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How do I rotate a point based on an angle?, A little advanced math is in order here!

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Miles	Posted: Oct 28 2009, 11:18 PM
Y HALO THAR Group: Members Posts: 71 Member No.: 1468 Joined: 22-September 05 Status: (0d)	Okay, so I'm working on this platform-carrying thing where you stand on a platform, which is positioned relative to an anchor object that may move at any given moment. The platform itself will swing, which brings up the question: How would I position the platform object based on the angle (or an updating value maybe) of the anchor object? If you don't get what I'm saying... think about Sonic 1's Green Hill boss (where there's a ball on a chain that swings back and forth, and is attached to Robotnik's ship), or Super Mario Brothers 3 (the nuclear waffles that swing round and round in the castles). How would I make an object swing like that? This is being done in Game Maker 7 Pro, using a heavily scripted engine of mine. Any help would be appreciated. -------------------- No, I'm not that Tails character. Silly you, jumping to conclusions like that!

Xgoff

Posted: Oct 28 2009, 11:21 PM

<):|

Group: Members
Posts: 52341
Member No.: 24
Joined: 13-October 03

Status: (0d) [--]

basically whatever gm's equivalent of:

orbiter_x = anchor_x + cos(anchor_angle) * orbiter_distance orbiter_y = anchor_y + sin(anchor_angle) * orbiter_distance

This post has been edited by Xgoff on Oct 28 2009, 11:22 PM

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QUOTE

(5:25:58 PM) Mikau: xgoff
(5:26:00 PM) Mikau: guess what
(5:26:04 PM) Xgoff: chicken butt
(5:26:09 PM) Mikau: **** you

Miles	Posted: Oct 28 2009, 11:36 PM
Y HALO THAR Group: Members Posts: 71 Member No.: 1468 Joined: 22-September 05 Status: (0d)	Yeah, that's close enough to GML. Thanks a ton, dude. -------------------- No, I'm not that Tails character. Silly you, jumping to conclusions like that!

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