i ain't splitting alla this up

1 files changed, 74 insertions, 0 deletions

diff --git a/teensy/teensy_context.c b/teensy/teensy_context.c
new file mode 100644
index 0000000..4a812dd
--- /dev/null
+++ b/teensy/teensy_context.c
@@ -0,0 +1,74 @@
+#include "teensy_context.h"
+#include "teensy_renderer.h"
+
+#include <math.h>
+#include <time.h>
+
+#include "teensy_platform.h"
+
+struct ty_ctx ctx;
+extern struct ty_renderer r;
+
+bool is_init(void)
+{
+    int scr_size = ctx.hints.scr_width * ctx.hints.scr_height;
+    return scr_size > 0;
+}
+
+void ty_init(struct ty_hints hints)
+{
+    ty_init_mem();
+
+    ctx.hints = hints;
+    ctx.ticrate = 1.0 / hints.ticrate;
+    ctx.prev_tic_ts = 0;
+
+    ty_platform_init(&ctx);
+    ty_init_renderer();
+}
+
+void ty_deinit(void)
+{
+    assert(is_init());
+    ty_platform_deinit();
+    ty_deinit_renderer();
+    ty_deinit_mem();
+}
+
+bool ty_is_game_running(void)
+{
+    assert(is_init());
+    return !ty_platform_os_wants_quit();
+}
+
+double ty_get_time(void)
+{
+    assert(is_init());
+    return ty_platform_get_time();
+}
+
+int ty_tick(void)
+{
+    assert(is_init());
+
+    double current_time   = ty_get_time();
+    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;
+        ty_platform_frame(r.screen);
+    }
+    return tics;
+}
+
+// TODO: Find a better place for this
+void ty_sleep(uint64_t ms)
+{
+    assert(is_init());
+
+    struct timespec ts;
+    ts.tv_sec = ms / 1000;
+    ts.tv_nsec = (ms % 1000) * 1000000;
+    nanosleep(&ts, NULL);
+}