Comments on: It all started as a performance test… http://www.nulldesign.de/2007/12/01/it-all-started-as-a-performance-test/ blog & portfolio Fri, 03 Feb 2012 20:02:20 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: Mark http://www.nulldesign.de/2007/12/01/it-all-started-as-a-performance-test/comment-page-1/#comment-12130 Mark Wed, 29 Jul 2009 09:02:35 +0000 http://www.nulldesign.de/2007/12/01/it-all-started-as-a-performance-test/#comment-12130 Hi Jonathan, I personally use a mixture of SIN and COS to position bullets if they are coming out of a turret on a rotated item (that is - if they are being fired from a turret that doesn't originate from 0,0) Adjust your firing by X/Y pixels from the center: var ang:Number = rotation + 90; (or whatever figure you need) var x_offset:Number = Math.cos(ang / 180 * Math.PI) * DISTANCE; var y_offset:Number = Math.sin(ang / 180 * Math.PI) * DISTANCE; Hi Jonathan,

I personally use a mixture of SIN and COS to position bullets if they are coming out of a turret on a rotated item (that is – if they are being fired from a turret that doesn’t originate from 0,0)

Adjust your firing by X/Y pixels from the center:
var ang:Number = rotation + 90; (or whatever figure you need)
var x_offset:Number = Math.cos(ang / 180 * Math.PI) * DISTANCE;
var y_offset:Number = Math.sin(ang / 180 * Math.PI) * DISTANCE;

]]> By: Jonathan http://www.nulldesign.de/2007/12/01/it-all-started-as-a-performance-test/comment-page-1/#comment-8436 Jonathan Thu, 02 Apr 2009 09:16:41 +0000 http://www.nulldesign.de/2007/12/01/it-all-started-as-a-performance-test/#comment-8436 hi..i was wondering how do you position the bullets that's coming out of the ship..i tried to create a tank that will fire cannons..but i can't position the cannons correctly if i rotate the tank.. cheers, jonathan hi..i was wondering how do you position the bullets that’s coming out of the ship..i tried to create a tank that will fire cannons..but i can’t position the cannons correctly if i rotate the tank..

cheers,
jonathan

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