Inventories! (Part 1)

src/main/java/com/loohp/limbo/location/MovingObjectPosition.java

@@ -0,0 +1,51 @@
+/*
+ * This file is part of Limbo.
+ *
+ * Copyright (C) 2022. LoohpJames <jamesloohp@gmail.com>
+ * Copyright (C) 2022. Contributors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.loohp.limbo.location;
+
+import com.loohp.limbo.entity.Entity;
+
+public abstract class MovingObjectPosition {
+
+    protected final Vector location;
+
+    protected MovingObjectPosition(Vector vec3d) {
+        this.location = vec3d;
+    }
+
+    public double distanceTo(Entity entity) {
+        double d0 = this.location.x - entity.getX();
+        double d1 = this.location.y - entity.getY();
+        double d2 = this.location.z - entity.getZ();
+
+        return d0 * d0 + d1 * d1 + d2 * d2;
+    }
+
+    public abstract MovingObjectPosition.EnumMovingObjectType getType();
+
+    public Vector getLocation() {
+        return this.location;
+    }
+
+    public enum EnumMovingObjectType {
+
+        MISS, BLOCK, ENTITY;
+
+    }
+}