DFS instantiation in biome generator is now correct.

Performed refactoring

Began work on world height shader (untested).

src/test/java/ca/recrown/islandsurvivalcraft/pathfinding/DepthFirstSearchTest.java

@@ -139,9 +139,9 @@ public class DepthFirstSearchTest {
     @Test
     public void testDFSFindEndNodeMapDValid() {
         Validator validator = new Validator(mapD);
+        dfs = new DepthFirstSearch(validator);
         dfs.setValidatable(validator);
         dfs.setStartPosition(0, 0);
-        
         assertTrue(dfs.findTarget(validator));
         assertEquals(0, dfs.getEndX());
         assertEquals(3, dfs.getEndY());
@@ -150,6 +150,7 @@ public class DepthFirstSearchTest {
     @Test
     public void testDFSFindEndNodeMapEInvalid() {
         Validator validator = new Validator(mapE);
+        dfs = new DepthFirstSearch();
         dfs.setValidatable(validator);
         dfs.setStartPosition(0, 0);