Purpur/patches/server/0140-Dont-run-with-scissors.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: JustDoom <justdoomdev@gmail.com>
Date: Fri, 5 Mar 2021 14:23:16 -0500
Subject: [PATCH] Dont run with scissors!


diff --git a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
index 1cee1e7f228d52af4f166d122f21ad37c3704a46..c914fbbb8b63506e345c747ff5ef0bbbb471c9eb 100644
--- a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
+++ b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
@@ -1702,6 +1702,13 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Tic
                                     this.player.resetFallDistance();
                                 }
 
+                                // Purpur Start
+                                if (this.player.level.purpurConfig.dontRunWithScissors && this.player.isSprinting() && (isScissor(this.player.getItemInHand(InteractionHand.MAIN_HAND)) || isScissor(this.player.getItemInHand(InteractionHand.OFF_HAND))) && (int) (Math.random() * 10) == 0) {
+                                    this.player.hurt(net.minecraft.world.damagesource.DamageSource.SCISSORS, (float) this.player.level.purpurConfig.scissorsRunningDamage);
+                                    if (!org.purpurmc.purpur.PurpurConfig.dontRunWithScissors.isBlank()) this.player.sendActionBarMessage(org.purpurmc.purpur.PurpurConfig.dontRunWithScissors);
+                                }
+                                // Purpur End
+
                                 this.player.checkMovementStatistics(this.player.getX() - d3, this.player.getY() - d4, this.player.getZ() - d5);
                                 this.lastGoodX = this.player.getX();
                                 this.lastGoodY = this.player.getY();
@@ -1735,6 +1742,12 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Tic
     }
     // Paper end - optimise out extra getCubes
 
+    // Purpur start
+    public boolean isScissor(ItemStack stack) {
+        return stack.is(Items.SHEARS) && (stack.getTag() == null || stack.getTag().getInt("CustomModelData") == 0);
+    }
+    // Purpur end
+
     private boolean isPlayerCollidingWithAnythingNew(LevelReader world, AABB box) {
         Iterable<VoxelShape> iterable = world.getCollisions(this.player, this.player.getBoundingBox().deflate(9.999999747378752E-6D));
         VoxelShape voxelshape = Shapes.create(box.deflate(9.999999747378752E-6D));
diff --git a/src/main/java/net/minecraft/world/damagesource/DamageSource.java b/src/main/java/net/minecraft/world/damagesource/DamageSource.java
index c4088446d30c3b25cf196f51fd394cd056be0495..8b03b8e58e16ab9b677ba14cf1d09b417cf369f5 100644
--- a/src/main/java/net/minecraft/world/damagesource/DamageSource.java
+++ b/src/main/java/net/minecraft/world/damagesource/DamageSource.java
@@ -38,6 +38,14 @@ public class DamageSource {
     public static final DamageSource FREEZE = (new DamageSource("freeze")).bypassArmor();
     public static final DamageSource FALLING_STALACTITE = (new DamageSource("fallingStalactite")).damageHelmet();
     public static final DamageSource STALAGMITE = (new DamageSource("stalagmite")).bypassArmor().setIsFall();
+    // Purpur start
+    public static final DamageSource SCISSORS = (new DamageSource("scissors") {
+        @Override
+        public Component getLocalizedDeathMessage(LivingEntity entity) {
+            return getLocalizedDeathMessage(org.purpurmc.purpur.PurpurConfig.deathMsgRunWithScissors, entity);
+        }
+    }).bypassArmor();
+    // Purpur end
     private boolean damageHelmet;
     private boolean bypassArmor;
     private boolean bypassInvul;
diff --git a/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java b/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
index cc0f6a51e10c77928fccf372a45a56aa6f2b298a..f4ca0a9481533befc78cb18c1f9810826f57562c 100644
--- a/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
+++ b/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
@@ -1131,6 +1131,10 @@ public class CraftEventFactory {
             cause = DamageCause.FREEZE;
         } else if (source == DamageSource.GENERIC) {
             cause = DamageCause.CUSTOM;
+        // Purpur start
+        } else if (source == DamageSource.SCISSORS) {
+            cause = DamageCause.SUICIDE;
+        // Purpur end
         }
 
         if (cause != null) {
diff --git a/src/main/java/org/purpurmc/purpur/PurpurConfig.java b/src/main/java/org/purpurmc/purpur/PurpurConfig.java
index 27794670b54f1a96e4e82ed23ab0769a0506b52a..c2bfd97e11e887d7a112ba024be6048ac3d46bee 100644
--- a/src/main/java/org/purpurmc/purpur/PurpurConfig.java
+++ b/src/main/java/org/purpurmc/purpur/PurpurConfig.java
@@ -177,6 +177,7 @@ public class PurpurConfig {
     public static String demoCommandOutput = "<green>%s has been shown the demo screen";
     public static String pingCommandOutput = "<green>%s's ping is %sms";
     public static String tpsbarCommandOutput = "<green>Tpsbar toggled <onoff> for <target>";
+    public static String dontRunWithScissors = "<red><italic>Don't run with scissors!";
     private static void messages() {
         cannotRideMob = getString("settings.messages.cannot-ride-mob", cannotRideMob);
         afkBroadcastAway = getString("settings.messages.afk-broadcast-away", afkBroadcastAway);
@@ -187,6 +188,12 @@ public class PurpurConfig {
         demoCommandOutput = getString("settings.messages.demo-command-output", demoCommandOutput);
         pingCommandOutput = getString("settings.messages.ping-command-output", pingCommandOutput);
         tpsbarCommandOutput = getString("settings.messages.tpsbar-command-output", tpsbarCommandOutput);
+        dontRunWithScissors = getString("settings.messages.dont-run-with-scissors", dontRunWithScissors);
+    }
+
+    public static String deathMsgRunWithScissors = "<player> slipped and fell on their shears";
+    private static void deathMessages() {
+        deathMsgRunWithScissors = getString("settings.messages.death-message.run-with-scissors", deathMsgRunWithScissors);
     }
 
     public static String serverModName = "Purpur";
diff --git a/src/main/java/org/purpurmc/purpur/PurpurWorldConfig.java b/src/main/java/org/purpurmc/purpur/PurpurWorldConfig.java
index 3624304329d0a6728c0e4981bd9dcfb350edaab5..2e15e592bbc13f4aca99745dd068b12d5f8a253c 100644
--- a/src/main/java/org/purpurmc/purpur/PurpurWorldConfig.java
+++ b/src/main/java/org/purpurmc/purpur/PurpurWorldConfig.java
@@ -199,6 +199,8 @@ public class PurpurWorldConfig {
     public List<Item> itemImmuneToExplosion = new ArrayList<>();
     public List<Item> itemImmuneToFire = new ArrayList<>();
     public List<Item> itemImmuneToLightning = new ArrayList<>();
+    public boolean dontRunWithScissors = false;
+    public double scissorsRunningDamage = 1D;
     private void itemSettings() {
         itemImmuneToCactus.clear();
         getList("gameplay-mechanics.item.immune.cactus", new ArrayList<>()).forEach(key -> {
@@ -236,6 +238,8 @@ public class PurpurWorldConfig {
             Item item = Registry.ITEM.get(new ResourceLocation(key.toString()));
             if (item != Items.AIR) itemImmuneToLightning.add(item);
         });
+        dontRunWithScissors = getBoolean("gameplay-mechanics.item.shears.damage-if-sprinting", dontRunWithScissors);
+        scissorsRunningDamage = getDouble("gameplay-mechanics.item.shears.sprinting-damage", scissorsRunningDamage);
     }
 
     public double minecartMaxSpeed = 0.4D;