Implemented populate function

src/ch/bfh/sevennotseven/Game.java

@@ -1,19 +1,30 @@
 package ch.bfh.sevennotseven;
 
 import java.awt.Point;
+import java.util.ArrayList;
 import java.util.List;
+import java.util.Random;
 
 public class Game {
 	
-	private int[][] field;
+	// Constants
+	static final int numberOfColors = 5;
 	
+	// Private members
+	private int[][] field;
+	private ArrayList<Integer> nextBlocks;
+	private int level;
+	private int score;
+	private int size;
+	private Random rand;
 	
 	public Game(){
 		this(7);
 	}
 	
 	public Game (int size) {
-		field = new int[size][size];
+		this.size = size;
+		this.reset();
 	
 	}
 	
@@ -32,7 +43,7 @@ public class Game {
 	}
 	
 	public List<Integer> getNextBlocks(){
-		return null;
+		return nextBlocks;
 	}
 	
 	public int[][] getField(){
@@ -69,7 +80,45 @@ public class Game {
 	}
 	
 	public void reset(){
+		// Initialize new blocks
+		nextBlocks = new ArrayList<Integer>();
+		nextBlocks.add(1);
+		nextBlocks.add(2);
+		nextBlocks.add(3);
 		
+		// Initialize field, level and score
+		field = new int[size][size];
+		level = 1;
+		score = 0;
+			
+		// Initialize random object
+		rand = new Random();
+		
+		// Populate game field
+		this.populateField();
 	}
 	
+	/*
+	 * Calculates the next game step.
+	 * Add n new blocks to random positions on the field, 
+	 * according to the level number.
+	 */
+	private void populateField(){
+		
+		// while there are blocks left in nextBlocks
+		while(nextBlocks.size() > 0){
+			int x = rand.nextInt(size); // get random x position
+			int y = rand.nextInt(size); // get random y position
+			
+			// if the position is free
+			if(field[x][y] == 0){
+				field[x][y] = nextBlocks.remove(0); // fill with the first element of nextBlocks
+			}
+			
+			// add n new colors to nextBlocks according to the level number.
+			for(int i = 0; i < (level * 3); i++){
+				nextBlocks.add(rand.nextInt(numberOfColors));	
+			}
+		}
+	}
 }