Merge pull request #129 from marijnvdwerf/decompile/money

Decompile money

3 files changed, 293 insertions, 0 deletions

diff --git a/src/money.c b/src/money.c
new file mode 100644
index 000000000..38ca5f817
--- /dev/null
+++ b/src/money.c
@@ -0,0 +1,291 @@
+#include "global.h"
+#include "money.h"
+#include "decompress.h"
+#include "menu.h"
+#include "sprite.h"
+#include "string_util.h"
+
+#define SPRITE_TAG_MONEY (0x2722)
+
+extern u16 gSpecialVar_0x8005;
+extern u8 gUnknown_02038734;
+
+extern const struct SpriteSheet gUnknown_083CF584;
+extern const struct SpritePalette gUnknown_083CF58C;
+extern const struct SpriteTemplate gSpriteTemplate_83CF56C;
+
+bool8 IsEnoughMoney(u32 budget, u32 cost) {
+    if (budget >= cost) {
+        return TRUE;
+    }
+
+    return FALSE;
+}
+
+void sub_80B79B8(u32 *arg0, u32 arg1) {
+    if (*arg0 > *arg0 + arg1) {
+        *arg0 = 999999;
+        return;
+    }
+
+    *arg0 = *arg0 + arg1;
+    if (*arg0 > 999999) {
+        *arg0 = 999999;
+    }
+}
+
+void sub_80B79E0(u32 *arg0, u32 arg1) {
+    if (*arg0 < arg1) {
+        *arg0 = 0;
+    } else {
+        *arg0 = *arg0 - arg1;
+    }
+}
+
+void sub_80B79F8(u8 *buffer, u32 arg1, u8 arg2) {
+    u8 width;
+    u8 i;
+
+    if (arg1 > 999999) {
+        width = 7;
+    } else if (arg1 > 99999) {
+        width = 6;
+    } else if (arg1 > 10000) {
+        width = 5;
+    } else if (arg1 > 999) {
+        width = 4;
+    } else if (arg1 > 99) {
+        width = 3;
+    } else if (arg1 > 9) {
+        width = 2;
+    } else {
+        width = 1;
+    }
+
+    buffer[0] = EXT_CTRL_CODE_BEGIN;
+    buffer[1] = 0x14;
+    buffer[2] = 0x06;
+    buffer += 3;
+
+    for (i = 0; i < arg2 - width; i++) {
+        buffer[0] = CHAR_SPACE;
+        buffer += 1;
+    }
+
+    buffer[0] = CHAR_CURRENCY;
+    buffer += 1;
+
+    buffer = ConvertIntToDecimalString(buffer, arg1);
+
+    buffer[0] = EXT_CTRL_CODE_BEGIN;
+    buffer[1] = 0x14;
+    buffer[2] = 0x00;
+    buffer[3] = EOS;
+}
+
+#ifdef NONMATCHING
+void sub_80B7A94(u32 arg0, u8 size, u8 x, u8 y) {
+    u8 buffer[16];
+    u8 stringWidth;
+
+    sub_80B79F8(buffer, arg0, size);
+    stringWidth = sub_8072CA4(buffer);
+
+    if (stringWidth >= (size + 1) * 8) {
+        MenuPrint(buffer, x, y);
+    } else {
+        u8 pixelX = (size + 1) * 8 - stringWidth;
+        MenuPrint_PixelCoords(buffer, pixelX, y * 8, 1);
+    }
+}
+#else
+
+__attribute__((naked))
+void sub_80B7A94(u32 arg0, u8 arg1, u8 x, u8 y) {
+    asm(".syntax unified\n\
+    push {r4-r7,lr}\n\
+    sub sp, 0x10\n\
+    adds r4, r0, 0\n\
+    lsls r1, 24\n\
+    lsrs r5, r1, 24\n\
+    lsls r2, 24\n\
+    lsrs r6, r2, 24\n\
+    lsls r3, 24\n\
+    lsrs r7, r3, 24\n\
+    mov r0, sp\n\
+    adds r1, r4, 0\n\
+    adds r2, r5, 0\n\
+    bl sub_80B79F8\n\
+    mov r0, sp\n\
+    bl sub_8072CA4\n\
+    lsls r0, 24\n\
+    lsrs r2, r0, 24\n\
+    adds r0, r5, 0x1\n\
+    lsls r0, 3\n\
+    cmp r2, r0\n\
+    blt _080B7ACE\n\
+    mov r0, sp\n\
+    adds r1, r6, 0\n\
+    adds r2, r7, 0\n\
+    bl MenuPrint\n\
+    b _080B7AE4\n\
+_080B7ACE:\n\
+    adds r1, r6, 0x1\n\
+    adds r1, r5\n\
+    lsls r1, 3\n\
+    subs r1, r2\n\
+    lsls r1, 24\n\
+    lsrs r1, 24\n\
+    lsls r2, r7, 3\n\
+    mov r0, sp\n\
+    movs r3, 0x1\n\
+    bl MenuPrint_PixelCoords\n\
+_080B7AE4:\n\
+    add sp, 0x10\n\
+    pop {r4-r7}\n\
+    pop {r0}\n\
+    bx r0\n\
+    .syntax divided\n");
+}
+
+#endif
+
+void sub_80B7AEC(u32 arg0, u8 left, u8 top) {
+    u8 buffer[32];
+    u8 *ptr;
+
+    ptr = &buffer[0];
+
+    ptr[0] = CHAR_CURRENCY;
+    ptr++;
+
+    ptr = ConvertIntToDecimalString(ptr, arg0);
+
+    MenuPrint_RightAligned(buffer, left, top);
+
+    ptr[0] = 0xFC;
+    ptr[1] = 0x14;
+    ptr[2] = 0x00;
+    ptr[3] = 0xFF;
+}
+
+__attribute__((naked))
+void sub_80B7B34(void) {
+    asm(".syntax unified\n\
+    push {r4-r7,lr}\n\
+    mov r7, r9\n\
+    mov r6, r8\n\
+    push {r6,r7}\n\
+    sub sp, 0x4\n\
+    mov r8, r0\n\
+    adds r5, r1, 0\n\
+    mov r9, r2\n\
+    lsls r0, 24\n\
+    lsrs r0, 24\n\
+    mov r8, r0\n\
+    lsls r5, 24\n\
+    lsrs r5, 24\n\
+    mov r1, r9\n\
+    lsls r1, 8\n\
+    mov r9, r1\n\
+    ldr r4, _080B7BD8 @ =gDecoration10000_Gfx\n\
+    adds r0, r1, r4\n\
+    lsls r6, r5, 4\n\
+    subs r6, r5\n\
+    lsls r1, r6, 6\n\
+    mov r3, r8\n\
+    adds r3, 0x1\n\
+    lsls r3, 5\n\
+    ldr r2, _080B7BDC @ =0x06008000\n\
+    adds r3, r2\n\
+    adds r1, r3\n\
+    movs r2, 0x20\n\
+    str r3, [sp]\n\
+    bl CpuFastSet\n\
+    adds r4, 0x80\n\
+    add r9, r4\n\
+    adds r0, r5, 0x1\n\
+    lsls r4, r0, 4\n\
+    subs r4, r0\n\
+    lsls r1, r4, 6\n\
+    ldr r3, [sp]\n\
+    adds r1, r3\n\
+    mov r0, r9\n\
+    movs r2, 0x20\n\
+    bl CpuFastSet\n\
+    movs r3, 0\n\
+    lsls r5, 5\n\
+    mov r0, r8\n\
+    adds r7, r5, r0\n\
+    lsls r6, 1\n\
+    adds r6, 0x1\n\
+    add r6, r8\n\
+    ldr r1, _080B7BE0 @ =0xfffff000\n\
+    adds r5, r1, 0\n\
+    ldr r0, _080B7BE4 @ =0x0600f800\n\
+    mov r12, r0\n\
+    ldr r1, _080B7BE8 @ =0x0600f840\n\
+    mov r9, r1\n\
+    lsls r4, 1\n\
+    adds r4, 0x1\n\
+    add r4, r8\n\
+_080B7BAA:\n\
+    adds r1, r7, r3\n\
+    lsls r1, 1\n\
+    mov r0, r12\n\
+    adds r2, r1, r0\n\
+    adds r0, r3, r6\n\
+    adds r0, r5\n\
+    strh r0, [r2]\n\
+    add r1, r9\n\
+    adds r0, r3, r4\n\
+    adds r0, r5\n\
+    strh r0, [r1]\n\
+    adds r0, r3, 0x1\n\
+    lsls r0, 16\n\
+    lsrs r3, r0, 16\n\
+    cmp r3, 0x3\n\
+    bls _080B7BAA\n\
+    add sp, 0x4\n\
+    pop {r3,r4}\n\
+    mov r8, r3\n\
+    mov r9, r4\n\
+    pop {r4-r7}\n\
+    pop {r0}\n\
+    bx r0\n\
+    .align 2, 0\n\
+_080B7BD8: .4byte gDecoration10000_Gfx\n\
+_080B7BDC: .4byte 0x06008000\n\
+_080B7BE0: .4byte 0xfffff000\n\
+_080B7BE4: .4byte 0x0600f800\n\
+_080B7BE8: .4byte 0x0600f840\n\
+    .syntax divided\n");
+}
+
+void sub_80B7BEC(u32 arg0, u8 x, u8 y) {
+    sub_80B7A94(arg0, 6, x + 6, y + 1);
+}
+
+void sub_80B7C14(u32 arg0, u8 x, u8 y) {
+    MenuDrawTextWindow(x, y, x + 13, y + 3);
+    sub_80B7BEC(arg0, x, y);
+
+    LoadCompressedObjectPic(&gUnknown_083CF584);
+    LoadCompressedObjectPalette(&gUnknown_083CF58C);
+
+    gUnknown_02038734 = CreateSprite(&gSpriteTemplate_83CF56C, x * 8 + 19, y * 8 + 11, 0);
+}
+
+void RemoveMoneyLabelObject(u8 x, u8 y) {
+    DestroySpriteAndFreeResources(&gSprites[gUnknown_02038734]);
+    FreeSpritePaletteByTag(SPRITE_TAG_MONEY);
+    MenuZeroFillWindowRect(x, y, x + 13, y + 3);
+}
+
+bool8 sub_80B7CE8(void) {
+    return IsEnoughMoney(gSaveBlock1.money, gSpecialVar_0x8005);
+}
+
+void sub_80B7D0C(void) {
+    sub_80B79E0(&gSaveBlock1.money, gSpecialVar_0x8005);
+}
diff --git a/src/scrcmd.c b/src/scrcmd.c
index ef77966c6..a8567a2bb 100644
--- a/src/scrcmd.c
+++ b/src/scrcmd.c
@@ -12,6 +12,7 @@
 #include "asm_fieldmap.h"
 #include "main.h"
 #include "menu.h"
+#include "money.h"
 #include "decoration.h"
 #include "field_message_box.h"
 #include "sound.h"
diff --git a/src/trainer_card.c b/src/trainer_card.c
index 560e8ece3..041245bdc 100644
--- a/src/trainer_card.c
+++ b/src/trainer_card.c
@@ -6,6 +6,7 @@
 #include "link.h"
 #include "main.h"
 #include "menu.h"
+#include "money.h"
 #include "palette.h"
 #include "pokedex.h"
 #include "rom4.h"