Box2D: /build/box2d/src/box2d-adaedf1772ede7420bc9ee569c8cba7952db91a0/include/box2d/b2_world_callbacks.h Source File

| Box2D 2.4.0 A 2D physics engine for games

b2_world_callbacks.h
1 // MIT License
2
3 // Copyright (c) 2019 Erin Catto
4
5 // Permission is hereby granted, free of charge, to any person obtaining a copy
6 // of this software and associated documentation files (the "Software"), to deal
7 // in the Software without restriction, including without limitation the rights
8 // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
9 // copies of the Software, and to permit persons to whom the Software is
10 // furnished to do so, subject to the following conditions:
11
12 // The above copyright notice and this permission notice shall be included in all
13 // copies or substantial portions of the Software.
14
15 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18 // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
21 // SOFTWARE.
22
23 #ifndef B2_WORLD_CALLBACKS_H
24 #define B2_WORLD_CALLBACKS_H
25
26 #include "b2_api.h"
27 #include "b2_settings.h"
28
29 struct b2Vec2;
30 struct b2Transform;
31 class b2Fixture;
32 class b2Body;
33 class b2Joint;
34 class b2Contact;
35 struct b2ContactResult;
36 struct b2Manifold;
37
41 class B2_API b2DestructionListener
42 {
43 public:
44 virtual ~b2DestructionListener() {}
45
48 virtual void SayGoodbye(b2Joint* joint) = 0;
49
52 virtual void SayGoodbye(b2Fixture* fixture) = 0;
53 };
54
57 class B2_API b2ContactFilter
58 {
59 public:
60 virtual ~b2ContactFilter() {}
61
64 virtual bool ShouldCollide(b2Fixture* fixtureA, b2Fixture* fixtureB);
65 };
66
70 struct B2_API b2ContactImpulse
71 {
72 float normalImpulses[b2_maxManifoldPoints];
73 float tangentImpulses[b2_maxManifoldPoints];
74 int32 count;
75 };
76
86 class B2_API b2ContactListener
87 {
88 public:
89 virtual ~b2ContactListener() {}
90
92 virtual void BeginContact(b2Contact* contact) { B2_NOT_USED(contact); }
93
95 virtual void EndContact(b2Contact* contact) { B2_NOT_USED(contact); }
96
107 virtual void PreSolve(b2Contact* contact, const b2Manifold* oldManifold)
108 {
109 B2_NOT_USED(contact);
110 B2_NOT_USED(oldManifold);
111 }
112
119 virtual void PostSolve(b2Contact* contact, const b2ContactImpulse* impulse)
120 {
121 B2_NOT_USED(contact);
122 B2_NOT_USED(impulse);
123 }
124 };
125
128 class B2_API b2QueryCallback
129 {
130 public:
131 virtual ~b2QueryCallback() {}
132
135 virtual bool ReportFixture(b2Fixture* fixture) = 0;
136 };
137
140 class B2_API b2RayCastCallback
141 {
142 public:
143 virtual ~b2RayCastCallback() {}
144
157 virtual float ReportFixture( b2Fixture* fixture, const b2Vec2& point,
158 const b2Vec2& normal, float fraction) = 0;
159 };
160
161 #endif
b2Vec2
A 2D column vector.
Definition: b2_math.h:42
b2ContactListener::PreSolve
virtual void PreSolve(b2Contact *contact, const b2Manifold *oldManifold)
Definition: b2_world_callbacks.h:107
b2Body
A rigid body. These are created via b2World::CreateBody.
Definition: b2_body.h:133
b2_settings.h
b2ContactFilter::ShouldCollide
virtual bool ShouldCollide(b2Fixture *fixtureA, b2Fixture *fixtureB)
b2ContactListener
Definition: b2_world_callbacks.h:87
b2Transform
Definition: b2_math.h:339
b2ContactListener::BeginContact
virtual void BeginContact(b2Contact *contact)
Called when two fixtures begin to touch.
Definition: b2_world_callbacks.h:92
b2RayCastCallback::ReportFixture
virtual float ReportFixture(b2Fixture *fixture, const b2Vec2 &point, const b2Vec2 &normal, float fraction)=0
b2Manifold
Definition: b2_collision.h:100
b2QueryCallback
Definition: b2_world_callbacks.h:129
b2DestructionListener::SayGoodbye
virtual void SayGoodbye(b2Joint *joint)=0
b2ContactListener::PostSolve
virtual void PostSolve(b2Contact *contact, const b2ContactImpulse *impulse)
Definition: b2_world_callbacks.h:119
b2ContactListener::EndContact
virtual void EndContact(b2Contact *contact)
Called when two fixtures cease to touch.
Definition: b2_world_callbacks.h:95
b2Fixture
Definition: b2_fixture.h:113
b2QueryCallback::ReportFixture
virtual bool ReportFixture(b2Fixture *fixture)=0
b2ContactImpulse
Definition: b2_world_callbacks.h:71
b2_maxManifoldPoints
#define b2_maxManifoldPoints
Definition: b2_settings.h:58
b2Contact
Definition: b2_contact.h:83
b2DestructionListener::SayGoodbye
virtual void SayGoodbye(b2Fixture *fixture)=0
b2RayCastCallback
Definition: b2_world_callbacks.h:141
b2ContactFilter
Definition: b2_world_callbacks.h:58
b2Joint
Definition: b2_joint.h:112
b2DestructionListener
Definition: b2_world_callbacks.h:42