Rename year directories to allow natural ordering

year2/semester2/CT255/Assignments/Assigment-03/Alien.java

@@ -0,0 +1,22 @@
+import java.awt.*;
+import javax.swing.*;
+
+public class Alien extends Sprite2D {
+    private int stepSize = 5;
+
+    public Alien(Image image) {
+        super(image);
+    }
+
+    // method to randomly move the alien
+    public void move() {
+        // generating either a 1 or a 0 to determine if the square should move left or right and up or down - 1 = left/up, 0 = right/down
+        int xDirection = (int)(Math.random()*2);
+        int yDirection = (int)(Math.random()*2);
+
+        // changing the x & y co-ordinates (inherited from superclass) by either plus or minus the stepSize, depending on the direction
+        x += (xDirection == 1) ? -stepSize : + stepSize; 
+        y += (yDirection == 1) ? -stepSize : + stepSize; 
+    } 
+
+}