Aufgabe 4.2 - drawStones

src/break_out/model/Level.java

@@ -235,7 +235,10 @@ public class Level extends Thread implements ILevel {
 	 * @return stones The stones of the level
 	 */
 	public ArrayList<Stone> getStones() {
-		return stones;
+		// hacky workaround for ConcurrentModificationExceptions
+		ArrayList<Stone> copy = new ArrayList<>();
+		copy.addAll(stones);
+		return copy;
 	}
 }
     

src/break_out/view/Field.java

@@ -5,10 +5,13 @@ import java.awt.Dimension;
 import java.awt.Graphics;
 import java.awt.Graphics2D;
 import java.awt.RenderingHints;
+import java.util.ArrayList;
 
 import javax.swing.JPanel;
 
 import break_out.Constants;
+import break_out.model.Position;
+import break_out.model.Stone;
 import net.miginfocom.swing.MigLayout;
 
 /**
@@ -99,6 +102,9 @@ public class Field extends JPanel {
 		// Calls the method for drawing the grid
 		drawGrid(g2);
 
+		// Calls the method for drawing the stones
+		drawStones(g2);
+
 		// Calls the method for drawing the ball
 		drawBall(g2);
 
@@ -205,4 +211,42 @@ public class Field extends JPanel {
 		g2.setColor(temp);
 	}
 
+	/**
+	 * Draws the stones
+	 *
+	 * @param g2 The graphics object
+	 */
+	private void drawStones(Graphics2D g2) {
+		// query stones
+		ArrayList<Stone> stones = view.getGame().getLevel().getStones();
+
+		// foreach stone
+		for(Stone stone : stones) {
+			Position pos = stone.getPosition();
+
+			// size of grid blocks
+			int blockWidth = Constants.SCREEN_WIDTH / Constants.SQUARES_X;
+			int blockHeight = Constants.SCREEN_HEIGHT / Constants.SQUARES_Y;
+
+			// if stone has a color, draw it
+			if(stone.getColor() != null) {
+
+				// temporarily save default component color to draw stone in specific color
+				Color temp = g2.getColor();
+				g2.setColor(stone.getColor());
+
+				// fillRoundRect(x, y, width, height, arcWidth, arcHeight)
+				g2.fillRoundRect((int) pos.getX()+1,
+						(int) pos.getY()+1,
+						(int) blockWidth-1,
+						(int) blockHeight-1,
+						0,
+						0);
+
+				// reset color to default
+				g2.setColor(temp);
+			}
+		}
+	}
+
 }