spark animation

vacation.p8

@@ -1297,7 +1297,7 @@ end
 -- 1: black (for sprites)
 -- 2: dolphin shading
 -- 3: azure water, maybe score display? (140)
--- 4, 5: unassigned, layer-specific
+-- 4, 5: keep default in sky layer (for emergency awakener)
 -- 6: dolphin specular highlights
 -- 7: dolphin white paint
 -- 8, 9: unassigned, layer specific
@@ -1370,6 +1370,24 @@ function sea:draw()
  rectfill(0, 125+(w>>3), 128, 128, 0x1001)
 end
 
+spark = {
+ x=0,
+ y=0,
+ dx=0,
+ dy=0,
+ f=-1,
+}
+mknew(spark)
+function spark:update()
+ self.f += 1
+ if (self.f >= 12) return true
+ self.x += self.dx
+ self.y += self.dy
+end
+function spark:draw()
+ spr(48+self.f\2, self.x, self.y)
+end
+
 arcade_level = {
  score=0,
  max_score=999,
@@ -1455,7 +1473,8 @@ end
 function arcade_level:word_hit(word)
  self.score += 1
  -- TODO: sfx
- -- TODO: sparkle
+ self.bg:push_back(spark.new{x=word.x-1, y=word.y-1, dx=-2})
+ self.bg:push_back(spark.new{x=word.x+word.w, y=word.y-1, dx=1})
 end
 
 function arcade_level:draw()