[]) {
0, 0, 0, 0, 0, 0, 0, 0,
0, 1, 0, 0, 0, 1, 0, 0,
0, 1, 1, 0, 0, 1, 1, 0,
0, 1, 1, 0, 0, 1, 1, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 1, 1, 0, 0, 1, 1, 0,
0, 1, 1, 0, 0, 1, 1, 0,
0, 0, 1, 0, 0, 0, 1, 0,
});
running = 1;
old_ticks = SDL_GetTicksNS();
while(running) {
CollisionEvent event;
double delta;
process_events();
new_ticks = SDL_GetTicksNS();
delta = (new_ticks - old_ticks) / 1000000000.0;
old_ticks = new_ticks;
static float accum = 0;
accum += delta;
while(accum >= PHX_TICK_TIME) {
phxfixtick();
while(phxnextcollevent(&event)) {
printf("Collision with %d and %d\n", event.body1, event.body2);
}
accum -= PHX_TICK_TIME;
}
render();
}
SDL_DestroyWindow(window);
SDL_Quit();
return 0;
}
void
process_events()
{
SDL_Event event;
while(SDL_PollEvent(&event)) {
switch(event.type) {
case SDL_EVENT_QUIT:
running = false;
break;
}
}
}
void
render(void)
{
SDL_SetRenderDrawColor(renderer, 0x00, 0x00, 0x00, 0xFF);
SDL_RenderClear(renderer);
SDL_SetRenderDrawColor(renderer, 0xFF, 0x00, 0xFF, 0xFF);
for(int y = 0; y < phxmapheight; y++)
for(int x = 0; x < phxmapwidth; x++) {
if(!phxmapbuffer[x + y * phxmapwidth])
continue;
renderrect((vec2){ x * 32, y * 32 }, (vec2){ 16, 16 });
}
SDL_SetRenderDrawColor(renderer, 0xFF, 0xFF, 0xFF, 0xFF);
for(int i = 0; i < phxbodypoolsize; i++) {
vec2 p, s;
Body *b = phxbodypool + i;
if(!b->active)
continue;
renderrect(b->pos, b->size);
}
SDL_RenderPresent(renderer);
}
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