import java.applet.*;
import java.awt.*;


public class BasicApplet extends Applet {
	private static final long serialVersionUID = 1L;

	private final int FACTOR = 3;
	private final int BORDER = 16;


	private final float sunR = 1.0f;
	private final float sunG = 1.0f;
	private final float sunB = 1.0f;
	private final float moonR = 0.0f;
	private final float moonG = 0.0f;
	private final float moonB = 0.2f;

	private final int DAYLIGHT_TICKS = 24000;
	private int time = 15000;

	public void init()
	{
		setSize(2*BORDER+16*16*FACTOR, 2*BORDER+16*16*FACTOR);
		setBackground(Color.WHITE);
	}

	public void paint(Graphics p)
	{
		for (int r=0; r<16; r++) {					//X
			for (int sun=0; sun<16; sun++){			//Y
				for (int b=0; b<16; b++) { 			//x
					for (int g=0; g<16; g++) {		//y

						setColor(p,sun,r,g,b,time);

						//p.fillRect((b*16*FACTOR+sun*FACTOR),(16*16*FACTOR-r*16*FACTOR-g*FACTOR-FACTOR),FACTOR,FACTOR);
						p.fillRect((BORDER + g*16*FACTOR+r*FACTOR),(BORDER + 16*16*FACTOR-sun*16*FACTOR-b*FACTOR),FACTOR,FACTOR);
					}
				}
			}
		}
		time+=250;
		if (time > DAYLIGHT_TICKS)
			time = 0;
		System.out.println(time);

		try {
			Thread.sleep(300);
		} catch (InterruptedException e) {
			e.printStackTrace();
		}

		repaint();
	}

	public void setColor(Graphics p, int sun, int cr, int cg, int cb, int time) {
		float dayMultiplier = Math.abs((float)Math.abs(time-3000)-12000)/12000;
		float nightMultiplier = Math.abs((float)Math.abs(time-15000)-12000)/12000;
		float s = (float)sun/15f;
		s = s*s;   //BAM!
		float r = s*(sunR*dayMultiplier + moonR*nightMultiplier) + (float)cr/16f;
		float g = s*(sunG*dayMultiplier + moonG*nightMultiplier) + (float)cg/17f;
		float b = s*(sunB*dayMultiplier + moonB*nightMultiplier) + (float)cb/15f;

		if (r>1.0f)
			r = 1.0f;
		if (r<0.0f)
			r = 0.0f;
		if (g>1.0f)
			g = 1.0f;
		if (g<0.0f)
			g = 0.0f;
		if (b>1.0f)
			b = 1.0f;
		if (b<0.0f)
			b = 0.0f;

		p.setColor(new Color(r,g,b));
	}
}