// Cloned by Heejin Yoon on 26 Sep 2023 from World "One Cube World (Three.js)" by Starter user 
// Please leave this clone trail here.
 

const skyColour         = 'cornflowerBlue';           
const boxColour         = 'HotPink';

const objectSize    = 450;                  // size of object

const anotherObjectSize = 300;              // size of another dimensions to change the shape

const startRadius   = 1200;                 // distance from centre we start the camera at

const maxRadius     = startRadius * 5;     // maximum distance from camera we render things 


// the object is a cube (each dimension equal): 
  
var shape       = new THREE.BoxGeometry ( anotherObjectSize, objectSize, objectSize );
var material    = new THREE.MeshBasicMaterial ( { color: boxColour.toLowerCase() } );
var theobject   = new THREE.Mesh ( shape, material );


// Define what the World does at the start of a run: 

AB.world.newRun = function() 
{
    // start a 3D scene: 
    ABWorld.init3d ( startRadius, maxRadius, skyColour ); 

    // add the object to the scene:
    ABWorld.scene.add ( theobject );
    
    // paint the cube:
    const imageFile = '/uploads/heejin96/1695749657.png';
    var loader = new THREE.TextureLoader();
    
    loader.load (imageFile, function( theTexture ) {
        // This defines a function to be called whenever the file is loaded
        theTexture.minFilter = THREE.LinearFilter;
        theobject.material = new THREE.MeshBasicMaterial ({ map: theTexture });
    });
    
    // add some background music
    const MUSICFILE = '/uploads/heejin96/BTS-BTSFAKELOVE.mp3';
    AB.backgroundMusic (MUSICFILE);
};

AB.world.nextStep = function() {
    // Define the target position for the object to smoothly move towards
    var targetX = theobject.position.x + AB.randomIntAtoB(-150, 150);
    var targetY = theobject.position.y + AB.randomIntAtoB(-30, 30);
    var targetZ = theobject.position.z + AB.randomIntAtoB(-60, 60);
    
    // Define the speed at which the object should move
    var speed = 2.0; // Adjust this value to control the speed of movement
    
    // calculate the new position of the object based on linear interpolation
    theobject.position.x = AB.lerp(theobject.position.x, targetX, speed);
    theobject.position.y = AB.lerp(theobject.position.y, targetY, speed);
    theobject.position.z = AB.lerp(theobject.position.z, targetZ, speed);
    
    // Ensure the object does not move too far on left or right
    theobject.position.x = Math.min(Math.max(theobject.position.x, -150), 150);
    theobject.position.y = Math.min(Math.max(theobject.position.y, -30), 30);
    theobject.position.z = Math.min(Math.max(theobject.position.z, -60), 60);
};

// Linear interpolation function 
AB.lerp = function(start, end, speed) {
    return start + (end - start) * speed;
};