block updates completely prohibitable

Man kann jetzt weder blöcke platzieren noch abbauen, sofern der denkmalblock ein redstone signal erhält. Block hat noch kein Interface und kann nciht verschoben werden

src/main/java/modchest/block/custom/denkMalBlock.java

@@ -18,6 +18,9 @@ import net.minecraft.world.World;
 import net.minecraft.world.WorldAccess;
 import net.minecraft.world.explosion.Explosion;
 import org.jetbrains.annotations.Nullable;
+import org.spongepowered.asm.mixin.Final;
+import org.spongepowered.asm.mixin.Mutable;
+import org.spongepowered.asm.mixin.Shadow;
 
 import static modchest.block.modBlocks.denk_mal_block_placeholder;
 
@@ -138,4 +141,10 @@ public class denkMalBlock extends BlockWithEntity {     //Item soll nicht crafta
             }
         }
     }
+
+    @Mutable
+    @Final protected BlockPos worldPosition;
+    public void setCMPos(BlockPos newPos) {
+        worldPosition = newPos;
+    }
 }

src/main/java/modchest/event/playerBreakBlockEvents.java

@@ -0,0 +1,18 @@
+package modchest.event;
+
+import modchest.util.denkMalBlockUtil;
+import net.fabricmc.fabric.api.event.player.PlayerBlockBreakEvents;
+import net.minecraft.block.BlockState;
+import net.minecraft.block.entity.BlockEntity;
+import net.minecraft.entity.player.PlayerEntity;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.world.World;
+import org.jetbrains.annotations.Nullable;
+
+public class playerBreakBlockEvents implements  PlayerBlockBreakEvents.Before {
+    @Override
+    public boolean beforeBlockBreak(World world, PlayerEntity player, BlockPos pos, BlockState state, @Nullable BlockEntity blockEntity) {
+        denkMalBlockUtil util = new denkMalBlockUtil();
+        return util.allowBlocks(world, player, pos);
+    }
+}

src/main/java/modchest/mixin/flintAndSteelItemMixin.java

@@ -0,0 +1,41 @@
+package modchest.mixin;
+
+import modchest.REServerMod;
+import modchest.util.denkMalBlockUtil;
+import net.minecraft.entity.player.PlayerEntity;
+import net.minecraft.item.FlintAndSteelItem;
+import net.minecraft.item.ItemUsageContext;
+import net.minecraft.util.ActionResult;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.world.World;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Unique;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfoReturnable;
+
+@Mixin(FlintAndSteelItem.class)
+public class flintAndSteelItemMixin {
+
+    @Inject(method = "useOnBlock", at = @At("HEAD"), cancellable = true)
+    public void useOnBlock(ItemUsageContext context, CallbackInfoReturnable<ActionResult> cir) {
+        if(!callPlaceable(context)) {
+            cir.setReturnValue(ActionResult.FAIL);
+        }
+    }
+
+    @Unique
+    private boolean callPlaceable(ItemUsageContext context) {
+        try {
+            PlayerEntity player = context.getPlayer();
+            World world = context.getWorld();
+            BlockPos pos = context.getBlockPos();
+            denkMalBlockUtil util = new denkMalBlockUtil();
+            return util.allowBlocks(world, player, pos);
+        } catch (Exception e) {
+            REServerMod.LOGGER.info("Exception in variables: " + e.toString());
+        }
+            return false;
+    }
+
+}

src/main/java/modchest/mixin/itemMixin.java

@@ -0,0 +1,41 @@
+package modchest.mixin;
+
+import modchest.REServerMod;
+import modchest.util.denkMalBlockUtil;
+import net.minecraft.entity.player.PlayerEntity;
+import net.minecraft.item.Item;
+import net.minecraft.item.ItemUsageContext;
+import net.minecraft.util.ActionResult;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.world.World;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Unique;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfoReturnable;
+
+@Mixin(Item.class)
+public class itemMixin {
+
+    @Inject(method = "useOnBlock", at = @At("HEAD"), cancellable = true)
+    public void useOnBlock(ItemUsageContext context, CallbackInfoReturnable<ActionResult> cir) {
+        if(!callPlaceable(context)) {
+            cir.setReturnValue(ActionResult.FAIL);
+        }
+    }
+
+    @Unique
+    private boolean callPlaceable(ItemUsageContext context) {
+        try {
+            PlayerEntity player = context.getPlayer();
+            World world = context.getWorld();
+            BlockPos pos = context.getBlockPos();
+            denkMalBlockUtil util = new denkMalBlockUtil();
+            return util.allowBlocks(world, player, pos);
+        } catch (Exception e) {
+            REServerMod.LOGGER.info("Exception in variables: " + e.toString());
+        }
+            return false;
+    }
+
+}

src/main/java/modchest/mixin/playerPlaceBlockMixin.java

@@ -0,0 +1,34 @@
+package modchest.mixin;
+
+import modchest.util.denkMalBlockUtil;
+import net.minecraft.entity.player.PlayerEntity;
+import net.minecraft.item.BlockItem;
+import net.minecraft.item.ItemPlacementContext;
+import net.minecraft.util.ActionResult;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.world.World;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Unique;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfoReturnable;
+
+@Mixin(BlockItem.class)
+public class playerPlaceBlockMixin {
+    @Inject(method = "place(Lnet/minecraft/item/ItemPlacementContext;)Lnet/minecraft/util/ActionResult;", at = @At("HEAD"), cancellable = true)
+    public void canPlace(ItemPlacementContext context, CallbackInfoReturnable<ActionResult> cir) {
+        if(!callPlaceable(context)) {
+            cir.setReturnValue(ActionResult.FAIL);
+        }
+    }
+
+    @Unique
+    private boolean callPlaceable(ItemPlacementContext context) {
+        PlayerEntity player = context.getPlayer();
+        World world = context.getWorld();
+        BlockPos pos = context.getBlockPos();
+
+        denkMalBlockUtil util = new denkMalBlockUtil();
+        return util.allowBlocks(world, player, pos);
+    }
+}

src/main/java/modchest/util/denkMalBlockUtil.java

@@ -1,29 +1,37 @@
 package modchest.util;
 
+import net.minecraft.entity.player.PlayerEntity;
 import net.minecraft.nbt.NbtCompound;
+import net.minecraft.text.Text;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.world.World;
 
 import java.util.Arrays;
+import java.util.Set;
+
+import static java.lang.Math.abs;
 
 public class denkMalBlockUtil extends dataSaverIO{
 
     public denkMalBlockUtil() {}
 
+
     public void addBlock(int[] pos, int[] range) {      //fuegt bloecke der Liste an abbauverhindernden Bloecke hinzu
-        NbtCompound tempNbt = new NbtCompound();        //Nbt in dem die Lockdaten gespeichert werden
+        NbtCompound tempNbt = new NbtCompound();        //Nbt in dem die Blockdaten gespeichert werden
+        NbtCompound nbt = returnLoadedNbt();      //holt sich den denkmalblock nbt
         tempNbt.putIntArray("position", pos);
         tempNbt.putIntArray("range", range);
-        NbtCompound nbt = returnloadedNbt();        //holt sich den denkmalblock nbt
         nbt.put(Arrays.toString(pos), tempNbt); //speichert die daten des neuen Blocks ab
         saveInNbt(nbt);             //speichert den editierten denkmalblock-nbt ab
     }
 
     public void removeBlock(int[] posString) {  //loescht bloecke aus Liste an abbauverhindernden Bloecken
-        NbtCompound nbt = returnloadedNbt();    //holt sich den denkmalblock nbt
+        NbtCompound nbt = returnLoadedNbt();    //holt sich den denkmalblock nbt
         nbt.remove(Arrays.toString(posString)); //entfernt diesen block
         saveInNbt(nbt);     //speichert den editierten denkmalblock-nbt ab
     }
 
-    private NbtCompound returnloadedNbt() {     //gibt den denkmalblock nbt zurueck
+    private NbtCompound returnLoadedNbt() {     //gibt den denkmalblock nbt zurueck
         NbtCompound nbt = getFromNbt();     //laedt den gesamten reServerNbt
         nbt = (NbtCompound) nbt.get("denkmalblock");//nimmt den denkmalblocknbt und laedt diesen
         if (nbt == null) {      //sollte der nbt noch nicht existieren wird er erstellt
@@ -37,4 +45,40 @@ public class denkMalBlockUtil extends dataSaverIO{
         reServerNbt.put("denkmalblock", nbt);   //schreibt den denkmalblock nbt ab
         writeToNbt(reServerNbt);    //schreibt den editierten reServerNbt
     }
+
+    public boolean allowBlocks(World world, PlayerEntity player, BlockPos pos) {
+        if (world.getRegistryKey() == World.OVERWORLD) {
+            if (!player.isCreative()) {
+                NbtCompound nbt = returnLoadedNbt();
+                Set<String> set = nbt.getKeys();
+                String[] keys = set.toArray(new String[0]);//erzeugt einen String-Array mit allen keys
+
+                for (String key : keys) {
+                    if (inRange((NbtCompound) nbt.get(key), pos)) {
+                        if (!world.isClient) {
+                            player.sendMessage(Text.of("Can't change Blocks here! This area is protected!"));
+                        }
+                        return false;
+                    }
+                }
+            }
+        }
+        return true;
+    }
+
+    private boolean inRange(NbtCompound nbt, BlockPos pos) {
+        int[] denkPos = nbt.getIntArray("position");
+        int[] denkRange = nbt.getIntArray("range");
+        int[] blockPos = new int[3];
+        blockPos[0] = pos.getX();
+        blockPos[1] = pos.getY();
+        blockPos[2] = pos.getZ();
+        for(int i = 0; i < 3; i++) {
+            int dif = (denkPos[i] - blockPos[i]);
+            if (abs(dif) > denkRange[i]) {
+                return false;
+            }
+        }
+        return true;
+    }
 }

src/main/java/modchest/util/initializer.java

@@ -3,10 +3,12 @@ package modchest.util;
 import modchest.block.entity.modBlockEntities;
 import modchest.block.modBlocks;
 import modchest.event.playerAfterRespawnEvent;
+import modchest.event.playerBreakBlockEvents;
 import modchest.item.modItemGroup;
 import modchest.item.modItems;
 import modchest.networking.modNetworkingServer;
 import net.fabricmc.fabric.api.entity.event.v1.ServerPlayerEvents;
+import net.fabricmc.fabric.api.event.player.PlayerBlockBreakEvents;
 
 public class initializer {
     public static void itemGroups() {
@@ -22,6 +24,7 @@ public class initializer {
 
     public static void events() {   //Events, bei denen custom Code ausgefuehrt wird, werden eingefuehrt
         ServerPlayerEvents.AFTER_RESPAWN.register(new playerAfterRespawnEvent());
+        PlayerBlockBreakEvents.BEFORE.register(new playerBreakBlockEvents());
     }
 
     public static void networking() {   //Identifier unter denen der Server zuhoert werden registriert

src/main/resources/reservermod.mixins.json

@@ -4,8 +4,11 @@
   "compatibilityLevel": "JAVA_17",
   "mixins": [
     "bedBlockMixin",
+    "flintAndSteelItemMixin",
+    "itemMixin",
     "LevelStorageMixin",
     "MinecraftServerMixin",
+    "playerPlaceBlockMixin",
     "ServerPlayerEntityMixin"
   ],
   "injectors": {