fix: 奇点吞方块前问保护层（BreakEvent）；毁灭爆炸遵守 mobGriefing；暴露 getOwnerEntity

Co-Authored-By: Claude Sonnet 5.5 <[email protected]>

src/main/java/com/pengu/thaumcraft/additions/entity/EntitySingularity.java

@@ -1,11 +1,13 @@
 package com.pengu.thaumcraft.additions.entity;
 
 import com.pengu.thaumcraft.additions.api.integration.ThaumicAdditionsDamage;
+import com.pengu.thaumcraft.additions.misc.TerritoryGuard;
 import java.util.List;
 import net.minecraft.entity.Entity;
 import net.minecraft.entity.EntityLivingBase;
 import net.minecraft.entity.boss.EntityDragon;
 import net.minecraft.entity.boss.EntityWither;
+import net.minecraft.entity.player.EntityPlayer;
 import net.minecraft.entity.item.EntityItem;
 import net.minecraft.init.Blocks;
 import net.minecraft.item.ItemStack;
@@ -58,7 +60,7 @@ public class EntitySingularity extends EntityAlumentum {
             ++this.ticksExisted;
             if(this.ticksExisted >= 2000 || this.suckedItems >= 2000.0F) {
                for(p = 0; p < 5; ++p) {
-                  this.worldObj.createExplosion(this, this.posX, this.posY, this.posZ, this.suckedItems / 200.0F, true);
+                  this.worldObj.createExplosion(this, this.posX, this.posY, this.posZ, this.suckedItems / 200.0F, this.worldObj.getGameRules().getGameRuleBooleanValue("mobGriefing"));
                }
 
                this.setDead();
@@ -137,7 +139,7 @@ public class EntitySingularity extends EntityAlumentum {
                i = (int)this.posX + this.worldObj.rand.nextInt(this.radius) - this.worldObj.rand.nextInt(this.radius);
                var22 = (int)this.posY + this.worldObj.rand.nextInt(this.radius) - this.worldObj.rand.nextInt(this.radius);
                var23 = (int)this.posZ + this.worldObj.rand.nextInt(this.radius) - this.worldObj.rand.nextInt(this.radius);
-               if(this.worldObj.getBlock(i, var22, var23) != Blocks.air && this.worldObj.getBlock(i, var22, var23).getBlockHardness(this.worldObj, i, var22, var23) > -1.0F && this.worldObj.getGameRules().getGameRuleBooleanValue("mobGriefing")) {
+               if(this.worldObj.getBlock(i, var22, var23) != Blocks.air && this.worldObj.getBlock(i, var22, var23).getBlockHardness(this.worldObj, i, var22, var23) > -1.0F && this.worldObj.getGameRules().getGameRuleBooleanValue("mobGriefing") && this.canDestroy(i, var22, var23)) {
                   this.worldObj.getBlock(i, var22, var23).breakBlock(this.worldObj, i, var22, var23, this.worldObj.getBlock(i, var22, var23), 1);
                   this.worldObj.playSoundEffect((double)i, (double)var22, (double)var23, this.worldObj.getBlock(i, var22, var23).stepSound.getBreakSound(), this.worldObj.getBlock(i, var22, var23).stepSound.getVolume(), this.worldObj.getBlock(i, var22, var23).stepSound.getPitch());
                   if(!this.worldObj.isRemote) {
@@ -188,6 +190,17 @@ public class EntitySingularity extends EntityAlumentum {
 
    }
 
+   /** The player who threw it, or null (dispenser, merged singularity). Protection plugins read this by name. */
+   public EntityPlayer getOwnerEntity() {
+      EntityLivingBase t = this.getThrower();
+      return t instanceof EntityPlayer ? (EntityPlayer)t : null;
+   }
+
+   /** Island/territory check: a BreakEvent as the thrower, or as a fake player when nobody threw it. */
+   private boolean canDestroy(int x, int y, int z) {
+      return TerritoryGuard.canRemoveBlock(this.worldObj, x, y, z, this.getOwnerEntity());
+   }
+
    protected void onImpact(MovingObjectPosition m) {
       this.worldObj.playSoundEffect(this.posX, this.posY, this.posZ, "thaumicadditions:singularity", 16.0F, 1.0F);
       this.inGround = true;

src/main/java/com/pengu/thaumcraft/additions/misc/TerritoryGuard.java

@@ -0,0 +1,57 @@
+package com.pengu.thaumcraft.additions.misc;
+
+import java.lang.ref.WeakReference;
+
+import net.minecraft.entity.player.EntityPlayer;
+import net.minecraft.world.World;
+import net.minecraft.world.WorldServer;
+
+import net.minecraftforge.common.MinecraftForge;
+import net.minecraftforge.common.util.FakePlayer;
+import net.minecraftforge.common.util.FakePlayerFactory;
+import net.minecraftforge.event.world.BlockEvent;
+
+/**
+ * Standard cancellable BlockEvent.BreakEvent gate for block removal that no player performs directly
+ * (void entity, hungry blocks, ...). Island and territory plugins receive the contract they already handle for player
+ * mining; the actor is the responsible player when there is one, otherwise a per-world fake player (which the
+ * protection layer judges as an unattributed machine). With no receiver nothing changes.
+ */
+public final class TerritoryGuard {
+
+    private static WeakReference<EntityPlayer> fallback = new WeakReference<>(null);
+
+    /** @param actor the player responsible for the removal, or null when there is none */
+    public static boolean canRemoveBlock(World world, int x, int y, int z, EntityPlayer actor) {
+        EntityPlayer who = resolveActor(world, actor);
+        if (who == null) {
+            // no world to attribute the event to (client world): nothing to protect
+            return !(world instanceof WorldServer);
+        }
+        BlockEvent.BreakEvent event = new BlockEvent.BreakEvent(
+                x,
+                y,
+                z,
+                world,
+                world.getBlock(x, y, z),
+                world.getBlockMetadata(x, y, z),
+                who);
+        return !MinecraftForge.EVENT_BUS.post(event);
+    }
+
+    private static EntityPlayer resolveActor(World world, EntityPlayer actor) {
+        if (actor != null) return actor;
+        if (world instanceof WorldServer) {
+            EntityPlayer player = fallback.get();
+            if (player == null || player.worldObj != world) {
+                FakePlayer fake = FakePlayerFactory.getMinecraft((WorldServer) world);
+                player = fake;
+                fallback = new WeakReference<>(player);
+            }
+            return player;
+        }
+        return null;
+    }
+
+    private TerritoryGuard() {}
+}

tests/regression/singularity_territory_guard_regression.py

@@ -0,0 +1,28 @@
+#!/usr/bin/env python3
+"""The singularity must ask the protection layer before removing a block and respect mobGriefing for its blast."""
+
+from pathlib import Path
+
+ROOT = Path(__file__).resolve().parents[2]
+SRC = (ROOT / "src/main/java/com/pengu/thaumcraft/additions/entity/EntitySingularity.java").read_text(encoding="utf-8")
+GUARD = (ROOT / "src/main/java/com/pengu/thaumcraft/additions/misc/TerritoryGuard.java").read_text(encoding="utf-8")
+
+
+def main():
+    assert "new BlockEvent.BreakEvent(" in GUARD and "EVENT_BUS.post(event)" in GUARD
+    assert "FakePlayerFactory.getMinecraft" in GUARD
+
+    # the block-eating branch is gated by the guard before any breakBlock / setBlockToAir
+    gate = SRC.index("this.canDestroy(i, var22, var23)")
+    assert gate < SRC.index(".breakBlock(this.worldObj, i, var22, var23"), "guard must precede breakBlock"
+    assert gate < SRC.index("this.worldObj.setBlockToAir(i, var22, var23)")
+    assert "TerritoryGuard.canRemoveBlock(this.worldObj, x, y, z, this.getOwnerEntity())" in SRC
+
+    # explosion attribution accessor, plus the end-of-life blast no longer ignores mobGriefing
+    assert "public EntityPlayer getOwnerEntity()" in SRC
+    assert 'this.suckedItems / 200.0F, true)' not in SRC
+    print("ok")
+
+
+if __name__ == "__main__":
+    main()