public boolean testHit(int x_guess, int y_guess){
		for(byte i = 0; i < this.shipSize; i++){
			if(this.shipCoordinates[i][0] == x_guess && this.shipCoordinates[i][1] == y_guess){
				this.markHit(i);
				return true;
			}
		}
		return false;
	}