PaperMC/patches/server/0217-Vanished-players-don-t-have-rights.patch

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Hugo Manrique <hugmanrique@gmail.com>
Date: Mon, 23 Jul 2018 14:22:26 +0200
Subject: [PATCH] Vanished players don't have rights
diff --git a/src/main/java/net/minecraft/world/entity/projectile/Projectile.java b/src/main/java/net/minecraft/world/entity/projectile/Projectile.java
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index a39de724848d6dc796dd99dde5206f20e513fd18..30eb86b52f00cfa61af4f93aca50ffc3547c95e8 100644
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--- a/src/main/java/net/minecraft/world/entity/projectile/Projectile.java
+++ b/src/main/java/net/minecraft/world/entity/projectile/Projectile.java
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@@ -288,6 +288,15 @@ public abstract class Projectile extends Entity implements TraceableEntity {
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} else {
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Entity entity1 = this.getOwner();
+ // Paper start - Cancel hit for vanished players
+ if (entity1 instanceof net.minecraft.server.level.ServerPlayer && entity instanceof net.minecraft.server.level.ServerPlayer) {
+ org.bukkit.entity.Player collided = (org.bukkit.entity.Player) entity.getBukkitEntity();
+ org.bukkit.entity.Player shooter = (org.bukkit.entity.Player) entity1.getBukkitEntity();
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+ if (!shooter.canSee(collided)) {
+ return false;
+ }
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+ }
+ // Paper end - Cancel hit for vanished players
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return entity1 == null || this.leftOwner || !entity1.isPassengerOfSameVehicle(entity);
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}
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}
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diff --git a/src/main/java/net/minecraft/world/item/BlockItem.java b/src/main/java/net/minecraft/world/item/BlockItem.java
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index 6ca74a5cf691ee92c84bd031e875f72440df6b32..cee3f1200af602b5dfd0b27d05eb01826c5bbb1d 100644
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--- a/src/main/java/net/minecraft/world/item/BlockItem.java
+++ b/src/main/java/net/minecraft/world/item/BlockItem.java
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@@ -174,7 +174,8 @@ public class BlockItem extends Item {
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Player entityhuman = context.getPlayer();
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CollisionContext voxelshapecollision = entityhuman == null ? CollisionContext.empty() : CollisionContext.of(entityhuman);
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// CraftBukkit start - store default return
- boolean defaultReturn = (!this.mustSurvive() || state.canSurvive(context.getLevel(), context.getClickedPos())) && context.getLevel().isUnobstructed(state, context.getClickedPos(), voxelshapecollision);
+ Level world = context.getLevel(); // Paper - Cancel hit for vanished players
+ boolean defaultReturn = (!this.mustSurvive() || state.canSurvive(context.getLevel(), context.getClickedPos())) && world.checkEntityCollision(state, entityhuman, voxelshapecollision, context.getClickedPos(), true); // Paper - Cancel hit for vanished players
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org.bukkit.entity.Player player = (context.getPlayer() instanceof ServerPlayer) ? (org.bukkit.entity.Player) context.getPlayer().getBukkitEntity() : null;
BlockCanBuildEvent event = new BlockCanBuildEvent(CraftBlock.at(context.getLevel(), context.getClickedPos()), player, CraftBlockData.fromData(state), defaultReturn);
diff --git a/src/main/java/net/minecraft/world/level/Level.java b/src/main/java/net/minecraft/world/level/Level.java
Updated Upstream (Bukkit/CraftBukkit/Spigot) (#11102) Upstream has released updates that appear to apply and compile correctly. This update has not been tested by PaperMC and as with ANY update, please do your own testing Bukkit Changes: 3a3bea52 SPIGOT-7829: Increase maximum outgoing plugin message size to match Vanilla intention 5cd1c8cb SPIGOT-7831: Add CreatureSpawnEvent.SpawnReason#POTION_EFFECT a8e278f0 SPIGOT-7827: Sync EntityPortalEvent with PlayerPortalEvent since non-players can now create portals 53729d12 Remove spurious ApiStatus.Internal annotation b9f57486 SPIGOT-7799, PR-1039: Expose explosion world interaction in EntityExplodeEvent and BlockExplodeEvent 7983b966 PR-1029: Trial changing a small number of inner enums to classes/interfaces to better support custom values CraftBukkit Changes: 403accd56 SPIGOT-7831: Add CreatureSpawnEvent.SpawnReason#POTION_EFFECT 812761660 Increase outdated build delay bed1e3ff6 SPIGOT-7827: Sync EntityPortalEvent with PlayerPortalEvent since non-players can now create portals 2444c8b23 SPIGOT-7823: Suspicious sand and gravel material are not marked as having gravity correctly aceddcd0b SPIGOT-7820: Enum changes - duplicate method name a0d2d6a84 SPIGOT-7813: Material#isInteractable() always returns false 8fd64b091 SPIGOT-7806: Handle both loot and inventory item drop behaviour in PlayerDeathEvent a4ee40b74 SPIGOT-7799, PR-1436: Expose explosion world interaction in EntityExplodeEvent and BlockExplodeEvent 082aa51c5 PR-1424: Trial changing a small number of inner enums to classes/interfaces to better support custom values 66e78a96b SPIGOT-7815: Consider EntityDamageEvent status for Wolf armor damage Spigot Changes: 5bbef5ad SPIGOT-7834: Modify max value for generic.max_absorption
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index a9227581ec78a56e96dc3a342006e4a649906326..5929b450a26e7c3cf63de3dc1d0e67cb781b24c7 100644
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--- a/src/main/java/net/minecraft/world/level/Level.java
+++ b/src/main/java/net/minecraft/world/level/Level.java
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@@ -265,6 +265,45 @@ public abstract class Level implements LevelAccessor, AutoCloseable {
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this.tileLimiter = new org.spigotmc.TickLimiter(this.spigotConfig.tileMaxTickTime);
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}
+ // Paper start - Cancel hit for vanished players
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+ // ret true if no collision
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+ public final boolean checkEntityCollision(BlockState data, Entity source, net.minecraft.world.phys.shapes.CollisionContext voxelshapedcollision,
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+ BlockPos position, boolean checkCanSee) {
+ // Copied from IWorldReader#a(IBlockData, BlockPosition, VoxelShapeCollision) & EntityAccess#a(Entity, VoxelShape)
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+ net.minecraft.world.phys.shapes.VoxelShape voxelshape = data.getCollisionShape(this, position, voxelshapedcollision);
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+ if (voxelshape.isEmpty()) {
+ return true;
+ }
+
+ voxelshape = voxelshape.move((double) position.getX(), (double) position.getY(), (double) position.getZ());
+ if (voxelshape.isEmpty()) {
+ return true;
+ }
+
+ List<Entity> entities = this.getEntities(null, voxelshape.bounds());
+ for (int i = 0, len = entities.size(); i < len; ++i) {
+ Entity entity = entities.get(i);
+
+ if (checkCanSee && source instanceof net.minecraft.server.level.ServerPlayer && entity instanceof net.minecraft.server.level.ServerPlayer
+ && !((net.minecraft.server.level.ServerPlayer) source).getBukkitEntity().canSee(((net.minecraft.server.level.ServerPlayer) entity).getBukkitEntity())) {
+ continue;
+ }
+
+ // !entity1.dead && entity1.i && (entity == null || !entity1.x(entity));
+ // elide the last check since vanilla calls with entity = null
+ // only we care about the source for the canSee check
+ if (entity.isRemoved() || !entity.blocksBuilding) {
+ continue;
+ }
+
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+ if (net.minecraft.world.phys.shapes.Shapes.joinIsNotEmpty(voxelshape, net.minecraft.world.phys.shapes.Shapes.create(entity.getBoundingBox()), net.minecraft.world.phys.shapes.BooleanOp.AND)) {
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+ return false;
+ }
+ }
+
+ return true;
+ }
+ // Paper end - Cancel hit for vanished players
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@Override
public boolean isClientSide() {
return this.isClientSide;
diff --git a/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java b/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
index 9b6607700ed23b97755a2171a49b22d498a60626..0613bdf3c2325d5cab64783af7211b07fcf5124a 100644
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--- a/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
+++ b/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
@@ -1329,6 +1329,14 @@ public class CraftEventFactory {
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Projectile projectile = (Projectile) entity.getBukkitEntity();
org.bukkit.entity.Entity collided = position.getEntity().getBukkitEntity();
com.destroystokyo.paper.event.entity.ProjectileCollideEvent event = new com.destroystokyo.paper.event.entity.ProjectileCollideEvent(projectile, collided);
+
+ if (projectile.getShooter() instanceof Player && collided instanceof Player) {
+ if (!((Player) projectile.getShooter()).canSee((Player) collided)) {
+ event.setCancelled(true);
+ return event;
+ }
+ }
+
Bukkit.getPluginManager().callEvent(event);
return event;
}