Unterschiede

Hier werden die Unterschiede zwischen zwei Versionen angezeigt.

--- hunter:hunterfertig:start [2023/02/03 06:56] – angelegt Martin Pabst
+++ hunter:hunterfertig:start [2023/05/26 07:02] (aktuell) – Martin Pabst
@@ Zeile 2: / Zeile 2: @@
 <HTML>
-<div class="java-online" style="height: 400px; width: 80%" data-java-online="{'withBottomPanel': true, 'id': 'hunter'}">
+<div class="java-online" style="height: 400px; width: 100%" data-java-online="{'withBottomPanel': true, 'id': 'hunter'}">
-<script type="text/plain" title="Hunter.java">
+<script type="text/plain" title="Main.java">
+// Main Program:
+SystemTools.setSpeed(-1);  // maximum execution speed
 new HunterGame();
+/**
+ * Class Main manages huter, target and enemies
+ * and maintains program state.
+ * States: "startscreen", "game running", "game over"
+ */
 class HunterGame extends Actor {
+   Hunter hunter;
+   Target target;
+   Group boulders;
-   Circle hunter;
+   String state;     // allowed values: "startscreen", "game running", "game over"
-   double vx = 4;
-   double vy = 0;
-   double v = 4;
+   Text scoreText;   // displays score
+   int score = 0;
-   Circle target;
+   Text caption;     // displays big caption: "Hunter Game" or "Game Over"
+   int timeSpacePressed = 0;  // time since space key has been pressed in milliseconds
-   int punkte = 0;
+   HunterGame() {
+      hunter = new Hunter(this);
+      boulders = new Group();     // holds all enemies
-   Group enemies = new Group();
+      scoreText = new Text(40, 40, 70, "0");
+      scoreText.setFillColor(Color.bisque);
+      scoreText.setBorderColor(Color.cadetblue);
+      caption = new Text(400, 200, 80, "Hunter Game");
+      caption.setFillColor(Color.bisque);
+      caption.setBorderColor(Color.darkcyan);
-   HunterGame() {
+      caption.setAlignment(Alignment.center);
-      super();
+      setState("startscreen");   // start game
-      hunter = new Circle(400, 300, 5);
-      target = new Circle(0, 0, 5);
-      target.setFillColor(Color.green);
-      moveTarget();
    }
+   void makeNewTarget() {
+      target = new Target(this);
+   }
+   /**
+    * this method is called 30 times per second
+    */
    public void act() {
+      if(state == "game running") {
+         // did hunter catch target?
+         if(hunter.collidesWith(target)) {
+            target.destroy();
+            makeNewTarget();
+            score++;
+            scoreText.setText(score);
+         }
+         // add boulder with probability of 1/100
+         if(Math.random() < 0.01) {
+            addBoulder();
+         }
+         if(hunter.isOutsideView() || hunter.collidesWith(boulders)) {
+            setState("game over");
+         }
+      }
+      // if space key is pressed consider changing state...
+      if(isKeyDown(" ") && System.currentTimeMillis() - timeSpacePressed > 300) {
+         timeSpacePressed = System.currentTimeMillis();
+         switch(state) {
+            case "startscreen" :
+               setState("game running");
+               break;
+            case "game over" :
+               setState("startscreen");
+               break;
+            default :
+         }
+      }
+   }
+   void addBoulder() {
+      boulders.add(new Boulder(this));
+   }
+   void setState(String newState) {
+      switch(newState) {
+         case "startscreen" :
+            caption.setVisible(true);
+            scoreText.setVisible(false);
+            caption.setText("Hunter Game");
+            hunter.setVisible(false);
+            hunter.moveTo(400, 300);
+            break;
+         case "game running" :
+            caption.setVisible(false);
+            hunter.setVisible(true);
+            scoreText.setVisible(true);
+            score = 0;
+            scoreText.setText(0);
+            makeNewTarget();
+            break;
+         case "game over" :
+            caption.setVisible(true);
+            caption.setText("Game Over");
+            boulders.destroyAllChildren();
+            hunter.setVisible(false);
+            target.destroy();
+            break;
+         default :
+      }
+      state = newState;
+   }
+}
+</script>
+<script type="text/plain" title="Hunter.java">
+class Hunter extends Circle {
+   double vx = 5;
+   double vy = 0;
+   double v = 5;
+   HunterGame main;
+   Hunter(HunterGame main) {
+      super(400, 300, 10);
+      this.main = main;
+      setFillColor(Color.red);
+   }
+   public void act() {
+      if(main.state != "game running") {
+         return;
+      }
+      move(vx, vy);
       if(isKeyDown(Key.ArrowUp)) {
          vx = 0;
@@ Zeile 41: / Zeile 166: @@
          vx = 0;
          vy = v;
-      }
-      if(isKeyDown(Key.ArrowLeft)) {
-         vx = -v;
-         vy = 0;
       }
       if(isKeyDown(Key.ArrowRight)) {
          vx = v;
+         vy = 0;
+      }
+      if(isKeyDown(Key.ArrowLeft)) {
+         vx = -v;
          vy = 0;
       }
-      hunter.move(vx, vy);
+   }
+}
+</script>
-      if(hunter.collidesWith(target)) {
+<script type="text/plain" title="Target.java">
-         moveTarget();
+class Target extends Circle {
-         punkte++;
-         println(punkte + " Punkte!");
+   Target(HunterGame main) {
+      super(-100, -100, 8);
+      setFillColor(Color.lightgreen);
-         addEnemy();
+      // dont create target overlapping with hunter
-      }
+      do {
+         moveTo(Random.randdouble(20, 780), Random.randdouble(20, 580));
-      if(hunter.getCenterX() < 0 || hunter.getCenterX() > 800 ||
+      } while (collidesWith(main.hunter))
-            hunter.getCenterY() < 0 || hunter.getCenterY() > 600
+   }
-         ) {
-         gameOver();
-      }
-      if(hunter.collidesWith(enemies)) {
+}
-         gameOver();
+</script>
-      }
-   }
+<script type="text/plain" title="Boulder.java">
+class Boulder extends Sprite {
-   void moveTarget() {
+   double v = Random.randdouble(-3, -1);  // speed in pixel per 1/30 s
-      target.moveTo(Math.random() * 800, Math.random() * 600);
+   double w = Random.randdouble(-5, 5);   // angular speed in degrees per 1/30 s
-   }
-   void addEnemy() {
+   Boulder(HunterGame main) {
-      Circle enemy = new Circle(Math.random() * 800, Math.random() * 600, 5);
+      // create boulder righthand outside view
-      enemy.setFillColor(Color.red);
+      super(900, Random.randdouble(0, 600), SpriteLibrary.TowerDefense, 108);
-      enemies.add(enemy);
-   }
+      setImageIndex(Random.randint(108, 110));
+      scale(Random.randdouble(0.5, 2.0));
-   void gameOver() {
-      println("Game Over!");
-      stopActing();
    }
+   public void act() {
+      move(v, 0);
+      rotate(w);
+      // if boulder leaves view to the left then swap it to
+      if(getCenterX() < -50) {
+         moveTo(900, getCenterY());
+      }
+   }
 }
 </script>