Trim performance (#451)

* Increase performance slightly when trimming.
If the chunk section is all one blocks (common in plotworlds) it'll be a nice little boost.

* Cache whether blocks are ticking or not. Greatly reduces the time required to create a palette

* collapse 5 lines to 2.

* Also apply to 14 and 15 for the numpties

* Cleanup
Actually ignore the exception - remove my debug print.
Remove double semi-colon

* Apparently 1.14/15 matter too still.

worldedit-core/src/main/java/com/boydti/fawe/beta/implementation/blocks/BitSetBlocks.java

@@ -153,4 +153,9 @@ public class BitSetBlocks implements IChunkSet {
     public boolean trim(boolean aggressive) {
         return false;
     }
+
+    @Override
+    public boolean trim(boolean aggressive, int layer) {
+        return false;
+    }
 }

worldedit-core/src/main/java/com/boydti/fawe/beta/implementation/blocks/CharBlocks.java

@@ -60,6 +60,17 @@ public abstract class CharBlocks implements IBlocks {
         return result;
     }
 
+    @Override
+    public boolean trim(boolean aggressive, int layer) {
+        boolean result = true;
+        if (sections[layer] == EMPTY && blocks[layer] != null) {
+            blocks[layer] = null;
+        } else {
+            result = false;
+        }
+        return result;
+    }
+
     @Override
     public IChunkSet reset() {
         for (int i = 0; i < 16; i++) {

worldedit-core/src/main/java/com/boydti/fawe/beta/implementation/blocks/CharGetBlocks.java

@@ -25,6 +25,13 @@ public abstract class CharGetBlocks extends CharBlocks implements IChunkGet {
         return true;
     }
 
+    @Override
+    public boolean trim(boolean aggressive, int layer) {
+        sections[layer] = EMPTY;
+        blocks[layer] = null;
+        return true;
+    }
+
     @Override
     public IChunkSet reset() {
         super.reset();

worldedit-core/src/main/java/com/boydti/fawe/beta/implementation/blocks/FallbackChunkGet.java

@@ -85,6 +85,11 @@ public class FallbackChunkGet implements IChunkGet {
         return true;
     }
 
+    @Override
+    public boolean trim(boolean aggressive, int layer) {
+        return true;
+    }
+
     @Override
     public <T extends Future<T>> T call(IChunkSet set, Runnable finalize) {
         for (int layer = 0; layer < 16; layer++) {

worldedit-core/src/main/java/com/boydti/fawe/beta/implementation/blocks/NullChunkGet.kt

@@ -50,6 +50,10 @@ object NullChunkGet : IChunkGet {
         return true
     }
 
+    override fun trim(aggressive: Boolean, layer: Int): Boolean {
+        return true
+    }
+
     override fun <T : Future<T>> call(set: IChunkSet, finalize: Runnable): T? {
         return null
     }

worldedit-core/src/main/java/com/boydti/fawe/beta/implementation/chunk/ChunkHolder.java

@@ -344,6 +344,11 @@ public class ChunkHolder<T extends Future<T>> implements IQueueChunk<T> {
         return false;
     }
 
+    @Override
+    public boolean trim(boolean aggressive, int layer) {
+        return this.trim(aggressive);
+    }
+
     @Override
     public boolean isEmpty() {
         return chunkSet == null || chunkSet.isEmpty();

worldedit-core/src/main/java/com/boydti/fawe/beta/implementation/chunk/NullChunk.kt

@@ -117,5 +117,9 @@ object NullChunk : IQueueChunk<Nothing> {
     override fun trim(aggressive: Boolean): Boolean {
         return true
     }
+
+    override fun trim(aggressive: Boolean, layer: Int): Boolean {
+        return true
+    }
 }
 

worldedit-core/src/main/java/com/boydti/fawe/beta/implementation/processors/BatchProcessorHolder.java

@@ -4,7 +4,6 @@ import com.boydti.fawe.beta.IBatchProcessor;
 import com.boydti.fawe.beta.IChunk;
 import com.boydti.fawe.beta.IChunkGet;
 import com.boydti.fawe.beta.IChunkSet;
-import com.sk89q.worldedit.extent.Extent;
 
 public class BatchProcessorHolder implements IBatchProcessorHolder {
     private IBatchProcessor processor = EmptyBatchProcessor.INSTANCE;