diff --git a/src/utilities/Circle.java b/src/utilities/Circle.java
@@ -0,0 +1,16 @@
+package utilities;
+
+public class Circle {
+
+	public float radius, x, y;
+
+	public Circle(float x, float y, float radius) {
+		this.x = x;
+		this.y = y;
+		this.radius = radius;
+	}
+
+	public boolean intersects(Circle c) {
+		return (((x - c.x) * (x - c.x) + (y - c.y) * (y - c.y)) <= ((radius + c.radius) * (radius + c.radius)));
+	}
+}
diff --git a/src/utilities/TrigHelper.java b/src/utilities/TrigHelper.java
@@ -0,0 +1,9 @@
+package utilities;
+
+public class TrigHelper {
+	public static float angleBetween(float x1, float y1, float x2, float y2){
+		float dX = x1 - x2;
+		float dY = y1 - y2;
+		return (float) Math.atan2(dY, dX);
+	}
+}