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Entity collisions for arrows

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This commit is contained in:
Konstantin Shandurenko 2021-02-22 14:51:17 +03:00
parent dbfebc50ec
commit b475a4cd78
1 changed files with 39 additions and 9 deletions
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48
src/main/java/net/minestom/server/entity/type/projectile/EntityAbstractArrow.java
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@ -1,18 +1,21 @@
package net.minestom.server.entity.type.projectile;
import net.minestom.server.entity.Entity;
import net.minestom.server.entity.EntityType;
import net.minestom.server.entity.Metadata;
import net.minestom.server.entity.ObjectEntity;
import net.minestom.server.entity.*;
import net.minestom.server.entity.damage.DamageType;
import net.minestom.server.entity.type.Projectile;
import net.minestom.server.instance.Chunk;
import net.minestom.server.instance.Instance;
import net.minestom.server.instance.block.Block;
import net.minestom.server.network.packet.server.play.EntityTeleportPacket;
import net.minestom.server.utils.BlockPosition;
import net.minestom.server.utils.Position;
import net.minestom.server.utils.Vector;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import java.util.Collection;
import java.util.Optional;
import java.util.stream.Collectors;
/**
* Created by k.shandurenko on 22.02.2021
*/
@ -21,11 +24,11 @@ public class EntityAbstractArrow extends ObjectEntity implements Projectile {
private final static byte CRITICAL_BIT = 0x01;
private final static byte NO_CLIP_BIT = 0x02;
private final int shooterID;
private final Entity shooter;
EntityAbstractArrow(@Nullable Entity shooter, @NotNull EntityType entityType, @NotNull Position spawnPosition) {
super(entityType, spawnPosition);
this.shooterID = shooter == null ? 0 : shooter.getEntityId();
this.shooter = shooter;
super.hasPhysics = false;
setBoundingBox(.5F, .5F, .5F);
@ -53,17 +56,25 @@ public class EntityAbstractArrow extends ObjectEntity implements Projectile {
}
}
@SuppressWarnings("ConstantConditions")
private boolean isStuck(Position pos, Position posNow) {
if (pos.isSimilar(posNow)) {
return true;
}
Instance instance = getInstance();
Chunk chunk = null;
Collection<Entity> entities = null;
double part = .25D; // half of the bounding box
Vector dir = posNow.toVector().subtract(pos.toVector());
int parts = (int) Math.ceil(dir.length() / part);
Position direction = dir.normalize().multiply(part).toPosition();
for (int i = 0; i < parts; ++i) {
if (i == parts - 1) {
pos = posNow;
pos.setX(posNow.getX());
pos.setY(posNow.getY());
pos.setZ(posNow.getZ());
} else {
pos.add(direction);
}
@ -73,6 +84,25 @@ public class EntityAbstractArrow extends ObjectEntity implements Projectile {
teleport(pos);
return true;
}
Chunk currentChunk = instance.getChunkAt(pos);
if (currentChunk != chunk) {
chunk = currentChunk;
entities = instance.getChunkEntities(chunk)
.stream()
.filter(entity -> entity instanceof LivingEntity)
.collect(Collectors.toSet());
}
Optional<Entity> victimOptional = entities.stream()
.filter(entity -> entity.getBoundingBox().intersect(pos.getX(), pos.getY(), pos.getZ()))
.findAny();
if (victimOptional.isPresent()) {
LivingEntity victim = (LivingEntity) victimOptional.get();
victim.setArrowCount(victim.getArrowCount() + 1);
victim.damage(DamageType.fromProjectile(this.shooter, this), 2F);
remove();
return super.onGround;
}
}
return false;
}
@ -125,7 +155,7 @@ public class EntityAbstractArrow extends ObjectEntity implements Projectile {
@Override
public int getObjectData() {
return this.shooterID + 1;
return this.shooter == null ? 0 : this.shooter.getEntityId() + 1;
}
}