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#include "context.h"
#include "renderer.h"
#include <math.h>
struct texture tex;
struct render_texture rtex;
static
void init_glfw(struct ctx *ctx)
{
if (glfwInit() < 0) {
log_fatal(ERR_GLFW_INIT, "could not init GLFW.");
}
glfwWindowHint(GLFW_RESIZABLE, GLFW_FALSE);
ctx->win = glfwCreateWindow(
ctx->creation_hints.win_width,
ctx->creation_hints.win_height,
ctx->creation_hints.win_title,
NULL,
NULL
);
if (!ctx->win) {
log_fatal(ERR_GLFW_INIT, "could not create GLFW window.");
}
glfwMakeContextCurrent(ctx->win);
glfwSwapInterval(0);
}
static
void deinit_glfw(struct ctx *ctx)
{
glfwDestroyWindow(ctx->win);
glfwTerminate();
}
void init_ctx(struct ctx *ctx, struct ctx_hints creation_hints)
{
ctx->creation_hints = creation_hints;
ctx->ticrate = 1.0 / creation_hints.ticrate;
ctx->prev_tic_ts = 0;
init_glfw(ctx);
init_renderer(&ctx->renderer, ctx);
tex = load_texture("test_img.qoi");
rtex = create_render_texture(320, 320, false);
}
void deinit_ctx(struct ctx *ctx)
{
free_texture(tex);
free_render_texture(rtex);
deinit_renderer(&ctx->renderer);
deinit_glfw(ctx);
}
bool is_game_running(struct ctx *ctx)
{
return !glfwWindowShouldClose(ctx->win);
}
int game_tick(struct ctx *ctx)
{
double current_time = glfwGetTime();
double time_since_tic = current_time - ctx->prev_tic_ts;
int tics = time_since_tic / ctx->ticrate;
if (tics > 0) {
ctx->prev_tic_ts = current_time;
glfwPollEvents();
}
return tics;
}
void game_draw(struct ctx *ctx)
{
bind_render_texture(&ctx->renderer, NULL);
draw_clear((struct color){0.2, 0.2, 0.2, 1});
bind_render_texture(&ctx->renderer, &rtex);
draw_clear((struct color){
1 - (cos(glfwGetTime()) + 1) / 2,
(sin(glfwGetTime()) + 1) / 2,
(cos(glfwGetTime()) + 1) / 2,
1
});
draw_rect(&ctx->renderer, 10, 10, 50, 50);
set_blend_mode(&ctx->renderer, BLEND_ADD);
draw_texture(&ctx->renderer, tex, 100, 100);
draw_texture(&ctx->renderer, tex, 104, 104);
set_blend_mode(&ctx->renderer, BLEND_ALPHA);
draw_texture(&ctx->renderer, tex, 100, 121);
bind_render_texture(&ctx->renderer, NULL);
draw_texture(
&ctx->renderer,
rtex.color,
(400 - 320 * 0.5) + sin(glfwGetTime()) * 100,
200 - 320 * 0.5
);
end_draw(&ctx->renderer);
glfwSwapBuffers(ctx->win);
}
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