Java-Gaming.org Hi !
Featured games (85)
games approved by the League of Dukes
Games in Showcase (611)
Games in Android Showcase (172)
games submitted by our members
Games in WIP (657)
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  
  Phys2d collision mask  (Read 3348 times)
0 Members and 1 Guest are viewing this topic.
Offline newera31
« Posted 2009-07-17 03:52:27 »

Hello,

I am running into some troubles with the Phys2d bitmask on Body's.  I would expect that having a collision group of 1 set on two Body's would allow them to collide with each other.  However I could not get this to work, so I dug around in the code and noticed this in CollisionSpace.java:
1  
2  
3  
4  
5  
6  
7  
8  
9  
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
       /**
    * @see net.phys2d.raw.CollisionContext#resolve(net.phys2d.raw.BodyList, float)
    */

   public void resolve(BodyList bodyList, float dt) {
      for (int i = 0; i < bodyList.size(); ++i)
      {
         Body bi = bodyList.get(i);
         if (bi.disabled()) {
            continue;
         }
         
         for (int j = i+1; j < bodyList.size(); ++j)
         {
            Body bj = bodyList.get(j);
            if (bj.disabled()) {
               continue;
            }
                                // should this be if ((bi.getBitmask() & bj.getBitmask()) == 0)?
            if ((bi.getBitmask() & bj.getBitmask()) != 0) {
               continue;
            }
...


Has any one else encountered this problem?  In order for collision groups to work they have to be non-matching bits? - that doesn't make sense...

Thanks,

Tony
Pages: [1]
  ignore  |  Print  
 
 
You cannot reply to this message, because it is very, very old.

 
GamerC4 (22 views)
2015-08-22 20:38:50

GamerC4 (21 views)
2015-08-22 20:37:18

GamerC4 (24 views)
2015-08-22 20:37:01

Kefwar (26 views)
2015-08-22 18:07:24

GamerC4 (24 views)
2015-08-22 01:00:24

GamerC4 (36 views)
2015-08-22 01:00:17

GamerC4 (23 views)
2015-08-22 00:57:35

GamerC4 (24 views)
2015-08-22 00:56:59

BurntPizza (29 views)
2015-08-21 01:38:01

KaiHH (43 views)
2015-08-19 15:01:05
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

How Do I Expand My Game?
by bashfrog
2015-06-14 11:34:43

List of Learning Resources
by PocketCrafter7
2015-05-31 05:37:30

Intersection Methods
by Roquen
2015-05-29 08:19:33
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!