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Paper/patches/server/0833-Implement-PlayerFailMoveEvent.patch
Spottedleaf 8c5b837e05 Rework async chunk api implementation 
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.
2024-11-18 23:00:59 -08:00

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Moulberry <james.jenour@protonmail.com>
Date: Wed, 26 Jul 2023 20:13:31 +0800
Subject: [PATCH] Implement PlayerFailMoveEvent
diff --git a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
index e653dc4ac16fd22674a6c1ba402f8913e0fbb336..2de655df951199c74758578c7f00fa053851b55e 100644
--- a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
+++ b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
@@ -1271,8 +1271,8 @@ public class ServerGamePacketListenerImpl extends ServerCommonPacketListenerImpl
double d0 = ServerGamePacketListenerImpl.clampHorizontal(packet.getX(this.player.getX())); final double toX = d0; // Paper - OBFHELPER
double d1 = ServerGamePacketListenerImpl.clampVertical(packet.getY(this.player.getY())); final double toY = d1; // Paper - OBFHELPER
double d2 = ServerGamePacketListenerImpl.clampHorizontal(packet.getZ(this.player.getZ())); final double toZ = d2; // Paper - OBFHELPER
- float f = Mth.wrapDegrees(packet.getYRot(this.player.getYRot()));
- float f1 = Mth.wrapDegrees(packet.getXRot(this.player.getXRot()));
+ float f = Mth.wrapDegrees(packet.getYRot(this.player.getYRot())); final float toYaw = f; // Paper - OBFHELPER
+ float f1 = Mth.wrapDegrees(packet.getXRot(this.player.getXRot())); final float toPitch = f1; // Paper - OBFHELPER
if (this.player.isPassenger()) {
this.player.absMoveTo(this.player.getX(), this.player.getY(), this.player.getZ(), f, f1);
@@ -1339,8 +1339,14 @@ public class ServerGamePacketListenerImpl extends ServerCommonPacketListenerImpl
}
// Paper start - Prevent moving into unloaded chunks
if (this.player.level().paperConfig().chunks.preventMovingIntoUnloadedChunks && (this.player.getX() != toX || this.player.getZ() != toZ) && !worldserver.areChunksLoadedForMove(this.player.getBoundingBox().expandTowards(new Vec3(toX, toY, toZ).subtract(this.player.position())))) {
- this.internalTeleport(PositionMoveRotation.of(this.player), Collections.emptySet());
- return;
+ // Paper start - Add fail move event
+ io.papermc.paper.event.player.PlayerFailMoveEvent event = fireFailMove(io.papermc.paper.event.player.PlayerFailMoveEvent.FailReason.MOVED_INTO_UNLOADED_CHUNK,
+ toX, toY, toZ, toYaw, toPitch, false);
+ if (!event.isAllowed()) {
+ this.internalTeleport(PositionMoveRotation.of(this.player), Collections.emptySet());
+ return;
+ }
+ // Paper end - Add fail move event
}
// Paper end - Prevent moving into unloaded chunks
@@ -1349,9 +1355,16 @@ public class ServerGamePacketListenerImpl extends ServerCommonPacketListenerImpl
if (d10 - d9 > Math.max(f2, Math.pow((double) (org.spigotmc.SpigotConfig.movedTooQuicklyMultiplier * (float) i * speed), 2))) {
// CraftBukkit end
- ServerGamePacketListenerImpl.LOGGER.warn("{} moved too quickly! {},{},{}", new Object[]{this.player.getName().getString(), d6, d7, d8});
- this.teleport(this.player.getX(), this.player.getY(), this.player.getZ(), this.player.getYRot(), this.player.getXRot());
- return;
+ // Paper start - Add fail move event
+ io.papermc.paper.event.player.PlayerFailMoveEvent event = fireFailMove(io.papermc.paper.event.player.PlayerFailMoveEvent.FailReason.MOVED_TOO_QUICKLY,
+ toX, toY, toZ, toYaw, toPitch, true);
+ if (!event.isAllowed()) {
+ if (event.getLogWarning())
+ ServerGamePacketListenerImpl.LOGGER.warn("{} moved too quickly! {},{},{}", new Object[]{this.player.getName().getString(), d6, d7, d8});
+ this.teleport(this.player.getX(), this.player.getY(), this.player.getZ(), this.player.getYRot(), this.player.getXRot());
+ return;
+ }
+ // Paper end - Add fail move event
}
}
}
@@ -1413,14 +1426,31 @@ public class ServerGamePacketListenerImpl extends ServerCommonPacketListenerImpl
d8 = d2 - this.player.getZ();
d10 = d6 * d6 + d7 * d7 + d8 * d8;
- boolean flag3 = false;
+ boolean movedWrongly = false; // Paper - Add fail move event; rename
if (!this.player.isChangingDimension() && d10 > org.spigotmc.SpigotConfig.movedWronglyThreshold && !this.player.isSleeping() && !this.player.gameMode.isCreative() && this.player.gameMode.getGameModeForPlayer() != GameType.SPECTATOR) { // Spigot
- flag3 = true;
+ // Paper start - Add fail move event
+ io.papermc.paper.event.player.PlayerFailMoveEvent event = fireFailMove(io.papermc.paper.event.player.PlayerFailMoveEvent.FailReason.MOVED_WRONGLY,
+ toX, toY, toZ, toYaw, toPitch, true);
+ if (!event.isAllowed()) {
+ movedWrongly = true;
+ if (event.getLogWarning())
+ // Paper end
ServerGamePacketListenerImpl.LOGGER.warn("{} moved wrongly!", this.player.getName().getString());
+ } // Paper
}
- if (!this.player.noPhysics && !this.player.isSleeping() && (flag3 && worldserver.noCollision(this.player, axisalignedbb) || this.isPlayerCollidingWithAnythingNew(worldserver, axisalignedbb, d0, d1, d2))) {
+ // Paper start - Add fail move event
+ boolean teleportBack = !this.player.noPhysics && !this.player.isSleeping() && (movedWrongly && worldserver.noCollision(this.player, axisalignedbb) || this.isPlayerCollidingWithAnythingNew(worldserver, axisalignedbb, d0, d1, d2));
+ if (teleportBack) {
+ io.papermc.paper.event.player.PlayerFailMoveEvent event = fireFailMove(io.papermc.paper.event.player.PlayerFailMoveEvent.FailReason.CLIPPED_INTO_BLOCK,
+ toX, toY, toZ, toYaw, toPitch, false);
+ if (event.isAllowed()) {
+ teleportBack = false;
+ }
+ }
+ if (teleportBack) {
+ // Paper end - Add fail move event
this.internalTeleport(d3, d4, d5, f, f1); // CraftBukkit - SPIGOT-1807: Don't call teleport event, when the client thinks the player is falling, because the chunks are not loaded on the client yet.
this.player.doCheckFallDamage(this.player.getX() - d3, this.player.getY() - d4, this.player.getZ() - d5, packet.isOnGround());
} else {
@@ -3535,4 +3565,17 @@ public class ServerGamePacketListenerImpl extends ServerCommonPacketListenerImpl
InteractionResult run(ServerPlayer player, Entity entity, InteractionHand hand);
}
+
+ // Paper start - Add fail move event
+ private io.papermc.paper.event.player.PlayerFailMoveEvent fireFailMove(io.papermc.paper.event.player.PlayerFailMoveEvent.FailReason failReason,
+ double toX, double toY, double toZ, float toYaw, float toPitch, boolean logWarning) {
+ Player player = this.getCraftPlayer();
+ Location from = new Location(player.getWorld(), this.lastPosX, this.lastPosY, this.lastPosZ, this.lastYaw, this.lastPitch);
+ Location to = new Location(player.getWorld(), toX, toY, toZ, toYaw, toPitch);
+ io.papermc.paper.event.player.PlayerFailMoveEvent event = new io.papermc.paper.event.player.PlayerFailMoveEvent(player, failReason,
+ false, logWarning, from, to);
+ event.callEvent();
+ return event;
+ }
+ // Paper end - Add fail move event
}
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