import greenfoot.*;  // (World, Actor, GreenfootImage, Greenfoot and MouseInfo)

/**
 * This is the character in which the player controls.
 * Within this class, most of the interactive features can be found.
 * This class contains code which reacts to the "BadGuy" class and the "Bullet" Class.
 */
public class Main2 extends Character
{
    GifImage Idle = new GifImage("Frame0.gif"); // Grabs GIF files and plays them when certain buttons are pressed.
    GifImage WalkRight = new GifImage("Walk0.gif");
    GifImage WalkLeft = new GifImage("WalkL0.gif");
    GifImage Fire = new GifImage("FireFrameRight.gif");
    GifImage FireLeft = new GifImage("FireFrameLeft.gif");
    GifImage Jump = new GifImage("Jump.gif");
    private GreenfootImage[] images=new GreenfootImage[27];
    private int jeda=10,num=0,deltax=30,speed=10;
    private int timer;
    private int vSpeed = 10;
    private int acceleration = 10;
    private int jumpStrength = 18;

    private int jtimer = 0;
    //public GreenfootImage image = getImage();

    /**
     * After "Run" is clicked, the 'checkKeys' function constantly checks for what keys are being pressed
     * and if the key pressed has a corresponding function to it.
     */
    public void act()  //Event Loop, this is a loop as it's constantly checking for something to happen.
    {
        for(int i=0;i<1;i++) {
            setImage(Idle.getCurrentImage()); // Changes the image of the actor in order to create an animation.
        } 
        timer++;
        jtimer++;
        fall();
        checkFall();
        checkKeys();
    }  

    /**
     * Whenever key 'A' is held, the actor will move left. When holding 'Shift' whilst also holding 'A' this will increase speed. This will also play an animation.
     * Whenever key 'D' is held, the actor will move right. When holding 'Shift' whilst also holding 'D' this will increase speed. This will also play an animation.
     * Whenever the space bar is pressed, the actor will jump and then fall after a certain period of time.
     * Whenever key 'E' is pressed, a bullet will spawn on the right and an animation will play.
     * Whenever key 'Q' is pressed, a bullet will spawn on the left and an animation will play.
     */
    public void checkKeys()
    {
        if (Greenfoot.isKeyDown("e")) //Trigger Function
        {
            for(int i=0;i<1;i++) {
                setImage(Fire.getCurrentImage());
            } 
            shoot();
        }    
        if (jtimer > 0)
        {
            if (Greenfoot.isKeyDown("space") ) //Trigger Function
            {
                for(int i=0;i<1;i++) {
                    setImage(Jump.getCurrentImage());
                    jump();
                    jtimer++;
                }
                if (jtimer > 0)
                {
                    jtimer = 0;
                } 
            } 
        }
        if ( Greenfoot.isKeyDown("d") ) //This is a trigger function because it responds to user input.
        {
            for(int i=0;i<8;i++) {
                setImage(WalkRight.getCurrentImage());
                move(1);
            }
        }
        if ( Greenfoot.isKeyDown("a")) //Trigger Function
        {
            for(int i=0;i<8;i++) {
                setImage(WalkLeft.getCurrentImage());
                move(-1);
            }
        }
        if (Greenfoot.isKeyDown ("shift") && Greenfoot.isKeyDown("d")) //Trigger Function
        {
            move (3);
        } 
        if (Greenfoot.isKeyDown ("shift") && Greenfoot.isKeyDown("a")) //Trigger Function
        {
            move (-3);
        } 
        if (Greenfoot.isKeyDown ("q")) //Trigger Function
        {
            for(int i=0;i<1;i++) {
                setImage(FireLeft.getCurrentImage());
            }
            shootleft();
        } 
    }

    /**
     * This allows the player to run and jump at the same time. This will also play an animation when jumping.
     * After the jump has been activated after a certain period of time, it will begin to fall.
     * When the spacebar is pressed the actor's x and y coordinates will increase creating a jumping animation.
     */
    public void jump()
    {
        vSpeed = jumpStrength;
        fall();
        setImage(images[0]); 
    }

    /**
     * When pressing "Q", this will add a bullet into the world which will travel in the left direction.
     */
    public void shootleft()
    {
        if (timer > 30){
            getWorld() .addObject(new LeftBullet(), getX(), getY());
            timer = 0;
        }
    }  

    /**
     * Event Loop, constantly checking for if the character is on the "Ground" class.
     */
    public boolean onGround()
    {
        // Actor under = getOneObjectAtOffset( 0, getImage().getHeight() / 2-8, GroundMain.class);
        Actor under = getOneIntersectingObject(GroundMain.class);
        return under != null;
    }

    /**
     * Event Loop, constantly checking for if the characters X and Y coordinates to check if the character is in the air.
     * If true, the character will fall and stop falling when touching "Ground" class.
     */
    public void checkFall() 
    {
        if(onGround()) {
            vSpeed = 0;
        }   
        else {
            fall();
        }
    }

    public void shoot()
    {
        if (timer > 30){
            getWorld() .addObject(new Bullet(), getX(), getY());
            timer = 0;
        }
    }  

    /**
     * When the player is in the air, the x and y coordinates will decrease and an animation will play.
     */
    public void fall()
    {
        setLocation (getX(), getY() + vSpeed);
        vSpeed = vSpeed + acceleration;
    }
}