Java-Gaming.org Hi !
Featured games (90)
games approved by the League of Dukes
Games in Showcase (768)
Games in Android Showcase (230)
games submitted by our members
Games in WIP (854)
games currently in development
News: Read the Java Gaming Resources, or peek at the official Java tutorials
 
    Home     Help   Search   Login   Register   
Pages: [1]
  ignore  |  Print  
  Rotation to the mouse cursor  (Read 1573 times)
0 Members and 1 Guest are viewing this topic.
Offline Mac70
« Posted 2013-07-08 14:15:25 »

Like in topic. I have entity sticked to camera (always in the centre of the screen) and I want to make rotate to the mouse cursor rotation. My code works, but it can't get past the 0 angle line. Is there any way to fix it? All angles have values between 0 and PI*2.

1  
2  
3  
4  
5  
6  
7  
8  
9  
10  
11  
12  
13  
        float deltaY = mouse.y - Display.getHeight()/2;
        float deltaX = mouse.x - Display.getWidth()/2;
        double desiredAngle = Math.atan2(deltaY, deltaX);
        desiredAngle+= (desiredAngle<0) ? Math.PI*2 : 0;
        desiredAngle-= (desiredAngle>Math.PI*2) ? Math.PI*2 : 0;
       
        if (desiredAngle>angle-Math.PI/64 && desiredAngle<angle+Math.PI/64) {}
        else if (desiredAngle>angle && desiredAngle<angle+Math.PI) {
            angle+= turnThrust/mass;
        }
        else if (desiredAngle<angle && desiredAngle>angle-Math.PI) {
            angle-= turnThrust/mass;
        }
Offline jonjava
« Reply #1 - Posted 2013-07-08 15:34:55 »

This thread should help: http://www.java-gaming.org/topics/character-in-center-of-screen-turns-toward-mouse/27052/msg/240754/view.html#msg240754

Pages: [1]
  ignore  |  Print  
 
 

 
EgonOlsen (1337 views)
2018-06-10 19:43:48

EgonOlsen (1229 views)
2018-06-10 19:43:44

EgonOlsen (939 views)
2018-06-10 19:43:20

DesertCoockie (1380 views)
2018-05-13 18:23:11

nelsongames (1112 views)
2018-04-24 18:15:36

nelsongames (1374 views)
2018-04-24 18:14:32

ivj94 (2119 views)
2018-03-24 14:47:39

ivj94 (1267 views)
2018-03-24 14:46:31

ivj94 (2284 views)
2018-03-24 14:43:53

Solater (807 views)
2018-03-17 05:04:08
Deployment and Packaging
by mudlee
2018-08-22 18:09:50

Java Gaming Resources
by gouessej
2018-08-22 08:19:41

Deployment and Packaging
by gouessej
2018-08-22 08:04:08

Deployment and Packaging
by gouessej
2018-08-22 08:03:45

Deployment and Packaging
by philfrei
2018-08-20 02:33:38

Deployment and Packaging
by philfrei
2018-08-20 02:29:55

Deployment and Packaging
by philfrei
2018-08-19 23:56:20

Deployment and Packaging
by philfrei
2018-08-19 23:54:46
java-gaming.org 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‑gaming.org
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!