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src/main/java/ch/njol/skript/conditions/CondHasLineOfSight.java
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/** | ||
* This file is part of Skript. | ||
* | ||
* Skript is free software: you can redistribute it and/or modify | ||
* it under the terms of the GNU General Public License as published by | ||
* the Free Software Foundation, either version 3 of the License, or | ||
* (at your option) any later version. | ||
* | ||
* Skript is distributed in the hope that it will be useful, | ||
* but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
* GNU General Public License for more details. | ||
* | ||
* You should have received a copy of the GNU General Public License | ||
* along with Skript. If not, see <http://www.gnu.org/licenses/>. | ||
* | ||
* Copyright Peter Güttinger, SkriptLang team and contributors | ||
*/ | ||
package ch.njol.skript.conditions; | ||
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import ch.njol.skript.Skript; | ||
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.lang.Condition; | ||
import ch.njol.skript.lang.Expression; | ||
import ch.njol.skript.lang.SkriptParser.ParseResult; | ||
import ch.njol.util.Kleenean; | ||
import org.bukkit.Location; | ||
import org.bukkit.entity.Entity; | ||
import org.bukkit.entity.LivingEntity; | ||
import org.bukkit.event.Event; | ||
import org.eclipse.jdt.annotation.Nullable; | ||
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@Name("Has Line of Sight") | ||
@Description("Checks whether living entities have an unobstructed line of sight to other entities or locations.") | ||
@Examples({ | ||
"player has direct line of sight to location 5 blocks to the right of player", | ||
"victim has line of sight to attacker", | ||
"player has no line of sight to location 100 blocks in front of player" | ||
}) | ||
@Since("INSERT VERSION") | ||
public class CondHasLineOfSight extends Condition { | ||
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static { | ||
Skript.registerCondition(CondHasLineOfSight.class, | ||
"%livingentities% (has|have) [a] [direct] line of sight to %entities/locations%", | ||
"%livingentities% does(n't| not) have [a] [direct] line of sight to %entities/locations%", | ||
"%livingentities% (has|have) no [direct] line of sight to %entities/locations%"); | ||
} | ||
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private Expression<LivingEntity> viewers; | ||
private Expression<?> targets; | ||
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@Override | ||
public boolean init(Expression<?>[] exprs, int matchedPattern, Kleenean isDelayed, ParseResult parseResult) { | ||
viewers = (Expression<LivingEntity>) exprs[0]; | ||
targets = exprs[1]; | ||
setNegated(matchedPattern > 0); | ||
return true; | ||
} | ||
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@Override | ||
public boolean check(Event event) { | ||
return targets.check(event, (target) -> { | ||
if (target instanceof Entity) { | ||
return viewers.check(event, (viewer) -> viewer.hasLineOfSight((Entity) target)); | ||
} else if (target instanceof Location) { | ||
return viewers.check(event, (viewer) -> viewer.hasLineOfSight((Location) target)); | ||
} else { | ||
return false; | ||
} | ||
}, isNegated()); | ||
} | ||
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@Override | ||
public String toString(@Nullable Event event, boolean debug) { | ||
return viewers.toString(event, debug) + " has" + (isNegated() ? " no" : "") + " line of sight to " + targets.toString(event,debug); | ||
} | ||
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} |
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src/test/skript/tests/syntaxes/conditions/CondHasLineOfSight.sk
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test "line of sight": | ||
set {_a} to (spawn of world "world") | ||
set {_b} to {_a} ~ vector(0, 10, 0) | ||
loop blocks between {_a} and {_b}: | ||
set {_block::%loop-block%} to type of loop-block | ||
set loop-block to air | ||
spawn pig at spawn of world "world" | ||
set {_pig1} to last spawned entity | ||
spawn pig at {_b}: | ||
assert pig has line of sight to {_pig1} with "Pigs should have line of sight to each other 1" | ||
assert {_pig1} has line of sight to pig with "Pigs should have line of sight to each other 2" | ||
set block at ({_a} ~ vector(0, 5, 0)) to stone | ||
assert pig has no line of sight to {_pig1} with "Pigs should not have line of sight to each other 1" | ||
assert {_pig1} has no line of sight to pig with "Pigs should not have line of sight to each other 2" | ||
delete pig | ||
delete entity within {_pig1} | ||
loop blocks between {_a} and {_b}: | ||
set loop-block to {_block::%loop-block%} |