/**
 * 
 */
package ei.engine.scene;

import org.lwjgl.opengl.GL11;

import ei.engine.math.Vector2f;
import ei.engine.math.Vector3f;

/**
 * This class is the root class of all the objects that
 * will show on the scrren. This class handles the position
 * and rotation and the colitions of the objects.
 * @author Ziver
 */
public abstract class Entity {
	/** The name of this sprite */
	private String name;  
	
	/** The location of this entity in pixels*/
	private Vector2f location;	
	  
	/** The rotation of this entity in pixels*/
	private Vector3f rotation;
	
	/** The size of this entity in pixels*/
	private Vector2f size;
	
	/**
	 * creates a new entity
	 * 
	 * @param name The name of the entity
	 */
	public Entity(String name){
		this.name = name;
		location = new Vector2f();
		rotation = new Vector3f();
		size = new Vector2f();
	}
	
	/**
	 * @return The name of the entity
	 */
	public String getName() {
		return name;
	}

	/**
	 * Get the Location of the entity
	 * 
	 * @return The Location of the entity
	 */
	public Vector2f getLocation() {
		return location;
	}
	
	/**
	 * set the location of this entity in pixels
	 * 
	 * @param l The location of the entity
	 */
	public void setLocation(Vector2f l) {
		location = l;
	}
	
	/**
	 * Get the rotation of the entity
	 * 
	 * @return The Location of the entity
	 */
	public Vector3f getRotation() {
		return rotation;
	}
	
	/**
	 * set the rotation of this entity in pixels
	 * 
	 * @param r The rotation of the entity
	 */
	public void setRotation(Vector3f r) {
		rotation = r;
	}
	
	/**
	 * Get the size of the entity
	 * 
	 * @return The Location of the entity
	 */
	public Vector2f getSize() {
		return size;
	}
	
	/**
	 * set the size of this entity in pixels
	 * 
	 * @param s The size of the entity
	 */
	public void setSize(Vector2f s) {
		size = s;
	}

	/**
	 * Sets the location of the entity in opengl
	 * before rendering.
	 */
	protected void setTranslationGL(){
		// translate to the right location and prepare to draw
		GL11.glTranslatef(location.getX(), location.getY(), 0);
	}
	
	/**
	 * Sets the location of the entity in opengl plus
	 * the parameter values before rendering.
	 * 
	 * @param x The value to add x
	 * @param y The value to add y
	 */
	protected void setTranslationGL(float x, float y){
		// translate to the right location and prepare to draw
		GL11.glTranslatef(location.getX()+x, location.getY()+y, 0);
	}
	
	/**
	 * Sets the rotation of the entity in opengl
	 * before rendering.
	 */
	protected void setRotationGL(){
		// rotating the entity
        GL11.glRotatef(rotation.getX(), 1.0f, 0.0f, 0.0f); // Rotate On The X Axis
        GL11.glRotatef(rotation.getY(), 0.0f, 1.0f, 0.0f); // Rotate On The Y Axis
        GL11.glRotatef(rotation.getZ(), 0.0f, 0.0f, 1.0f); // Rotate On The Z Axis
	}
	
	/**
	 * the render method should be implemented for every entity
	 */
	public abstract void render();
	
	/**
	 * the update method can be implemented for every entity
	 */
	public void update(){}
}