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POSelect multiple custom objects on KineticJS and Javascript
 

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  1. POSelect multiple custom objects on KineticJS and Javascript
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    <p>Good Evening for everyone. I create a object on KineticJS that has this methods:</p> <pre><code> function addCelestial(cb){ this.celestialBody = new Kinetic.Circle({ id: cb.id, x:cb.x, y:cb.y, fill:cb.color, radius:cb.radius, shadowColor: cb.glow, shadowBlur: cb.glowBlur, shadowOffset: 0, shadowOpacity: cb.glowOpacity }); this.xpos = function(value){ if (typeof value === "undefined") { return this.celestialBody.getX(); } else { this.celestialBody.setX(value); } }; this.ypos = function(value){ if (typeof value === "undefined") { return this.celestialBody.getY(); } else { this.celestialBody.setY(value); } }; this.xvel = function(value){ if (typeof value === "undefined") { return this.xvel_v; } else { this.xvel_v = value; } }; this.yvel = function(value){ if (typeof value === "undefined") { return this.yvel_v; } else { this.yvel_v = value; } }; this.xacc = function(value){ if (typeof value === "undefined") { return this.xacc_v; } else { this.xacc_v = value; } }; this.yacc = function(value){ if (typeof value === "undefined") { return this.yacc_v; } else { this.yacc_v = value; } }; this.mass = function(value){ if (typeof value === "undefined") { return this.mass_v; } else { this.mass_v = value; } }; this.radius = function(value){ if (typeof value === "undefined") { return this.celestialBody.getRadius(); } else { this.celestialBody.setRadius(value); } }; this.resetForce = function(){ this.xacc(0); this.yacc(0); }; this.calcNewState = function(){ this.xvel(this.xvel() + this.xacc() * timestep); this.yvel(this.yvel() + this.yacc() * timestep); this.xpos(this.xpos() + timestep + this.xvel()); this.ypos(this.ypos() + timestep + this.yvel()); }; this.addForce = function(otherbody){ var radius = Math.pow(Math.pow(otherbody.ypos()-this.ypos(),2)+Math.pow(otherbody.xpos()-this.xpos(),2),0.5); var Gacc = otherbody.mass()/(Math.pow(radius,2)); var angle = Math.atan2((otherbody.ypos()-this.ypos()),(otherbody.xpos()-this.xpos())); this.xacc(this.xacc()+Gacc*Math.cos(angle)); this.yacc(this.yacc()+Gacc*Math.sin(angle)); }; this.logStatus = function(name){ console.log(name+' xpos:'+this.xpos()+' ypos'+this.ypos()+' xacc:'+this.xacc()+' yacc:'+this.yacc()+' xvel:'+this.xvel()+' yvel:'+this.yvel()); }; this.getChildren = function(){ return this; }; cb.layer.add(this.celestialBody); </code></pre> <p>}</p> <p>Then, i create a loop to create this objects:</p> <pre><code>for (var i = 0; i &lt; 20;i++){ var asteroidID = 'asteroid' + i; var asteroid = new addCelestial({color: 'rgb(255,255,255)',layer:layer0, id: asteroidID}); asteroid.radius(1); asteroid.xpos((Math.random()*300)+200); asteroid.ypos((Math.random()*5)+document.height/2); asteroid.xvel(0); asteroid.yvel(-5); asteroid.mass(1000); asteroid.xacc(0); asteroid.yacc(0); } </code></pre> <p>I'm trying everything to select all the 20 asteroids so i can run the methods addForce, calcNewState and resetForce but i fail miserably. Can someone please help-me with this?</p>
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    1. CONot sure to understand, but you could put all the `addCelestial` instances in an array. `var asteroids = [];` and then in the loop `asteroids.push(asteroid);`
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