sub_8122DB0

2 files changed, 112 insertions, 4 deletions

diff --git a/src/field_region_map.c b/src/field_region_map.c
index e8c52de77..74b62bbc7 100644
--- a/src/field_region_map.c
+++ b/src/field_region_map.c
@@ -120,7 +120,7 @@ void sub_8170290(void)
     switch (gUnknown_0203BCD0->state)
     {
         case 0:
-            sub_8122CDC(&gUnknown_0203BCD0->regionMap, FALSE);
+            sub_8122CDC(&gUnknown_0203BCD0->regionMap, 0);
             sub_8124288(0, 0);
             sub_81240D4(1, 1);
             gUnknown_0203BCD0->state ++;
@@ -181,7 +181,7 @@ void sub_8170290(void)
 
 static void sub_8170428(void)
 {
-    if (gUnknown_0203BCD0->regionMap.unk_02)
+    if (gUnknown_0203BCD0->regionMap.unk_002 != 0)
     {
         FillWindowPixelBuffer(0, 0x11);
         PrintTextOnWindow(0, 1, gUnknown_0203BCD0->regionMap.mapSecName, 0, 1, 0, NULL);
diff --git a/src/region_map.c b/src/region_map.c
index 1f54108d6..dc53f1ec6 100644
--- a/src/region_map.c
+++ b/src/region_map.c
@@ -2,6 +2,9 @@
 // Includes
 #include "global.h"
 #include "region_map.h"
+#include "menu.h"
+#include "palette.h"
+#include "bg.h"
 
 // Static type declarations
 
@@ -20,18 +23,30 @@ void sub_8122CF8(struct RegionMap *regionMap, struct UnkStruct_8122CF8 *arg1, bo
 bool8 sub_8122DB0(void);
 u8 sub_8123254(void);
 u8 sub_81230C4(void);
+void sub_81238AC(void);
+u16 sub_8123EB4(u16 mapSecId);
+u8 get_flagnr_blue_points(u16 mapSecId);
+void sub_81236C4(s32 a0, s32 a1, s32 a2, s32 a3, u16 a4, u16 a5, u16 a6);
+void sub_8123FB0(void);
+void sub_81237B4(void);
 
 // .rodata
 
+extern const u8 gUnknown_0859F77C[];
+extern const u8 gUnknown_085A04E0[];
+extern const u16 gUnknown_0859F73C[];
+extern const u8 gUnknown_0859F60C[];
+extern const u8 gUnknown_0859F650[];
+
 // .text
 
-void sub_8122CDC(struct RegionMap *regionMap, bool8 argument)
+void sub_8122CDC(struct RegionMap *regionMap, u8 argument)
 {
     sub_8122CF8(regionMap, NULL, argument);
     while (sub_8122DB0());
 }
 
-void sub_8122CF8(struct RegionMap *regionMap, struct UnkStruct_8122CF8 *arg1, bool8 arg2)
+void sub_8122CF8(struct RegionMap *regionMap, struct UnkStruct_8122CF8 *arg1, u8 arg2)
 {
     gUnknown_0203A144 = regionMap;
     gUnknown_0203A144->unk_079 = 0;
@@ -52,3 +67,96 @@ void sub_8122CF8(struct RegionMap *regionMap, struct UnkStruct_8122CF8 *arg1, bo
         gUnknown_0203A144->unk_083 = FALSE;
     }
 }
+
+void sub_8122D88(struct RegionMap *regionMap)
+{
+    gUnknown_0203A144 = regionMap;
+    sub_81238AC();
+    gUnknown_0203A144->unk_074 = gUnknown_0203A144->unk_054;
+    gUnknown_0203A144->unk_076 = gUnknown_0203A144->unk_056;
+}
+
+bool8 sub_8122DB0(void)
+{
+    switch (gUnknown_0203A144->unk_079)
+    {
+        case 0:
+            if (gUnknown_0203A144->unk_083)
+            {
+                decompress_and_copy_tile_data_to_vram(gUnknown_0203A144->unk_080, gUnknown_0859F77C, 0, 0, 0);
+            }
+            else
+            {
+                LZ77UnCompVram(gUnknown_0859F77C, (u16 *)BG_SCREEN_ADDR(16));
+            }
+            break;
+        case 1:
+            if (gUnknown_0203A144->unk_083)
+            {
+                if (!free_temp_tile_data_buffers_if_possible())
+                {
+                    decompress_and_copy_tile_data_to_vram(gUnknown_0203A144->unk_080, gUnknown_085A04E0, 0, 0, 1);
+                }
+            }
+            else
+            {
+                LZ77UnCompVram(gUnknown_085A04E0, (u16 *)BG_SCREEN_ADDR(28));
+            }
+            break;
+        case 2:
+            if (!free_temp_tile_data_buffers_if_possible())
+            {
+                LoadPalette(gUnknown_0859F73C, 0x70, 0x60);
+            }
+            break;
+        case 3:
+            LZ77UnCompWram(gUnknown_0859F60C, gUnknown_0203A144->unk_184);
+            break;
+        case 4:
+            LZ77UnCompWram(gUnknown_0859F650, gUnknown_0203A144->unk_284);
+            break;
+        case 5:
+            sub_81238AC();
+            gUnknown_0203A144->unk_074 = gUnknown_0203A144->unk_054;
+            gUnknown_0203A144->unk_076 = gUnknown_0203A144->unk_056;
+            gUnknown_0203A144->mapSecId = sub_8123EB4(gUnknown_0203A144->mapSecId);
+            gUnknown_0203A144->unk_002 = get_flagnr_blue_points(gUnknown_0203A144->mapSecId);
+            GetMapName(gUnknown_0203A144->mapSecName, gUnknown_0203A144->mapSecId, 16);
+            break;
+        case 6:
+            if (gUnknown_0203A144->unk_078 == 0)
+            {
+                sub_81236C4(0, 0, 0, 0, 0x100, 0x100, 0);
+            }
+            else
+            {
+                gUnknown_0203A144->unk_05c = gUnknown_0203A144->unk_054 * 8 - 0x34;
+                gUnknown_0203A144->unk_05e = gUnknown_0203A144->unk_056 * 8 - 0x44;
+                gUnknown_0203A144->unk_064 = gUnknown_0203A144->unk_054;
+                gUnknown_0203A144->unk_066 = gUnknown_0203A144->unk_056;
+                sub_81236C4(gUnknown_0203A144->unk_05c, gUnknown_0203A144->unk_05e, 0x38, 0x48, 0x80, 0x80, 0);
+            }
+            break;
+        case 7:
+            sub_8123FB0();
+            sub_81237B4();
+            gUnknown_0203A144->unk_01c = 0;
+            gUnknown_0203A144->unk_020 = 0;
+            gUnknown_0203A144->unk_07a = 0;
+            gUnknown_0203A144->unk_07e = 0;
+            if (gUnknown_0203A144->unk_083)
+            {
+                SetBgAttribute(gUnknown_0203A144->unk_080, BG_CTRL_ATTR_MAPBASEINDEX, 2);
+                SetBgAttribute(gUnknown_0203A144->unk_080, BG_CTRL_ATTR_VISIBLE, gUnknown_0203A144->unk_081);
+                SetBgAttribute(gUnknown_0203A144->unk_080, BG_CTRL_ATTR_CHARBASEINDEX, gUnknown_0203A144->unk_082);
+                SetBgAttribute(gUnknown_0203A144->unk_080, BG_CTRL_ATTR_PRIORITY, 1);
+                SetBgAttribute(gUnknown_0203A144->unk_080, BG_CTRL_ATTR_SCREENSIZE, 1);
+            }
+            gUnknown_0203A144->unk_079 ++;
+            return FALSE;
+        default:
+            return FALSE;
+    }
+    gUnknown_0203A144->unk_079 ++;
+    return TRUE;
+}