From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Dreeam <61569423+Dreeam-qwq@users.noreply.github.com>
Date: Sun, 4 Aug 2024 19:34:29 +0800
Subject: [PATCH] Configurable player knockback zombie


diff --git a/src/main/java/net/minecraft/world/entity/LivingEntity.java b/src/main/java/net/minecraft/world/entity/LivingEntity.java
index 21fbf1f88dbf8e767549a8fd0a7e9a8e0e434d54..042e9075bd1b62f9f25647502aad496a4f474967 100644
--- a/src/main/java/net/minecraft/world/entity/LivingEntity.java
+++ b/src/main/java/net/minecraft/world/entity/LivingEntity.java
@@ -2040,6 +2040,8 @@ public abstract class LivingEntity extends Entity implements Attackable {
     }
 
     public void knockback(double d0, double d1, double d2, @Nullable Entity attacker, io.papermc.paper.event.entity.EntityKnockbackEvent.Cause cause) { // Paper - knockback events
+        if (!canKnockback(attacker, this)) return; // Leaf - Configurable player knockback zombie
+
         d0 *= 1.0D - this.getAttributeValue(Attributes.KNOCKBACK_RESISTANCE);
         if (true || d0 > 0.0D) { // CraftBukkit - Call event even when force is 0
             //this.hasImpulse = true; // CraftBukkit - Move down
@@ -2067,6 +2069,20 @@ public abstract class LivingEntity extends Entity implements Attackable {
         }
     }
 
+    // Leaf start - Configurable player knockback zombie
+    private boolean canKnockback(@Nullable Entity attacker, LivingEntity target) {
+        if (!org.dreeam.leaf.config.modules.gameplay.Knockback.canPlayerKnockbackZombie) {
+            if (attacker instanceof ServerPlayer && target.getType() == EntityType.ZOMBIE) { // Player -> Zombie
+                return false;
+            } else if (attacker instanceof Projectile projectile && projectile.getOwner() instanceof ServerPlayer && target.getType() == EntityType.ZOMBIE) { // Player -> projectile -> Zombie
+                return false;
+            }
+        }
+
+        return true;
+    }
+    // Leaf end - Configurable player knockback zombie
+
     public void indicateDamage(double deltaX, double deltaZ) {}
 
     @Nullable
diff --git a/src/main/java/org/dreeam/leaf/config/modules/gameplay/Knockback.java b/src/main/java/org/dreeam/leaf/config/modules/gameplay/Knockback.java
index 7b434158818834450ea43611e2ab5636917bb938..3499b1e60bde373bff79f007990fdd1a88fa48bf 100644
--- a/src/main/java/org/dreeam/leaf/config/modules/gameplay/Knockback.java
+++ b/src/main/java/org/dreeam/leaf/config/modules/gameplay/Knockback.java
@@ -11,6 +11,7 @@ public class Knockback extends ConfigModules {
 
     public static boolean snowballCanKnockback = false;
     public static boolean eggCanKnockback = false;
+    public static boolean canPlayerKnockbackZombie = true;
 
     @Override
     public void onLoaded() {
@@ -24,5 +25,10 @@ public class Knockback extends ConfigModules {
                         "Make egg can knockback players.",
                         "使鸡蛋可以击退玩家."
                         ));
+        canPlayerKnockbackZombie = config.getBoolean(getBasePath() + ".can-player-knockback-zombie", canPlayerKnockbackZombie,
+                config.pickStringRegionBased(
+                        "Make players can knockback zombie.",
+                        "使玩家可以击退僵尸."
+                        ));
     }
 }