cable car util

1 files changed, 46 insertions, 0 deletions

diff --git a/src/engine/cable_car_util.c b/src/engine/cable_car_util.c
new file mode 100644
index 000000000..27f703b42
--- /dev/null
+++ b/src/engine/cable_car_util.c
@@ -0,0 +1,46 @@
+#include "global.h"
+#include "cable_car_util.h"
+
+// static types
+
+// static declarations
+
+// rodata
+
+// text
+
+void CableCarUtil_FillWrapped(void *dest, u16 value, u8 x, u8 y, u8 width, u8 height)
+{
+    u8 i;
+    u8 j;
+    u8 _x;
+    u8 _y;
+
+    for (i = 0, _y = y; i < height; i++)
+    {
+        for (_x = x, j = 0; j < width; j++)
+        {
+            *(u16 *)&((u8 *)dest)[_y * 64 + _x * 2] = value;
+            _x = (_x + 1) % 32;
+        }
+        _y = (_y + 1) % 32;
+    }
+}
+void CableCarUtil_CopyWrapped(void *dest, const u16 *src, u8 x, u8 y, u8 width, u8 height)
+{
+    u8 i;
+    u8 j;
+    u8 _x;
+    u8 _y;
+    const u16 *_src;
+
+    for (i = 0, _src = src, _y = y; i < height; i++)
+    {
+        for (_x = x, j = 0; j < width; j++)
+        {
+            *(u16 *)&((u8 *)dest)[_y * 64 + _x * 2] = *_src++;
+            _x = (_x + 1) % 32;
+        }
+        _y = (_y + 1) % 32;
+    }
+}