Purpur/patches/server/0142-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 7aed16c2ab8cef0b7d0eef4b8b5e0845d45b79ab..5d95ff124cfccb3d95e149a5e7cc63bef03ca471 100644
--- a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
+++ b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
@@ -1592,6 +1592,13 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Ser
                                     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();
@@ -1625,6 +1632,12 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Ser
     }
     // 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 32bf8264fecb8873f3ffa0e57a4bb48b5517fb77..0f56c60962b9c61c72d05edc7d9b10e93a119329 100644
--- a/src/main/java/net/minecraft/world/damagesource/DamageSource.java
+++ b/src/main/java/net/minecraft/world/damagesource/DamageSource.java
@@ -46,6 +46,12 @@ public class DamageSource {
             return getLocalizedDeathMessage(org.purpurmc.purpur.PurpurConfig.deathMsgStonecutter, entity);
         }
     }).bypassArmor();
+    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;
diff --git a/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java b/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
index 8bc029dcd80452678eead24eaca867ca9afcb5da..361bd8edcc6e6d0fbac958e3ec91d74a622d630a 100644
--- a/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
+++ b/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
@@ -1134,6 +1134,10 @@ 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 1eb8d599ebb70313fda467d943888f137b1fa745..994047373148cd23758998a3d161c6dc9e2b5349 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);
@@ -187,11 +188,14 @@ 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 deathMsgStonecutter = "<player> has sawed themself in half";
+    public static String deathMsgRunWithScissors = "<player> slipped and fell on their shears";
     private static void deathMessages() {
         deathMsgStonecutter = getString("settings.messages.death-message.stonecutter", deathMsgStonecutter);
+        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 cdff9baf10df1f572de881f8cb79f9ebe7261903..3d7af5c4d09422bb528e244ab3ee6dff484d4d25 100644
--- a/src/main/java/org/purpurmc/purpur/PurpurWorldConfig.java
+++ b/src/main/java/org/purpurmc/purpur/PurpurWorldConfig.java
@@ -191,6 +191,8 @@ 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 -> {
@@ -228,6 +230,8 @@ 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;