1 files changed, 205 insertions, 0 deletions
diff --git a/src/battle/anim/heated_rock.c b/src/battle/anim/heated_rock.c
new file mode 100644
index 000000000..1d59669cf
--- /dev/null
+++ b/src/battle/anim/heated_rock.c
@@ -0,0 +1,205 @@
+#include "global.h"
+#include "battle_anim.h"
+#include "rom_8077ABC.h"
+
+extern s16 gBattleAnimArgs[8];
+extern u8 gBattleAnimBankAttacker;
+extern u8 gBattleAnimBankTarget;
+extern u16 gBattleTypeFlags;
+
+void sub_80D59B0(struct Sprite *);
+static void sub_80D5A74(struct Sprite *);
+
+// heated_rock (moves heated rock sprites)
+// Used in Eruption.
+
+void sub_80D58FC(struct Sprite *sprite)
+{
+    sub_80D59B0(sprite);
+
+    if (sprite->invisible)
+    {
+        gTasks[sprite->data[6]].data[sprite->data[7]]--;
+        DestroySprite(sprite);
+    }
+}
+
+u16 sub_80D5940(u8 spriteId)
+{
+    u16 var1 = gSprites[spriteId].pos1.y + gSprites[spriteId].pos2.y + gSprites[spriteId].centerToCornerVecY;
+
+    if (GetBankSide(gBattleAnimBankAttacker) == 0)
+    {
+        var1 = ((var1 << 16) + 0x4A0000) >> 16;
+    }
+    else
+    {
+        var1 = ((var1 << 16) + 0x2C0000) >> 16;
+    }
+
+    return var1;
+}
+
+void sub_80D5994(struct Sprite *sprite, s16 x, s16 y)
+{
+    sprite->data[0] = 0;
+    sprite->data[1] = 0;
+    sprite->data[2] = (u16)sprite->pos1.x * 8;
+    sprite->data[3] = (u16)sprite->pos1.y * 8;
+    sprite->data[4] = x * 8;
+    sprite->data[5] = y * 8;
+}
+
+#ifdef NONMATCHING
+void sub_80D59B0(struct Sprite *sprite)
+{
+    int var1;
+    int var2;
+
+    if (++sprite->data[0] > 2)
+    {
+        sprite->data[0] = 0;
+        ++sprite->data[1];
+        sprite->data[3] += ((u16)sprite->data[1] * (u16)sprite->data[1]);
+    }
+
+    var1 = (u16)sprite->data[4] + (u16)sprite->data[2];
+    sprite->data[2] = var1;
+    var1 = (s16)var1 >> 3;
+    sprite->pos1.x = var1;
+
+    var2 = (u16)sprite->data[5] + (u16)sprite->data[3];
+    sprite->data[3] = var2;
+    var2 = (s16)var2 >> 3;
+    sprite->pos1.y = var2;
+
+    if ((u32)((var1 + 8) << 16) > 0x1000000 || var2 < -8 || var2 > 120)
+    {
+        sprite->invisible = 1;
+    }
+}
+#else
+__attribute__((naked))
+void sub_80D59B0(struct Sprite *sprite)
+{
+    asm(".syntax unified\n\
+    push {lr}\n\
+    adds r2, r0, 0\n\
+    ldrh r0, [r2, 0x2E]\n\
+    adds r0, 0x1\n\
+    strh r0, [r2, 0x2E]\n\
+    lsls r0, 16\n\
+    asrs r0, 16\n\
+    cmp r0, 0x2\n\
+    ble _080D59DA\n\
+    movs r0, 0\n\
+    strh r0, [r2, 0x2E]\n\
+    ldrh r0, [r2, 0x30]\n\
+    adds r0, 0x1\n\
+    strh r0, [r2, 0x30]\n\
+    ldrh r0, [r2, 0x30]\n\
+    adds r1, r0, 0\n\
+    muls r1, r0\n\
+    adds r0, r1, 0\n\
+    ldrh r3, [r2, 0x34]\n\
+    adds r0, r3\n\
+    strh r0, [r2, 0x34]\n\
+_080D59DA:\n\
+    ldrh r0, [r2, 0x36]\n\
+    ldrh r1, [r2, 0x32]\n\
+    adds r0, r1\n\
+    strh r0, [r2, 0x32]\n\
+    lsls r0, 16\n\
+    asrs r0, 19\n\
+    strh r0, [r2, 0x20]\n\
+    ldrh r1, [r2, 0x38]\n\
+    ldrh r3, [r2, 0x34]\n\
+    adds r1, r3\n\
+    strh r1, [r2, 0x34]\n\
+    lsls r1, 16\n\
+    asrs r3, r1, 19\n\
+    strh r3, [r2, 0x22]\n\
+    adds r0, 0x8\n\
+    lsls r0, 16\n\
+    movs r1, 0x80\n\
+    lsls r1, 17\n\
+    cmp r0, r1\n\
+    bhi _080D5A10\n\
+    adds r1, r3, 0\n\
+    movs r0, 0x8\n\
+    negs r0, r0\n\
+    cmp r1, r0\n\
+    blt _080D5A10\n\
+    cmp r1, 0x78\n\
+    ble _080D5A1C\n\
+_080D5A10:\n\
+    adds r0, r2, 0\n\
+    adds r0, 0x3E\n\
+    ldrb r1, [r0]\n\
+    movs r2, 0x4\n\
+    orrs r1, r2\n\
+    strb r1, [r0]\n\
+_080D5A1C:\n\
+    pop {r0}\n\
+    bx r0\n\
+    .syntax divided\n");
+}
+#endif // NONMATCHING
+
+void sub_80D5A20(struct Sprite *sprite)
+{
+    sprite->pos1.x = gBattleAnimArgs[0];
+    sprite->pos1.y = gBattleAnimArgs[1];
+
+    sprite->data[0] = 0;
+    sprite->data[1] = 0;
+    sprite->data[2] = 0;
+    sprite->data[6] = gBattleAnimArgs[2];
+    sprite->data[7] = gBattleAnimArgs[3];
+
+    sprite->oam.tileNum += gBattleAnimArgs[4] * 16;
+    sprite->callback = sub_80D5A74;
+}
+
+static void sub_80D5A74(struct Sprite *sprite)
+{
+    switch (sprite->data[0])
+    {
+    case 0:
+        if (sprite->data[6] != 0)
+        {
+            sprite->data[6]--;
+            return;
+        }
+
+        sprite->data[0]++;
+        // fall through
+    case 1:
+        sprite->pos1.y += 8;
+        if (sprite->pos1.y >= sprite->data[7])
+        {
+            sprite->pos1.y = sprite->data[7];
+            sprite->data[0]++;
+        }
+        break;
+    case 2:
+        if (++sprite->data[1] > 1)
+        {
+            sprite->data[1] = 0;
+            if ((++sprite->data[2] & 1) != 0)
+            {
+                sprite->pos2.y = -3;
+            }
+            else
+            {
+                sprite->pos2.y = 3;
+            }
+        }
+
+        if (++sprite->data[3] > 16)
+        {
+            move_anim_8072740(sprite);
+        }
+        break;
+    }
+}