Added conversion from world coordinates to utilities.

Respective tests also added.

src/test/java/ca/recrown/islandsurvivalcraft/UtilitiesTest.java

@@ -9,6 +9,8 @@ import org.junit.jupiter.api.Test;
 import org.junit.jupiter.api.TestInstance;
 import org.junit.jupiter.api.TestInstance.Lifecycle;
 
+import ca.recrown.islandsurvivalcraft.Types.Point2;
+
 /**
  * Unit test for simple App.
  */
@@ -48,4 +50,34 @@ public class UtilitiesTest {
     public void testMagnitudeAddNegative() {
         assertEquals(-2, Utilities.addMagnitude(-1, 1));
     }
+
+    @Test
+    public void testWorldToChunkCoordinatesNegativePerfect() {
+        assertEquals(new Point2(-4, -3), Utilities.worldToChunkCoordinates(-64, -48));
+    }
+
+    @Test
+    public void testWorldToChunkCoordinatesNegativeOff() {
+        assertEquals(new Point2(-4, -3), Utilities.worldToChunkCoordinates(-55, -33));
+    }
+
+    @Test
+    public void testWorldToChunkCoordinatesPositivePerfect() {
+        assertEquals(new Point2(4, 5), Utilities.worldToChunkCoordinates(64, 80));
+    }
+
+    @Test
+    public void testWorldToChunkCoordinatesPositiveOff() {
+        assertEquals(new Point2(4, 5), Utilities.worldToChunkCoordinates(67, 84));
+    }
+
+    @Test
+    public void testWorldToLocalCoordinatesNegative() {
+        assertEquals(new Point2(2, 5), Utilities.worldToLocalChunkCoordinates(-62, -27));
+    }
+
+    @Test
+    public void testWorldToLocalCoordinatesPositive() {
+        assertEquals(new Point2(7, 3), Utilities.worldToLocalChunkCoordinates(39, 83));
+    }
 }