package uu.mal.skate.view;

import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics;

import javax.swing.JPanel;

import uu.mal.skate.model.Agent;
import uu.mal.skate.model.Options;
import uu.mal.skate.model.Simulation;

public class SkatingSurface extends JPanel {
	
	private static final long serialVersionUID = 1L;

	private final Options options;
	
	public static final Color BACKGROUND_COLOR = Color.WHITE;
	public static final Color GRID_COLOR = Color.LIGHT_GRAY;
	public static final double GRID_SIZE = 50;
	
	private Agent[] agents;

	public SkatingSurface(Simulation sim) {
		this.agents = sim.getAgents();
		this.options = sim.getOptions();	
		

		setPreferredSize(new Dimension(options.torusWidth, options.torusHeight));
	}

	@Override
	protected void paintComponent(Graphics g) {
		super.paintComponent(g);
		
		int w = options.torusWidth;
		int h = options.torusHeight;
		
		g.setColor(BACKGROUND_COLOR);
		g.clearRect(0, 0, w, h);
		
		g.setColor(GRID_COLOR);
		int nrOfVerticalLines = (int) (w / GRID_SIZE);
		int nrOfHorizontalLines = (int) (h / GRID_SIZE);
		
		for(int i = 1; i < nrOfHorizontalLines; i ++) {
			int x = (int) (i * GRID_SIZE);
			g.drawLine(0, x, w, x);
		}
		for(int i = 1; i < nrOfVerticalLines; i ++) {
			int y = (int) (i * GRID_SIZE);
			g.drawLine(y, 0, y, h);
		}
		
		if(agents != null)
			for(Agent a : agents) {
				a.draw(g);
			}
	}
}