Paper/patches/server/0595-Add-critical-damage-API.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: dodison <kacpik@mapik.eu>
Date: Mon, 26 Jul 2021 17:32:36 +0200
Subject: [PATCH] Add critical damage API


diff --git a/src/main/java/net/minecraft/world/damagesource/DamageSource.java b/src/main/java/net/minecraft/world/damagesource/DamageSource.java
index 20c3cd89deaa0aa9f9b1b60cde5644e49301d2cb..10bee9b217fae9170af9d66dac9741046be1cab6 100644
--- a/src/main/java/net/minecraft/world/damagesource/DamageSource.java
+++ b/src/main/java/net/minecraft/world/damagesource/DamageSource.java
@@ -260,4 +260,18 @@ public class DamageSource {
     public Holder<DamageType> typeHolder() {
         return this.type;
     }
+
+    // Paper start - add critical damage API
+    private boolean critical;
+    public boolean isCritical() {
+        return this.critical;
+    }
+    public DamageSource critical() {
+        return this.critical(true);
+    }
+    public DamageSource critical(boolean critical) {
+        this.critical = critical;
+        return this;
+    }
+    // Paper end - add critical damage API
 }
diff --git a/src/main/java/net/minecraft/world/entity/player/Player.java b/src/main/java/net/minecraft/world/entity/player/Player.java
index c89b7cf63d067895bbd07f43eef467ff1861f625..536a4e3c26e83f359083bde19832a962628244fa 100644
--- a/src/main/java/net/minecraft/world/entity/player/Player.java
+++ b/src/main/java/net/minecraft/world/entity/player/Player.java
@@ -1292,6 +1292,7 @@ public abstract class Player extends LivingEntity {
 
                     flag2 = flag2 && !this.level().paperConfig().entities.behavior.disablePlayerCrits; // Paper - Toggleable player crits
                     if (flag2) {
+                        damagesource = damagesource.critical(true); // Paper start - critical damage API
                         f *= 1.5F;
                     }
 
@@ -1352,7 +1353,7 @@ public abstract class Player extends LivingEntity {
                                     float f7 = this.getEnchantedDamage(entityliving2, f6, damagesource) * f2;
 
                                     // CraftBukkit start - Only apply knockback if the damage hits
-                                    if (entityliving2.hurt(this.damageSources().playerAttack(this).sweep(), f7)) {
+                                    if (entityliving2.hurt(this.damageSources().playerAttack(this).sweep().critical(flag2), f7)) { // Paper - add critical damage API
                                         entityliving2.knockback(0.4000000059604645D, (double) Mth.sin(this.getYRot() * 0.017453292F), (double) (-Mth.cos(this.getYRot() * 0.017453292F)), this, io.papermc.paper.event.entity.EntityKnockbackEvent.Cause.SWEEP_ATTACK); // CraftBukkit // Paper - knockback events
                                     }
                                     // CraftBukkit end
diff --git a/src/main/java/net/minecraft/world/entity/projectile/AbstractArrow.java b/src/main/java/net/minecraft/world/entity/projectile/AbstractArrow.java
index 1f881f71d5698bc7b36bc029287ac8e873a46107..92b630475ef7032c9cae6288b2a0370562e25f57 100644
--- a/src/main/java/net/minecraft/world/entity/projectile/AbstractArrow.java
+++ b/src/main/java/net/minecraft/world/entity/projectile/AbstractArrow.java
@@ -415,6 +415,7 @@ public abstract class AbstractArrow extends Projectile {
             entityliving.setLastHurtMob(entity);
         }
 
+        if (this.isCritArrow()) damagesource = damagesource.critical(); // Paper - add critical damage API
         boolean flag = entity.getType() == EntityType.ENDERMAN;
         int k = entity.getRemainingFireTicks();
 
diff --git a/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java b/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
index f99247b37a6fb04d27611051908364bcde168afa..e0c1eab089fff724e029ed8109a653403e15fc77 100644
--- a/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
+++ b/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
@@ -1065,7 +1065,7 @@ public class CraftEventFactory {
                 return CraftEventFactory.callEntityDamageEvent(source.getDirectBlock(), source.getDirectBlockState(), entity, DamageCause.BLOCK_EXPLOSION, bukkitDamageSource, modifiers, modifierFunctions, cancelled);
             }
             DamageCause damageCause = (damager.getBukkitEntity() instanceof org.bukkit.entity.TNTPrimed) ? DamageCause.BLOCK_EXPLOSION : DamageCause.ENTITY_EXPLOSION;
-            return CraftEventFactory.callEntityDamageEvent(damager, entity, damageCause, bukkitDamageSource, modifiers, modifierFunctions, cancelled);
+            return CraftEventFactory.callEntityDamageEvent(damager, entity, damageCause, bukkitDamageSource, modifiers, modifierFunctions, cancelled, source.isCritical()); // Paper - add critical damage API
         } else if (damager != null || source.getDirectEntity() != null) {
             DamageCause cause = (source.isSweep()) ? DamageCause.ENTITY_SWEEP_ATTACK : DamageCause.ENTITY_ATTACK;
 
@@ -1091,7 +1091,7 @@ public class CraftEventFactory {
                 cause = DamageCause.MAGIC;
             }
 
-            return CraftEventFactory.callEntityDamageEvent(damager, entity, cause, bukkitDamageSource, modifiers, modifierFunctions, cancelled);
+            return CraftEventFactory.callEntityDamageEvent(damager, entity, cause, bukkitDamageSource, modifiers, modifierFunctions, cancelled, source.isCritical()); // Paper - add critical damage API
         } else if (source.is(DamageTypes.FELL_OUT_OF_WORLD)) {
             return CraftEventFactory.callEntityDamageEvent(source.getDirectBlock(), source.getDirectBlockState(), entity, DamageCause.VOID, bukkitDamageSource, modifiers, modifierFunctions, cancelled);
         } else if (source.is(DamageTypes.LAVA)) {
@@ -1149,13 +1149,13 @@ public class CraftEventFactory {
             cause = DamageCause.CUSTOM;
         }
 
-        return CraftEventFactory.callEntityDamageEvent((Entity) null, entity, cause, bukkitDamageSource, modifiers, modifierFunctions, cancelled);
+        return CraftEventFactory.callEntityDamageEvent((Entity) null, entity, cause, bukkitDamageSource, modifiers, modifierFunctions, cancelled, source.isCritical()); // Paper - add critical damage API
     }
 
-    private static EntityDamageEvent callEntityDamageEvent(Entity damager, Entity damagee, DamageCause cause, org.bukkit.damage.DamageSource bukkitDamageSource, Map<DamageModifier, Double> modifiers, Map<DamageModifier, Function<? super Double, Double>> modifierFunctions, boolean cancelled) {
+    private static EntityDamageEvent callEntityDamageEvent(Entity damager, Entity damagee, DamageCause cause, org.bukkit.damage.DamageSource bukkitDamageSource, Map<DamageModifier, Double> modifiers, Map<DamageModifier, Function<? super Double, Double>> modifierFunctions, boolean cancelled, boolean critical) { // Paper - add critical damage API
         EntityDamageEvent event;
         if (damager != null) {
-            event = new EntityDamageByEntityEvent(damager.getBukkitEntity(), damagee.getBukkitEntity(), cause, bukkitDamageSource, modifiers, modifierFunctions);
+            event = new EntityDamageByEntityEvent(damager.getBukkitEntity(), damagee.getBukkitEntity(), cause, bukkitDamageSource, modifiers, modifierFunctions, critical);
         } else {
             event = new EntityDamageEvent(damagee.getBukkitEntity(), cause, bukkitDamageSource, modifiers, modifierFunctions);
         }