1 files changed, 50 insertions, 0 deletions
diff --git a/arm9/src/igt.c b/arm9/src/igt.c
new file mode 100644
index 00000000..843ef396
--- /dev/null
+++ b/arm9/src/igt.c
@@ -0,0 +1,50 @@
+#include "global.h"
+#include "igt.h"
+
+#pragma thumb on
+
+void InitIGT(struct IGT * igt)
+{
+    igt->hours = 0;
+    igt->minutes = 0;
+    igt->seconds = 0;
+}
+
+void AddIGTSeconds(struct IGT * igt, u32 to_add)
+{
+    u32 hours, minutes, seconds;
+    if (igt->hours == 999 && igt->minutes == 59 && igt->seconds == 59)
+        return;
+    seconds = (u32)(igt->seconds + to_add);
+    minutes = (u32)igt->minutes;
+    hours = (u32)igt->hours;
+    if (seconds > 59)
+    {
+        minutes += seconds / 60;
+        seconds %= 60;
+        if (minutes > 59)
+        {
+            hours += minutes / 60;
+            minutes %= 60;
+            if (hours >= 999)
+            {
+                hours = 999;
+                minutes = 59;
+                seconds = 59;
+            }
+        }
+    }
+    igt->hours = (u16)hours;
+    igt->minutes = (u8)minutes;
+    igt->seconds = (u8)seconds;
+}
+
+u16 GetIGTHours(struct IGT * igt)
+{
+    return igt->hours;
+}
+
+u8 GetIGTMinutes(struct IGT * igt)
+{
+    return igt->minutes;
+}