Decompile union_room_chat through sub_8020118

5 files changed, 134 insertions, 325 deletions

diff --git a/asm/union_room_chat.s b/asm/union_room_chat.s
index 4bc7f3ce5..1bd768d44 100755
--- a/asm/union_room_chat.s
+++ b/asm/union_room_chat.s
@@ -5,322 +5,6 @@
 
 	.text
 
-	thumb_func_start sub_801FF18
-sub_801FF18: @ 801FF18
-	push {r4-r7,lr}
-	mov r7, r9
-	mov r6, r8
-	push {r6,r7}
-	sub sp, 0x1C
-	adds r7, r0, 0
-	lsls r1, 16
-	lsrs r1, 16
-	mov r9, r1
-	ldr r1, =0xffffff00
-	ldr r3, [sp, 0x14]
-	ands r3, r1
-	ldr r2, =0xffff00ff
-	ands r3, r2
-	movs r0, 0x80
-	lsls r0, 4
-	orrs r3, r0
-	ldr r0, =0xff00ffff
-	ands r3, r0
-	movs r0, 0x80
-	lsls r0, 13
-	orrs r3, r0
-	ldr r5, =0x00ffffff
-	ands r3, r5
-	movs r0, 0xA8
-	lsls r0, 21
-	orrs r3, r0
-	str r3, [sp, 0x14]
-	ldr r0, [sp, 0x18]
-	ands r0, r1
-	movs r1, 0x4
-	orrs r0, r1
-	ands r0, r2
-	movs r1, 0xE0
-	lsls r1, 4
-	orrs r0, r1
-	ldr r1, =0x0000ffff
-	ands r0, r1
-	movs r1, 0xD4
-	lsls r1, 15
-	orrs r0, r1
-	str r0, [sp, 0x18]
-	ldr r1, =gUnknown_082F2D40
-	lsls r0, r7, 1
-	adds r0, r7
-	lsls r0, 2
-	adds r4, r0, r1
-	ldrb r0, [r4, 0xA]
-	cmp r0, 0
-	beq _0801FF98
-	lsls r0, r3, 16
-	movs r1, 0xF9
-	lsls r1, 24
-	adds r0, r1
-	lsrs r0, 16
-	ands r2, r3
-	orrs r2, r0
-	lsrs r1, r2, 24
-	adds r1, 0x7
-	lsls r1, 24
-	adds r0, r5, 0
-	ands r0, r2
-	orrs r0, r1
-	str r0, [sp, 0x14]
-_0801FF98:
-	add r0, sp, 0x14
-	bl AddWindow
-	ldr r5, =gUnknown_02022C88
-	ldr r1, [r5]
-	strh r0, [r1, 0x1E]
-	ldrh r0, [r1, 0x1E]
-	mov r8, r0
-	cmp r0, 0xFF
-	beq _08020082
-	ldrb r0, [r4, 0x9]
-	cmp r0, 0
-	beq _0801FFE0
-	adds r0, r1, 0
-	adds r0, 0x22
-	ldr r1, [r4]
-	bl DynamicPlaceholderTextUtil_ExpandPlaceholders
-	ldr r0, [r5]
-	adds r6, r0, 0
-	adds r6, 0x22
-	b _0801FFE2
-	.pool
-_0801FFE0:
-	ldr r6, [r4]
-_0801FFE2:
-	mov r0, r9
-	lsls r1, r0, 8
-	movs r0, 0
-	movs r2, 0
-	bl ChangeBgY
-	mov r1, r8
-	lsls r0, r1, 24
-	lsrs r5, r0, 24
-	adds r0, r5, 0
-	movs r1, 0x11
-	bl FillWindowPixelBuffer
-	adds r0, r5, 0
-	bl PutWindowTilemap
-	ldr r1, =gUnknown_082F2D40
-	lsls r0, r7, 1
-	adds r0, r7
-	lsls r0, 2
-	adds r4, r0, r1
-	ldrb r0, [r4, 0x4]
-	cmp r0, 0x1
-	bne _08020050
-	adds r0, r5, 0
-	movs r1, 0xA
-	movs r2, 0x2
-	bl sub_80989E0
-	ldrb r3, [r4, 0x5]
-	adds r3, 0x8
-	lsls r3, 24
-	lsrs r3, 24
-	ldrb r0, [r4, 0x6]
-	adds r0, 0x8
-	lsls r0, 24
-	lsrs r0, 24
-	str r0, [sp]
-	movs r0, 0xFF
-	str r0, [sp, 0x4]
-	movs r0, 0
-	str r0, [sp, 0x8]
-	ldrb r0, [r4, 0x7]
-	str r0, [sp, 0xC]
-	ldrb r0, [r4, 0x8]
-	str r0, [sp, 0x10]
-	adds r0, r5, 0
-	movs r1, 0x1
-	adds r2, r6, 0
-	bl AddTextPrinterParameterized5
-	b _0802007A
-	.pool
-_08020050:
-	adds r0, r5, 0
-	movs r1, 0xA
-	movs r2, 0x2
-	bl sub_8098858
-	ldrb r3, [r4, 0x5]
-	ldrb r0, [r4, 0x6]
-	str r0, [sp]
-	movs r0, 0xFF
-	str r0, [sp, 0x4]
-	movs r0, 0
-	str r0, [sp, 0x8]
-	ldrb r0, [r4, 0x7]
-	str r0, [sp, 0xC]
-	ldrb r0, [r4, 0x8]
-	str r0, [sp, 0x10]
-	adds r0, r5, 0
-	movs r1, 0x1
-	adds r2, r6, 0
-	bl AddTextPrinterParameterized5
-_0802007A:
-	ldr r0, =gUnknown_02022C88
-	ldr r0, [r0]
-	mov r1, r8
-	strh r1, [r0, 0x1E]
-_08020082:
-	add sp, 0x1C
-	pop {r3,r4}
-	mov r8, r3
-	mov r9, r4
-	pop {r4-r7}
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end sub_801FF18
-
-	thumb_func_start sub_8020094
-sub_8020094: @ 8020094
-	push {r4,lr}
-	ldr r4, =gUnknown_02022C88
-	ldr r0, [r4]
-	ldrh r0, [r0, 0x1E]
-	cmp r0, 0xFF
-	beq _080200B2
-	lsls r0, 24
-	lsrs r0, 24
-	movs r1, 0
-	bl ClearStdWindowAndFrameToTransparent
-	ldr r0, [r4]
-	ldrb r0, [r0, 0x1E]
-	bl ClearWindowTilemap
-_080200B2:
-	movs r0, 0
-	movs r1, 0
-	movs r2, 0
-	bl ChangeBgY
-	pop {r4}
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end sub_8020094
-
-	thumb_func_start sub_80200C8
-sub_80200C8: @ 80200C8
-	push {r4,lr}
-	ldr r4, =gUnknown_02022C88
-	ldr r0, [r4]
-	ldrh r0, [r0, 0x1E]
-	cmp r0, 0xFF
-	beq _080200E2
-	lsls r0, 24
-	lsrs r0, 24
-	bl RemoveWindow
-	ldr r1, [r4]
-	movs r0, 0xFF
-	strh r0, [r1, 0x1E]
-_080200E2:
-	pop {r4}
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end sub_80200C8
-
-	thumb_func_start sub_80200EC
-sub_80200EC: @ 80200EC
-	push {lr}
-	sub sp, 0x8
-	adds r3, r0, 0
-	lsls r2, 24
-	lsrs r2, 24
-	lsls r3, 19
-	lsrs r3, 16
-	lsls r1, 19
-	lsrs r1, 16
-	str r1, [sp]
-	movs r0, 0xE
-	str r0, [sp, 0x4]
-	movs r0, 0x1
-	adds r1, r2, 0
-	adds r2, r3, 0
-	movs r3, 0x1
-	bl FillWindowPixelRect
-	add sp, 0x8
-	pop {r0}
-	bx r0
-	thumb_func_end sub_80200EC
-
-	thumb_func_start sub_8020118
-sub_8020118: @ 8020118
-	push {r4-r7,lr}
-	mov r7, r10
-	mov r6, r9
-	mov r5, r8
-	push {r5-r7}
-	sub sp, 0x34
-	mov r10, r1
-	ldr r1, [sp, 0x54]
-	lsls r0, 16
-	lsrs r5, r0, 16
-	mov r9, r5
-	lsls r2, 24
-	lsrs r4, r2, 24
-	mov r8, r4
-	lsls r3, 24
-	lsrs r7, r3, 24
-	lsls r1, 24
-	lsrs r6, r1, 24
-	cmp r4, 0
-	beq _08020154
-	bl sub_801F198
-	adds r1, r0, 0
-	subs r1, r5
-	lsls r1, 16
-	lsrs r1, 16
-	adds r0, r5, 0
-	adds r2, r4, 0
-	bl sub_80200EC
-_08020154:
-	add r0, sp, 0xC
-	mov r1, r8
-	strb r1, [r0]
-	strb r7, [r0, 0x1]
-	strb r6, [r0, 0x2]
-	add r4, sp, 0x10
-	movs r0, 0xFC
-	strb r0, [r4]
-	movs r0, 0x14
-	strb r0, [r4, 0x1]
-	movs r0, 0x8
-	strb r0, [r4, 0x2]
-	mov r0, sp
-	adds r0, 0x13
-	mov r1, r10
-	bl StringCopy
-	mov r0, r9
-	lsls r2, r0, 27
-	lsrs r2, 24
-	add r1, sp, 0xC
-	str r1, [sp]
-	movs r0, 0x1
-	negs r0, r0
-	str r0, [sp, 0x4]
-	str r4, [sp, 0x8]
-	movs r0, 0x1
-	movs r1, 0x2
-	movs r3, 0x1
-	bl AddTextPrinterParameterized3
-	add sp, 0x34
-	pop {r3-r5}
-	mov r8, r3
-	mov r9, r4
-	mov r10, r5
-	pop {r4-r7}
-	pop {r0}
-	bx r0
-	thumb_func_end sub_8020118
-
 	thumb_func_start sub_80201A4
 sub_80201A4: @ 80201A4
 	push {r4-r7,lr}
diff --git a/charmap.txt b/charmap.txt
index 2ccac19d3..26d48e101 100644
--- a/charmap.txt
+++ b/charmap.txt
@@ -424,7 +424,7 @@ PLAY_SE = FC 10
 CLEAR = FC 11
 SKIP = FC 12
 CLEAR_TO = FC 13
-UNKNOWN_14 = FC 14
+MIN_LETTER_SPACING = FC 14
 JPN = FC 15
 ENG = FC 16
 PAUSE_MUSIC = FC 17
diff --git a/include/text.h b/include/text.h
index e3944868c..eba3d0c4e 100644
--- a/include/text.h
+++ b/include/text.h
@@ -100,7 +100,7 @@
 #define EXT_CTRL_CODE_CLEAR     0x11
 //
 #define EXT_CTRL_CODE_CLEAR_TO  0x13
-//
+#define EXT_CTRL_CODE_MIN_LETTER_SPACING 0x14
 #define EXT_CTRL_CODE_JPN       0x15
 #define EXT_CTRL_CODE_ENG       0x16
 
diff --git a/src/text.c b/src/text.c
index 39912b17d..43834eab4 100644
--- a/src/text.c
+++ b/src/text.c
@@ -1615,7 +1615,7 @@ u16 RenderText(struct TextPrinter *textPrinter)
                     }
                 }
                 return 2;
-            case 20:
+            case EXT_CTRL_CODE_MIN_LETTER_SPACING:
                 textPrinter->minLetterSpacing = *textPrinter->printerTemplate.currentChar++;
                 return 2;
             case EXT_CTRL_CODE_JPN:
diff --git a/src/union_room_chat.c b/src/union_room_chat.c
index df35d164c..4de15c563 100755
--- a/src/union_room_chat.c
+++ b/src/union_room_chat.c
@@ -66,7 +66,8 @@ struct UnionRoomChat2
     u16 unk1A;
     u16 unk1C;
     u16 unk1E;
-    u8 filler20[0x2148];
+    u8 filler20[0x2];
+    u8 unk22[0x2146];
 };
 
 struct Unk82F2C98
@@ -75,6 +76,18 @@ struct Unk82F2C98
     bool32 (* unk4)(u8 *);
 };
 
+struct Unk82F2D40
+{
+    const u8 *unk0;
+    u8 unk4;
+    u8 unk5;
+    u8 unk6;
+    u8 unk7;
+    u8 unk8;
+    u8 unk9;
+    u8 unkA;
+};
+
 static void sub_801DDD0(struct UnionRoomChat *);
 static void c2_081284E0(void);
 static void sub_801DF20(void);
@@ -143,14 +156,14 @@ void sub_80201A4(void);
 bool32 sub_8020368(void);
 void sub_802093C(void);
 void sub_8020B80(void);
-void sub_801FF18(int, u16);
+static void sub_801FF18(int, u16);
 static void sub_801FDDC(u8, u8, u8);
-void sub_8020094(void);
+static void sub_8020094(void);
 static void sub_801FEBC(void);
-void sub_80200C8(void);
+static void sub_80200C8(void);
 static void sub_801FEE4(void);
-void sub_80200EC(u16, u16, u8);
-void sub_8020118(u16, u8 *, u8, u8, u16);
+static void sub_80200EC(u16, u16, u8);
+static void sub_8020118(u16, u8 *, u8, u8, u8);
 void sub_80209AC(int);
 void sub_8020420(u16, u8 *, u8);
 void sub_80209E0(void);
@@ -164,6 +177,7 @@ extern const u8 gUnknown_082F2AA8[];
 extern const struct BgTemplate gUnknown_082F2C60[4];
 extern const struct WindowTemplate gUnknown_082F2C70[];
 extern const struct Unk82F2C98 gUnknown_082F2C98[];
+extern const struct Unk82F2D40 gUnknown_082F2D40[];
 
 
 void sub_801DD98(void)
@@ -2052,3 +2066,114 @@ static s8 sub_801FF08(void)
 {
     return Menu_ProcessInput();
 }
+
+static void sub_801FF18(int arg0, u16 arg1)
+{
+    const u8 *str;
+    int windowId;
+    struct WindowTemplate template;
+    template.bg = 0;
+    template.tilemapLeft = 8;
+    template.tilemapTop = 16;
+    template.width = 21;
+    template.height = 4;
+    template.paletteNum = 14;
+    template.baseBlock = 0x6A;
+    if (gUnknown_082F2D40[arg0].unkA)
+    {
+        template.tilemapLeft -= 7;
+        template.width += 7;
+    }
+
+    gUnknown_02022C88->unk1E = AddWindow(&template);
+    windowId = gUnknown_02022C88->unk1E;
+    if (gUnknown_02022C88->unk1E == 0xFF)
+        return;
+
+    if (gUnknown_082F2D40[arg0].unk9)
+    {
+        DynamicPlaceholderTextUtil_ExpandPlaceholders(gUnknown_02022C88->unk22, gUnknown_082F2D40[arg0].unk0);
+        str = gUnknown_02022C88->unk22;
+    }
+    else
+    {
+        str = gUnknown_082F2D40[arg0].unk0;
+    }
+
+    ChangeBgY(0, arg1 * 256, 0);
+    FillWindowPixelBuffer(windowId, PIXEL_FILL(1));
+    PutWindowTilemap(windowId);
+    if (gUnknown_082F2D40[arg0].unk4 == 1)
+    {
+        sub_80989E0(windowId, 0xA, 2);
+        AddTextPrinterParameterized5(
+            windowId,
+            1,
+            str,
+            gUnknown_082F2D40[arg0].unk5 + 8,
+            gUnknown_082F2D40[arg0].unk6 + 8,
+            TEXT_SPEED_FF,
+            NULL,
+            gUnknown_082F2D40[arg0].unk7,
+            gUnknown_082F2D40[arg0].unk8);
+    }
+    else
+    {
+        sub_8098858(windowId, 0xA, 2);
+        AddTextPrinterParameterized5(
+            windowId,
+            1,
+            str,
+            gUnknown_082F2D40[arg0].unk5,
+            gUnknown_082F2D40[arg0].unk6,
+            TEXT_SPEED_FF,
+            NULL,
+            gUnknown_082F2D40[arg0].unk7,
+            gUnknown_082F2D40[arg0].unk8);
+    }
+
+    gUnknown_02022C88->unk1E = windowId;
+}
+
+static void sub_8020094(void)
+{
+    if (gUnknown_02022C88->unk1E != 0xFF)
+    {
+        ClearStdWindowAndFrameToTransparent(gUnknown_02022C88->unk1E, FALSE);
+        ClearWindowTilemap(gUnknown_02022C88->unk1E);
+    }
+
+    ChangeBgY(0, 0, 0);
+}
+
+static void sub_80200C8(void)
+{
+    if (gUnknown_02022C88->unk1E != 0xFF)
+    {
+        RemoveWindow(gUnknown_02022C88->unk1E);
+        gUnknown_02022C88->unk1E = 0xFF;
+    }
+}
+
+static void sub_80200EC(u16 x, u16 width, u8 fillValue)
+{
+    FillWindowPixelRect(1, fillValue, x * 8, 1, width * 8, 14);
+}
+
+static void sub_8020118(u16 x, u8 *str, u8 fillValue, u8 arg3, u8 arg4)
+{
+    u8 *str2;
+    u8 sp[38];
+    if (fillValue)
+        sub_80200EC(x, sub_801F198() - x, fillValue);
+
+    sp[0] = fillValue;
+    sp[1] = arg3;
+    sp[2] = arg4;
+    str2 = &sp[4];
+    str2[0] = EXT_CTRL_CODE_BEGIN;
+    str2[1] = EXT_CTRL_CODE_MIN_LETTER_SPACING;
+    str2[2] = 8;
+    StringCopy(&str2[3], str);
+    AddTextPrinterParameterized3(1, 2, x * 8, 1, sp, TEXT_SPEED_FF, str2);
+}