SakuraMC/patches/server/0028-Configure-Entity-Knockback.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Samsuik <40902469+Samsuik@users.noreply.github.com>
Date: Wed, 15 Nov 2023 20:52:56 +0000
Subject: [PATCH] Configure Entity Knockback


diff --git a/src/main/java/net/minecraft/world/entity/LivingEntity.java b/src/main/java/net/minecraft/world/entity/LivingEntity.java
index e6b6987b46294a96f10d3aa56e8bdc4e25a4c9bf..daf37223c47f30f6da23a996c8b0473e473cbba2 100644
--- a/src/main/java/net/minecraft/world/entity/LivingEntity.java
+++ b/src/main/java/net/minecraft/world/entity/LivingEntity.java
@@ -1604,7 +1604,7 @@ public abstract class LivingEntity extends Entity implements Attackable {
                     }
                     // Paper end - Check distance in entity interactions
 
-                    this.knockback(0.4000000059604645D, d0, d1, entity1, entity1 == null ? io.papermc.paper.event.entity.EntityKnockbackEvent.Cause.DAMAGE : io.papermc.paper.event.entity.EntityKnockbackEvent.Cause.ENTITY_ATTACK); // CraftBukkit // Paper - knockback events
+                    this.knockback((float) this.level().sakuraConfig().players.knockback.baseKnockback, d0, d1, entity1, entity1 == null ? io.papermc.paper.event.entity.EntityKnockbackEvent.Cause.DAMAGE : io.papermc.paper.event.entity.EntityKnockbackEvent.Cause.ENTITY_ATTACK); // CraftBukkit // Paper - knockback events // Sakura - configure entity knockback
                     if (!flag) {
                         this.indicateDamage(d0, d1);
                     }
@@ -1674,7 +1674,7 @@ public abstract class LivingEntity extends Entity implements Attackable {
     }
 
     protected void blockedByShield(LivingEntity target) {
-        target.knockback(0.5D, target.getX() - this.getX(), target.getZ() - this.getZ(), this, io.papermc.paper.event.entity.EntityKnockbackEvent.Cause.SHIELD_BLOCK); // CraftBukkit // Paper - fix attacker & knockback events
+        target.knockback((float) this.level().sakuraConfig().players.knockback.shieldHitKnockback, target.getX() - this.getX(), target.getZ() - this.getZ(), this, io.papermc.paper.event.entity.EntityKnockbackEvent.Cause.SHIELD_BLOCK); // CraftBukkit // Paper - fix attacker & knockback events // Sakura - configure entity knockback
     }
 
     private boolean checkTotemDeathProtection(DamageSource source) {
@@ -2024,7 +2024,7 @@ 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
-        d0 *= 1.0D - this.getAttributeValue(Attributes.KNOCKBACK_RESISTANCE);
+        d0 *= 1.0D - this.getAttributeValue(Attributes.KNOCKBACK_RESISTANCE) * this.level().sakuraConfig().players.knockback.knockbackResistanceModifier; // Sakura - configure entity knockback
         if (true || d0 > 0.0D) { // CraftBukkit - Call event even when force is 0
             //this.hasImpulse = true; // CraftBukkit - Move down
 
@@ -2035,9 +2035,21 @@ public abstract class LivingEntity extends Entity implements Attackable {
             }
 
             Vec3 vec3d1 = (new Vec3(d1, 0.0D, d2)).normalize().scale(d0);
+            // Sakura start - configure entity knockback
+            double velocityX = vec3d.x / 2.0D - vec3d1.x;
+            double velocityY = vec3d.y / 2.0D + this.level().sakuraConfig().players.knockback.knockbackVertical.or(d0);
+            double velocityZ = vec3d.z / 2.0D - vec3d1.z;
+
+            // this.onGround() ? Math.min(0.4D, vec3d.y / 2.0D + d0) : vec3d.y
+            if (!this.level().sakuraConfig().players.knockback.verticalKnockbackRequireGround || this.onGround()) {
+                velocityY = Math.min(this.level().sakuraConfig().players.knockback.knockbackVerticalLimit, velocityY);
+            } else {
+                velocityY = vec3d.y;
+            }
+            // Sakura end - configure entity knockback
 
             // Paper start - knockback events
-            Vec3 finalVelocity = new Vec3(vec3d.x / 2.0D - vec3d1.x, this.onGround() ? Math.min(0.4D, vec3d.y / 2.0D + d0) : vec3d.y, vec3d.z / 2.0D - vec3d1.z);
+            Vec3 finalVelocity = new Vec3(velocityX, velocityY, velocityZ); // Sakura - configure entity knockback
             Vec3 diff = finalVelocity.subtract(vec3d);
             io.papermc.paper.event.entity.EntityKnockbackEvent event = CraftEventFactory.callEntityKnockbackEvent((org.bukkit.craftbukkit.entity.CraftLivingEntity) this.getBukkitEntity(), attacker, attacker, cause, d0, diff);
             // Paper end - knockback events
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 c3e90356ab409f408b767618db718e3926edf8d1..e50b64ba18fe8a4536b6f8aadca93064cd9f47f7 100644
--- a/src/main/java/net/minecraft/world/entity/player/Player.java
+++ b/src/main/java/net/minecraft/world/entity/player/Player.java
@@ -197,6 +197,7 @@ public abstract class Player extends LivingEntity {
     private int currentImpulseContextResetGraceTime;
     public boolean affectsSpawning = true; // Paper - Affects Spawning API
     public net.kyori.adventure.util.TriState flyingFallDamage = net.kyori.adventure.util.TriState.NOT_SET; // Paper - flying fall damage
+    private long lastSprintKnockback = -1; // Sakura - configure entity knockback
 
     // CraftBukkit start
     public boolean fauxSleeping;
@@ -1261,7 +1262,7 @@ public abstract class Player extends LivingEntity {
                     boolean flag = f2 > 0.9F;
                     boolean flag1;
 
-                    if (this.isSprinting() && flag) {
+                    if (this.isSprinting() && (!this.level().sakuraConfig().players.knockback.sprinting.requireFullAttack || flag)) { // Sakura - configure entity knockback
                         sendSoundEffect(this, this.getX(), this.getY(), this.getZ(), SoundEvents.PLAYER_ATTACK_KNOCKBACK, this.getSoundSource(), 1.0F, 1.0F); // Paper - send while respecting visibility
                         flag1 = true;
                     } else {
@@ -1304,7 +1305,21 @@ public abstract class Player extends LivingEntity {
                         float f5 = this.getKnockback(target, damagesource) + (flag1 ? 1.0F : 0.0F);
 
                         if (f5 > 0.0F) {
-                            if (target instanceof LivingEntity) {
+                            // Sakura start - configure entity knockback; extra sprinting knockback
+                            long millis = System.currentTimeMillis();
+                            long sinceLastKnockback = millis - this.lastSprintKnockback;
+                            if (flag1) { // attackHasExtraKnockback
+                                double knockbackToApply = 0.0;
+                                if (sinceLastKnockback >= this.level().sakuraConfig().players.knockback.sprinting.knockbackDelay.value().orElse(0)) {
+                                    knockbackToApply = this.level().sakuraConfig().players.knockback.sprinting.extraKnockback;
+                                    this.lastSprintKnockback = millis;
+                                }
+                                f5 = (f5 - 1.0f) + ((float) knockbackToApply * 2.0f);
+                            }
+                            if (f5 == 0.0f) {
+                                // required
+                            } else if (target instanceof LivingEntity) {
+                                // Sakura end - configure entity knockback; extra sprinting knockback
                                 LivingEntity entityliving1 = (LivingEntity) target;
 
                                 entityliving1.knockback((double) (f5 * 0.5F), (double) Mth.sin(this.getYRot() * 0.017453292F), (double) (-Mth.cos(this.getYRot() * 0.017453292F)), this, io.papermc.paper.event.entity.EntityKnockbackEvent.Cause.ENTITY_ATTACK); // Paper - knockback events
@@ -1337,7 +1352,7 @@ public abstract class Player extends LivingEntity {
                                         continue;
                                     }
                                     // CraftBukkit end
-                                    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
+                                    entityliving2.knockback((float) this.level().sakuraConfig().players.knockback.sweepingEdgeKnockback, (double) Mth.sin(this.getYRot() * 0.017453292F), (double) (-Mth.cos(this.getYRot() * 0.017453292F)), this, io.papermc.paper.event.entity.EntityKnockbackEvent.Cause.SWEEP_ATTACK); // Sakura - configure entity knockback // CraftBukkit // Paper - knockback events
                                     // entityliving2.hurt(damagesource, f7); // CraftBukkit - moved up
                                     Level world = this.level();
 
diff --git a/src/main/java/net/minecraft/world/entity/projectile/FishingHook.java b/src/main/java/net/minecraft/world/entity/projectile/FishingHook.java
index 4daa69c6be6d48563e30343a7e40e4da9ec7e5ad..c563f71fb79990771d032b8044b8f676d8d21058 100644
--- a/src/main/java/net/minecraft/world/entity/projectile/FishingHook.java
+++ b/src/main/java/net/minecraft/world/entity/projectile/FishingHook.java
@@ -304,6 +304,12 @@ public class FishingHook extends Projectile {
             this.setHookedEntity(entityHitResult.getEntity());
         }
 
+        // Sakura start - configure entity knockback
+        if (this.level().sakuraConfig().players.knockback.fishingHooksApplyKnockback) {
+            Entity entity = entityHitResult.getEntity();
+            entity.hurt(this.damageSources().thrown(this, this.getOwner()), 0.0f);
+        }
+        // Sakura end - configure entity knockback
     }
 
     @Override