entity-editor/src/gui/render/HitboxRectengleRenderingFunction.java

package gui.render;

import java.awt.AlphaComposite;
import java.awt.BasicStroke;
import java.awt.Graphics2D;
import java.awt.event.MouseEvent;
import java.time.LocalTime;
import java.util.ArrayList;
import java.util.List;

import events.EntityHitboxChangedEvent;
import events.EntityHitboxChangedListener;
import model.Entity;
import model.Hitbox;
import model.HitboxRectangle;
import model.Point;

public class HitboxRectengleRenderingFunction implements ShapeRenderingFunction {

	Point firstIsoPoint = null;
	Point currentIsoPoint = new Point(0,0);
	Point firstCartesianPoint = new Point(0,0), currentCartesianPoint = new Point(0,0);
	private List<EntityHitboxChangedListener> listeners = new ArrayList<>();
	Entity entity;
	private List<Point> LocalListPointsIso = new ArrayList<Point>();
	private List<Point> LocalListPointsCartesian = new ArrayList<Point>();
	private float scaleIndex = 1;
	Point centeringImage;
	
	public List<Point> getLocalListPointsIso() {
		return LocalListPointsIso;
	}
	
	public List<Point> getLocalListPointsCartesian() {
		return LocalListPointsCartesian;
	}
	
	private void setFirstIsoPointIsNull(){
		firstIsoPoint = null;
	}
	
	@Override
	public void drawing(Graphics2D g) {
		AlphaComposite composite = AlphaComposite.getInstance(AlphaComposite.SRC_OVER, 0.9f);
        g.setComposite(composite);
        g.setStroke(new BasicStroke(2));
		scaleIndex = entity.getScaleIndex();
		HitboxRectangle nowHitbox = (HitboxRectangle)entity.getHitbox();
		if(nowHitbox.getListPointsIso().size() == 4) {
			drawingLinesFromListPoints(nowHitbox.getListPointsIso(),g);
		}
		if(firstIsoPoint!=null&&nowHitbox.getListPointsIso().size() == 0) {
			drawingLinesFromListPoints(LocalListPointsIso,g);
		}
		
	}
	
	public void drawingLinesFromListPoints(List<Point> listPointsIso, Graphics2D g) {
		int x1,y1,x2,y2;
			int size = listPointsIso.size();
			for(int i = 0; i < size;i++) {
	            x1 = (int)listPointsIso.get(i % size).x;
	            y1 = (int)listPointsIso.get(i % size).y;
	            x2 = (int)listPointsIso.get((i+1) % size).x;
	            y2 = (int)listPointsIso.get((i+1) % size).y;
	            g.drawLine((int)(x1*scaleIndex+centeringImage.x), (int)(y1*scaleIndex+centeringImage.y), (int)(x2*scaleIndex+centeringImage.x), (int)(y2*scaleIndex+centeringImage.y));
	            System.out.println("x = "+x1*scaleIndex+centeringImage.x+"|| y = "+y1*scaleIndex+centeringImage.y);
	        }
			x1 = (int)listPointsIso.get(0).x;
            y1 = (int)listPointsIso.get(0).y;
            x2 = (int)listPointsIso.get(3).x;
            y2 = (int)listPointsIso.get(3).y;
            g.drawLine((int)(x1*scaleIndex+centeringImage.x), (int)(y1*scaleIndex+centeringImage.y), (int)(x2*scaleIndex+centeringImage.x), (int)(y2*scaleIndex+centeringImage.y));
	}

	@Override
	public void mousePressed(MouseEvent e) {
		//System.out.println("mousePressed");
		//System.out.println("mouseClicked");
		HitboxRectangle nowHitbox = (HitboxRectangle)entity.getHitbox();
		if(nowHitbox.getListPointsIso().size() == 0 && firstIsoPoint == null) {
			initListsPoints();
			firstIsoPoint = new Point(currentIsoPoint.x,currentIsoPoint.y);
			LocalListPointsIso.get(0).setXY(firstIsoPoint.x, firstIsoPoint.y);
			firstCartesianPoint = Hitbox.isometricToCartesian(firstIsoPoint.x, firstIsoPoint.y,firstCartesianPoint);
			LocalListPointsCartesian.get(0).setXY(firstCartesianPoint.x, firstCartesianPoint.y);
			System.out.println("mouseClicked Event 1 TIME: "+LocalTime.now());
		}else if(nowHitbox.getListPointsIso().size() == 0 && firstIsoPoint != null) {
			nowHitbox.getListPointsIso().addAll(LocalListPointsIso);
			nowHitbox.getListPointsCartesian().addAll(LocalListPointsCartesian);
			System.out.println("mouseClicked Event 2 TIME: "+LocalTime.now());

			notifySubscribers();
			//очистка кэша
			firstIsoPoint = null;
			LocalListPointsIso.clear();
			LocalListPointsCartesian.clear();
			
		}
	}

	@Override
	public void mouseMoved(MouseEvent e) {
		currentIsoPoint.x = (e.getX()-centeringImage.x)/scaleIndex;
		currentIsoPoint.y = (e.getY()-centeringImage.y)/scaleIndex;

		System.out.println("currentIsoPoint.x = "+currentIsoPoint.x);
		System.out.println("currentIsoPoint.y = "+currentIsoPoint.y);
		HitboxRectangle nowHitbox = (HitboxRectangle)entity.getHitbox();
		if(entity!=null) {
			if(firstIsoPoint != null && nowHitbox.getListPointsIso().size() == 0) {
				//System.out.println("firstPoint("+firstIsoPoint.x+";"+firstIsoPoint.y+");");
				currentCartesianPoint = Hitbox.isometricToCartesian(currentIsoPoint.x, currentIsoPoint.y, currentCartesianPoint);
				LocalListPointsCartesian.get(0).setXY(firstCartesianPoint.x, firstCartesianPoint.y);
				LocalListPointsCartesian.get(1).setXY(currentCartesianPoint.x, firstCartesianPoint.y);
				LocalListPointsCartesian.get(2).setXY(currentCartesianPoint.x, currentCartesianPoint.y);
				LocalListPointsCartesian.get(3).setXY(firstCartesianPoint.x, currentCartesianPoint.y);
				convertCartesianPointsToIso();
			}
		}
	}

	public void setEntityInHitboxRectengle(Entity e) {
		entity = e;	
	}

	public void subscribe(EntityHitboxChangedListener listener) {
        listeners.add(listener);
	}
	
	public void unsubscribe(EntityHitboxChangedListener listener) {
        listeners.remove(listener);
	}
	
	private void notifySubscribers() {
		for (EntityHitboxChangedListener listener : listeners) {
			listener.hitboxChanged(
				new EntityHitboxChangedEvent(entity.getHitbox(), entity)
			);
		}
	}
	
	public void initListsPoints() {
		if(LocalListPointsIso.size()<1) {
			for(int i=0;i<4;i++) { 
				LocalListPointsIso.add(new Point(currentIsoPoint.x,currentIsoPoint.y));
			}	
		}
		if(LocalListPointsCartesian.size()<1) {
			for(int i=0;i<4;i++) { 
				LocalListPointsCartesian.add(new Point(0,0));
			}	
		}
	}
	public void convertCartesianPointsToIso() {
		Point cartesianPoint;
		for (int i = 0 ; i<4;i++) {
			cartesianPoint = LocalListPointsCartesian.get(i);
			Hitbox.cartesianToIsometric(cartesianPoint.x,cartesianPoint.y,LocalListPointsIso.get(i));
		}
	}

	public void setCenteringImagePoint(Point p) {
		centeringImage = p;
	}
	@Override
	public void functionClearJButton() {
		HitboxRectangle nowHitbox = (HitboxRectangle)entity.getHitbox();
		nowHitbox.getListPointsIso().clear();
		nowHitbox.getListPointsCartesian().clear();
		LocalListPointsCartesian.clear();
		LocalListPointsIso.clear();
		setFirstIsoPointIsNull();
	}
	
}