Merge pull request #122 from PikalaxALT/unk_81BAD84

Unk 81 bad84

src/unk_81BAD84.c

@@ -0,0 +1,47 @@
+#include "global.h"
+#include "graphics.h"
+
+const struct {
+    const u8 *gfx;
+    const u8 *tileMap;
+    const u16 *pltt;
+} gUnknown_08617128[] = {
+    {
+        gUnknown_08DD87C0,
+        gUnknown_08DD8EE0,
+        gUnknown_08DD8780
+    }, {
+        gUnknown_08DD90E0,
+        gUnknown_08DD9718,
+        gUnknown_08DD9080
+    }, {
+        gUnknown_08DD98B4,
+        gUnknown_08DD9E58,
+        gUnknown_08DD9874
+    }, {
+        gUnknown_08DDA02C,
+        gUnknown_08DDA63C,
+        gUnknown_08DD9FEC
+    }, {
+        gUnknown_08DDA840,
+        gUnknown_08DDAE40,
+        gUnknown_08DDA800
+    }, {
+        gUnknown_08DDB020,
+        gUnknown_08DDB2C4,
+        gUnknown_08DDAFE0
+    }
+};
+
+void sub_81BAD84(u32 idx)
+{
+    REG_DISPCNT = 0x0000;
+    REG_BG0HOFS = 0x0000;
+    REG_BG0VOFS = 0x0000;
+    REG_BLDCNT = 0x0000;
+    LZ77UnCompVram(gUnknown_08617128[idx].gfx, (void *)BG_CHAR_ADDR(0));
+    LZ77UnCompVram(gUnknown_08617128[idx].tileMap, (void *)BG_SCREEN_ADDR(31));
+    CpuCopy16(gUnknown_08617128[idx].pltt, (void *)PLTT, 0x200);
+    REG_BG0CNT = 0x1f00;
+    REG_DISPCNT = DISPCNT_BG0_ON;
+}