CCB Premier Import

01-SOURCES/Asteroid.java

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+/*****************************************************
+ * Beginning Java Game Programming, 2nd Edition
+ * by Jonathan S. Harbour
+ * Asteroid class - For polygonal asteroid shapes
+ *****************************************************/
+
+import java.awt.Polygon;
+import java.awt.Rectangle;
+
+/*********************************************************
+ * Asteroid class derives from BaseVectorShape
+ **********************************************************/
+public class Asteroid extends BaseVectorShape {
+    //define the asteroid polygon shape
+    private int[] astx = {-20,-13, 0,20,22, 20, 12,  2,-10,-22,-16};
+    private int[] asty = { 20, 23,17,20,16,-20,-22,-14,-17,-20, -5};
+
+    //rotation speed
+    protected double rotVel;
+    public double getRotationVelocity() { return rotVel; }
+    public void setRotationVelocity(double v) { rotVel = v; }
+
+    //bounding rectangle
+    public Rectangle getBounds() {
+        Rectangle r;
+        r = new Rectangle((int)getX() - 20, (int) getY() - 20, 40, 40);
+        return r;
+    }
+
+    //default constructor
+    Asteroid() {
+        setShape(new Polygon(astx, asty, astx.length));
+        setAlive(true);
+        setRotationVelocity(0.0);
+    }
+
+}