Add checkerboard validator

Took 14 minutes

Author: DerFrZocker

src/main/java/de/derfrzocker/chunkremover/ChunkRemover.java

@@ -28,6 +28,7 @@
 import de.derfrzocker.chunkremover.impl.ChunkRemoverServiceImpl;
 import de.derfrzocker.chunkremover.impl.WorldDataYamlImpl;
 import de.derfrzocker.chunkremover.impl.v1_16_R3.WorldHandler_v1_16_R3;
+import de.derfrzocker.chunkremover.impl.validators.CheckerboardValidator;
 import de.derfrzocker.chunkremover.impl.validators.RandomValidator;
 import de.derfrzocker.spigot.utils.Config;
 import de.derfrzocker.spigot.utils.Version;
@@ -81,6 +82,7 @@ public void onEnable() {
 
     private void registerValidators(ChunkRemoverService chunkRemoverService) {
         chunkRemoverService.registerChunkValidator("random", new RandomValidator());
+        chunkRemoverService.registerChunkValidator("checkerboard", new CheckerboardValidator());
         chunkRemoverService.registerChunkValidator("always-true", (worldInfo, chunkPosition) -> true);
     }
 

src/main/java/de/derfrzocker/chunkremover/impl/validators/CheckerboardValidator.java

@@ -0,0 +1,71 @@
+/*
+ * MIT License
+ *
+ * Copyright (c) 2021 Marvin (DerFrZocker)
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+package de.derfrzocker.chunkremover.impl.validators;
+
+import de.derfrzocker.chunkremover.api.ChunkPosition;
+import de.derfrzocker.chunkremover.api.ChunkValidator;
+import de.derfrzocker.chunkremover.api.ValidatorData;
+import de.derfrzocker.chunkremover.api.WorldInfo;
+import org.bukkit.util.NumberConversions;
+import org.jetbrains.annotations.NotNull;
+
+// config values:
+//   'inverted': [true, false] removed chunks become solid and solid removed
+//   'tile-length.x/z': integer the length of one tile
+public class CheckerboardValidator implements ChunkValidator {
+
+    @Override
+    public boolean shouldGenerate(@NotNull WorldInfo worldInfo, @NotNull ChunkPosition chunkPosition) {
+        ValidatorData validatorData = worldInfo.getWorldData().getValidatorData();
+        int tileLengthX = NumberConversions.toInt(validatorData.get("tile-length.x", 2));
+        int tileLengthZ = NumberConversions.toInt(validatorData.get("tile-length.z", 2));
+        boolean inverted = validatorData.getBoolean("inverted", false);
+
+        int x = chunkPosition.getX();
+        int z = chunkPosition.getZ();
+
+        if (x < 0) {
+            x++;
+            inverted = !inverted;
+        }
+
+        if (z < 0) {
+            z++;
+            inverted = !inverted;
+        }
+
+        int tileX = x / tileLengthX;
+        int tileZ = z / tileLengthZ;
+        boolean resultX = (tileX & 1) == 0;
+        boolean resultZ = (tileZ & 1) == 0;
+
+        if ((resultX && resultZ) || (!resultX && !resultZ)) {
+            return !inverted;
+        }
+
+        return inverted;
+    }
+
+}

src/main/resources/config.yml

@@ -49,7 +49,9 @@ world-datas:
       # the end cristal on top), regardless if the chunk is removed or not.
     affect-spawn-chunks: true
     chunk-validator:
-      name: "random"
+      name: "checkerboard" # generateds a checkerboard stile world
       data:
-        name-seeded: false
-        chance: 10.5
+        inverted: false # removed becomes generated and generated removed
+        tile-length: # the tile length in chunks
+          x: 2
+          z: 2