ExprExplodedBlocks - fix not being able to remove

src/main/java/ch/njol/skript/expressions/ExprExplodedBlocks.java

@@ -20,6 +20,8 @@
 
 import java.util.List;
 
+import ch.njol.skript.classes.Changer.ChangeMode;
+import ch.njol.util.coll.CollectionUtils;
 import org.bukkit.block.Block;
 import org.bukkit.event.Event;
 import org.bukkit.event.entity.EntityExplodeEvent;
@@ -38,12 +40,23 @@
 import ch.njol.util.Kleenean;
 
 @Name("Exploded Blocks")
-@Description("Get all the blocks that were destroyed in an explode event")
-@Examples({"on explode:",
-	"\tloop exploded blocks:",
-	"\t\tadd loop-block to {exploded::blocks::*}"})
+@Description("Get all the blocks that were destroyed in an explode event. Supports add/remove/set/clear/delete blocks.")
+@Examples({
+	"on explode:",
+		"\tloop exploded blocks:",
+			"\t\tadd loop-block to {exploded::blocks::*}",
+	"on explode:",
+		"\tloop exploded blocks:",
+			"\t\tif loop-block is grass:",
+				"\t\t\tremove loop-block from exploded blocks",
+	"on explode:",
+		"\tclear exploded blocks",
+	"on explode:",
+		"\tset exploded blocks to blocks in radius 10 around event-entity",
+	"on explode:",
+		"\tadd blocks above event-entity to exploded blocks"})
 @Events("explode")
-@Since("2.5")
+@Since("2.5, INSERT VERSION (modify list)")
 public class ExprExplodedBlocks extends SimpleExpression<Block> {
 
 	static {
@@ -68,6 +81,42 @@ protected Block[] get(Event e) {
 		List<Block> blockList = ((EntityExplodeEvent) e).blockList();
 		return blockList.toArray(new Block[blockList.size()]);
 	}
+
+	@Override
+	public @Nullable Class<?>[] acceptChange(ChangeMode mode) {
+		switch (mode) {
+			case ADD:
+			case REMOVE:
+			case SET:
+				return CollectionUtils.array(Block[].class);
+			case DELETE:
+				return CollectionUtils.array();
+			default:
+				return null;
+		}
+	}
+
+	@Override
+	public void change(Event event, @Nullable Object[] delta, ChangeMode mode) {
+		if (!(event instanceof EntityExplodeEvent))
+			return;
+
+		List<Block> blocks = ((EntityExplodeEvent) event).blockList();
+		if (mode == ChangeMode.DELETE) {
+			blocks.clear();
+			return;
+		}
+		if (mode == ChangeMode.SET)
+			blocks.clear();
+		for (Object object : delta) {
+			if (object instanceof Block) {
+				if (mode == ChangeMode.REMOVE)
+					blocks.remove((Block) object);
+				else if (mode == ChangeMode.ADD || mode == ChangeMode.SET)
+					blocks.add((Block) object);
+			}
+		}
+	}
 
 	@Override
 	public boolean isSingle() {