Changeable Conditions

src/main/java/ch/njol/skript/conditions/CondAllayCanDuplicate.java

@@ -1,5 +1,6 @@
 package ch.njol.skript.conditions;
 
+import ch.njol.skript.classes.Changer.ChangeMode;
 import ch.njol.skript.conditions.base.PropertyCondition;
 import ch.njol.skript.doc.Description;
 import ch.njol.skript.doc.Example;
@@ -26,6 +27,18 @@ public boolean check(LivingEntity entity) {
 		return entity instanceof Allay allay ? allay.canDuplicate() : false;
 	}
 
+	@Override
+	public boolean acceptChange(ChangeMode mode) {
+		return mode == ChangeMode.SET;
+	}
+
+	@Override
+	protected void change(LivingEntity entity, boolean canDuplicate, ChangeMode mode) {
+		if (entity instanceof Allay allay) {
+			allay.setCanDuplicate(canDuplicate);
+		}
+	}
+
 	@Override
 	protected String getPropertyName() {
 		return "duplicate";

src/main/java/ch/njol/skript/conditions/CondCanFly.java

@@ -1,5 +1,6 @@
 package ch.njol.skript.conditions;
 
+import ch.njol.skript.classes.Changer.ChangeMode;
 import org.bukkit.entity.Player;
 
 import ch.njol.skript.conditions.base.PropertyCondition;
@@ -22,6 +23,22 @@ public class CondCanFly extends PropertyCondition<Player> {
 	public boolean check(Player player) {
 		return player.getAllowFlight();
 	}
+
+	@Override
+	public boolean acceptChange(ChangeMode mode) {
+		return mode == ChangeMode.SET || mode == ChangeMode.RESET;
+	}
+
+	@Override
+	protected void change(Player player, boolean allowFlight, ChangeMode mode) {
+		if (mode == ChangeMode.RESET) {
+			allowFlight = switch (player.getGameMode()) {
+				case CREATIVE, SPECTATOR -> true;
+				default -> false;
+			};
+		}
+		player.setAllowFlight(allowFlight);
+	}
 
 	@Override
 	protected PropertyType getPropertyType() {

src/main/java/ch/njol/skript/conditions/CondCanPickUpItems.java

@@ -1,5 +1,6 @@
 package ch.njol.skript.conditions;
 
+import ch.njol.skript.classes.Changer.ChangeMode;
 import ch.njol.skript.conditions.base.PropertyCondition;
 import ch.njol.skript.doc.Description;
 import ch.njol.skript.doc.Example;
@@ -40,4 +41,14 @@ protected String getPropertyName() {
 		return "pick up items";
 	}
 
+	@Override
+	public boolean acceptChange(ChangeMode mode) {
+		return mode == ChangeMode.SET;
+	}
+
+	@Override
+	public void change(LivingEntity livingEntity, boolean canPickUpItems, ChangeMode mode) {
+		livingEntity.setCanPickupItems(canPickUpItems);
+	}
+
 }

src/main/java/ch/njol/skript/conditions/CondCanSee.java

@@ -1,6 +1,7 @@
 package ch.njol.skript.conditions;
 
 import ch.njol.skript.Skript;
+import ch.njol.skript.classes.Changer.ChangeMode;
 import ch.njol.skript.conditions.base.PropertyCondition;
 import ch.njol.skript.conditions.base.PropertyCondition.PropertyType;
 import ch.njol.skript.doc.*;
@@ -11,6 +12,7 @@
 import org.bukkit.entity.Entity;
 import org.bukkit.entity.Player;
 import org.bukkit.event.Event;
+import org.bukkit.plugin.Plugin;
 import org.jetbrains.annotations.Nullable;
 
 @Name("Can See")
@@ -62,6 +64,33 @@ public boolean check(Event event) {
 				), isNegated());
 	}
 
+	@Override
+	public boolean acceptChange(ChangeMode mode) {
+		return mode == ChangeMode.SET || mode == ChangeMode.RESET;
+	}
+
+	@Override
+	public void change(Event event, boolean canSee, ChangeMode mode) {
+		if (mode == ChangeMode.RESET) {
+			canSee = true;
+		}
+		Plugin plugin = Skript.getInstance();
+		Entity[] entities = this.entities.getArray(event);
+		if (canSee) {
+			for (Player viewer : viewers.getArray(event)) {
+				for (Entity entity : entities) {
+					viewer.showEntity(plugin, entity);
+				}
+			}
+		} else {
+			for (Player viewer : viewers.getArray(event)) {
+				for (Entity entity : entities) {
+					viewer.hideEntity(plugin, entity);
+				}
+			}
+		}
+	}
+
 	@Override
 	public String toString(@Nullable Event event, boolean debug) {
 		return PropertyCondition.toString(this, PropertyType.CAN, event, debug, viewers,

src/main/java/ch/njol/skript/conditions/CondCancelled.java

@@ -1,6 +1,7 @@
 package ch.njol.skript.conditions;
 
 import ch.njol.skript.Skript;
+import ch.njol.skript.classes.Changer.ChangeMode;
 import ch.njol.skript.doc.Description;
 import ch.njol.skript.doc.Example;
 import ch.njol.skript.doc.Name;
@@ -41,6 +42,18 @@ public boolean check(Event e) {
 		return (e instanceof Cancellable && ((Cancellable) e).isCancelled()) ^ isNegated();
 	}
 
+	@Override
+	public boolean acceptChange(ChangeMode mode) {
+		return mode == ChangeMode.SET;
+	}
+
+	@Override
+	public void change(Event event, boolean cancelled, ChangeMode mode) {
+		if (event instanceof Cancellable cancellable) {
+			cancellable.setCancelled(cancelled);
+		}
+	}
+
 	@Override
 	public String toString(@Nullable Event e, boolean debug) {
 		return isNegated() ? "event is not cancelled" : "event is cancelled";

src/main/java/ch/njol/skript/conditions/CondElytraBoostConsume.java

@@ -1,6 +1,7 @@
 package ch.njol.skript.conditions;
 
 import ch.njol.skript.Skript;
+import ch.njol.skript.classes.Changer.ChangeMode;
 import ch.njol.skript.doc.*;
 import ch.njol.skript.lang.Condition;
 import ch.njol.skript.lang.EventRestrictedSyntax;
@@ -50,6 +51,18 @@ public boolean check(Event event) {
 		return boostEvent.shouldConsume() == checkConsume;
 	}
 
+	@Override
+	public boolean acceptChange(ChangeMode mode) {
+		return mode == ChangeMode.SET;
+	}
+
+	@Override
+	public void change(Event event, boolean consume, ChangeMode mode) {
+		if (event instanceof PlayerElytraBoostEvent boostEvent) {
+			boostEvent.setShouldConsume(consume);
+		}
+	}
+
 	@Override
 	public String toString(@Nullable Event event, boolean debug) {
 		return "the boosting firework will " + (checkConsume ? "" : "not") + " be consumed";

src/main/java/ch/njol/skript/conditions/CondEndermanStaredAt.java

@@ -1,6 +1,7 @@
 package ch.njol.skript.conditions;
 
 import ch.njol.skript.Skript;
+import ch.njol.skript.classes.Changer.ChangeMode;
 import ch.njol.skript.conditions.base.PropertyCondition;
 import ch.njol.skript.doc.*;
 import org.bukkit.entity.Enderman;
@@ -27,6 +28,18 @@ public boolean check(LivingEntity entity) {
 		return false;
 	}
 
+	@Override
+	public boolean acceptChange(ChangeMode mode) {
+		return mode == ChangeMode.SET;
+	}
+
+	@Override
+	protected void change(LivingEntity entity, boolean hasBeenStaredAt, ChangeMode mode) {
+		if (entity instanceof Enderman enderman) {
+			enderman.setHasBeenStaredAt(hasBeenStaredAt);
+		}
+	}
+
 	@Override
 	protected String getPropertyName() {
 		return "stared at";

src/main/java/ch/njol/skript/conditions/CondEntityUnload.java

@@ -1,5 +1,6 @@
 package ch.njol.skript.conditions;
 
+import ch.njol.skript.classes.Changer.ChangeMode;
 import ch.njol.skript.conditions.base.PropertyCondition;
 import ch.njol.skript.doc.Description;
 import ch.njol.skript.doc.Example;
@@ -29,6 +30,16 @@ public boolean check(LivingEntity entity) {
 		return entity.getRemoveWhenFarAway();
 	}
 
+	@Override
+	public boolean acceptChange(ChangeMode mode) {
+		return mode == ChangeMode.SET;
+	}
+
+	@Override
+	protected void change(LivingEntity entity, boolean remove, ChangeMode mode) {
+		entity.setRemoveWhenFarAway(remove);
+	}
+
 	@Override
 	protected String getPropertyName() {
 		return "despawn on chunk unload";

src/main/java/ch/njol/skript/conditions/CondGlowingText.java

@@ -2,6 +2,7 @@
 
 import ch.njol.skript.Skript;
 import ch.njol.skript.aliases.ItemType;
+import ch.njol.skript.classes.Changer.ChangeMode;
 import org.bukkit.block.Block;
 
 import ch.njol.skript.conditions.base.PropertyCondition;
@@ -40,6 +41,32 @@ public boolean check(Object obj) {
 		return false;
 	}
 
+	@Override
+	public boolean acceptChange(ChangeMode mode) {
+		return mode == ChangeMode.SET || mode == ChangeMode.RESET;
+	}
+
+	@Override
+	protected void change(Object object, boolean glowing, ChangeMode mode) {
+		if (object instanceof Block block) {
+			BlockState state = block.getState();
+			if (state instanceof Sign sign) {
+				sign.setGlowingText(glowing);
+				sign.update();
+			}
+		} else if (object instanceof ItemType itemType) {
+			ItemMeta meta = itemType.getItemMeta();
+			if (meta instanceof BlockStateMeta blockStateMeta) {
+				BlockState state = blockStateMeta.getBlockState();
+				if (state instanceof Sign sign) {
+					sign.setGlowingText(glowing);
+					blockStateMeta.setBlockState(sign);
+					itemType.setItemMeta(meta);
+				}
+			}
+		}
+	}
+
 	@Override
 	protected PropertyType getPropertyType() {
 		return PropertyType.HAVE;

src/main/java/ch/njol/skript/conditions/CondGoatHasHorns.java

@@ -1,5 +1,6 @@
 package ch.njol.skript.conditions;
 
+import ch.njol.skript.classes.Changer.ChangeMode;
 import ch.njol.skript.conditions.base.PropertyCondition;
 import ch.njol.skript.doc.*;
 import ch.njol.skript.effects.EffGoatHorns.GoatHorn;
@@ -57,6 +58,23 @@ public boolean check(LivingEntity entity) {
 		};
 	}
 
+	@Override
+	public boolean acceptChange(ChangeMode mode) {
+		return goatHorn != GoatHorn.ANY && mode == ChangeMode.SET;
+	}
+
+	@Override
+	protected void change(LivingEntity entity, boolean hasHorn, ChangeMode mode) {
+		if (entity instanceof Goat goat) {
+			if (goatHorn != GoatHorn.LEFT) {
+				goat.setRightHorn(hasHorn);
+			}
+			if (goatHorn != GoatHorn.RIGHT) {
+				goat.setLeftHorn(hasHorn);
+			}
+		}
+	}
+
 	@Override
 	protected String getPropertyName() {
 		return switch (goatHorn) {

src/main/java/ch/njol/skript/conditions/CondIgnitionProcess.java

@@ -1,5 +1,6 @@
 package ch.njol.skript.conditions;
 
+import ch.njol.skript.classes.Changer.ChangeMode;
 import org.bukkit.entity.Creeper;
 import org.bukkit.entity.LivingEntity;
 
@@ -13,6 +14,7 @@
 import ch.njol.skript.lang.Expression;
 import ch.njol.skript.lang.SkriptParser.ParseResult;
 import ch.njol.util.Kleenean;
+import org.bukkit.event.Event;
 
 @Name("Ignition Process")
 @Description("Checks if a creeper is going to explode.")
@@ -46,6 +48,18 @@ public boolean check(LivingEntity entity) {
 		return entity instanceof Creeper creeper && creeper.isIgnited();
 	}
 
+	@Override
+	public boolean acceptChange(ChangeMode mode) {
+		return mode == ChangeMode.SET;
+	}
+
+	@Override
+	protected void change(LivingEntity entity, boolean ignited, ChangeMode mode) {
+		if (entity instanceof Creeper creeper) {
+			creeper.setIgnited(ignited);
+		}
+	}
+
 	@Override
 	protected String getPropertyName() {
 		return "going to explode";

src/main/java/ch/njol/skript/conditions/CondIncendiary.java

@@ -1,5 +1,6 @@
 package ch.njol.skript.conditions;
 
+import ch.njol.skript.classes.Changer.ChangeMode;
 import org.bukkit.entity.Entity;
 import org.bukkit.entity.Explosive;
 import org.bukkit.event.Event;
@@ -65,6 +66,27 @@ public boolean check(Event e) {
 		return entities.check(e, entity -> entity instanceof Explosive && ((Explosive) entity).isIncendiary(), isNegated());
 	}
 
+	@Override
+	public boolean acceptChange(ChangeMode mode) {
+		return mode == ChangeMode.SET;
+	}
+
+	@Override
+	public void change(Event event, boolean isIncendiary, ChangeMode mode) {
+		if (isEvent) {
+			if (event instanceof ExplosionPrimeEvent explosionPrimeEvent) {
+				explosionPrimeEvent.setFire(isIncendiary);
+			}
+			return;
+		}
+
+		for (Entity entity : entities.getArray(event)) {
+			if (entity instanceof Explosive explosive) {
+				explosive.setIsIncendiary(isIncendiary);
+			}
+		}
+	}
+
 	@Override
 	public String toString(@Nullable Event e, boolean debug) {
 		if (isEvent)