// Cloned by MENGTE ZHU on 29 Nov 2022 from World "Pacman (clone by junhao zhao)" by junhao zhao 
// Please leave this clone trail here.
 
AB.drawRunControls = false;
threeworld.drawCameraControls = false;

// World must define these:
 
const	 	CLOCKTICK 	= 100;			// speed of run - move things every n milliseconds, lower faster
const		MAXSTEPS 	= 10000;			// length of a run before final score
 
const  SCREENSHOT_STEP = 50;    


// -- constants for normal or special pellets to be added to screen
const NORMAL = true;
const SPECIAL = false;



//---- global constants: -------------------------------------------------------

const gridsize = 20;						// number of squares along side of world	   

// density of maze - number of internal boxes
// (bug) use trunc or can get a non-integer 

const squaresize = 100;					// size of square in pixels
const MAXPOS = gridsize * squaresize;		// length of one side in pixels 

const sphereRadius = 90;
const sphereHeight = 10;
const sphereWidth = 10;

const pelletRadius = 10;

const SKYCOLOR 	= 0x000000;				// a number, not a string 
const BLANKCOLOR 	= SKYCOLOR ;			// make objects this color until texture arrives (from asynchronous file read)




const show3d = true;						// Switch between 3d and 2d view (both using Three.js) 
 
 // ********** originally = 0.8 ***************//
const startRadiusConst	 	= MAXPOS * 0.8 ;		// distance from centre to start the camera at


// it's an illusion, if you zoom out you see theat the skybox is just a container and outside of that is nothing
const skyboxConst			= MAXPOS * 3 ;		// where to put skybox 
const maxRadiusConst 		= MAXPOS * 8 ;		// maximum distance from camera we will render things  





//--- Mind can pick one of these actions -----------------

const ACTION_LEFT 		= 0;		   
const ACTION_RIGHT 		= 1;
const ACTION_UP 			= 2;		 
const ACTION_DOWN 		= 3;
const ACTION_STAYSTILL 		= 4;

// in initial view, (smaller-larger) on i axis is aligned with (left-right)
// in initial view, (smaller-larger) on j axis is aligned with (away from you - towards you)



// contents of a grid square

const GRID_BLANK 	= 0;
const GRID_WALL 	= 1;
const GRID_MAZE 	= 2;

 // keyword self used for a private function to call a public function self.functionName()
 

// --- some useful random functions  -------------------------------------------
function World() { 



var LEVEL = [
    '# # # # # # # # # # # # # # # # # # # #', // 1
    '# . . . # . . . . . # . . . . . . . . #', // 2
    '# . # # # . . # . # # . . . . # . . . #', // 3
    '# # . . . . . . . . . . . . . # . . - #', // 4
    '# . # # . . . # # # # . # # # # . # . #', // 5
    '# . # # . . . . . . . . . . . . . # . #', // 6
    '# . # # . . # . . . # . # # . # . . . #', // 7
    '# . . # . . # . . . . . . # . . . # . #', // 8
    '# . . . . . . . . . # . # # . . . . . #', // 9
    '# . # # # . . . . . # . . # . . # . . #', // 10
    '# . # . # . . . . # # . . . . . # # # #', // 11
    '# . . . . . . . - . . . . . . . . . . #', // 12
    '# # . # # # . . . . # # . # # . . . . #', // 13
    '# . . . . . . . . # # . . . . . # . . #', // 14
    '# . # . . . . . . . . . . . . . . . . #', // 15
    '# # . . . . . . . # . . # . . # . . - #', // 16
    '# . # . . # # # . # . . # . . # . . . #', // 17
    '# # # . . . # . . # . . # . # # . . . #', // 18
    '# / . . # . . . . . . . . . . . . . . #', // 19
    '# # # # # # # # # # # # # # # # # # # #'  // 20
    ];//地图初始化
    var numPellets = 0;    // counts the number of pellet objects on the screen, used for removal of pellets
    var BOXHEIGHT;		// 3d or 2d box height 
    var GRID 	= new Array(gridsize);			// can query GRID about whether squares are occupied, will in fact be initialised as a 2D array
    function initGrid()
    {
        for (var i = 0; i < gridsize ; i++) {
        GRID[i] = new Array(gridsize);		// each element is an array 
            for (var j = 0; j < gridsize ; j++) {
            GRID[i][j] = GRID_BLANK ;
            }
        }
    }
    function occupied ( i, j ){		// is this square occupie
        if ( GRID[i][j] == GRID_WALL ) return true;		// fixed objects, walls and stones	 
        if ( GRID[i][j] == GRID_MAZE ) return true;		 
        return false;
    }
    function occupiedByPellet(i, j) {

        if (isSpecialPellet(i, j)) {         // start of ghost killer mode if true
            ghostKiller = true;
            playIntermissionSound();
            threeworld.scene.remove(GRID[i][j]);
            GRID[i][j] = GRID_BLANK;
            numPellets--;
            window.setTimeout(slowAlert, 5000); // after 5 seconds pacman can no longer kill ghosts
             
        }
    }



}