Panda3D
|
00001 // Filename: collideMask.h 00002 // Created by: drose (03Jul00) 00003 // 00004 //////////////////////////////////////////////////////////////////// 00005 // 00006 // PANDA 3D SOFTWARE 00007 // Copyright (c) Carnegie Mellon University. All rights reserved. 00008 // 00009 // All use of this software is subject to the terms of the revised BSD 00010 // license. You should have received a copy of this license along 00011 // with this source code in a file named "LICENSE." 00012 // 00013 //////////////////////////////////////////////////////////////////// 00014 00015 #ifndef COLLIDEMASK_H 00016 #define COLLIDEMASK_H 00017 00018 #include "pandabase.h" 00019 00020 #include "bitMask.h" 00021 00022 // This is the data type of the collision mask: the set of bits that 00023 // every CollisionNode has, and that any two nodes must have some in 00024 // common in order to be tested for a mutual intersection. 00025 00026 // This file used to live in the collide directory, but since it's 00027 // such a trivial definition that a few other directories (like egg) 00028 // need without necessarily having to pull in all of collide, it 00029 // seemed better to move it to putil. 00030 00031 typedef BitMask32 CollideMask; 00032 00033 // We need some conventions for initial bits for GeomNodes and 00034 // CollideNodes. These are primarily advisory, since the application 00035 // programmer is free to define each bit as he or she chooses, but 00036 // they also control the initial default values that are assigned to 00037 // new nodes. 00038 00039 // By established convention, the lower 20 bits are reserved for 00040 // CollisionNodes. Each CollisionNode has all these bits set on by 00041 // default (and no others). You can (and probably should) change this 00042 // on a per-node basis to specialize CollisionNodes for different 00043 // purposes. 00044 static const CollideMask default_collision_node_collide_mask = CollideMask::lower_on(20); 00045 00046 // The next bit is reserved for generic GeomNodes. Each GeomNode has 00047 // this bit on by default (and no others). You can, of course, set 00048 // any mask you want on a particular GeomNode; this is just the 00049 // default bit if you choose not to do anything. 00050 static const CollideMask default_geom_node_collide_mask = CollideMask::bit(20); 00051 00052 // The remaining 11 bits are presently unassigned. No nodes will have 00053 // these bits on by default. 00054 00055 #endif 00056