Comments on: Creating a sling with Box2D using joints http://www.emanueleferonato.com/2009/02/07/creating-a-sling-with-box2d-using-joints/ italian geek and PROgrammer Fri, 10 Feb 2012 12:12:29 +0000 hourly 1 http://wordpress.org/?v= By: Dream@Night http://www.emanueleferonato.com/2009/02/07/creating-a-sling-with-box2d-using-joints/#comment-516176 Dream@Night Thu, 29 Oct 2009 07:17:58 +0000 http://www.emanueleferonato.com/?p=955#comment-516176 yeah !there is a bug !But ,I think you have solved it ! haha for other vistors ,I'll add some codes to solve it ! public function destroyMouse(evt:MouseEvent):void { if (dest_joint) { m_world.DestroyJoint(dest_joint); } dest_joint=null; if (mouseJoint) { m_world.DestroyJoint(mouseJoint); mouseJoint=null; } yeah !there is a bug !But ,I think you have solved it ! haha
for other vistors ,I’ll add some codes to solve it !

public function destroyMouse(evt:MouseEvent):void {
if (dest_joint) {
m_world.DestroyJoint(dest_joint);
}
dest_joint=null;
if (mouseJoint) {
m_world.DestroyJoint(mouseJoint);
mouseJoint=null;
}

]]> By: Chaz http://www.emanueleferonato.com/2009/02/07/creating-a-sling-with-box2d-using-joints/#comment-504601 Chaz Wed, 30 Sep 2009 17:50:09 +0000 http://www.emanueleferonato.com/?p=955#comment-504601 Nice concept :) Nice concept :)

]]> By: Simulating a hook with Box2D : Emanuele Feronato http://www.emanueleferonato.com/2009/02/07/creating-a-sling-with-box2d-using-joints/#comment-504177 Simulating a hook with Box2D : Emanuele Feronato Tue, 29 Sep 2009 13:59:44 +0000 http://www.emanueleferonato.com/?p=955#comment-504177 [...] same script we saw at Box2D joints: Distance Joint with some modifications and the concept saw at Creating a sling with Box2D using joints when we must remove the [...] [...] same script we saw at Box2D joints: Distance Joint with some modifications and the concept saw at Creating a sling with Box2D using joints when we must remove the [...]

]]> By: supermaggel http://www.emanueleferonato.com/2009/02/07/creating-a-sling-with-box2d-using-joints/#comment-403449 supermaggel Sun, 08 Mar 2009 19:05:54 +0000 http://www.emanueleferonato.com/?p=955#comment-403449 the sling initially works, but then it all gets buggy as hell :) the sling initially works, but then it all gets buggy as hell :)

]]> By: Joshua Barnett http://www.emanueleferonato.com/2009/02/07/creating-a-sling-with-box2d-using-joints/#comment-396023 Joshua Barnett Tue, 24 Feb 2009 22:19:01 +0000 http://www.emanueleferonato.com/?p=955#comment-396023 Bruno Mikoski leave the torque alone its only the speed that needs to be changed to a negative. Also the stack falls over on its own if you leave it alone any ideas how to fix this problem. I've tried adjusting the friction and density with no lucky anyone? Bruno Mikoski leave the torque alone its only the speed that needs to be changed to a negative.

Also the stack falls over on its own if you leave it alone any ideas how to fix this problem. I’ve tried adjusting the friction and density with no lucky anyone?

]]> By: VideoGuy http://www.emanueleferonato.com/2009/02/07/creating-a-sling-with-box2d-using-joints/#comment-386019 VideoGuy Sun, 08 Feb 2009 23:41:13 +0000 http://www.emanueleferonato.com/?p=955#comment-386019 I just tried this tutorial within the web page, and I got an ActionScript error alert. TypeError: Error #1009: Cannot access a property or method of a null object reference. at Box2D.Dynamics::b2World/DestroyJoint() at sling/destroyMouse() I don't know that much about Box2D, or if it's even important, but I thought you might want to know. It occurs when I click on the bullet, drag it, and then release it. I just tried this tutorial within the web page, and I got an ActionScript error alert.

TypeError: Error #1009: Cannot access a property or method of a null object reference.
at Box2D.Dynamics::b2World/DestroyJoint()
at sling/destroyMouse()

I don’t know that much about Box2D, or if it’s even important, but I thought you might want to know. It occurs when I click on the bullet, drag it, and then release it.

]]> By: robert http://www.emanueleferonato.com/2009/02/07/creating-a-sling-with-box2d-using-joints/#comment-385949 robert Sun, 08 Feb 2009 20:10:13 +0000 http://www.emanueleferonato.com/?p=955#comment-385949 hey i found a glitch once the bullet is released you can pick it up not a glitch but if you click about 1in up from the edge of the catapult it creats a piont and then the bullet goes crazy hey i found a glitch
once the bullet is released you can pick it up
not a glitch
but if you click about 1in up from the edge of the catapult it creats a piont and then the bullet goes crazy

]]> By: Bruno Mikoski http://www.emanueleferonato.com/2009/02/07/creating-a-sling-with-box2d-using-joints/#comment-385829 Bruno Mikoski Sun, 08 Feb 2009 13:50:31 +0000 http://www.emanueleferonato.com/?p=955#comment-385829 @Gawd Yeah, i try to change this is this code, but i encouter this problem: How change de rotation? Simple change the value to negative right? the_rev_joint.motorSpeed=-10; the_rev_joint.maxMotorTorque=-1000; NO! This not work :( hahah @Gawd

Yeah, i try to change this is this code, but i encouter this problem:

How change de rotation? Simple change the value to negative right?
the_rev_joint.motorSpeed=-10;
the_rev_joint.maxMotorTorque=-1000;

NO! This not work :(
hahah

]]> By: Gawd http://www.emanueleferonato.com/2009/02/07/creating-a-sling-with-box2d-using-joints/#comment-385817 Gawd Sun, 08 Feb 2009 13:21:54 +0000 http://www.emanueleferonato.com/?p=955#comment-385817 You should have had it rotating the other direction. Would be easier to use. You should have had it rotating the other direction. Would be easier to use.

]]> By: Gabriel Bianconi http://www.emanueleferonato.com/2009/02/07/creating-a-sling-with-box2d-using-joints/#comment-385792 Gabriel Bianconi Sun, 08 Feb 2009 12:26:46 +0000 http://www.emanueleferonato.com/?p=955#comment-385792 Something is wrong there... =X Something is wrong there… =X

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