general parenting

.idea/inspectionProfiles/Project_Default.xml

@@ -0,0 +1,36 @@
+<component name="InspectionProjectProfileManager">
+  <profile version="1.0">
+    <option name="myName" value="Project Default" />
+    <inspection_tool class="JavaDoc" enabled="true" level="WARNING" enabled_by_default="true">
+      <option name="TOP_LEVEL_CLASS_OPTIONS">
+        <value>
+          <option name="ACCESS_JAVADOC_REQUIRED_FOR" value="none" />
+          <option name="REQUIRED_TAGS" value="" />
+        </value>
+      </option>
+      <option name="INNER_CLASS_OPTIONS">
+        <value>
+          <option name="ACCESS_JAVADOC_REQUIRED_FOR" value="none" />
+          <option name="REQUIRED_TAGS" value="" />
+        </value>
+      </option>
+      <option name="METHOD_OPTIONS">
+        <value>
+          <option name="ACCESS_JAVADOC_REQUIRED_FOR" value="none" />
+          <option name="REQUIRED_TAGS" value="@return@param@throws or @exception" />
+        </value>
+      </option>
+      <option name="FIELD_OPTIONS">
+        <value>
+          <option name="ACCESS_JAVADOC_REQUIRED_FOR" value="none" />
+          <option name="REQUIRED_TAGS" value="" />
+        </value>
+      </option>
+      <option name="IGNORE_DEPRECATED" value="false" />
+      <option name="IGNORE_JAVADOC_PERIOD" value="true" />
+      <option name="IGNORE_DUPLICATED_THROWS" value="false" />
+      <option name="IGNORE_POINT_TO_ITSELF" value="false" />
+      <option name="myAdditionalJavadocTags" value="Code" />
+    </inspection_tool>
+  </profile>
+</component>

src/main/java/core/math/Coordinates.java

@@ -1,6 +1,8 @@
 package core.math;
 
 import core.general.Master;
+import core.objects.core.MapAnchor;
+import core.objects.core.GameObject;
 
 /**
  * This class provides everything about the local coordinate system the game uses
@@ -9,6 +11,8 @@ import core.general.Master;
  */
 public class Coordinates {
 
+    public static final GameObject MAP_ANCHOR = new MapAnchor();
+
     /**
      * This utility class should not be instantiated
      */

src/main/java/core/objects/base/Empty.java

@@ -0,0 +1,21 @@
+package core.objects.base;
+
+import core.math.Vector2D;
+import core.objects.core.GameObject;
+
+import java.awt.*;
+
+public class Empty extends GameObject {
+
+    public Empty(Vector2D position) {
+        super(position, new Vector2D(0, 0));
+    }
+
+    @Override
+    public void draw(Graphics2D g2d) {
+    }
+
+    @Override
+    public void update() {
+    }
+}

src/main/java/core/objects/core/GameObject.java

@@ -8,7 +8,7 @@ import core.math.Vector2D;
 import java.awt.*;
 
 /**
- * The GameObject class is the superclass of every GameObject that can be displayed on screen. It has the 2
+ * The GameObject class is the superclass of every {@code GameObject} that can be displayed on screen. It has the 2
  * {@link #update()} and {@link #draw(Graphics2D)} methods that have to be overridden
  */
 public abstract class GameObject implements Drawable {
@@ -39,6 +39,7 @@ public abstract class GameObject implements Drawable {
         this.mainColor = Color.BLACK;
         this.master = Master.getMaster();
         this.layer = 0;
+        this.parent = Coordinates.MAP_ANCHOR;
     }
 
     /**
@@ -107,13 +108,14 @@ public abstract class GameObject implements Drawable {
      * This method draws an oval at the current position and size with arguments
      *
      * @param g2d The Graphics2D object provided by the master
+     * @param arg Arguments like "center" for the object being drawn in the center
      */
     public void drawOval(Graphics2D g2d, String arg) {
 
         Vector2D abs;
 
         if(arg.contains("center")){
-            abs = Coordinates.getWorldCoordinates(new Vector2D(position.x - size.x / 2, position.y - size.y / 2));
+            abs = Coordinates.getWorldCoordinates(getCenterPosition());
         } else {
             abs = Coordinates.getWorldCoordinates(position);
         }
@@ -147,53 +149,55 @@ public abstract class GameObject implements Drawable {
         g2d.rotate(-rotation, xCenterAbs, yCenterAbs);
     }
 
+    /**
+     * Destroy this {@code GameObject}
+     */
     public void destroy() {
         master.destroy(this);
     }
 
 
     /**
-     * Returns the value as map coords (only called on a parent)
-     * @param value
-     * @return
+     * Returns the value as map coords
+     * @param value The value relative to the parent
+     * @return The value in global map coordinates
      */
     public Vector2D getMapCoords(Vector2D value) {
-        double x = position.x + value.x;
-        double y = position.y + value.y;
-        return new Vector2D(x, y);
+        double x = parent.position.x + value.x;
+        double y = parent.position.y + value.y;
+        return parent.getMapCoords(new Vector2D(x, y));
     }
 
+
     /**
      * Returns the value as world coordinates (only called on a parent)
-     * @param value
-     * @return
+     * @param value The value relative to the parent
+     * @return The absolute world coordinates
      */
     public Vector2D getWorldCoordsFromLocal(Vector2D value) {
         return Coordinates.getWorldCoordinates(getMapCoords(value));
     }
 
     /**
-     * Get world coords of a value (called on itself)
-     * @param value
-     * @return
+     * Get the center position of the object
+     * @return The center position
      */
-    public Vector2D getWorldCoords(Vector2D value){
-        return parent.getWorldCoordsFromLocal(value);
-    }
-
-
-    public Vector2D getCenterPosition(Vector2D position){
+    public Vector2D getCenterPosition(){
         return new Vector2D(position.x + size.x / 2, position.y + size.y / 2);
     }
 
-    public Vector2D getCenterPosition() {
-        return getCenterPosition(position);
-    }
-
+    /**
+     * Get the render layer of the object
+     * @return The render layer
+     */
     public int getLayer() {
         return layer;
     }
 
+    /**
+     * Get the rotation of the object as a Vector2D
+     * @return The rotation
+     */
     protected Vector2D getV2DRotation(){
         return Vector2D.getUnitVector(rotation);
     }

src/main/java/core/objects/core/MapAnchor.java

@@ -0,0 +1,30 @@
+package core.objects.core;
+
+import core.math.Vector2D;
+
+import java.awt.*;
+
+/**
+ * The {@code mapAnchor} objects is the default parent of every new {@code GameObject}.
+ */
+public class MapAnchor extends GameObject {
+
+    public MapAnchor() {
+        super(new Vector2D(0, 0), new Vector2D(0, 0));
+    }
+
+    @Override
+    public void draw(Graphics2D g2d) {
+
+    }
+
+    @Override
+    public void update() {
+
+    }
+
+    @Override
+    public Vector2D getMapCoords(Vector2D value) {
+        return value.copy();
+    }
+}

src/main/java/objects/ships/Turret.java

@@ -40,7 +40,7 @@ public class Turret extends GameObject {
     @Override
     public void draw(Graphics2D g2d) {
         g2d.setPaint(mainColor);
-        Vector2D abs = parent.getWorldCoordsFromLocal(position);
+        Vector2D abs = getWorldCoordsFromLocal(position);
         int sizeAbs = (int) Coordinates.getWorldCoordinates(size).x;
         int xCenterAbs = (int) (abs.x + sizeAbs / 2);
         int yCenterAbs = (int) (abs.y + sizeAbs / 2);
@@ -77,7 +77,7 @@ public class Turret extends GameObject {
 
         Point msLoc = master.getMouseLocation();
         Vector2D mouseRel = Coordinates.getMapCoordinatesFromWorld(Vector2D.fromPoint(msLoc)); //100 correct
-        Vector2D centerMap = parent.getMapCoords(getCenterPosition());
+        Vector2D centerMap = getMapCoords(getCenterPosition());
         double targetRotation = -Math.atan2(centerMap.x - mouseRel.x, centerMap.y - mouseRel.y);
 
         rotation = ExMath.angleLerp(rotation, targetRotation, ROTATION_SPEED);
@@ -88,7 +88,7 @@ public class Turret extends GameObject {
             int barrelX = (int) (position.x + (i + 1) * barrelSpacing);
             int frontPosY = (int) (position.y - size.x / 2);
 
-            Vector2D spawnPosNR = parent.getMapCoords(new Vector2D(barrelX, frontPosY));
+            Vector2D spawnPosNR = getMapCoords(new Vector2D(barrelX, frontPosY));
 
             if (Input.isMousePressed()) {
                 lastShot = System.currentTimeMillis();