From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: William Blake Galbreath <blake.galbreath@gmail.com>
Date: Sun, 23 Aug 2020 20:59:00 +0200
Subject: [PATCH] Climbing should not bypass cramming gamerule


diff --git a/src/main/java/net/minecraft/world/entity/Entity.java b/src/main/java/net/minecraft/world/entity/Entity.java
index 0764f5eaaa5a13e1e9b98a83bfb32e8eb1278f23..7b4c877d6c613e1c40618bc95a65672ec7a31deb 100644
--- a/src/main/java/net/minecraft/world/entity/Entity.java
+++ b/src/main/java/net/minecraft/world/entity/Entity.java
@@ -2080,6 +2080,12 @@ public abstract class Entity implements SyncedDataHolder, Nameable, EntityAccess
     }
 
     public boolean isPushable() {
+        // Paper start - Climbing should not bypass cramming gamerule
+        return isCollidable(false);
+    }
+
+    public boolean isCollidable(boolean ignoreClimbing) {
+        // Paper end - Climbing should not bypass cramming gamerule
         return false;
     }
 
diff --git a/src/main/java/net/minecraft/world/entity/EntitySelector.java b/src/main/java/net/minecraft/world/entity/EntitySelector.java
index ee4495b67c46cf1282cdd6ad15b224b0b7b10bfb..e382a29b441b656f35bc24cb90f95cb4def433d2 100644
--- a/src/main/java/net/minecraft/world/entity/EntitySelector.java
+++ b/src/main/java/net/minecraft/world/entity/EntitySelector.java
@@ -46,11 +46,16 @@ public final class EntitySelector {
     }
 
     public static Predicate<Entity> pushableBy(Entity entity) {
+        // Paper start - Climbing should not bypass cramming gamerule
+        return pushable(entity, false);
+    }
+    public static Predicate<Entity> pushable(Entity entity, boolean ignoreClimbing) {
+        // Paper end - Climbing should not bypass cramming gamerule
         PlayerTeam scoreboardteam = entity.getTeam();
         Team.CollisionRule scoreboardteambase_enumteampush = scoreboardteam == null ? Team.CollisionRule.ALWAYS : scoreboardteam.getCollisionRule();
 
         return (Predicate) (scoreboardteambase_enumteampush == Team.CollisionRule.NEVER ? Predicates.alwaysFalse() : EntitySelector.NO_SPECTATORS.and((entity1) -> {
-            if (!entity1.canCollideWithBukkit(entity) || !entity.canCollideWithBukkit(entity1)) { // CraftBukkit - collidable API
+            if (!entity1.isCollidable(ignoreClimbing) || !entity1.canCollideWithBukkit(entity) || !entity.canCollideWithBukkit(entity1)) { // CraftBukkit - collidable API // Paper - Climbing should not bypass cramming gamerule
                 return false;
             } else if (entity.level().isClientSide && (!(entity1 instanceof Player) || !((Player) entity1).isLocalPlayer())) {
                 return false;
diff --git a/src/main/java/net/minecraft/world/entity/LivingEntity.java b/src/main/java/net/minecraft/world/entity/LivingEntity.java
index ef2240b476cc994618ea002b302b537a5d70c799..c7ead86c5048381c97d01a09ac8a5a84cd93c5db 100644
--- a/src/main/java/net/minecraft/world/entity/LivingEntity.java
+++ b/src/main/java/net/minecraft/world/entity/LivingEntity.java
@@ -3573,7 +3573,7 @@ public abstract class LivingEntity extends Entity implements Attackable {
                 return;
             }
             // Paper end - don't run getEntities if we're not going to use its result
-            List<Entity> list = this.level().getEntities((Entity) this, this.getBoundingBox(), EntitySelector.pushableBy(this));
+            List<Entity> list = this.level().getEntities((Entity) this, this.getBoundingBox(), EntitySelector.pushable(this, this.level().paperConfig().collisions.fixClimbingBypassingCrammingRule)); // Paper - Climbing should not bypass cramming gamerule
 
             if (!list.isEmpty()) {
                 // Paper - don't run getEntities if we're not going to use its result; moved up
@@ -3765,9 +3765,16 @@ public abstract class LivingEntity extends Entity implements Attackable {
         return !this.isRemoved() && this.collides; // CraftBukkit
     }
 
+    // Paper start - Climbing should not bypass cramming gamerule
     @Override
     public boolean isPushable() {
-        return this.isAlive() && !this.isSpectator() && !this.onClimbable() && this.collides; // CraftBukkit
+        return this.isCollidable(this.level().paperConfig().collisions.fixClimbingBypassingCrammingRule);
+    }
+
+    @Override
+    public boolean isCollidable(boolean ignoreClimbing) {
+        return this.isAlive() && !this.isSpectator() && (ignoreClimbing || !this.onClimbable()) && this.collides; // CraftBukkit
+        // Paper end - Climbing should not bypass cramming gamerule
     }
 
     // CraftBukkit start - collidable API
diff --git a/src/main/java/net/minecraft/world/entity/ambient/Bat.java b/src/main/java/net/minecraft/world/entity/ambient/Bat.java
index 934fa26b8f347b8b2d90f79370b62165c0cdc312..dc27ddf5131e7398a5390a5187261d4c7fb6ccaa 100644
--- a/src/main/java/net/minecraft/world/entity/ambient/Bat.java
+++ b/src/main/java/net/minecraft/world/entity/ambient/Bat.java
@@ -88,7 +88,7 @@ public class Bat extends AmbientCreature {
     }
 
     @Override
-    public boolean isPushable() {
+    public boolean isCollidable(boolean ignoreClimbing) { // Paper - Climbing should not bypass cramming gamerule
         return false;
     }
 
diff --git a/src/main/java/net/minecraft/world/entity/animal/Parrot.java b/src/main/java/net/minecraft/world/entity/animal/Parrot.java
index 12b2267cba476547d510d9161b25a28f4f5c798e..97931bfd360725945ab9606ff698b518ae101076 100644
--- a/src/main/java/net/minecraft/world/entity/animal/Parrot.java
+++ b/src/main/java/net/minecraft/world/entity/animal/Parrot.java
@@ -362,8 +362,8 @@ public class Parrot extends ShoulderRidingEntity implements VariantHolder<Parrot
     }
 
     @Override
-    public boolean isPushable() {
-        return super.isPushable(); // CraftBukkit - collidable API
+    public boolean isCollidable(boolean ignoreClimbing) { // Paper - Climbing should not bypass cramming gamerule
+        return super.isCollidable(ignoreClimbing); // CraftBukkit - collidable API // Paper - Climbing should not bypass cramming gamerule
     }
 
     @Override
diff --git a/src/main/java/net/minecraft/world/entity/animal/horse/AbstractHorse.java b/src/main/java/net/minecraft/world/entity/animal/horse/AbstractHorse.java
index 45ba002e23258ef734012ae81b2c4c9e92d863fb..affa2e133611b7a045a99bac801398263d114ba7 100644
--- a/src/main/java/net/minecraft/world/entity/animal/horse/AbstractHorse.java
+++ b/src/main/java/net/minecraft/world/entity/animal/horse/AbstractHorse.java
@@ -356,7 +356,7 @@ public abstract class AbstractHorse extends Animal implements ContainerListener,
     }
 
     @Override
-    public boolean isPushable() {
+    public boolean isCollidable(boolean ignoreClimbing) { // Paper - Climbing should not bypass cramming gamerule
         return !this.isVehicle();
     }
 
diff --git a/src/main/java/net/minecraft/world/entity/decoration/ArmorStand.java b/src/main/java/net/minecraft/world/entity/decoration/ArmorStand.java
index cc1189c2d7dc57ba8f29aad4ba5d2a07362bcd5b..5bcb9a53ebebeef4bd6ec2458df4b63002ebd804 100644
--- a/src/main/java/net/minecraft/world/entity/decoration/ArmorStand.java
+++ b/src/main/java/net/minecraft/world/entity/decoration/ArmorStand.java
@@ -349,7 +349,7 @@ public class ArmorStand extends LivingEntity {
     }
 
     @Override
-    public boolean isPushable() {
+    public boolean isCollidable(boolean ignoreClimbing) { // Paper - Climbing should not bypass cramming gamerule
         return false;
     }
 
diff --git a/src/main/java/net/minecraft/world/entity/vehicle/AbstractMinecart.java b/src/main/java/net/minecraft/world/entity/vehicle/AbstractMinecart.java
index 41590a758ae29e35e2d1fd410662888d4cd3fe36..119d6f4ec8ca6867f75f9fd2f1dc46962f16afee 100644
--- a/src/main/java/net/minecraft/world/entity/vehicle/AbstractMinecart.java
+++ b/src/main/java/net/minecraft/world/entity/vehicle/AbstractMinecart.java
@@ -169,7 +169,7 @@ public abstract class AbstractMinecart extends VehicleEntity {
     }
 
     @Override
-    public boolean isPushable() {
+    public boolean isCollidable(boolean ignoreClimbing) { // Paper - Climbing should not bypass cramming gamerule
         return true;
     }
 
diff --git a/src/main/java/net/minecraft/world/entity/vehicle/Boat.java b/src/main/java/net/minecraft/world/entity/vehicle/Boat.java
index 26dd7c9f48f15f66a326901259ee89f4ab911526..2cb535639bff0e867c1b1e845fee6e34bb237044 100644
--- a/src/main/java/net/minecraft/world/entity/vehicle/Boat.java
+++ b/src/main/java/net/minecraft/world/entity/vehicle/Boat.java
@@ -154,7 +154,7 @@ public class Boat extends VehicleEntity implements Leashable, VariantHolder<Boat
     }
 
     @Override
-    public boolean isPushable() {
+    public boolean isCollidable(boolean ignoreClimbing) { // Paper - Climbing should not bypass cramming gamerule
         return true;
     }