From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Samsuik <40902469+Samsuik@users.noreply.github.com>
Date: Wed, 15 Nov 2023 23:18:38 +0000
Subject: [PATCH] Explosion Durable Blocks


diff --git a/src/main/java/me/samsuik/sakura/explosion/durable/DurableBlockManager.java b/src/main/java/me/samsuik/sakura/explosion/durable/DurableBlockManager.java
new file mode 100644
index 0000000000000000000000000000000000000000..2e11ba36e9e820f17839d696e5d7d876e7437fbf
--- /dev/null
+++ b/src/main/java/me/samsuik/sakura/explosion/durable/DurableBlockManager.java
@@ -0,0 +1,63 @@
+package me.samsuik.sakura.explosion.durable;
+
+import it.unimi.dsi.fastutil.longs.Long2ObjectOpenHashMap;
+import me.samsuik.sakura.utils.objects.Expiry;
+import net.minecraft.core.BlockPos;
+import net.minecraft.server.MinecraftServer;
+
+public class DurableBlockManager {
+
+    private final Long2ObjectOpenHashMap<DurableBlock> blocks = new Long2ObjectOpenHashMap<>();
+
+    public boolean damage(BlockPos pos, DurableMaterial material) {
+        long packed = pos.asLong();
+
+        DurableBlock block = this.blocks.computeIfAbsent(packed, k -> new DurableBlock(
+            material.durability(),
+            // expire after 1 minute
+            new Expiry(MinecraftServer.currentTickLong, 1200)
+        ));
+
+        if (block.damage()) {
+            this.blocks.remove(packed);
+            return true;
+        } else {
+            block.getExpiry().refresh(MinecraftServer.currentTickLong);
+            return false;
+        }
+    }
+
+    public int durability(BlockPos pos, DurableMaterial material) {
+        DurableBlock block = this.blocks.get(pos.asLong());
+        return block != null ? block.getDurability() : material.durability();
+    }
+
+    public void expire(long tick) {
+        if (tick % 200 == 0) {
+            this.blocks.values().removeIf(block -> block.getExpiry().isExpired(tick));
+        }
+    }
+
+    private static class DurableBlock {
+        private int durability;
+        private final Expiry expiry;
+
+        public DurableBlock(int durability, Expiry expiry) {
+            this.durability = durability;
+            this.expiry = expiry;
+        }
+
+        public Expiry getExpiry() {
+            return expiry;
+        }
+
+        public int getDurability() {
+            return durability;
+        }
+
+        public boolean damage() {
+            return --this.durability <= 0;
+        }
+    }
+
+}
diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
index 26b0c5d77fe10153300030c0f0fb0f63b552121a..5b85d87ae230b17c295ee54258293b5c4521e0a3 100644
--- a/src/main/java/net/minecraft/server/MinecraftServer.java
+++ b/src/main/java/net/minecraft/server/MinecraftServer.java
@@ -1751,6 +1751,7 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
             worldserver.minimalTNT.clear(); // Sakura - visibility api
             worldserver.mergeHistory.expire(currentTickLong); // Sakura - merge cannoning entities
             worldserver.densityCache.clear(); // Sakura
+            worldserver.durabilityManager.expire(currentTickLong); // Sakura
         }
         this.isIteratingOverLevels = false; // Paper
 
diff --git a/src/main/java/net/minecraft/world/item/ItemNameBlockItem.java b/src/main/java/net/minecraft/world/item/ItemNameBlockItem.java
index a8008c7550488be34b51f4280f5569170b1ebd1d..b10cfec6da6dfab89e585c5d4d39ae04f7d2e43d 100644
--- a/src/main/java/net/minecraft/world/item/ItemNameBlockItem.java
+++ b/src/main/java/net/minecraft/world/item/ItemNameBlockItem.java
@@ -7,6 +7,33 @@ public class ItemNameBlockItem extends BlockItem {
         super(block, settings);
     }
 
+    // Sakura start
+    @Override
+    public net.minecraft.world.InteractionResult useOn(net.minecraft.world.item.context.UseOnContext context) {
+        Block itemBlock = this.getBlock();
+        if (context.getPlayer() != null && itemBlock.equals(net.minecraft.world.level.block.Blocks.POTATOES)) {
+            net.minecraft.world.entity.player.Player player = context.getPlayer();
+            net.minecraft.world.level.block.state.BlockState state = context.getLevel().getBlockState(context.getClickedPos());
+            Block block = state.getBlock();
+            me.samsuik.sakura.explosion.durable.DurableMaterial material = context.getLevel().localConfig().config(context.getClickedPos()).durableMaterials.get(block);
+
+            if (material != null) {
+                int durability = context.getLevel().durabilityManager.durability(context.getClickedPos(), material);
+                this.sendPotatoMessage(player, durability, material.durability());
+            }
+        }
+        return super.useOn(context);
+    }
+
+    private void sendPotatoMessage(net.minecraft.world.entity.player.Player player, int remaining, int durability) {
+        player.getBukkitEntity().sendRichMessage(
+            me.samsuik.sakura.configuration.GlobalConfiguration.get().players.potatoMessage,
+            net.kyori.adventure.text.minimessage.tag.resolver.Placeholder.unparsed("remaining", String.valueOf(remaining)),
+            net.kyori.adventure.text.minimessage.tag.resolver.Placeholder.unparsed("durability", String.valueOf(durability))
+        );
+    }
+    // Sakura end
+
     @Override
     public String getDescriptionId() {
         return this.getOrCreateDescriptionId();
diff --git a/src/main/java/net/minecraft/world/level/Explosion.java b/src/main/java/net/minecraft/world/level/Explosion.java
index fdc0a863aaf6fee90cea28966009088a9926cb1b..423f72ef68972f7023cf1716442f693ba4df7dc0 100644
--- a/src/main/java/net/minecraft/world/level/Explosion.java
+++ b/src/main/java/net/minecraft/world/level/Explosion.java
@@ -212,6 +212,17 @@ public class Explosion {
 
             Optional<Float> resistance = !calculateResistance ? Optional.empty() : this.damageCalculator.getBlockExplosionResistance((Explosion)(Object)this, this.level, pos, blockState, fluidState);
 
+            // Sakura start - durable materials
+            if (calculateResistance) {
+                Block block = blockState.getBlock();
+                me.samsuik.sakura.explosion.durable.DurableMaterial material = this.level.localConfig().config(pos).durableMaterials.get(block);
+
+                if (material != null && material.resistance() >= 0.0f && (this.level.sakuraConfig().cannons.explosion.allowNonTntBreakingDurableBlocks || this.source instanceof net.minecraft.world.entity.item.PrimedTnt)) {
+                    resistance = Optional.of(material.resistance());
+                }
+            }
+            // Sakura end
+
             ret = new ExplosionBlockCache(
                 key, pos, blockState, fluidState,
                 (resistance.orElse(ZERO_RESISTANCE).floatValue() + 0.3f) * 0.3f,
@@ -812,6 +823,16 @@ public class Explosion {
                 // CraftBukkit start - TNTPrimeEvent
                 BlockState iblockdata = this.level.getBlockState(blockposition);
                 Block block = iblockdata.getBlock();
+                // Sakura start - durable materials
+                if (this.level.sakuraConfig().cannons.explosion.allowNonTntBreakingDurableBlocks || this.source instanceof net.minecraft.world.entity.item.PrimedTnt) {
+                    me.samsuik.sakura.explosion.durable.DurableMaterial material = this.level.localConfig().config(blockposition).durableMaterials.get(block);
+
+                    if (material != null && material.durability() >= 0 && !this.level.durabilityManager.damage(blockposition, material)) {
+                        objectlistiterator.remove();
+                        continue;
+                    }
+                }
+                // Sakura end
                 if (block instanceof net.minecraft.world.level.block.TntBlock) {
                     Entity sourceEntity = this.source == null ? null : this.source;
                     BlockPos sourceBlock = sourceEntity == null ? BlockPos.containing(this.x, this.y, this.z) : null;
diff --git a/src/main/java/net/minecraft/world/level/Level.java b/src/main/java/net/minecraft/world/level/Level.java
index a2f8040da7e8baa120e5dcdacb3c5b22f2f2eb46..374d600692975a2e8514e8e99c7fa18599ef8dfc 100644
--- a/src/main/java/net/minecraft/world/level/Level.java
+++ b/src/main/java/net/minecraft/world/level/Level.java
@@ -239,6 +239,7 @@ public abstract class Level implements LevelAccessor, AutoCloseable {
     // Sakura end
     public final me.samsuik.sakura.entity.merge.MergeHistory mergeHistory = new me.samsuik.sakura.entity.merge.MergeHistory(); // Sakura
     public final me.samsuik.sakura.explosion.DensityCache densityCache = new me.samsuik.sakura.explosion.DensityCache(); // Sakura
+    public final me.samsuik.sakura.explosion.durable.DurableBlockManager durabilityManager = new me.samsuik.sakura.explosion.durable.DurableBlockManager(); // Sakura
 
     // Sakura start - limited get entities
     public void getLimitedEntities(Entity except, AABB box, Predicate<? super Entity> predicate, List<Entity> into, int limit, int search) {