Merge pull request #634 from ketsuban/decompile-ghost

(WIP) Decompile ghost.s

1 files changed, 426 insertions, 0 deletions

diff --git a/src/battle/anim/ghost.c b/src/battle/anim/ghost.c
index fd33d4782..85879c86c 100644
--- a/src/battle/anim/ghost.c
+++ b/src/battle/anim/ghost.c
@@ -1,15 +1,29 @@
 #include "global.h"
+#include "sound.h"
+#include "constants/songs.h"
+#include "trig.h"
 #include "rom_8077ABC.h"
 #include "battle_anim.h"
 
 extern s16 gBattleAnimArgs[];
 extern u8 gAnimBankAttacker;
 extern u8 gAnimBankTarget;
+extern u8 gUnknown_0202F7D2;
 
 void sub_80DDB6C(struct Sprite *sprite);
+void sub_80DDBD8(struct Sprite *);
+void sub_80DDC4C(struct Sprite *);
+void sub_80DDCC8(struct Sprite *);
 void sub_80DDD58(struct Sprite *sprite);
+void sub_80DDD78(struct Sprite *);
+void sub_80DDE7C(u8 taskId);
+void sub_80DDED0(u8 taskId);
 void sub_80DDF40(struct Sprite *sprite);
+void sub_80DDFE8(struct Sprite *);
 void sub_80DE0FC(struct Sprite *sprite);
+void sub_80DE114(struct Sprite *);
+void sub_80DE2DC(u8 taskId);
+void sub_80DE3D4(u8 taskId);
 void sub_80DE7B8(struct Sprite *sprite);
 void sub_80DEF3C(struct Sprite *sprite);
 void sub_80DF0B8(struct Sprite *sprite);
@@ -189,3 +203,415 @@ const struct SpriteTemplate gSpriteTemplate_83DAF98 =
     .affineAnims = gDummySpriteAffineAnimTable,
     .callback = sub_80DF49C,
 };
+
+void sub_80DDB6C(struct Sprite *sprite)
+{
+    InitAnimSpritePos(sprite, 1);
+    sprite->data[0] = gBattleAnimArgs[2];
+    sprite->data[1] = sprite->pos1.x;
+    sprite->data[2] = GetBattlerSpriteCoord(gAnimBankTarget, 2);
+    sprite->data[3] = sprite->pos1.y;
+    sprite->data[4] = GetBattlerSpriteCoord(gAnimBankTarget, 3);
+    sub_8078BD4(sprite);
+    sprite->callback = sub_80DDBD8;
+    sprite->data[6] = 16;
+    REG_BLDCNT = 0x3F40;
+    REG_BLDALPHA = sprite->data[6];
+}
+
+void sub_80DDBD8(struct Sprite *sprite)
+{
+    s16 r0;
+    s16 r2;
+    sub_80DDCC8(sprite);
+    if (TranslateAnimSpriteByDeltas(sprite))
+    {
+        sprite->callback = sub_80DDC4C;
+        return;
+    }
+    sprite->pos2.x += Sin(sprite->data[5], 10);
+    sprite->pos2.y += Cos(sprite->data[5], 15);
+    r2 = sprite->data[5];
+    sprite->data[5] = (sprite->data[5] + 5) & 0xFF;
+    r0 = sprite->data[5];
+    if (r2 != 0 && r2 <= 196)
+        return;
+    if (r0 <= 0)
+        return;
+    PlaySE12WithPanning(SE_W109, gUnknown_0202F7D2);
+}
+
+void sub_80DDC4C(struct Sprite *sprite)
+{
+    s16 r2;
+    s16 r0;
+    sprite->data[0] = 1;
+    TranslateAnimSpriteByDeltas(sprite);
+    sprite->pos2.x += Sin(sprite->data[5],10);
+    sprite->pos2.y += Cos(sprite->data[5],15);
+    
+    r2 = sprite->data[5];
+    sprite->data[5] = (sprite->data[5] + 5) & 0xFF;
+    r0 = sprite->data[5];
+    
+    if(r2 == 0 || r2 > 196)
+        if(r0 > 0)
+            PlaySE(SE_W109);
+    
+    if(sprite->data[6] == 0)
+    {
+        sprite->invisible = TRUE; 
+        sprite->callback = sub_807861C;
+    }
+    else
+        sub_80DDCC8(sprite);
+}
+
+void sub_80DDCC8(struct Sprite *sprite)
+{
+    
+    s16 r0; 
+    if(sprite->data[6] > 0xFF)
+    {
+        if(++sprite->data[6] == 0x10d)
+            sprite->data[6] = 0;
+        return;
+    }
+    
+    r0 = sprite->data[7];
+    sprite->data[7]++;
+    
+    if((r0 & 0xFF) == 0)
+    {
+        sprite->data[7] &= 0xff00;
+        if((sprite->data[7] & 0x100) != 0)
+            sprite->data[6]++;
+        else
+            sprite->data[6]--;
+    }
+    else
+        return;
+    
+    REG_BLDALPHA = BLDALPHA_BLEND(sprite->data[6], 16 - sprite->data[6]);
+    if(sprite->data[6] == 0 || sprite->data[6] == 16)
+        sprite->data[7] ^= 0x100;
+    if(sprite->data[6] == 0)
+        sprite->data[6] = 0x100;
+}
+
+void sub_80DDD58(struct Sprite *sprite)
+{
+    sub_8078764(sprite, 1);
+    sprite->callback = sub_80DDD78;
+    sub_80DDD78(sprite);
+}
+
+void sub_80DDD78(struct Sprite *sprite)
+{
+    u16 temp1;
+    sprite->pos2.x = Sin(sprite->data[0], 32);
+    sprite->pos2.y = Cos(sprite->data[0], 8);
+    temp1 = sprite->data[0] - 65;
+    if (temp1 <= 130)
+        sprite->oam.priority = 2;
+    else
+        sprite->oam.priority = 1;
+    sprite->data[0] = (sprite->data[0] + 19) & 0xFF;
+    sprite->data[2] += 80;
+    sprite->pos2.y += sprite->data[2] >> 8;
+    sprite->data[7] += 1;
+    if (sprite->data[7] == 61)
+        DestroyAnimSprite(sprite);
+}
+
+void sub_80DDDF0(u8 taskId)
+{
+    u8 spriteId;
+    REG_BLDCNT = 0x3F40;
+    REG_BLDALPHA = 0x1000;
+    spriteId = GetAnimBattlerSpriteId(0);
+    sub_8078E70(spriteId, 1);
+    obj_id_set_rotscale(spriteId, 128, 128, 0);
+    gSprites[spriteId].invisible = FALSE;
+    gTasks[taskId].data[0] = 128;
+    gTasks[taskId].data[1] = *gBattleAnimArgs;
+    gTasks[taskId].data[2] = 0;
+    gTasks[taskId].data[3] = 16;
+    gTasks[taskId].func = sub_80DDE7C;
+}
+
+void sub_80DDE7C(u8 taskId)
+{
+    gTasks[taskId].data[10] += 1;
+    if (gTasks[taskId].data[10] == 3)
+    {
+        gTasks[taskId].data[10] = 0;
+        gTasks[taskId].data[2] += 1;
+        gTasks[taskId].data[3] -= 1;
+        REG_BLDALPHA = gTasks[taskId].data[3] << 8 | gTasks[taskId].data[2];
+        if (gTasks[taskId].data[2] != 9)
+            return;
+        gTasks[taskId].func = sub_80DDED0;
+    }
+}
+
+void sub_80DDED0(u8 taskId)
+{
+    u8 spriteId;
+    if (gTasks[taskId].data[1] > 0)
+    {
+        gTasks[taskId].data[1] -= 1;
+        return;
+    }
+    spriteId = GetAnimBattlerSpriteId(0);
+    gTasks[taskId].data[0] += 8;
+    if (gTasks[taskId].data[0] <= 0xFF)
+    {
+        obj_id_set_rotscale(spriteId, gTasks[taskId].data[0], gTasks[taskId].data[0], 0);
+        return;
+    }
+    sub_8078F40(spriteId);
+    DestroyAnimVisualTask(taskId);
+    REG_BLDCNT = 0;
+    REG_BLDALPHA = 0;
+}
+
+void sub_80DDF40(struct Sprite *sprite)
+{
+    u16 r5, r6;
+    r5 = sprite->pos1.x;
+    r6 = sprite->pos1.y;
+    sprite->pos1.x = GetBattlerSpriteCoord(gAnimBankAttacker, 2);
+    sprite->pos1.y = GetBattlerSpriteCoord(gAnimBankAttacker, 3);
+    sprite->data[0] = 0;
+    sprite->data[1] = gBattleAnimArgs[0];
+    sprite->data[2] = gBattleAnimArgs[1];
+    sprite->data[3] = gBattleAnimArgs[2];
+    sprite->data[4] = sprite->pos1.x << 4;
+    sprite->data[5] = sprite->pos1.y << 4;
+    sprite->data[6] = (((s16)r5 - sprite->pos1.x) << 4) / (gBattleAnimArgs[0] << 1);
+    sprite->data[7] = (((s16)r6 - sprite->pos1.y) << 4) / (gBattleAnimArgs[0] << 1);
+    sprite->callback = sub_80DDFE8;
+}
+
+void sub_80DDFE8(struct Sprite *sprite)
+{
+    switch (sprite->data[0])
+    {
+    case 0:
+        sprite->data[4] += sprite->data[6];
+        sprite->data[5] += sprite->data[7];
+        sprite->pos1.x = sprite->data[4] >> 4;
+        sprite->pos1.y = sprite->data[5] >> 4;
+        sprite->data[1] -= 1;
+        if (sprite->data[1] > 0)
+            break;
+        sprite->data[0] += 1;
+        break;
+    case 1:
+        sprite->data[2] -= 1;
+        if (sprite->data[2] > 0)
+            break;
+        sprite->data[1] = GetBattlerSpriteCoord(gAnimBankTarget, 2);
+        sprite->data[2] = GetBattlerSpriteCoord(gAnimBankTarget, 3);
+        sprite->data[4] = sprite->pos1.x << 4;
+        sprite->data[5] = sprite->pos1.y << 4;
+        sprite->data[6] = ((sprite->data[1] - sprite->pos1.x) << 4) / sprite->data[3];
+        sprite->data[7] = ((sprite->data[2] - sprite->pos1.y) << 4) / sprite->data[3];
+        sprite->data[0] += 1;
+        break;
+    case 2:
+        sprite->data[4] += sprite->data[6];
+        sprite->data[5] += sprite->data[7];
+        sprite->pos1.x = sprite->data[4] >> 4;
+        sprite->pos1.y = sprite->data[5] >> 4;
+        sprite->data[3] -= 1;
+        if (sprite->data[3] > 0)
+            break;
+        sprite->pos1.x = GetBattlerSpriteCoord(gAnimBankTarget, 2);
+        sprite->pos1.y = GetBattlerSpriteCoord(gAnimBankTarget, 3);
+        sprite->data[0] += 1;
+        break;
+    case 3:
+        move_anim_8074EE0(sprite);
+        break;
+    }
+}
+
+void sub_80DE0FC(struct Sprite *sprite)
+{
+    sub_8078764(sprite, 1);
+    sprite->callback = sub_80DE114;
+}
+
+/* NONMATCHING */
+NAKED
+void sub_80DE114(struct Sprite *sprite)
+{
+    asm_unified("\tpush {r4-r6,lr}\n"
+                "\tadds r3, r0, 0\n"
+                "\tmovs r5, 0\n"
+                "\tmovs r6, 0\n"
+                "\tadds r0, 0x3F\n"
+                "\tldrb r1, [r0]\n"
+                "\tmovs r0, 0x10\n"
+                "\tands r0, r1\n"
+                "\tcmp r0, 0\n"
+                "\tbeq _080DE1AA\n"
+                "\tadds r1, r3, 0\n"
+                "\tadds r1, 0x3E\n"
+                "\tldrb r2, [r1]\n"
+                "\tmovs r0, 0x4\n"
+                "\tands r0, r2\n"
+                "\tadds r4, r1, 0\n"
+                "\tcmp r0, 0\n"
+                "\tbne _080DE13E\n"
+                "\tmovs r0, 0x4\n"
+                "\torrs r0, r2\n"
+                "\tstrb r0, [r4]\n"
+                "_080DE13E:\n"
+                "\tmovs r1, 0x2E\n"
+                "\tldrsh r0, [r3, r1]\n"
+                "\tcmp r0, 0\n"
+                "\tbeq _080DE14E\n"
+                "\tcmp r0, 0x1\n"
+                "\tbeq _080DE158\n"
+                "\tmovs r6, 0x1\n"
+                "\tb _080DE162\n"
+                "_080DE14E:\n"
+                "\tmovs r1, 0x30\n"
+                "\tldrsh r0, [r3, r1]\n"
+                "\tcmp r0, 0x2\n"
+                "\tbne _080DE162\n"
+                "\tb _080DE166\n"
+                "_080DE158:\n"
+                "\tmovs r1, 0x30\n"
+                "\tldrsh r0, [r3, r1]\n"
+                "\tcmp r0, 0x4\n"
+                "\tbne _080DE162\n"
+                "\tmovs r5, 0x1\n"
+                "_080DE162:\n"
+                "\tcmp r5, 0\n"
+                "\tbeq _080DE198\n"
+                "_080DE166:\n"
+                "\tldrb r2, [r4]\n"
+                "\tlsls r0, r2, 29\n"
+                "\tlsrs r0, 31\n"
+                "\tmovs r1, 0x1\n"
+                "\teors r1, r0\n"
+                "\tlsls r1, 2\n"
+                "\tmovs r0, 0x5\n"
+                "\tnegs r0, r0\n"
+                "\tands r0, r2\n"
+                "\torrs r0, r1\n"
+                "\tstrb r0, [r4]\n"
+                "\tldrh r0, [r3, 0x32]\n"
+                "\tadds r0, 0x1\n"
+                "\tmovs r1, 0\n"
+                "\tstrh r0, [r3, 0x32]\n"
+                "\tstrh r1, [r3, 0x30]\n"
+                "\tlsls r0, 16\n"
+                "\tasrs r0, 16\n"
+                "\tcmp r0, 0x5\n"
+                "\tbne _080DE1AA\n"
+                "\tstrh r1, [r3, 0x32]\n"
+                "\tldrh r0, [r3, 0x2E]\n"
+                "\tadds r0, 0x1\n"
+                "\tstrh r0, [r3, 0x2E]\n"
+                "\tb _080DE1AA\n"
+                "_080DE198:\n"
+                "\tcmp r6, 0\n"
+                "\tbeq _080DE1A4\n"
+                "\tadds r0, r3, 0\n"
+                "\tbl DestroyAnimSprite\n"
+                "\tb _080DE1AA\n"
+                "_080DE1A4:\n"
+                "\tldrh r0, [r3, 0x30]\n"
+                "\tadds r0, 0x1\n"
+                "\tstrh r0, [r3, 0x30]\n"
+                "_080DE1AA:\n"
+                "\tpop {r4-r6}\n"
+                "\tpop {r0}\n"
+                "\tbx r0\n");
+}
+
+void sub_80DE1B0(u8 taskId)
+{
+    struct Task *task;
+    
+    task = &gTasks[taskId];
+    task->data[0] = duplicate_obj_of_side_rel2move_in_transparent_mode(1);
+    if (task->data[0] < 0)
+    {
+        DestroyAnimVisualTask(taskId);
+        return;
+    }
+    task->data[1] = 0;
+    task->data[2] = 15;
+    task->data[3] = 2;
+    task->data[4] = 0;
+    REG_BLDCNT = 0x3F40;
+    REG_BLDALPHA = (task->data[3] << 8) | task->data[2];
+    gSprites[task->data[0]].data[0] = 80;
+    if (GetBattlerSide(gAnimBankTarget) == 0)
+    {
+        gSprites[task->data[0]].data[1] = -144;
+        gSprites[task->data[0]].data[2] = 112;
+    }
+    else
+    {
+        gSprites[task->data[0]].data[1] = 144;
+        gSprites[task->data[0]].data[2] = -112;
+    }
+    gSprites[task->data[0]].data[3] = 0;
+    gSprites[task->data[0]].data[4] = 0;
+    StoreSpriteCallbackInData(&gSprites[task->data[0]], SpriteCallbackDummy);
+    gSprites[task->data[0]].callback = sub_8078394;
+    task->func = sub_80DE2DC;
+}
+
+void sub_80DE2DC(u8 taskId)
+{
+    struct Task *task;
+
+    task = &gTasks[taskId];
+    switch (task->data[4])
+    {
+    case 0:
+        task->data[1] += 1;
+        task->data[5] = task->data[1] & 3;
+        if (task->data[5] == 1)
+            if (task->data[2] > 0)
+                task->data[2] -= 1;
+        if (task->data[5] == 3)
+            if (task->data[3] <= 15)
+                task->data[3] += 1;
+        REG_BLDALPHA = (task->data[3] << 8) | task->data[2];
+        if (task->data[3] != 16 || task->data[2] != 0)
+            break;
+        if (task->data[1] <= 80)
+            break;
+        obj_delete_but_dont_free_vram(&gSprites[task->data[0]]);
+        task->data[4] = 1;
+        break;
+    case 1:
+        if (++task->data[6] <= 1)
+            break;
+        REG_BLDCNT = 0;
+        REG_BLDALPHA = 0;
+        task->data[4] += 1;
+        break;
+    case 2:
+        DestroyAnimVisualTask(taskId);
+    }
+}
+
+void sub_80DE3AC(u8 taskId)
+{
+    struct Task *task;
+
+    task = &gTasks[taskId];
+    task->data[15] = 0;
+    task->func = sub_80DE3D4;
+    sub_80DE3D4(taskId);
+}