Dungeon Raid iPhone game engine made with Flash and AS3 – bug solved and more
Some days ago I posted the Dungeon Raid iPhone game engine made with Flash and AS3 but unfortunately it suffered of a little bug in the backtracking engine.
It was just one missing line, line 68 in the following script:
|
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 |
package { import flash.display.Sprite; import flash.events.MouseEvent; import flash.geom.Point; public class Main extends Sprite { private var fieldWidth:int=8;// field width, in tiles private var fieldHeight:int=6;// field height, in tiles private var tileSize:int=80;// tile size, in pixels private var tileVector:Vector.<Object>; private var visitedVector:Vector.<Point>;// vector to store all visited tiles, as Point as it's easy to store x and y coordinate public function Main() { // adding tiles on stage and initializing tile vector tileVector=new Vector.<Object>(); for (var i:int=0; i<fieldWidth; i++) { tileVector[i]=new Vector.<Object>(); for (var j:int=0; j<fieldHeight; j++) { // each tile is an object var tileObject:Object=new Object(); tileObject.taken=false; tileObject.tile=new Tile(); tileObject.tile.x=i*tileSize; tileObject.tile.y=j*tileSize; tileObject.tile.gotoAndStop(1); addChild(tileObject.tile); tileObject.path=null; tileVector[i][j]=tileObject; } } // trigger mouse down to catch starting tile stage.addEventListener(MouseEvent.MOUSE_DOWN,startDrawing); } private function startDrawing(e:MouseEvent):void { // getting starting tile var i:int=Math.floor(mouseX/tileSize); var j:int=Math.floor(mouseY/tileSize); // initializing and pushing tile into the vector visitedVector=new Vector.<Point>(); visitedVector.push(new Point(i,j)); // highlighting the tile and setting it as "taken"; tileVector[i][j].tile.gotoAndStop(2); tileVector[i][j].taken=true; // updating listeners, removing mouse down, adding mouse move and mouse up; stage.removeEventListener(MouseEvent.MOUSE_DOWN,startDrawing); stage.addEventListener(MouseEvent.MOUSE_MOVE,drawing); stage.addEventListener(MouseEvent.MOUSE_UP,stopDrawing); } private function drawing(e:MouseEvent):void { // getting tile var i:int=Math.floor(mouseX/tileSize); var j:int=Math.floor(mouseY/tileSize); // checking if we are inside the sensible area var distX:Number=mouseX-(i*tileSize+tileSize/2); var distY:Number=mouseY-(j*tileSize+tileSize/2); // 1225 is 35^2, where 35 is the radius of the sensible area if (distX*distX+distY*distY<1225) { // now checking if we moved from the last tile visited if (i!=visitedVector[visitedVector.length-1].x || j!=visitedVector[visitedVector.length-1].y) { // now, let's see if we moved to an adjacent tile. we don't want the player to jump here and there if (Math.abs(i-visitedVector[visitedVector.length-1].x)<=1 && Math.abs(j-visitedVector[visitedVector.length-1].y)<=1) { // ok we moved, now let's see if we are backtracking: if (visitedVector.length>1&&i==visitedVector[visitedVector.length-2].x&&j==visitedVector[visitedVector.length-2].y) { // we are backtracking, so we have to remove the last element from visitedVector and turn off the tile var backtrackPoint:Point=visitedVector.pop(); tileVector[backtrackPoint.x][backtrackPoint.y].tile.gotoAndStop(1); tileVector[backtrackPoint.x][backtrackPoint.y].taken=false; removeChild(tileVector[backtrackPoint.x][backtrackPoint.y].path); // the infamous bug line tileVector[backtrackPoint.x][backtrackPoint.y].path=null; // adding the arrow to latest path if (visitedVector.length>=2) { tileVector[visitedVector[visitedVector.length-1].x][visitedVector[visitedVector.length-1].y].path.gotoAndStop(tileVector[visitedVector[visitedVector.length-1].x][visitedVector[visitedVector.length-1].y].path.currentFrame+8); } } else { // we aren't backtracking, let's see if the new tile was already taken (illegal move); if (! tileVector[i][j].taken) { // it's a new tile, let's insert it into the vector and highlight it visitedVector.push(new Point(i,j)); tileVector[i][j].tile.gotoAndStop(2); tileVector[i][j].taken=true; // then place the path movieclip tileVector[i][j].path=new Path(); tileVector[i][j].path.x=visitedVector[visitedVector.length-2].x*tileSize+tileSize/2; tileVector[i][j].path.y=visitedVector[visitedVector.length-2].y*tileSize+tileSize/2; // showing the right frame with arrow var iDiff:int=i-visitedVector[visitedVector.length-2].x; var yDiff:int=j-visitedVector[visitedVector.length-2].y; switch (iDiff) { case -1 : tileVector[i][j].path.gotoAndStop(Math.abs(yDiff)*(4+3*yDiff)+1+8); break; case 0 : tileVector[i][j].path.gotoAndStop(5+2*yDiff+8); break; case 1 : tileVector[i][j].path.gotoAndStop(5+yDiff+8); break; } addChild(tileVector[i][j].path); // removing arrow from previous path if (visitedVector.length>=3) { tileVector[visitedVector[visitedVector.length-2].x][visitedVector[visitedVector.length-2].y].path.gotoAndStop(tileVector[visitedVector[visitedVector.length-2].x][visitedVector[visitedVector.length-2].y].path.currentFrame-8); } } else { // invalid move, stop drawing; stopDrawing(null); } } } } } } private function stopDrawing(e:MouseEvent):void { // updating listeners stage.addEventListener(MouseEvent.MOUSE_DOWN,startDrawing); stage.removeEventListener(MouseEvent.MOUSE_MOVE,drawing); stage.removeEventListener(MouseEvent.MOUSE_UP,stopDrawing); // turning off all tiles for (var i:int=0; i<fieldWidth; i++) { for (var j:int=0; j<fieldHeight; j++) { tileVector[i][j].tile.gotoAndStop(1); tileVector[i][j].taken=false; if (tileVector[i][j].path!=null) { removeChild(tileVector[i][j].path); tileVector[i][j].path=null; } } } } } } |
Moreover, I added eight new frames to Path movieclip in order to show the arrow at the end of the path like in the original game.
Enjoy:
…and download the source code.
Rate this post: 
(7 votes, average: 4.57 out of 5)
(7 votes, average: 4.57 out of 5)
Loading ...
Flash Templates provided by Template Monster are pre-made web design products developed using Flash technology.
They can be easily customized to meet the unique requirements of your project.
They can be easily customized to meet the unique requirements of your project.
Be my fan on Facebook and follow me on Twitter! Exclusive content for my Facebook fans and Twitter followers
This post has 4 comments
Dungeon Raid iPhone game engine made with Flash and AS3 – bug solved and more – Emanuele Feronato « eaflash
[...] on http://www.emanueleferonato.com Share this:TwitterFacebookLike this:LikeBe the first to like [...]
codeBeast
Hi – excellent as always but are you going to post the rest of the code for the game with some example graphics?
jj
@codeBeast – why don’t you try to figure out some of it on your own? You’ll never learn if you just copy and paste. It’s all almost done – you just have to add some simple logic.
This site is terrible as a “tutorial” site for beginners. Not much explanation, just “here’s some code!”, allowing newbies to just be “hey, look, I made a game (not really)! I feel really cool, even though I just copy-and-pasted, and know nothing!”
Azul
@jj not really, what you are saying only applies to “copy-paste”ers, I had no programming knowledge, yet I learned how to make a game from scratch and I’m 14 years old, what I’m trying to say is that this site is a great tutorial site, but as you said, It’s really really hard for beginners(I know because I was one),There are a few beginner friendly sites but they don’t teach as much as this.