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8c5b837e05
Firstly, the old methods all routed to the CompletableFuture method. However, the CF method could not guarantee that if the caller was off-main that the future would be "completed" on-main. Since the callback methods used the CF one, this meant that the callback methods did not guarantee that the callbacks were to be called on the main thread. Now, all methods route to getChunkAtAsync(x, z, gen, urgent, cb) so that the methods with the callback are guaranteed to invoke the callback on the main thread. The CF behavior remains unchanged; it may still appear to complete on main if invoked off-main. Secondly, remove the scheduleOnMain invocation in the async chunk completion. This unnecessarily delays the callback by 1 tick. Thirdly, add getChunksAtAsync(minX, minZ, maxX, maxZ, ...) which will load chunks within an area. This method is provided as a helper as keeping all chunks loaded within an area can be complicated to implement for plugins (due to the lacking ticket API), and is already implemented internally anyways. Fourthly, remove the ticket addition that occured with getChunkAt and getChunkAtAsync. The ticket addition may delay the unloading of the chunk unnecessarily. It also fixes a very rare timing bug where the future/callback would be completed after the chunk unloads.
99 lines
6.9 KiB
Diff
99 lines
6.9 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Aikar <aikar@aikar.co>
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Date: Tue, 25 Aug 2020 20:45:36 -0400
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Subject: [PATCH] Fix Entity Teleportation and cancel velocity if teleported
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Uses correct setPositionRotation for Entity teleporting instead of setLocation
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as this is how Vanilla teleports entities.
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Cancel any pending motion when teleported.
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diff --git a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
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index 00ce20359f6d73acf3f1016806e5f4f3b6d01bcd..1754e413dc1b7a18b3fc0b981eae11283b2106e5 100644
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--- a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
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+++ b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
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@@ -685,7 +685,7 @@ public class ServerGamePacketListenerImpl extends ServerCommonPacketListenerImpl
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return;
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}
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- this.player.absMoveTo(this.awaitingPositionFromClient.x, this.awaitingPositionFromClient.y, this.awaitingPositionFromClient.z, this.player.getYRot(), this.player.getXRot());
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+ this.player.moveTo(this.awaitingPositionFromClient.x, this.awaitingPositionFromClient.y, this.awaitingPositionFromClient.z, this.player.getYRot(), this.player.getXRot()); // Paper - Fix Entity Teleportation and cancel velocity if teleported
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this.lastGoodX = this.awaitingPositionFromClient.x;
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this.lastGoodY = this.awaitingPositionFromClient.y;
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this.lastGoodZ = this.awaitingPositionFromClient.z;
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diff --git a/src/main/java/net/minecraft/world/entity/Entity.java b/src/main/java/net/minecraft/world/entity/Entity.java
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index 9833c1876a6fdce15326f10ff9a44ab3587eaf32..e56ee4ee930bb788fb7b0e254798308571802ab4 100644
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--- a/src/main/java/net/minecraft/world/entity/Entity.java
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+++ b/src/main/java/net/minecraft/world/entity/Entity.java
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@@ -180,6 +180,7 @@ public abstract class Entity implements SyncedDataHolder, Nameable, EntityAccess
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// CraftBukkit start
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private static final int CURRENT_LEVEL = 2;
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+ public boolean preserveMotion = true; // Paper - Fix Entity Teleportation and cancel velocity if teleported; keep initial motion on first setPositionRotation
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static boolean isLevelAtLeast(CompoundTag tag, int level) {
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return tag.contains("Bukkit.updateLevel") && tag.getInt("Bukkit.updateLevel") >= level;
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}
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@@ -1944,6 +1945,13 @@ public abstract class Entity implements SyncedDataHolder, Nameable, EntityAccess
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}
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public void moveTo(double x, double y, double z, float yaw, float pitch) {
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+ // Paper start - Fix Entity Teleportation and cancel velocity if teleported
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+ if (!preserveMotion) {
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+ this.deltaMovement = Vec3.ZERO;
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+ } else {
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+ this.preserveMotion = false;
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+ }
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+ // Paper end - Fix Entity Teleportation and cancel velocity if teleported
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this.setPosRaw(x, y, z);
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this.setYRot(yaw);
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this.setXRot(pitch);
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diff --git a/src/main/java/net/minecraft/world/entity/boss/enderdragon/phases/DragonStrafePlayerPhase.java b/src/main/java/net/minecraft/world/entity/boss/enderdragon/phases/DragonStrafePlayerPhase.java
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index 2db75673e525708d04bda9f6c9af80e7f8d361e6..be2b5f56f6f29c82c4fa9df33287d0ddb589f383 100644
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--- a/src/main/java/net/minecraft/world/entity/boss/enderdragon/phases/DragonStrafePlayerPhase.java
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+++ b/src/main/java/net/minecraft/world/entity/boss/enderdragon/phases/DragonStrafePlayerPhase.java
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@@ -79,6 +79,7 @@ public class DragonStrafePlayerPhase extends AbstractDragonPhaseInstance {
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}
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DragonFireball dragonFireball = new DragonFireball(world, this.dragon, vec34.normalize());
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+ dragonFireball.preserveMotion = true; // Paper - Fix Entity Teleportation and cancel velocity if teleported
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dragonFireball.moveTo(o, p, q, 0.0F, 0.0F);
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if (new com.destroystokyo.paper.event.entity.EnderDragonShootFireballEvent((org.bukkit.entity.EnderDragon) dragon.getBukkitEntity(), (org.bukkit.entity.DragonFireball) dragonFireball.getBukkitEntity()).callEvent()) // Paper - EnderDragon Events
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world.addFreshEntity(dragonFireball);
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diff --git a/src/main/java/net/minecraft/world/level/BaseSpawner.java b/src/main/java/net/minecraft/world/level/BaseSpawner.java
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index 56dbe701a93eb9f1309bec92e5d3b310860a4dc5..1b6ec72f59504d2f420d6d5dcbed4d3b9115e3d8 100644
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--- a/src/main/java/net/minecraft/world/level/BaseSpawner.java
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+++ b/src/main/java/net/minecraft/world/level/BaseSpawner.java
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@@ -164,6 +164,7 @@ public abstract class BaseSpawner {
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return;
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}
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+ entity.preserveMotion = true; // Paper - Fix Entity Teleportation and cancel velocity if teleported; preserve entity motion from tag
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entity.moveTo(entity.getX(), entity.getY(), entity.getZ(), randomsource.nextFloat() * 360.0F, 0.0F);
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if (entity instanceof Mob) {
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Mob entityinsentient = (Mob) entity;
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diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java
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index ec122fa4e443290ff973797740172e07f8e736ca..609c768ba4d22e346acbc9422ce41e3b887fadb1 100644
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--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java
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+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java
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@@ -241,7 +241,7 @@ public abstract class CraftEntity implements org.bukkit.entity.Entity {
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}
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// entity.setLocation() throws no event, and so cannot be cancelled
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- this.entity.absMoveTo(location.getX(), location.getY(), location.getZ(), location.getYaw(), location.getPitch());
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+ entity.moveTo(location.getX(), location.getY(), location.getZ(), location.getYaw(), location.getPitch()); // Paper - use proper moveTo, as per vanilla teleporting
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// SPIGOT-619: Force sync head rotation also
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this.entity.setYHeadRot(location.getYaw());
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diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftLivingEntity.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftLivingEntity.java
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index 5beee554567d36f2a3b871cf6ec3ecb3d2353592..db15382f35464de43a2fe0a41aca070a8c834777 100644
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--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftLivingEntity.java
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+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftLivingEntity.java
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@@ -603,6 +603,7 @@ public class CraftLivingEntity extends CraftEntity implements LivingEntity {
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}
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((AbstractHurtingProjectile) launch).projectileSource = this;
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+ launch.preserveMotion = true; // Paper - Fix Entity Teleportation and cancel velocity if teleported
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launch.moveTo(location.getX(), location.getY(), location.getZ(), location.getYaw(), location.getPitch());
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} else if (LlamaSpit.class.isAssignableFrom(projectile)) {
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Location location = this.getEyeLocation();
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