Through stage 4

android/assets/images/game.atlas

@@ -0,0 +1,20 @@
+
+game.png
+size: 256,128
+format: RGBA8888
+filter: Nearest,Nearest
+repeat: none
+bucket
+  rotate: false
+  xy: 2, 2
+  size: 64, 64
+  orig: 64, 64
+  offset: 0, 0
+  index: -1
+drop
+  rotate: false
+  xy: 70, 2
+  size: 64, 64
+  orig: 64, 64
+  offset: 0, 0
+  index: -1

build.gradle

@@ -104,7 +104,9 @@ project(":core") {
         api "com.badlogicgames.ashley:ashley:$ashleyVersion"
         api "org.jetbrains.kotlin:kotlin-stdlib:$kotlinVersion"
         api "io.github.libktx:ktx-app:$ktxVersion"
+        api "io.github.libktx:ktx-assets:$ktxVersion"
         api "io.github.libktx:ktx-collections:$ktxVersion"
         api "io.github.libktx:ktx-graphics:$ktxVersion"
+        api "io.github.libktx:ktx-log:$ktxVersion"
     }
 }

core/src/me/msoucy/ptures/EAssets.kt

@@ -0,0 +1,32 @@
+package me.msoucy.ptures
+
+import com.badlogic.gdx.assets.AssetManager
+import com.badlogic.gdx.audio.Music
+import com.badlogic.gdx.audio.Sound
+import com.badlogic.gdx.graphics.g2d.TextureAtlas
+import ktx.assets.getAsset
+import ktx.assets.load
+
+// sounds
+enum class SoundAssets(val path: String) {
+    Drop("sounds/drop.wav")
+}
+
+inline fun AssetManager.load(asset: SoundAssets) = load<Sound>(asset.path)
+inline operator fun AssetManager.get(asset: SoundAssets) = getAsset<Sound>(asset.path)
+
+// music
+enum class MusicAssets(val path: String) {
+    Rain("music/rain.mp3")
+}
+
+inline fun AssetManager.load(asset: MusicAssets) = load<Music>(asset.path)
+inline operator fun AssetManager.get(asset: MusicAssets) = getAsset<Music>(asset.path)
+
+// texture atlas
+enum class TextureAtlasAssets(val path: String) {
+    Game("images/game.atlas")
+}
+
+inline fun AssetManager.load(asset: TextureAtlasAssets) = load<TextureAtlas>(asset.path)
+inline operator fun AssetManager.get(asset: TextureAtlasAssets) = getAsset<TextureAtlas>(asset.path)

core/src/me/msoucy/ptures/PTures.kt

@@ -1,25 +1,27 @@
 package me.msoucy.ptures
 
+import com.badlogic.gdx.assets.AssetManager
 import com.badlogic.gdx.graphics.g2d.BitmapFont
 import com.badlogic.gdx.graphics.g2d.SpriteBatch
 import ktx.app.KtxGame
 import ktx.app.KtxScreen
-import me.msoucy.ptures.screens.MainMenuScreen
+import me.msoucy.ptures.screens.LoadingScreen
 
 class PTures : KtxGame<KtxScreen>() {
     val batch by lazy { SpriteBatch() }
-    // use LibGDX's default Arial font
     val font by lazy { BitmapFont() }
+    val assets = AssetManager()
 
     override fun create() {
-        addScreen(MainMenuScreen(this))
-        setScreen<MainMenuScreen>()
+        addScreen(LoadingScreen(this))
+        setScreen<LoadingScreen>()
         super.create()
     }
 
     override fun dispose() {
         batch.dispose()
         font.dispose()
+        assets.dispose()
         super.dispose()
     }
 }

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

@@ -3,7 +3,6 @@ package me.msoucy.ptures.screens
 import com.badlogic.gdx.Gdx
 import com.badlogic.gdx.Input
 import com.badlogic.gdx.graphics.OrthographicCamera
-import com.badlogic.gdx.graphics.Texture
 import com.badlogic.gdx.math.MathUtils
 import com.badlogic.gdx.math.Rectangle
 import com.badlogic.gdx.math.Vector3
@@ -12,14 +11,18 @@ import com.badlogic.gdx.utils.TimeUtils
 import ktx.app.KtxScreen
 import ktx.collections.iterate
 import ktx.graphics.use
-import me.msoucy.ptures.PTures
+import ktx.log.logger
+import me.msoucy.ptures.*
+
+private val log = logger<GameScreen>()
 
 class GameScreen(val game: PTures) : KtxScreen {
 
-    private val dropImage = Texture(Gdx.files.internal("images/drop.png"))
-    private val bucketImage = Texture(Gdx.files.internal("images/bucket.png"))
-    private val dropSound = Gdx.audio.newSound(Gdx.files.internal("sounds/drop.wav"))
-    private val rainMusic = Gdx.audio.newMusic(Gdx.files.internal("music/rain.mp3")).apply { isLooping = true }
+    private val dropImage = game.assets[TextureAtlasAssets.Game].findRegion("drop")
+    private val bucketImage = game.assets[TextureAtlasAssets.Game].findRegion("bucket")
+    private val dropSound = game.assets[SoundAssets.Drop]
+    private val rainMusic = game.assets[MusicAssets.Rain].apply { isLooping = true }
+
     // The camera ensures we can render using our target resolution of 800x480
     //    pixels no matter what the screen resolution is.
     private val camera = OrthographicCamera().apply { setToOrtho(false, 800f, 480f) }
@@ -75,8 +78,10 @@ class GameScreen(val game: PTures) : KtxScreen {
         //    effect also
         raindrops.iterate { raindrop, iterator ->
             raindrop.y -= 200 * delta
-            if (raindrop.y + 64 < 0)
+            if (raindrop.y + 64 < 0) {
                 iterator.remove()
+                log.debug { "Missed a raindrop!" }
+            }
 
             if (raindrop.overlaps(bucket)) {
                 dropsGathered++
@@ -91,11 +96,4 @@ class GameScreen(val game: PTures) : KtxScreen {
         rainMusic.play()
         spawnRaindrop()
     }
-
-    override fun dispose() {
-        dropImage.dispose()
-        bucketImage.dispose()
-        dropSound.dispose()
-        rainMusic.dispose()
-    }
 }

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

@@ -0,0 +1,43 @@
+package me.msoucy.ptures.screens
+
+import com.badlogic.gdx.Gdx
+import com.badlogic.gdx.graphics.OrthographicCamera
+import ktx.app.KtxScreen
+import ktx.graphics.use
+import me.msoucy.ptures.*
+
+class LoadingScreen(val game: PTures) : KtxScreen {
+    private val camera = OrthographicCamera().apply {
+        setToOrtho(false, 800f, 480f)
+    }
+
+    override fun render(delta: Float) {
+        // Continue loading assets
+        game.assets.update()
+
+        camera.update()
+        game.batch.projectionMatrix = camera.combined
+
+        game.batch.use {
+            game.font.draw(it, "Welcome to Drop!!! ", 100f, 150f)
+            if (game.assets.isFinished) {
+                game.font.draw(it, "Tap anywhere to begin!", 100f, 100f)
+            } else {
+                game.font.draw(it, "Loading assets...", 100f, 100f)
+            }
+        }
+
+        if (Gdx.input.isTouched && game.assets.isFinished) {
+            game.addScreen(GameScreen(game))
+            game.setScreen<GameScreen>()
+            game.removeScreen<LoadingScreen>()
+            dispose()
+        }
+    }
+
+    override fun show() {
+        MusicAssets.values().forEach { game.assets.load(it) }
+        SoundAssets.values().forEach { game.assets.load(it) }
+        TextureAtlasAssets.values().forEach { game.assets.load(it) }
+    }
+}

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

@@ -1,30 +0,0 @@
-package me.msoucy.ptures.screens
-
-import com.badlogic.gdx.Gdx
-import com.badlogic.gdx.graphics.OrthographicCamera
-import ktx.app.KtxScreen
-import ktx.graphics.use
-import me.msoucy.ptures.PTures
-
-class MainMenuScreen(val game: PTures) : KtxScreen {
-    private val camera = OrthographicCamera().apply {
-        setToOrtho(false, 800f, 480f)
-    }
-
-    override fun render(delta: Float) {
-        camera.update()
-        game.batch.projectionMatrix = camera.combined
-
-        game.batch.use {
-            game.font.draw(it, "Welcome to Drop!!! ", 100f, 150f)
-            game.font.draw(it, "Tap anywhere to begin!", 100f, 100f)
-        }
-
-        if (Gdx.input.isTouched) {
-            game.addScreen(GameScreen(game))
-            game.setScreen<GameScreen>()
-            game.removeScreen<MainMenuScreen>()
-            dispose()
-        }
-    }
-}

desktop/src/me/msoucy/ptures/desktop/DesktopLauncher.kt

@@ -1,5 +1,6 @@
 package me.msoucy.ptures.desktop
 
+import com.badlogic.gdx.Application
 import com.badlogic.gdx.backends.lwjgl.LwjglApplication
 import com.badlogic.gdx.backends.lwjgl.LwjglApplicationConfiguration
 import me.msoucy.ptures.PTures
@@ -7,7 +8,11 @@ import me.msoucy.ptures.PTures
 object DesktopLauncher {
     @JvmStatic
     fun main(arg: Array<String>) {
-        val config = LwjglApplicationConfiguration()
-        LwjglApplication(PTures(), config)
+        val config = LwjglApplicationConfiguration().apply {
+            title = "Drop"
+            width = 800
+            height = 480
+        }
+        LwjglApplication(PTures(), config).logLevel = Application.LOG_DEBUG
     }
 }