Decompile some slot_machine functions

2 files changed, 154 insertions, 1 deletions

diff --git a/src/battle_anim.c b/src/battle_anim.c
index b9aa5b898..bdb34365f 100644
--- a/src/battle_anim.c
+++ b/src/battle_anim.c
@@ -65,7 +65,6 @@ extern u8 sub_8078874(u8);
 extern void sub_8078914();
 extern u8 sub_80AEB1C();
 extern void sub_80E4EF8(int, int, int, int, u16, u8, int);
-extern void sub_800D238();
 extern u8 sub_80789BC();
 extern void sub_80AB2AC(void);
 extern void sub_800D7B8(void);
diff --git a/src/slot_machine.c b/src/slot_machine.c
new file mode 100644
index 000000000..c087bf6b4
--- /dev/null
+++ b/src/slot_machine.c
@@ -0,0 +1,154 @@
+#include "global.h"
+#include "decompress.h"
+#include "palette.h"
+#include "task.h"
+
+struct UnkStruct2000000 {
+    /*0x00*/ u8 filler00[61];
+    /*0x3D*/ u8 unk3D;
+};
+
+struct UnkStruct1 {
+    /*0x00*/ u8 unk00;
+    /*0x01*/ u8 unk01;
+    /*0x02*/ s16 unk02;
+};
+
+extern struct UnkStruct2000000 unk_2000000;
+
+extern struct UnkStruct1 *gUnknown_083ED048[];
+extern const u16 gPalette_83EDE24[];
+
+extern const u8 gSlotMachine_Gfx[];
+#if ENGLISH
+#define SLOTMACHINE_GFX_TILES 233
+#elif GERMAN
+#define SLOTMACHINE_GFX_TILES 236
+#endif
+
+extern const u16 gUnknown_08E95A18[];
+
+extern u16 gUnknown_08E95AB8[];
+extern u16 gUnknown_08E95FB8[];
+
+
+void sub_8104DA4(void);
+
+u8 sub_8105BB4(u8, u8, s16);
+
+static void LoadSlotMachineWheelOverlay(void);
+
+void sub_8104CAC(u8 arg0) {
+    u8 i;
+    struct Task *task;
+
+    sub_8104DA4();
+
+    task = &gTasks[unk_2000000.unk3D];
+    task->data[1] = arg0;
+
+    i = 0;
+    while (gUnknown_083ED048[arg0][i].unk00 != 0xFF)
+    {
+        u8 spriteId;
+        spriteId = sub_8105BB4(
+                gUnknown_083ED048[arg0][i].unk00,
+                gUnknown_083ED048[arg0][i].unk01,
+                gUnknown_083ED048[arg0][i].unk02
+        );
+        task->data[4 + i] = spriteId;
+
+#ifdef GERMAN
+        if (arg0 == 5 && i <= 2)
+        {
+            gSprites[spriteId].invisible = TRUE;
+        }
+#endif
+
+        i += 1;
+    }
+}
+
+asm(".section .text_b");
+
+void sub_8106448(void) {
+    u32 offsetRead, offsetWrite;
+    u32 size;
+
+    sub_800D238(gSlotMachine_Gfx, (void *) 0x02010000);
+
+    offsetRead = 0x02010000;
+    offsetWrite = BG_VRAM;
+    size = SLOTMACHINE_GFX_TILES * 32;
+    while (TRUE)
+    {
+        DmaCopy16(3, offsetRead, (void *) (offsetWrite), 0x1000);
+        offsetRead += 0x1000;
+        offsetWrite += 0x1000;
+        size -= 0x1000;
+        if (size <= 0x1000)
+        {
+            DmaCopy16(3, offsetRead, (void *) (offsetWrite), size);
+            break;
+        }
+    }
+
+    LoadPalette(gUnknown_08E95A18, 0, 160);
+    LoadPalette(gPalette_83EDE24, 208, 32);
+}
+
+void sub_81064B8(void) {
+    CpuCopy16(gUnknown_08E95AB8, (void *) BG_SCREEN_ADDR(29), 20 * 32 * 2);
+    LoadSlotMachineWheelOverlay();
+}
+
+static void LoadSlotMachineWheelOverlay(void) {
+    s16 x, y, dx;
+    u16 *screen;
+
+    screen = (u16 *) BG_SCREEN_ADDR(30);
+
+    for (x = 4; x < 18; x += 5)
+    {
+        for (dx = 0; dx < 4; dx++)
+        {
+            screen[5 * 32 + dx + x] = 0x2051;
+            screen[13 * 32 + dx + x] = 0x2851;
+            screen[6 * 32 + dx + x] = 0x2061;
+            screen[12 * 32 + dx + x] = 0x2861;
+        }
+
+        screen[6 * 32 + x] = 0x20BE;
+        screen[12 * 32 + x] = 0x28BE;
+
+        for (y = 7; y <= 11; y++)
+        {
+            screen[y * 32 + x] = 0x20BF;
+        }
+    }
+}
+
+void sub_81065A8(s16 arg0, u16 arg1, u16 arg2, u16 arg3, u16 arg4) {
+    u16 *vram = (u16 *) BG_SCREEN_ADDR(29);
+
+    vram[15 * 32 + arg0] = arg1;
+    vram[15 * 32 + 1 + arg0] = arg2;
+    vram[16 * 32 + arg0] = arg3;
+    vram[16 * 32 + 1 + arg0] = arg4;
+}
+
+void sub_81065DC(void) {
+    s16 y, x;
+    u16 *screen;
+
+    CpuCopy16(gUnknown_08E95FB8, (void *) BG_SCREEN_ADDR(29), 20 * 32 * 2);
+
+    screen = (u16 *) BG_SCREEN_ADDR(30);
+    for (y = 0; y < 20; y++)
+    {
+        for (x = 0; x < 30; x++)
+        {
+            screen[x + y * 32] = 0;
+        }
+    }
+}