From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Phoenix616 <max@themoep.de>
Date: Sun, 20 Jun 2021 16:35:42 +0100
Subject: [PATCH] Don't apply cramming damage to players

It does not make a lot of sense to damage players if they get crammed,
 especially as the usecase of teleporting lots of players to the same
 location isn't too uncommon and killing all those players isn't
 really what one would expect to happen.

For those who really want it a config option is provided.

diff --git a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
index 6ff53e138ea17c3e8283a52251c81d5cdf91ebac..0e7d29dbbdb862dd5876adee26fbba02267e5276 100644
--- a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
+++ b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
@@ -842,5 +842,10 @@ public class PaperWorldConfig {
     private void showSignClickCommandFailureMessagesToPlayer() {
         showSignClickCommandFailureMessagesToPlayer = getBoolean("show-sign-click-command-failure-msgs-to-player", showSignClickCommandFailureMessagesToPlayer);
     }
+
+    public boolean allowPlayerCrammingDamage = false;
+    private void playerCrammingDamage() {
+        allowPlayerCrammingDamage = getBoolean("allow-player-cramming-damage", allowPlayerCrammingDamage);
+    }
 }
 
diff --git a/src/main/java/net/minecraft/server/level/ServerPlayer.java b/src/main/java/net/minecraft/server/level/ServerPlayer.java
index 764ce055a28f355a205c67f60632cac1bd8eb182..ec044cadd268d6e95e975c8bf929825236839db8 100644
--- a/src/main/java/net/minecraft/server/level/ServerPlayer.java
+++ b/src/main/java/net/minecraft/server/level/ServerPlayer.java
@@ -1419,7 +1419,7 @@ public class ServerPlayer extends Player {
 
     @Override
     public boolean isInvulnerableTo(DamageSource damageSource) {
-        return super.isInvulnerableTo(damageSource) || this.isChangingDimension() || this.getAbilities().invulnerable && damageSource == DamageSource.WITHER;
+        return super.isInvulnerableTo(damageSource) || this.isChangingDimension() || this.getAbilities().invulnerable && damageSource == DamageSource.WITHER || !level.paperConfig.allowPlayerCrammingDamage && damageSource == DamageSource.CRAMMING; // Paper - disable player cramming
     }
 
     @Override