// Nibbler agent demonstrates how to implement behaviour, check and alter an environment, and communicate with other agents using method calls.
// The nibbler will move around randomly and nibbles down any Environmental data.
// Note that the spatial x and y details are inherited from 'Animal'. 

public class Nibbler extends Animal {

	
	
	
	// Constructor. Sets a random x and y based on current world size, but 
	// otherwise defers to Animal.
	
	public Nibbler (Environment worldIn) {
	
		super(worldIn);
		x = (int)(Math.random() * world.getWidth());
		y = (int)(Math.random() * world.getHeight());

	}
	
	
	

	public void run () {
	
		move();
		interactWithEnvironment();
		
	}
	
	
	
	private void move() {
	
		int x = 0;
		do {
			x = this.x;
			double randomNumber = Math.random();
			if (randomNumber < 0.33) x--;
			if (randomNumber > 0.66) x++;
		} while ((x < 0) || (x > world.getWidth() - 1));
		this.x = x;
			
		int y = 0;
		do {
			y = this.y;
			double randomNumber = Math.random();
			if (randomNumber < 0.33) y--;
			if (randomNumber > 0.66) y++;
		} while ((y < 0) || (y > world.getHeight() - 1));
		this.y = y;
		
	}
	
	
	

	private void interactWithEnvironment () {
	
		if (world.getDataValue(x, y) > 10) {
			world.setDataValue(x, y, world.getDataValue(x, y) - 10);
		} else {
			world.setDataValue(x, y, 0);
		} 
		
	}

	
}