add region and area basics

src/main/java/net/pietru/cookie_utils/api/Area.java

@@ -0,0 +1,20 @@
+package net.pietru.cookie_utils.api;
+
+import com.badlogic.gdx.math.Vector3;
+import com.badlogic.gdx.math.collision.BoundingBox;
+
+public class Area {
+    BoundingBox space = new BoundingBox();
+
+    public BoundingBox getBox() {
+        return space;
+    }
+
+    public void setCorners(Vector3 a, Vector3 b){
+        space.set(a,b);
+    }
+
+    public boolean does_intersect(Vector3 c){
+        return space.contains(c);
+    }
+}

src/main/java/net/pietru/cookie_utils/api/Region.java

@@ -0,0 +1,26 @@
+package net.pietru.cookie_utils.api;
+
+import com.badlogic.gdx.math.Vector3;
+import com.badlogic.gdx.utils.Array;
+import finalforeach.cosmicreach.blocks.BlockPosition;
+import finalforeach.cosmicreach.world.Zone;
+
+public class Region {
+
+    public static Array<Area> areas = new Array<>();
+
+    public static boolean can_edit_block(BlockPosition position){
+        Zone z = position.getZone();
+        Vector3 g_position = new Vector3(position.getGlobalX(),position.getGlobalY(),position.getGlobalZ());
+        boolean can = true;
+
+        for (Area a : areas){
+            if (a.does_intersect(g_position)){
+                can=false;
+                break;
+            }
+        }
+
+        return can;
+    }
+}

src/main/java/net/pietru/cookie_utils/mixins/BlockBreakMixin.java

@@ -14,6 +14,8 @@ import org.spongepowered.asm.mixin.injection.At;
 import org.spongepowered.asm.mixin.injection.Inject;
 import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
 
+import static net.pietru.cookie_utils.api.Region.can_edit_block;
+
 @Mixin(BreakBlockPacket.class)
 public class BlockBreakMixin {
     @Shadow
@@ -26,7 +28,7 @@ public class BlockBreakMixin {
     @Inject(method = "handle", at = @At("HEAD"), cancellable = true)
     private void event_block_break(@Local NetworkIdentity identity, @Local ChannelHandlerContext ctx, CallbackInfo ci){
         if (identity.getSide() != NetworkSide.CLIENT) {
-            if (this.blockPos.getBlockState() == this.brokenBlockState) {
+            if (!can_edit_block(blockPos)) {
                 ci.cancel();
             }
         }

src/main/java/net/pietru/cookie_utils/mixins/BlockPlaceMixin.java

@@ -0,0 +1,36 @@
+package net.pietru.cookie_utils.mixins;
+
+import com.llamalad7.mixinextras.sugar.Local;
+import finalforeach.cosmicreach.blocks.BlockPosition;
+import finalforeach.cosmicreach.blocks.BlockState;
+import finalforeach.cosmicreach.networking.common.NetworkIdentity;
+import finalforeach.cosmicreach.networking.common.NetworkSide;
+import finalforeach.cosmicreach.networking.netty.packets.blocks.PlaceBlockPacket;
+import finalforeach.cosmicreach.world.Zone;
+import io.netty.channel.ChannelHandlerContext;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Shadow;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
+
+import static net.pietru.cookie_utils.api.Region.can_edit_block;
+
+@Mixin(PlaceBlockPacket.class)
+public class BlockPlaceMixin {
+    @Shadow
+    Zone zone;
+    @Shadow
+    BlockPosition blockPos;
+    @Shadow
+    BlockState targetBlockState;
+
+    @Inject(method = "handle", at = @At("HEAD"), cancellable = true)
+    private void event_block_place(@Local NetworkIdentity identity, @Local ChannelHandlerContext ctx, CallbackInfo ci){
+        if (identity.getSide() != NetworkSide.CLIENT) {
+            if (!can_edit_block(blockPos)) {
+                ci.cancel();
+            }
+        }
+    }
+}

src/main/resources/cookie_utils.mixins.json

@@ -4,7 +4,8 @@
   "package": "net.pietru.cookie_utils.mixins",
   "compatibilityLevel": "JAVA_17",
   "mixins": [
-    "BlockBreakMixin"
+    "BlockBreakMixin",
+    "BlockPlaceMixin"
   ],
   "client": [],
   "injectors": {