Eff + Cond Lidded

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

@@ -0,0 +1,92 @@
+package ch.njol.skript.expressions;
+
+import ch.njol.skript.Skript;
+import ch.njol.skript.classes.Changer.ChangeMode;
+import ch.njol.skript.doc.Description;
+import ch.njol.skript.doc.Examples;
+import ch.njol.skript.doc.Name;
+import ch.njol.skript.doc.Since;
+import ch.njol.skript.expressions.base.PropertyExpression;
+import ch.njol.skript.lang.Expression;
+import ch.njol.skript.lang.ExpressionType;
+import ch.njol.skript.lang.SkriptParser.ParseResult;
+import ch.njol.util.Kleenean;
+import ch.njol.util.coll.CollectionUtils;
+import org.bukkit.block.BlockState;
+import org.bukkit.block.Block;
+import org.bukkit.block.Lidded;
+import org.bukkit.event.Event;
+import org.jetbrains.annotations.Nullable;
+
+import java.util.ArrayList;
+import java.util.List;
+
+@Name("Lid State")
+@Description("Set the lid state of a chest, ender chest, barrel and shulker box.")
+@Examples({
+	"if the lid state of {_chest} is false:",
+	"\tset the lid state of {_chest} to true"
+})
+@Since("INSERT VERSION")
+public class ExprLiddable extends PropertyExpression<Block, Boolean> {
+
+	static {
+		Skript.registerExpression(ExprLiddable.class, Boolean.class, ExpressionType.PROPERTY, "[the] lid [state] of %blocks%");
+	}
+
+	@Override
+	public boolean init(Expression<?>[] exprs, int matchedPattern, Kleenean isDelayed, ParseResult parseResult) {
+		setExpr((Expression<Block>) exprs[0]);
+		return true;
+	}
+
+	@Override
+	protected Boolean @Nullable [] get(Event event, Block[] source) {
+		List<Boolean> booleanList = new ArrayList<>();
+		for (Block block : getExpr().getArray(event)) {
+			BlockState state = block.getState();
+			if (state instanceof Lidded lidBlock) {
+				booleanList.add(lidBlock.isOpen());
+			}
+		}
+		return booleanList.toArray(new Boolean[0]);
+	}
+
+	@Override
+	public Class<?> @Nullable [] acceptChange(ChangeMode mode) {
+		if (mode == ChangeMode.SET)
+			return CollectionUtils.array(Boolean.class);
+		return null;
+	};
+
+	@Override
+	public void change(Event event, @Nullable Object[] delta, ChangeMode mode) {
+		boolean toOpen = (boolean) delta[0];
+		if (toOpen) {
+			for (Block block : getExpr().getArray(event)) {
+				BlockState state = block.getState();
+				if (state instanceof Lidded lidBlock) {
+					lidBlock.open();
+				}
+			}
+		} else {
+			for (Block block : getExpr().getArray(event)) {
+				BlockState state = block.getState();
+				if (state instanceof Lidded lidBlock) {
+					lidBlock.close();
+				}
+			}
+		}
+	}
+
+	@Override
+	public Class<Boolean> getReturnType() {
+		return Boolean.class;
+	}
+
+	@Override
+	public String toString(@Nullable Event event, boolean debug) {
+		return "lid state of " + getExpr().toString(event, debug);
+	}
+
+}