Brick game in actionscript

// ********* BRICK (aka ARKANOID) GAME ********* //
// Author: Broly 
// Contact : davb86@supereva.it
//
// Snippet made in May 2005 for the dream.in.code 
// spring.this('05') contest
//
// ********************************************** //
 
// ******************* DESCRIPTION ************************ //
//
// This snippet create a complete arkanoid-style game,
// the levels are made with XML files, the brick can have different
// colors and resistance. 
// The game is entirely generated                                               
// in Actionscript, so it's quite light (2 kb).
// The graphic is very minimal. 
//
// You can see an example of the game at
// http://www.brolyweb.com/Script/Brick/Brick_Alpha.html
// NOTE: This sample has only 2 levels.
//
// ******************************************************* //
 
// Attention: modifying the code you can cause
// some error. Modify with care :-p
// The parts you can/must modify for customize the game
// are signed
 
function brick(){
// Game field vars
gamefield_w = 300
stage_h = 400
panel_h = 40
 
// You can modify those vars for
// set the numbers of level (that must correspond to the .xml files, every level will have its .xml)
// and total lives.
total_levels = 2
lives = 3
 
 
// Graphic vars, you can modify for change the border 
// width, alpha and color
border_w = 3
border_color = 0x000000
border_alpha = 100
 
// As before, but for the pad (you can also set pad width and height)
pad_border_w = 1
pad_border_color = 0x000000
pad_border_alpha = 100
pad_color = 0xFF0000
pad_alpha = 70
pad_w = 50
pad_h = 10
 
 
// The available field is smaller, because we 
// leave some space between the pad (with the ball) and the bricks
// DON'T MODIFY
gamefield_h = stage_h - panel_h
available_field = gamefield_h - 100
 
// Those vars set the starting level and score
// You can modify them but it's recommended don't
currentlevel = 1
points = 0 
 
// This var is needed by the game, don't modify ordelete
ini_lives = lives
 
// This function generate the gamefield (borders and panel)
// following the values we setted in the graphic vars
// The function create also the text fields 
// for the panel (score, lives and level)
function generateGameField(){
     createEmptyMovieClip('borderup',-1)
     createEmptyMovieClip('bordersx',-2)
     createEmptyMovieClip('panel',-102)
     with(borderup){
          lineStyle(border_w,border_color,border_alpha)
          lineTo(gamefield_w,0)
     }
     with(bordersx){
          lineStyle(border_w,border_color,border_alpha)
          lineTo(0,gamefield_h)
     }
     with(panel){
          lineStyle(border_w,0x000000,100)
          beginFill(0x9999999,80)
          lineTo(gamefield_w,0)
          lineTo(gamefield_w,panel_h)
          lineTo(0,panel_h)
          lineTo(0,0)
          endFill()
          _y = gamefield_h
     }
     createTextField('score',-100,0,0,0,0)
     createTextField('lev',-101,0,0,0,0)
     createTextField('liv',-99,0,0,0,0)
     score.autoSize = true
     score.selectable = false
     score.text = "Score : " + points
     score._x = panel._x + 20
     score._y = panel._y + panel._height/2 - score._height/2
     lev.autoSize = true
     lev.selectable = false
     lev.text = "Level 1"
     lev._x = panel._x + panel._width - lev._width - lev._width/2
     lev._y = panel._y + panel._height/2 - lev._height/2
     liv.autoSize = true
     liv.text = "Lives left : " + lives
     liv._x = panel._x + panel._width/2 - liv._width/2
     liv._y = panel._y + panel._height/2 - liv._height/2
     duplicateMovieClip(borderup,'borderbottom',-4)
     duplicateMovieClip(bordersx,'borderdx',-5)
     borderbottom._y = gamefield_h
     borderdx._x = gamefield_w
}
 
// This function create the pad
// using the values we setted in the graphic vars for the pad
function createPad(){
     createEmptyMovieClip('pad',1)
     with(pad){
          lineStyle(pad_border_w,pad_border_color,pad_border_alpha)
          beginFill(pad_color,pad_alpha)
          lineTo(pad_w,0)
          lineTo(pad_w,pad_h)
          lineTo(0,pad_h)
          lineTo(0,0)
          endFill()
          _x = gamefield_w/2 - pad_w/2
          _y = gamefield_h - (pad_h+10)
          startDrag(this,false,_y,gamefield_w - pad_w,_y,0)
          }
          pad.onEnterFrame = function(){
               ball._x = pad._x + pad_w/2
     }
}
 
// This function will be called when the lives will be 0 
function gameOver(){
     createTextField('gover',getNextHighestDepth(),0,0,0,0,0)
     gover.autoSize = true
    gover.bold = true
    gover.selectable = false
     gover.text = "Sorry, game over." + newline + "Click for new game"
     gover._x = gamefield_w/2-gover._width/2
     gover._y = available_field/2 - gover._height/2
     g = new Object()
     g.onMouseDown = function(){
          lives = ini_lives
          liv.text = "Lives left: " + lives
          currentlevel = 1
          level(currentlevel)
          newball()
          delete this.onMouseDown
          gover.removeTextField()
     }
     Mouse.addListener(g)
}
 
// This function will be called when all the brick
// in a level will be destroyed
 
function endLevel(){
     createTextField('completed',getNextHighestDepth(),0,0,0,0,0)
     completed.autoSize = true
     completed.bold = true
     completed.selectable = false
     delete ball.onEnterFrame
     if(currentlevel<total_levels){
    completed.text = "Level " + currentlevel + " completed" + newline + "Click to start next level"
     l = new Object()
     l.onMouseDown = function(){
          completed.removeTextField()
          currentlevel++
          level(currentlevel)
          lev.text = "Level " + currentlevel
          newball()
          delete this.onMouseDown
          Mouse.removeListener(l)
     }
     Mouse.addListener(l)
     }else{
          completed.text = "You won! Congratulations!"
     }
     completed._x = gamefield_w/2-completed._width/2
     completed._y = available_field/2 - completed._height/2
}
 
// when the ball hit a brick, this function is called
// and check what bricks must be deleted
function removeBrick(who){
     speed_y = -speed_y
     points+= 100
     score.text = "Score : " + points
     who.res--
     if(who.res == 0) {
          who.removeMovieClip() 
          total_bricks--
          if(total_bricks==0){
               endLevel()
                  }
     }
}
 
// This function create the ball
function createBall(){
     radius = 4 // you can change this value for make the ball bigger or smaller, but is better leave it to 4
 
     // Those lines create the ball movieclip
     createEmptyMovieClip('ball',2)
     with(ball){
          lineStyle(0,0x000000,0)
        beginFill(0x000000,100)
          lineTo(0,radius)
         curveTo(radius,radius, radius, 0)
         curveTo(radius,-radius,0,-radius)
          curveTo(-radius,-radius,-radius,0)
          curveTo(-radius,radius,0,radius)
          endFill()
     // The ball is positioned over the pad
     _x = pad._x + pad_w/2
     _y = pad._y - _height/2
     }     
}
 
// We set a listener to the mouse so when the user
// click, the game begin
s = new Object()
s.onMouseDown = startgame
Mouse.addListener(s)
 
// This function let the game begin
function startgame(){
// We delete pad.onEnterFrame so the ball won't follow it
delete pad.onEnterFrame     
// We remove the listener so the user can click without cause errors
Mouse.removeListener(s)
// Set speed_x and speed_y for the ball. You can change this values
speed_x = 8
speed_y = -7
// Set the ball actions. Don't modify this lines.
ball.onEnterFrame = function(){
     // Move the ball
     this._y = this._y + speed_y
     this._x = this._x + speed_x
     // If the ball it a border, bounce
     this._x-this._width/2 <= bordersx._x || this._x+this._width>borderdx._x ? speed_x = -speed_x : null
     this._y-this._height/2 < borderup._y ? speed_y = Math.abs(speed_y) : null
     // If the ball fall, lose a live and start a newball
     if(this._y > borderbottom._y) {
          lives--
          liv.text = "Lives left: " + lives
          newball() 
     }
     // Check what brick delete
    colonna = int((this._x - brick_iniX) / brick_w)
     riga = int((this._y - brick_iniY) / brick_h)
if(this._y < 300){
     targetmc = eval("brick"+riga+"|"+colonna)
     if(this._y>targetmc._y){
     removeBrick(targetmc)
     }
     }
     // Check if the ball hit the pad and where and make the ball bounce
     if(pad.hitTest(this._x,this._y+(this._height/2)+3)){
                         if((this._x-pad._x<10 && this._x<pad._x+1) || (this._x - pad._x > pad._width/3&& this._x>pad._x+pad._width-5)){
                              speed_x = -speed_x
                         }
                         speed_y = -speed_y
                         }
}
}
 
// This function is called when the ball fasll
function newball(){
     // Re-set the pad.onEnterFrame so the ball will follow it
     // until the user will click
     pad.onEnterFrame = function(){
               ball._x = pad._x + pad_w/2
     }
     // Stop the ball
     delete ball.onEnterFrame
     // If the player have more than 0 lives, the game can continue
     if(!lives == 0){
     // Re-set the listener so when the player click the game begin
     Mouse.addListener(s)
     // Position the ball over the pad
     ball._x = pad._x + pad_w/2
     ball._y = pad._y - ball._height/2
     }else{
          // Otherwhise the game is over
          gameOver()
     }
}
 
// Load the info about a level
level_info = new XML()
level_info.ignoreWhite = true
level_info.onLoad = setLevelInfo
function level(n){
     level_info.load('level'+n+'.xml')
}
// Put the info about the level into arrays
function setLevelInfo(){
     bricks_type = []
     brickinfos = this.firstChild.childNodes[0].childNodes 
     brick_w = Number(brickinfos[0].attributes.width)
     brick_h = Number(brickinfos[0].attributes.height)
     brick_iniY =  Number(brickinfos[0].attributes.borderup)
     brick_iniX = Number(brickinfos[0].attributes.bordersx)
     trace(brick_w)
     for(b=1;b<brickinfos.length;b++){
          bricks_type[Number(brickinfos[b].attributes.id)] = new Array()
          bricks_type[b]["res"] = brickinfos[b].attributes.res
          bricks_type[b]["color"] = brickinfos[b].attributes.col
     }
     level_structure = this.firstChild.childNodes[1].childNodes
     level_lines = new Array()
     // Count how many lines of brick the level has
     for(l=0;l<level_structure.length;l++){
          // Put the structure of the line into an array
          level_lines[l] = new Array()
          level_lines[l] = level_structure[l].firstChild.toString().split("")
          // Build the line
          createLine(l)
}
     }
// Set total_bricks to 0 (the level must be build yet     
total_bricks = 0
 
// Create a line of bricks
function createLine(l){
     xid = 0
     for(cur=0;cur<level_lines[l].length;cur++){
     if(level_lines[l][cur] != 0){
     // Add one to the total_bricks var
     total_bricks++
     // Set the brick color
     color = bricks_type[level_lines[l][cur]]["color"]
     // Create and draw the brick
     _root.createEmptyMovieClip('brick'+l+"|"+xid,getNextHighestDepth())
     with(eval('brick'+l+"|"+xid)){
          lineStyle(1,0x000000,100)
          beginFill(color,100)
          lineTo(brick_w,0)
          lineTo(brick_w,brick_h)
          lineTo(0,brick_h)
          lineTo(0,0)
          endFill()
          // Position the brick
          _x = brick_iniX + cur*20
          _y = brick_iniY + l*brick_h
     }
     // Set the brick resistance
     eval('brick'+l+"|"+xid).res = res = bricks_type[level_lines[l][cur]]["res"]
     }
     xid++
     }
}
// Call the basic functions of the snippet
generateGameField()     
createPad()
createBall()
level(currentlevel)
}
 
// USAGE
// Set the framerate to 30fps (or higher)
// Paste this code on the first frame
// Write brick() in the frame actions
// It's suggested to set the stage size
// to 300x200, but it's not obligatory
 
// EXAMPLE
brick()