Merge pull request #247 from PikalaxALT/smokescreen

Port smokescreen.c from emerald

1 files changed, 73 insertions, 0 deletions

diff --git a/src/smokescreen.c b/src/smokescreen.c
new file mode 100644
index 000000000..2f269737e
--- /dev/null
+++ b/src/smokescreen.c
@@ -0,0 +1,73 @@
+#include "global.h"
+#include "decompress.h"
+#include "util.h"
+
+static void SmokescreenImpact_Callback(struct Sprite * sprite);
+
+extern const struct CompressedSpriteSheet gSmokescreenImpactSpriteSheet;
+extern const struct CompressedSpritePalette gSmokescreenImpactSpritePalette;
+extern const struct SpriteTemplate gSmokescreenImpactSpriteTemplate;
+
+u8 SmokescreenImpact(s16 x, s16 y, u8 a3)
+{
+    u8 mainSpriteId;
+    u8 spriteId1, spriteId2, spriteId3, spriteId4;
+    struct Sprite *mainSprite;
+
+    if (GetSpriteTileStartByTag(gSmokescreenImpactSpriteSheet.tag) == 0xFFFF)
+    {
+        LoadCompressedSpriteSheetUsingHeap(&gSmokescreenImpactSpriteSheet);
+        LoadCompressedSpritePaletteUsingHeap(&gSmokescreenImpactSpritePalette);
+    }
+
+    mainSpriteId = CreateInvisibleSpriteWithCallback(SmokescreenImpact_Callback);
+    mainSprite = &gSprites[mainSpriteId];
+    mainSprite->data[1] = a3;
+
+    spriteId1 = CreateSprite(&gSmokescreenImpactSpriteTemplate, x - 16, y - 16, 2);
+    gSprites[spriteId1].data[0] = mainSpriteId;
+    mainSprite->data[0]++;
+    AnimateSprite(&gSprites[spriteId1]);
+
+    spriteId2 = CreateSprite(&gSmokescreenImpactSpriteTemplate, x, y - 16, 2);
+    gSprites[spriteId2].data[0] = mainSpriteId;
+    mainSprite->data[0]++;
+    StartSpriteAnim(&gSprites[spriteId2], 1);
+    AnimateSprite(&gSprites[spriteId2]);
+
+    spriteId3 = CreateSprite(&gSmokescreenImpactSpriteTemplate, x - 16, y, 2);
+    gSprites[spriteId3].data[0] = mainSpriteId;
+    mainSprite->data[0]++;
+    StartSpriteAnim(&gSprites[spriteId3], 2);
+    AnimateSprite(&gSprites[spriteId3]);
+
+    spriteId4 = CreateSprite(&gSmokescreenImpactSpriteTemplate, x, y, 2);
+    gSprites[spriteId4].data[0] = mainSpriteId;
+    mainSprite->data[0]++;
+    StartSpriteAnim(&gSprites[spriteId4], 3);
+    AnimateSprite(&gSprites[spriteId4]);
+
+    return mainSpriteId;
+}
+
+static void SmokescreenImpact_Callback(struct Sprite *sprite)
+{
+    if (!sprite->data[0])
+    {
+        FreeSpriteTilesByTag(gSmokescreenImpactSpriteSheet.tag);
+        FreeSpritePaletteByTag(gSmokescreenImpactSpritePalette.tag);
+        if (!sprite->data[1])
+            DestroySprite(sprite);
+        else
+            sprite->callback = SpriteCallbackDummy;
+    }
+}
+
+void SpriteCB_DestroySprite(struct Sprite *sprite)
+{
+    if (sprite->animEnded)
+    {
+        gSprites[sprite->data[0]].data[0]--;
+        DestroySprite(sprite);
+    }
+}