// animation
let playerAnim = [];
let tomAnim = [];
let enemyAnim = [];
//player
let playerAnimState = 0;
let runDirection = 0;
let runSpeed = 18;
let animationSpeed = 50;
let currentPosition = 0;
let player = document.querySelector("#fuchs");
let playerSprite = document.querySelector("#fuchs img");
let dIsPressed = false;
let aIsPressed = false;
let runAnimation;
// Map
const boxBorderLeft = -40;
const boxBorderRight = 840;

fillArrays();
startAnimation();
//currentPosition = window.getComputedStyle(player).left;

// Pictures
function fillArrays()
{
    fillArray("fuchs_", 8, playerAnim);
    fillArray("tom_", 3, tomAnim);
    fillArray("enemy_",3, enemyAnim);
}

// startGame
let start = setInterval(gameLoop, 50);

function gameLoop()
{
    move();
}

//-------------------------------------------------------------- Animation -----------------------------------------------------------------------
function startAnimation()
{
    runAnimation = setInterval(playerRunAnim, animationSpeed);
}

function playerRunAnim()
{
    if(playerAnimState == 8)
    {
         playerAnimState = 0;
    }
    playerSprite.src = playerAnim[playerAnimState];
    playerAnimState++;
}

//------------------------------------------------------------- checkInput ------------------------------------------------------------------
document.addEventListener('keydown', function(event) {
    if(event.key == "d")
    {
        if(runDirection != 1)
        {
            playerSprite.style.transform = 'scaleX(1)';
        }
        runDirection = 1;
        dIsPressed = true;
    }
    else if(event.key == "a")
    {
        if(runDirection != -1)
        {
            playerSprite.style.transform = 'scaleX(-1)';
        }
        runDirection = -1;
        aIsPressed = true;
    }
});

document.addEventListener('keyup', function(event)
{
    if(event.key == "d")
    {
        dIsPressed = false;
    }
    else if(event.key == "a")
    {
        aIsPressed = false;
    }

    if(!aIsPressed && !dIsPressed)
    {
        runDirection = 0;
    }
});

//---------------------------------------------------------- Move Player ------------------------------------------------------------
function move()
{
    let nextPosition = currentPosition + runDirection * runSpeed;
    if(nextPosition > boxBorderLeft && nextPosition < boxBorderRight)
    {
        currentPosition = nextPosition;
    }
    player.style.left =  currentPosition + "px";
}