Through stage 5

core/src/me/msoucy/ptures/screens/GameScreen.kt

@@ -9,6 +9,8 @@ import com.badlogic.gdx.math.Vector3
 import com.badlogic.gdx.utils.Array
 import com.badlogic.gdx.utils.TimeUtils
 import ktx.app.KtxScreen
+import ktx.assets.pool
+import ktx.assets.invoke
 import ktx.collections.iterate
 import ktx.graphics.use
 import ktx.log.logger
@@ -28,12 +30,13 @@ class GameScreen(val game: PTures) : KtxScreen {
     private val camera = OrthographicCamera().apply { setToOrtho(false, 800f, 480f) }
     private val bucket = Rectangle(800f / 2f - 64f / 2f, 20f, 64f, 64f)
     private val touchPos = Vector3()
-    private val raindrops = Array<Rectangle>() // gdx, not Kotlin Array
+    private val raindropsPool = pool { Rectangle() }
+    private val activeRaindrops = Array<Rectangle>() // gdx, not Kotlin Array
     private var lastDropTime = 0L
     private var dropsGathered = 0
 
     private fun spawnRaindrop() {
-        raindrops.add(Rectangle(MathUtils.random(0f, 800f - 64f), 480f, 64f, 64f))
+        activeRaindrops.add(raindropsPool().set(MathUtils.random(0f, 800f - 64f), 480f, 64f, 64f))
         lastDropTime = TimeUtils.nanoTime()
     }
 
@@ -48,7 +51,7 @@ class GameScreen(val game: PTures) : KtxScreen {
         game.batch.use { batch ->
             game.font.draw(batch, "Drops Collected: " + dropsGathered, 0f, 480f)
             batch.draw(bucketImage, bucket.x, bucket.y, bucket.width, bucket.height)
-            raindrops.forEach { r -> batch.draw(dropImage, r.x, r.y) }
+            activeRaindrops.forEach { r -> batch.draw(dropImage, r.x, r.y) }
         }
 
         // process user input
@@ -76,17 +79,20 @@ class GameScreen(val game: PTures) : KtxScreen {
         // move the raindrops, remove any that are beneath the bottom edge of the
         //    screen or that hit the bucket.  In the latter case, play back a sound
         //    effect also
-        raindrops.iterate { raindrop, iterator ->
+        activeRaindrops.iterate { raindrop, iterator ->
             raindrop.y -= 200 * delta
             if (raindrop.y + 64 < 0) {
                 iterator.remove()
-                log.debug { "Missed a raindrop!" }
+                raindropsPool(raindrop)
+                log.debug { "Missed a raindrop! Pool free objects: ${raindropsPool.free}" }
             }
 
             if (raindrop.overlaps(bucket)) {
                 dropsGathered++
                 dropSound.play()
                 iterator.remove()
+                raindropsPool(raindrop)
+                log.debug { "Pool free objects: ${raindropsPool.free}" }
             }
         }
     }