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Fixed non-smooth pathfinding by setting the velocity of the creature, therefore allowing the client to predict the position and smooth the path

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This commit is contained in:
jglrxavpok 2020-07-31 18:55:08 +02:00
parent 7b947ba09b
commit 49b4f0c79d
3 changed files with 25 additions and 9 deletions
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2
src/main/java/fr/themode/demo/commands/SimpleCommand.java
View File

@ -53,7 +53,7 @@ public class SimpleCommand implements CommandProcessor {
Instance instance = player.getInstance();
ChickenCreature chickenCreature = new ChickenCreature(new Position(-10, 40, -10));
ChickenCreature chickenCreature = new ChickenCreature(new Position(-10, 43, -10));
chickenCreature.setInstance(instance);
chickenCreature.setPathTo(player.getPosition());

9
src/main/java/net/minestom/server/entity/Entity.java
View File

@ -428,7 +428,7 @@ public abstract class Entity implements Viewable, EventHandler, DataContainer {
sendSynchronization();
if (shouldSendVelocityUpdate(time)) {
sendPacketToViewersAndSelf(getVelocityPacket());
sendVelocityPacket();
lastVelocityUpdateTime = time;
}
}
@ -482,6 +482,13 @@ public abstract class Entity implements Viewable, EventHandler, DataContainer {
}
}
/**
* Equivalent to <code>sendPacketsToViewers(getVelocityPacket());</code>
*/
public void sendVelocityPacket() {
sendPacketsToViewers(getVelocityPacket());
}
/**
* Get the number of ticks this entity has been active for
*

23
src/main/java/net/minestom/server/entity/EntityCreature.java
View File

@ -2,6 +2,7 @@ package net.minestom.server.entity;
import com.extollit.gaming.ai.path.HydrazinePathFinder;
import com.extollit.gaming.ai.path.model.PathObject;
import net.minestom.server.MinecraftServer;
import net.minestom.server.attribute.Attribute;
import net.minestom.server.collision.CollisionUtils;
import net.minestom.server.entity.pathfinding.PFPathingEntity;
@ -50,8 +51,6 @@ public abstract class EntityCreature extends LivingEntity {
@Override
public void update(long time) {
super.update(time);
// Path finding
path = pathFinder.update();
if (path != null) {
@ -61,12 +60,11 @@ public abstract class EntityCreature extends LivingEntity {
} else {
final float speed = getAttributeValue(Attribute.MOVEMENT_SPEED);
Position targetPosition = pathingEntity.getTargetPosition();
//targetPosition = new Position(-5.5f, 40f, -5.5f);
//System.out.println("target: " + targetPosition + " : " + (System.currentTimeMillis() - time));
//System.out.println("current: " + getPosition());
moveTowards(targetPosition, speed);
}
}
super.update(time);
}
@Override
@ -306,12 +304,23 @@ public abstract class EntityCreature extends LivingEntity {
final float currentZ = position.getZ();
final float targetX = direction.getX();
final float targetZ = direction.getZ();
final float dz = targetZ - currentZ;
final float dx = targetX - currentX;
final float radians = (float) Math.atan2(targetZ - currentZ, targetX - currentX);
// the purpose of these few lines is to slow down entities when they reach their destination
float distSquared = dx * dx + dz * dz;
if(speed > distSquared) {
speed = distSquared;
}
final float radians = (float) Math.atan2(dz, dx);
final float speedX = (float) (Math.cos(radians) * speed);
final float speedZ = (float) (Math.sin(radians) * speed);
move(speedX, 0, speedZ, true);
// TODO: is a hard set an issue if there are other external forces at play?
final float tps = MinecraftServer.TICK_PER_SECOND;
velocity.setX(speedX * tps);
velocity.setZ(speedZ * tps);
}
private ItemStack getEquipmentItem(ItemStack itemStack, ArmorEquipEvent.ArmorSlot armorSlot) {