Hi !
Featured games (85)
games approved by the League of Dukes
Games in Showcase (622)
Games in Android Showcase (176)
games submitted by our members
Games in WIP (674)
games currently in development
News: Read the Java Gaming Resources, or peek at the official Java tutorials
   Home   Help   Search   Login   Register   
  Show Posts
Pages: [1]
1  Java Game APIs & Engines / Java 2D / need help with angle/direction code on: 2013-02-05 01:51:18
I can't understand why this is happening with my 2D object. When i set direction to 0,45,90,180 etc. it goes in the direction it's suppose to ie 0=right,180=left. But when I add direction+=1; to the update method it starts going funny. If it starts at 0 moving right by the time it gets to 180 direction it's only actually going 90deg (down) but when it gets to 360 it's only going left instead of doing the full circle but then it stops moving and starts randomly moving in the opposite direction anti-clockwise. Is it a translation thing on the opengl?

direction is float 0-360deg

float radian = (float) Math.toRadians(direction);         
position.x = (float) (position.x + speed * Math.cos(radian));
position.y = (float) (position.y + speed * Math.sin(radian));

I can't understand the logic why it would do that or is my code completely useless?
Pages: [1]
basil_ (33 views)
2015-09-30 17:04:40

shadowstryker (17 views)
2015-09-29 15:55:06

TheSpaceHedgehog (23 views)
2015-09-29 01:58:48

GamerC4 (46 views)
2015-09-24 21:10:38

GamerC4 (67 views)
2015-09-24 21:09:48

htuy (22 views)
2015-09-24 04:57:24

htuy (31 views)
2015-09-24 04:56:35

htuy (23 views)
2015-09-24 04:56:09

htuy (22 views)
2015-09-24 04:47:33

Roquen (59 views)
2015-09-21 12:54:28
Math: Inequality properties
by Roquen
2015-10-01 13:30:46

Math: Inequality properties
by Roquen
2015-09-30 16:06:05

HotSpot Options
by Roquen
2015-08-29 11:33:11

Rendering resources
by Roquen
2015-08-17 12:42:29

Rendering resources
by Roquen
2015-08-17 09:36:56

Rendering resources
by Roquen
2015-08-13 07:40:51

Networking Resources
by Roquen
2015-08-13 07:40:43

List of Learning Resources
by gouessej
2015-07-09 11:29:36 is not responsible for the content posted by its members, including references to external websites, and other references that may or may not have a relation with our primarily gaming and game production oriented community. inquiries and complaints can be sent via email to the info‑account of the company managing the website of java‑
Powered by MySQL Powered by PHP Powered by SMF 1.1.18 | SMF © 2013, Simple Machines | Managed by Enhanced Four Valid XHTML 1.0! Valid CSS!