67 lines
1.4 KiB
C
67 lines
1.4 KiB
C
/*
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* Copyright (c) Camden Dixie O'Brien
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* SPDX-License-Identifier: AGPL-3.0-only
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*/
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#include "engine_hooks.h"
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#include <assert.h>
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#include <stdatomic.h>
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#include <stdbool.h>
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#include <stdlib.h>
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#define FRAMERATE 60
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#define INTERVAL (1000 / FRAMERATE)
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int main(int argc, char *argv[])
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{
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int err = SDL_Init(SDL_INIT_VIDEO);
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assert(0 == err);
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SDL_Window *window = SDL_CreateWindow(
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game_conf.win.title, SDL_WINDOWPOS_UNDEFINED,
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SDL_WINDOWPOS_UNDEFINED, game_conf.win.w, game_conf.win.h, 0);
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assert(NULL != window);
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SDL_Renderer *renderer = SDL_CreateRenderer(window, -1, 0);
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assert(NULL != renderer);
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void *gamemem = calloc(1, game_conf.memsize);
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game_init(argc, argv, gamemem, renderer);
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uint64_t prevt = SDL_GetTicks64();
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while (1) {
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uint64_t t = SDL_GetTicks64();
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uint64_t dt = t - prevt;
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if (dt >= INTERVAL) {
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// Handle all events currently in queue
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SDL_Event evt;
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while (SDL_PollEvent(&evt)) {
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if (game_evthandle(gamemem, &evt) != GAMESTATUS_OK)
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goto quit;
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}
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// Update game state
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if (game_update(gamemem, dt) != GAMESTATUS_OK)
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goto quit;
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// Render frame
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SDL_RenderClear(renderer);
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game_render(gamemem, renderer, t);
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SDL_RenderPresent(renderer);
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// Set previous frame draw time
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prevt = t;
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}
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SDL_Delay(2);
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}
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quit:
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game_teardown(gamemem);
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SDL_DestroyRenderer(renderer);
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SDL_DestroyWindow(window);
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SDL_Quit();
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}
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