Cleanup bg.c

1 files changed, 70 insertions, 0 deletions

diff --git a/include/bg.h b/include/bg.h
new file mode 100644
index 000000000..b9410afa3
--- /dev/null
+++ b/include/bg.h
@@ -0,0 +1,70 @@
+#ifndef GUARD_BG_H
+#define GUARD_BG_H
+
+#include "global.h"
+
+enum {
+    BG_CTRL_ATTR_VISIBLE = 1,
+    BG_CTRL_ATTR_CHARBASEINDEX = 2,
+    BG_CTRL_ATTR_MAPBASEINDEX = 3,
+    BG_CTRL_ATTR_SCREENSIZE = 4,
+    BG_CTRL_ATTR_PALETTEMODE = 5,
+    BG_CTRL_ATTR_PRIORITY = 6,
+    BG_CTRL_ATTR_MOSAIC = 7,
+    BG_CTRL_ATTR_WRAPAROUND = 8,
+};
+
+struct BgControl {
+    struct BgConfig {
+        u16 visible:1;
+        u16 unknown_1:1;
+        u16 screenSize:2;
+        u16 priority:2;
+        u16 mosaic:1;
+        u16 wraparound:1;
+        
+        u16 charBaseIndex:2;
+        u16 mapBaseIndex:5;
+        u16 paletteMode:1;
+        
+        u8 unknown_2;
+        u8 unknown_3;
+    } configs[4];
+    
+    u16 bgVisibilityAndMode;
+};
+
+struct BgTemplate {
+    u32 bg:2;
+    u32 charBaseIndex:2;
+    u32 mapBaseIndex:5;
+    u32 screenSize:2;
+    u32 paletteMode:1;
+    u32 priority:2;
+    u32 baseTile:10;
+};
+
+struct BgConfig2 {
+    u32 baseTile:10;
+    u32 basePalette:4;
+    u32 unk_3:18;
+    
+    void* tilemap;
+    u32 bg_x;
+    u32 bg_y;
+};
+
+bool32 IsInvalidBg32(u8);
+void ResetBgControlStructs();
+u16 GetBgMetricTextMode(u8, u8);
+u32 GetBgMetricAffineMode(u8, u8);
+u32 GetBgType(u8);
+void SetTextModeAndHideBgs();
+bool8 IsInvalidBg(u8);
+bool32 IsTileMapOutsideWram(u8);
+void CopyRectToBgTilemapBufferRect(u8, void*, u8, u8, u8, u8, u8, u8, u8, u8, u8, u16, u16);
+void CopyTileMapEntry(u16*, u16*, s32, u32, u32);
+u32 GetTileMapIndexFromCoords(s32, s32, s32, u32, u32);
+void WriteSequenceToBgTilemapBuffer(u8, u16, u8, u8, u8, u8, u8, s16);
+
+#endif // GUARD_BG_H