Decompile tt_003 func_us_80172EF8 (#1969)

PSX: https://decomp.me/scratch/LWQl4
PSP: https://decomp.me/scratch/IPtWt

src/servant/tt_003/demon.c

@@ -224,7 +224,92 @@ void func_us_80172DC4(Entity* self) {
 
 void DestroyEntityPassthrough(Entity* self) { DestroyEntity(self); }
 
-INCLUDE_ASM("servant/tt_003/nonmatchings/demon", func_us_80172EF8);
+extern u32 D_us_80171B74[][4];
+
+void func_us_80172EF8(Entity* self) {
+    Primitive* prim;
+    s32 posX, posY;
+
+    self->posX.val = self->ext.et_801737F0.parent->posX.val;
+    self->posY.val = self->ext.et_801737F0.parent->posY.val;
+    switch (self->step) {
+    case 0:
+        self->primIndex = g_api.AllocPrimitives(PRIM_GT4, 2);
+        if (self->primIndex == -1) {
+            DestroyEntity(self);
+            return;
+        }
+        self->flags = FLAG_KEEP_ALIVE_OFFCAMERA | FLAG_HAS_PRIMS;
+        prim = &g_PrimBuf[self->primIndex];
+        prim->tpage = 0x1A;
+        prim->clut = 0x143;
+        prim->priority = self->zPriority + 1;
+        prim->drawMode = DRAW_TPAGE2 | DRAW_TPAGE | DRAW_COLORS | DRAW_TRANSP;
+        PCOL(prim) = 0xC0;
+
+        prim = prim->next;
+        prim->tpage = 0x1A;
+        prim->clut = 0x143;
+        prim->priority = self->zPriority + 1;
+        prim->drawMode =
+            DRAW_UNK_400 | DRAW_TPAGE2 | DRAW_TPAGE | DRAW_COLORS | DRAW_TRANSP;
+        prim->u0 = prim->u2 = 0;
+        prim->u1 = prim->u3 = 0x3F;
+        prim->v0 = prim->v1 = 0xC0;
+        prim->v2 = prim->v3 = 0xFF;
+
+        self->ext.et_801737F0.animationTriggerCount = 0;
+        self->ext.et_801737F0.animationTimer = 0;
+        self->step++;
+        break;
+    case 1:
+        self->ext.et_801737F0.animationTriggerCount++;
+        self->ext.et_801737F0.animationTriggerCount &= 7;
+        self->ext.et_801737F0.animationTimer += 8;
+        if (self->ext.et_801737F0.animationTimer >= 0x100) {
+            self->step++;
+        }
+        self->ext.et_801737F0.stepCounter++;
+        break;
+    case 2:
+        self->ext.et_801737F0.animationTriggerCount++;
+        self->ext.et_801737F0.animationTriggerCount &= 7;
+        self->ext.et_801737F0.stepCounter++;
+        if (self->ext.et_801737F0.stepCounter > 50) {
+            CreateEventEntity(self, 0xDB, 0);
+            DestroyEntity(self);
+            return;
+        }
+        break;
+    }
+    posX = self->posX.i.hi + (self->facingLeft ? 6 : -6);
+    posY = self->posY.i.hi - 0xC;
+    prim = &g_PrimBuf[self->primIndex];
+
+    prim->u0 = prim->u1 =
+        D_us_80171B74[self->ext.et_801737F0.animationTriggerCount][0];
+    prim->u2 = prim->u3 =
+        D_us_80171B74[self->ext.et_801737F0.animationTriggerCount][1];
+    prim->v0 = prim->v2 =
+        D_us_80171B74[self->ext.et_801737F0.animationTriggerCount][2];
+    prim->v1 = prim->v3 =
+        D_us_80171B74[self->ext.et_801737F0.animationTriggerCount][3];
+    prim->x0 = prim->x2 = posX - self->ext.et_801737F0.animationTimer * 8 / 256;
+    prim->x1 = prim->x3 = posX + self->ext.et_801737F0.animationTimer * 8 / 256;
+    prim->y0 = prim->y1 =
+        posY - self->ext.et_801737F0.animationTimer * 32 / 256;
+    prim->y2 = prim->y3 = posY;
+    prim = prim->next;
+    PCOL(prim) = self->ext.et_801737F0.animationTimer / 2;
+    prim->x0 = prim->x2 =
+        posX - (0x100 - self->ext.et_801737F0.animationTimer) * 32 / 256;
+    prim->x1 = prim->x3 =
+        posX + (0x100 - self->ext.et_801737F0.animationTimer) * 32 / 256;
+    prim->y0 = prim->y1 =
+        posY - (0x100 - self->ext.et_801737F0.animationTimer) * 32 / 256;
+    prim->y2 = prim->y3 =
+        posY + (0x100 - self->ext.et_801737F0.animationTimer) * 32 / 256;
+}
 
 INCLUDE_ASM("servant/tt_003/nonmatchings/demon", func_us_80173348);