From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Fourmisain <8464472+Fourmisain@users.noreply.github.com>
Date: Fri, 5 Mar 2021 17:42:35 -0500
Subject: [PATCH] One Punch Man!

inspired by https://modrinth.com/mod/creative-one-punch

diff --git a/src/main/java/net/minecraft/world/entity/LivingEntity.java b/src/main/java/net/minecraft/world/entity/LivingEntity.java
index fc560ddef3542f9bf566917c3af9072857f1bd04..d76e8cf2a2d48548b0ad33c78dbf435b61bf91c4 100644
--- a/src/main/java/net/minecraft/world/entity/LivingEntity.java
+++ b/src/main/java/net/minecraft/world/entity/LivingEntity.java
@@ -1428,6 +1428,24 @@ public abstract class LivingEntity extends Entity implements Attackable {
                 this.stopSleeping();
             }
 
+            // Purpur start
+            if (source.getEntity() instanceof net.minecraft.world.entity.player.Player player && source.getEntity().level().purpurConfig.creativeOnePunch && !source.is(DamageTypeTags.IS_PROJECTILE)) {
+                if (player.isCreative()) {
+                    org.apache.commons.lang3.mutable.MutableDouble attackDamage = new org.apache.commons.lang3.mutable.MutableDouble();
+                    player.getMainHandItem().forEachModifier(EquipmentSlot.MAINHAND, (attributeHolder, attributeModifier) -> {
+                        if (attributeModifier.operation() == AttributeModifier.Operation.ADD_VALUE) {
+                            attackDamage.addAndGet(attributeModifier.amount());
+                        }
+                    });
+
+                    if (attackDamage.doubleValue() == 0.0D) {
+                        // One punch!
+                        amount = 9999F;
+                    }
+                }
+            }
+            // Purpur end
+
             this.noActionTime = 0;
             float f1 = amount;
             boolean flag = amount > 0.0F && this.isDamageSourceBlocked(source); // Copied from below
diff --git a/src/main/java/org/purpurmc/purpur/PurpurWorldConfig.java b/src/main/java/org/purpurmc/purpur/PurpurWorldConfig.java
index 7ace30d634600be4e2a71dce12645db48b22e67d..74829c202ab6c44da26d025635e6a429777ab69c 100644
--- a/src/main/java/org/purpurmc/purpur/PurpurWorldConfig.java
+++ b/src/main/java/org/purpurmc/purpur/PurpurWorldConfig.java
@@ -327,6 +327,7 @@ public class PurpurWorldConfig {
     public boolean teleportIfOutsideBorder = false;
     public boolean totemOfUndyingWorksInInventory = false;
     public boolean playerFixStuckPortal = false;
+    public boolean creativeOnePunch = false;
     private void playerSettings() {
         if (PurpurConfig.version < 19) {
             boolean oldVal = getBoolean("gameplay-mechanics.player.idle-timeout.mods-target", idleTimeoutTargetPlayer);
@@ -343,6 +344,7 @@ public class PurpurWorldConfig {
         teleportIfOutsideBorder = getBoolean("gameplay-mechanics.player.teleport-if-outside-border", teleportIfOutsideBorder);
         totemOfUndyingWorksInInventory = getBoolean("gameplay-mechanics.player.totem-of-undying-works-in-inventory", totemOfUndyingWorksInInventory);
         playerFixStuckPortal = getBoolean("gameplay-mechanics.player.fix-stuck-in-portal", playerFixStuckPortal);
+        creativeOnePunch = getBoolean("gameplay-mechanics.player.one-punch-in-creative", creativeOnePunch);
     }
 
     public boolean silkTouchEnabled = false;