From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: MrFishCakes <FinlayOxby@outlook.com>
Date: Sun, 2 Jul 2023 00:50:14 +0100
Subject: [PATCH] Shears can defuse TNT

Shears can now defuse TNT. Each world can have a configured chance for the TNT to be defused when right clicking with a set of shears and damage dealt to the shears accordingly. If the TNT is defused then it will drop the TNT item instead and the entity removed from the world no longer existing. All the interaction is handled within the net.minecraft.world.entity.item.PrimedTnt class similar to how it is handled for when sheep are sheared.

By default the option is disabled to avoid breaking any possible vanilla mechanics.

diff --git a/src/main/java/net/minecraft/world/entity/item/PrimedTnt.java b/src/main/java/net/minecraft/world/entity/item/PrimedTnt.java
index 42bd2d9a1528b6210e4dfb56233062fd97c9743b..2a4425d04917b32c7ae5af3e7422c0bafc2aa1c2 100644
--- a/src/main/java/net/minecraft/world/entity/item/PrimedTnt.java
+++ b/src/main/java/net/minecraft/world/entity/item/PrimedTnt.java
@@ -230,4 +230,29 @@ public class PrimedTnt extends Entity implements TraceableEntity {
         return !level().paperConfig().fixes.preventTntFromMovingInWater && super.isPushedByFluid();
     }
     // Paper end - Option to prevent TNT from moving in water
+    // Purpur start - Shears can defuse TNT
+    @Override
+    public net.minecraft.world.InteractionResult interact(net.minecraft.world.entity.player.Player player, net.minecraft.world.InteractionHand hand) {
+        if (!level().isClientSide && level().purpurConfig.shearsCanDefuseTnt) {
+            final net.minecraft.world.item.ItemStack inHand = player.getItemInHand(hand);
+
+            if (!inHand.is(net.minecraft.world.item.Items.SHEARS) || !player.getBukkitEntity().hasPermission("purpur.tnt.defuse") ||
+                    level().random.nextFloat() > level().purpurConfig.shearsCanDefuseTntChance) return net.minecraft.world.InteractionResult.PASS;
+
+            net.minecraft.world.entity.item.ItemEntity tntItem = new net.minecraft.world.entity.item.ItemEntity(level(), getX(), getY(), getZ(),
+                    new net.minecraft.world.item.ItemStack(net.minecraft.world.item.Items.TNT));
+            tntItem.setPickUpDelay(10);
+
+            inHand.hurtAndBreak(1, player, LivingEntity.getSlotForHand(hand));
+            level().addFreshEntity(tntItem, org.bukkit.event.entity.CreatureSpawnEvent.SpawnReason.CUSTOM);
+
+            this.playSound(net.minecraft.sounds.SoundEvents.SHEEP_SHEAR);
+
+            this.kill();
+            return net.minecraft.world.InteractionResult.SUCCESS;
+        }
+
+        return super.interact(player, hand);
+    }
+    // Purpur end - Shears can defuse TNT
 }
diff --git a/src/main/java/org/purpurmc/purpur/PurpurWorldConfig.java b/src/main/java/org/purpurmc/purpur/PurpurWorldConfig.java
index ef176763c3aababc8b41a1f53acea44703fdebe0..bd2457af40d00763c1598dca687ceb71fb358653 100644
--- a/src/main/java/org/purpurmc/purpur/PurpurWorldConfig.java
+++ b/src/main/java/org/purpurmc/purpur/PurpurWorldConfig.java
@@ -3435,4 +3435,11 @@ public class PurpurWorldConfig {
         cauldronDripstoneWaterFillChance = (float) getDouble("blocks.cauldron.fill-chances.dripstone-water", cauldronDripstoneWaterFillChance);
         cauldronDripstoneLavaFillChance = (float) getDouble("blocks.cauldron.fill-chances.dripstone-lava", cauldronDripstoneLavaFillChance);
     }
+
+    public float shearsCanDefuseTntChance = 0.00F;
+    public boolean shearsCanDefuseTnt = false;
+    private void shearsCanDefuseTntSettings() {
+        shearsCanDefuseTntChance = (float) getDouble("gameplay-mechanics.item.shears.defuse-tnt-chance", 0.00D);
+        shearsCanDefuseTnt = shearsCanDefuseTntChance > 0.00F;
+    }
 }