add transitionToStage

Author: mikebarkmin

CHANGELOG.md

@@ -4,6 +4,18 @@ index: 4
 lang: en
 ---
 
+## 4.19.0
+
+- 🚀 Feat: Add transitionToStage method to Window class.
+
+You can now use the transitionToStage method for a smoothing transition between the current and the new stage.
+
+```java
+window.transitionToStage(new MyStage(), 500);
+```
+
+The DonutIO example shows the usage of the transitionToStage method.
+
 ## 4.18.1
 
 - 🐛 Fix: isTouchingSprite not working correctly, when the sprite is resized.

examples/java/DonutIO/Game.java

@@ -14,7 +14,7 @@ public Game() {
   }
 
   public static void main(String[] args) {
-    Text.FONT_SIZES = new int[] {32, 48};
+    Text.FONT_SIZES = new int[] { 32, 48 };
     new Game();
   }
 }

examples/java/DonutIO/GameOverStage.java

@@ -30,7 +30,7 @@ public void whenKeyPressed(int keyCode) {
     System.out.println(keyCode);
     if (keyCode == KeyCode.VK_SPACE) {
       Game.LEVEL = 0;
-      Window.getInstance().setStage(new WorldStage());
+      Window.getInstance().transitionToStage(new WorldStage(), 500);
     }
   }
 }

examples/java/DonutIO/StartStage.java

@@ -37,7 +37,7 @@ public StartStage() {
   public void whenKeyPressed(int keyCode) {
     if (keyCode == KeyCode.VK_SPACE) {
       Game.LEVEL = 0;
-      Window.getInstance().setStage(new WorldStage());
+      Window.getInstance().transitionToStage(new WorldStage(), 500);
     }
   }
 }

examples/java/DonutIO/WinStage.java

@@ -29,7 +29,7 @@ public WinStage() {
   public void whenKeyPressed(int keyCode) {
     if (keyCode == KeyCode.VK_SPACE) {
       Game.LEVEL += 1;
-      Window.getInstance().setStage(new WorldStage());
+      Window.getInstance().transitionToStage(new WorldStage(), 500);
     }
   }
 }

examples/java/DonutIO/WorldStage.java

@@ -53,11 +53,13 @@ public void run() {
     }
 
     if (this.count(FollowDonut.class) == 0) {
-      Window.getInstance().setStage(new WinStage());
+      Window.getInstance().transitionToStage(new WinStage(), 500);
+      return;
     }
 
     if (this.count(PlayerDonut.class) == 0) {
-      Window.getInstance().setStage(new GameOverStage());
+      Window.getInstance().transitionToStage(new GameOverStage(), 500);
+      return;
     }
 
     if (this.isKeyPressed(KeyCode.VK_1)) {

resources/build.properties

@@ -40,7 +40,7 @@ author.url=https://openpatch.org
 # This is NOT a direct link to where to download it.
 
 library.url=https://github.com/openpatch/scratch-for-java
-library.version=4.18.1
+library.version=4.19.0
 
 
 # Set the category (or categories) of your Library from the following list: