feat: Change grass logic to grow next to grass

src/main/java/cz/jzitnik/game/logic/services/grass/GrassGrowingLogic.java

@@ -30,7 +30,7 @@ public class GrassGrowingLogic implements CustomLogicInterface {
                 List<Block> blocks = world[y][x];
                 if (blocks.stream().anyMatch(block -> block.getBlockId().equals("dirt"))) {
                     // Dirt
-                    if (world[y - 1][x].stream().allMatch(block -> block.isGhost() || block.isMob() || block.getBlockId().equals("air")) && random.nextInt(3) < 1) {
+                    if (world[y - 1][x].stream().allMatch(block -> block.isGhost() || block.isMob() || block.getBlockId().equals("air")) && random.nextInt(3) < 1 && isGrassBesides(world, x, y)) {
                         world[y][x].removeIf(block -> block.getBlockId().equals("dirt"));
                         world[y][x].add(ItemBlockSupplier.getBlock("grass"));
                     }
@@ -46,4 +46,35 @@ public class GrassGrowingLogic implements CustomLogicInterface {
 
     }
 
+    private boolean isGrass(List<Block>[][] world, int x, int y) {
+        return world[y][x].stream().anyMatch(i -> i.getBlockId().equals("grass"));
+    }
+
+    private boolean isGrassBesides(List<Block>[][] world, int x, int y) {
+        if (isGrass(world, x + 1, y)) {
+            return true;
+        }
+
+        if (isGrass(world, x + 1, y + 1)) {
+            return true;
+        }
+
+        if (isGrass(world, x + 1, y - 1)) {
+            return true;
+        }
+
+        if (isGrass(world, x - 1, y)) {
+            return true;
+        }
+
+        if (isGrass(world, x - 1, y + 1)) {
+            return true;
+        }
+
+        if (isGrass(world, x - 1, y - 1)) {
+            return true;
+        }
+
+        return false;
+    }
 }