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POHow to get MovieClip.prototype in ActionScript 3?
 

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  1. POHow to get MovieClip.prototype in ActionScript 3?
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    <p>In a ActionScript 2 code sample it uses some MovieClip.prototype's functions, as MovieClip.prototype.setModel;</p> <p>I'm trying to write this example using an ActionScript 3 class, but the MoviewClip.prototype does not exists, where can I get it from? Does it exist in ActionScript 3?</p> <p><strong>--update</strong></p> <p>Ok, as you are asking, here goes, this code works just fine as an ActionScript included on frame1, but I want to make a ActionScript 3 class with this same code:</p> <pre><code>//package //{ // public class asteroids extends MovieClip // { var MW = 8; // Scaling factor for models (which were originally drawn on graph paper) var SW = Stage.width; // Stage coords var SH = Stage.height; var kDegToRad = Math.PI/180; // Useful constant for drawing circles &amp; such var kDamp = 0.99; // Damping in ship acceleration // The models // // Rocket fuselage var fuseModel = [{mx:0, my:-5.5, x:0, y:-4, pen:.5, clr:0x000033, alpha:50}, {cx:-1,cy:-3,x:-1,y:-1, pen:2, clr:0x000033, alpha:50}, {x:-.75,y:4}, {cx:0, cy:4.5, x:.75,y:4}, // from -.75,4 {x:1,y:-1}, {cx:1,cy:-3,x:0,y:-4}]; // Rocket fins var finModel = [ {mx:-1,my:-1,cx:-3,cy:4,x:-2,y:6,bf:0x0000FF,bfa:80}, {cx:-1,cy:4.5,x:-.75,y:4}, {x:-1,y:-1}, {mx:.75,my:4,cx:1,cy:4.5,x:2,y:6}, {cx:3,cy:4,x:1,y:-1}, {x:.75,y:4,ef:1} ]; // Routine to scale model to arbitrary size function scaleModel(m,s) { for (var i = 0; i &lt; m.length; ++i) { var pt = m[i]; if (pt.mx != undefined) { pt.mx *= s; pt.my *= s; } if (pt.cx != undefined) { pt.cx *= s; pt.cy *= s; } pt.x *= s; pt.y *= s; } } // Draw a model // function drawModel(m) { for (var i = 0; i &lt; m.length; ++i) { var pt = m[i]; if (pt.bf != undefined) this.beginFill(pt.bf, pt.bfa); if (pt.pen != undefined) this.lineStyle(pt.pen,pt.clr,pt.alpha); if (pt.mx != undefined) this.moveTo(pt.mx,pt.my); if (pt.cx != undefined) this.curveTo(pt.cx,pt.cy,pt.x,pt.y); else if (pt.x != undefined) this.lineTo(pt.x,pt.y); if (pt.ef != undefined) this.endFill(); } } // Ship Movement and most game-play stuff happens here function ShipMove() { // Steering &amp; Thrust if (Key.isDown(Key.LEFT)) this._rotation -= 5; else if (Key.isDown(Key.RIGHT)) this._rotation += 5; if (Key.isDown(Key.CONTROL) || Key.isDown(Key.UP)) { this.vx += Math.sin(this._rotation*kDegToRad); this.vy -= Math.cos(this._rotation*kDegToRad); } else if (Key.isDown(Key.DOWN)) { this.vx *= .9; this.vy *= .9; } // Basic movement with acceleration and damping this._x += this.vx; this._y += this.vy; // Wrap around edges of stage if (this._x &lt; -this._width) this._x += SW+this._width*2; else if (this._x &gt; SW+this._width) this._x -= SW+this._width*2; if (this._y &lt; -this._height) this._y += SH+this._height*2; else if (this._y &gt; SH+this._height) this._y -= SH+this._height*2; } // Initialize new ship function NewShip() { ship_mc._x = SW/2; ship_mc._y = SH/2; ship_mc.onEnterFrame = shipMove; } // Assign a sprite model to a movieclip &amp; draw it // MovieClip.prototype.setModel = function(m) { this.model = m; this.drawModel(m); } MovieClip.prototype.drawModel = drawModel; scaleModel(fuseModel, MW*.8); // Using a slightly smaller rocket than original drawing scaleModel(finModel, MW*.8); // One Time Initialziation // _root.createEmptyMovieClip("ship_mc", 2); ship_mc.createEmptyMovieClip("fuselage", 1); ship_mc.fuselage.setModel(fuseModel); ship_mc.createEmptyMovieClip("fins", 2); ship_mc.fins.setModel(finModel); NewShip(); // } //} </code></pre>
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    1. COCan you describe more about what you want to do? There's a sort of prototype-like thing in the guts of AS3, but it's not usually a very helpful thing to mess with. Usually you want to subclass MovieClip and decorate or override stuff, but if you comment on your goals we can be more specific.
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      1. POHow to get MovieClip.prototype in ActionScript 3?
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