Grid

package com.alt2;


import java.util.ArrayList;


/*
 Represents our grid. This would ease further implementation. If
 we were to add additional robots, or wanted to add other objects to the
 grid.
 */
public class Grid {

    Robot[][] grid = new Robot[5][5]; // Initalize a 5x5 grid that can store robots.
    Robot robot = new Robot(0, 0, 90); // adding a robot to the southwest of our grid, facing north.

    public Grid() {
    }


    /*
    Method for itterationg over our list of arguments.
     Spliting the arguments when necessary.

     */
    public void handleCommand(ArrayList<String> commands) {

        boolean robotPlaced = false;

        for (String arg : commands) {
            if (arg.contains("PLACE")) {

                String[] arrOfStr = arg.split(" ", 2);

                String[] values = arrOfStr[1].split(",", 3);


                if (checkValidPlacement(Integer.parseInt(values[0]), Integer.parseInt(values[1]))) {
                    robot.place(Integer.parseInt(values[0]), Integer.parseInt(values[1]), values[2]);
                    robotPlaced = true;

                }

            }
            if (robotPlaced) {

                if (arg.equals("MOVE")) updateRobot();

                if (arg.equals("LEFT")) robot.rotate(-90);

                if (arg.equals("RIGHT")) robot.rotate(90);

                if (arg.equals("REPORT")) System.out.println(robot.print());

            }
            updateGrid();
        }

    }

    /*
        Updates the robots postion every time we issue a command.

     */
    public void updateGrid() {
        try {
            grid[robot.getPosX()][robot.getPosY()] = robot;

        } catch (Exception e) {
            grid[0][0] = robot;
        }

    }

    /*
        Method the will move our robot, we save our current valid postion
        before attempting a move. Checking if the placement is valid.
     */
    public void updateRobot() {

        int tempX = robot.getPosX();
        int tempY = robot.getPosY();

        robot.move();

        if (!checkValidPlacement(robot.getPosX(), robot.getPosY())) {
            System.out.println("Invalid move");
            robot.setPosX(tempX);
            robot.setPosY(tempY);
        }

    }


    public boolean checkValidPlacement(int x, int y) {

        if (x > grid.length || x < 0) {
            return false;
        }
        if (y > grid[0].length || y < 0) {
            return false;
        }

        return true;
    }


}