1 files changed, 46 insertions, 0 deletions
diff --git a/game.c b/game.c
new file mode 100644
index 0000000..53b68cf
--- /dev/null
+++ b/game.c
@@ -0,0 +1,46 @@
+#include "game.h"
+
+GameData game = {0};
+
+void
+game_init(void) {
+	game.time.secs = 12 * GAME_SECS_PER_HOUR;
+	game.time.day_len = 600;
+	game.time.scale = 5;
+	game.paused = false;
+}
+
+void
+game_exit(void) {
+}
+
+void
+game_update(void) {
+	if (game.paused || game.time.day_len <= 0) {
+		return;
+	}
+
+	f64 rate = (f64)GAME_SECS_PER_DAY / game.time.day_len;
+	game.time.secs += GetFrameTime() * rate * game.time.scale;
+}
+
+void
+game_time_set(u32 hour, u32 min, f64 sec) {
+	hour = MIN(hour, 24);
+	min = MIN(min, 60);
+	sec = CLAMP(sec, 0.0, 60.0);
+}
+
+f64
+game_time_of_day(void) {
+	f64 time = fmod(game.time.secs, (f64)GAME_SECS_PER_DAY);
+	if (time < 0.0) {
+		time += GAME_SECS_PER_DAY;
+	}
+	return time;
+}
+
+u32
+game_time_day(void) {
+	return (u32)floor(game.time.secs / GAME_SECS_PER_DAY);
+}