Hi all, would like to ask a question regarding eventListener regarding a maze game.
i have a file where the object in a maze is controlled by using arrow keys. how can i change the key into mouseEvent so that i can click and drag?
I am new to as3, any helps will is very appreciated.
package com.flashandmath.bk.maze {
import flash.events.Event;
import flash.events.KeyboardEvent;
import flash.ui.Keyboard;
import flash.display.Sprite;
import flash.display.CapsStyle;
import flash.display.Shape;
import com.flashandmath.bk.maze.MazeCell;
import com.flashandmath.bk.maze.MazeDataGenerator;
public class MazeDisplay extends Sprite {
public static const MAZE_READY:String = "mazeReady";
public var numRows:int;
public var numCols:int;
private var cellSize:Number;
private var displayWidth:Number;
private var displayHeight:Number;
private var displayData:Array;
private var mazeDataGen:MazeDataGenerator;
private var ball:Shape;
private var radius:Number;
private var halfSize:Number;
private var speed:Number;
public function MazeDisplay(){
ball=new Shape();
this.addChild(ball);
}
public function createMaze(r:int,c:int,cs:Number):void {
numRows=r;
numCols=c;
cellSize=cs;
displayWidth=numCols*cellSize;
displayHeight=numRows*cellSize;
halfSize=Math.floor(cellSize/2);
radius=halfSize-3;
speed=3;
mazeDataGen=new MazeDataGenerator();
mazeDataGen.addEventListener(MazeDataGenerator.DATA_READY,onDataReady);
mazeDataGen.createMazeData(r,c);
}
private function onDataReady(e:Event):void {
displayData=mazeDataGen.dataArray;
drawBall();
drawMaze();
dispatchEvent(new Event(MazeDisplay.MAZE_READY));
stage.addEventListener(KeyboardEvent.KEY_DOWN,keyPressed);
}
private function keyPressed(evt:KeyboardEvent):void {
var nextX:Number;
var nextY:Number;
var curCol:int=int(Math.floor(ball.x/cellSize));
var curRow:int=int(Math.floor(ball.y/cellSize));
var nextCol:int;
var nextRow:int;
if (evt.keyCode == Keyboard.RIGHT) {
ball.y=curRow*cellSize+cellSize/2;
nextX=ball.x+speed;
nextCol=int(Math.floor(nextX/cellSize));
if(nextCol==curCol && displayData[curRow][curCol].east){
ball.x=Math.min(ball.x+speed,curCol*cellSize+cellSize/2);
}
if(displayData[curRow][curCol].east==false){
ball.x+=speed;
}
} else if (evt.keyCode == Keyboard.LEFT) {
ball.y=curRow*cellSize+cellSize/2;
nextX=ball.x-speed;
nextCol=int(Math.floor(nextX/cellSize));
if(nextCol==curCol && displayData[curRow][curCol].west){
ball.x=Math.max(ball.x-speed,curCol*cellSize+cellSize/2);
}
if(displayData[curRow][curCol].west==false){
ball.x+=-speed;
}
} else if (evt.keyCode == Keyboard.DOWN) {
ball.x=curCol*cellSize+cellSize/2;
nextY=ball.y+speed;
nextRow=int(Math.floor(nextY/cellSize));
if(nextRow==curRow && displayData[curRow][curCol].south){
ball.y=Math.min(ball.y+speed,curRow*cellSize+cellSize/2);
}
if(displayData[curRow][curCol].south==false){
ball.y+=speed;
}
} else if (evt.keyCode == Keyboard.UP) {
ball.x=curCol*cellSize+cellSize/2;
nextY=ball.y-speed;
nextRow=int(Math.floor(nextY/cellSize));
if(nextRow==curRow && displayData[curRow][curCol].north){
ball.y=Math.max(ball.y-speed,curRow*cellSize+cellSize/2);
}
if(displayData[curRow][curCol].north==false){
ball.y+=-speed;
}
}
evt.updateAfterEvent();
}
private function drawMaze():void {
var i:int;
var j:int;
var curX:Number;
var curY:Number;
var curRow:Array;
var beg:int=Math.floor(Math.random()*numRows);
var end:int=Math.floor(Math.random()*numRows);
this.graphics.clear();
this.graphics.lineStyle(2,0x000000);
for(i=0;i<numRows;i++){
curY=i*cellSize;
curRow=displayData*;
for(j=0;j<numCols;j++){
curX=j*cellSize;
if(curRow[j].south){
this.graphics.moveTo(curX,curY+cellSize);
this.graphics.lineTo(curX+cellSize,curY+cellSize);
}
if(curRow[j].east){
this.graphics.moveTo(curX+cellSize,curY);
this.graphics.lineTo(curX+cellSize,curY+cellSize);
}
}
}
this.graphics.lineStyle(2,0x666666);
this.graphics.drawRect(0,0,displayWidth,displayHeight);
this.graphics.lineStyle(6, 0x006600,1.0, false, "normal", CapsStyle.NONE);
this.graphics.moveTo(0,beg*cellSize);
this.graphics.lineTo(0,beg*cellSize+cellSize);
this.graphics.lineStyle(6, 0xCC0000,1.0, false, "normal", CapsStyle.NONE);
this.graphics.moveTo(displayWidth,end*cellSize);
this.graphics.lineTo(displayWidth,end*cellSize+cellSize);
ball.x=cellSize/2;
ball.y=beg*cellSize+cellSize/2;
}
private function drawBall():void {
ball.graphics.clear();
ball.graphics.lineStyle();
ball.graphics.beginFill(0x0000CC);
ball.graphics.drawCircle(0,0,radius);
ball.graphics.endFill();
}
}
}
