mirror of https://github.com/axmolengine/axmol.git
91 lines
3.0 KiB
C
91 lines
3.0 KiB
C
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// MIT License
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// Copyright (c) 2019 Erin Catto
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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// SOFTWARE.
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#ifndef B2_CONTACT_MANAGER_H
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#define B2_CONTACT_MANAGER_H
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#include "b2_api.h"
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#include "b2_broad_phase.h"
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#include "b2_fixture.h"
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#include "b2_contact.h"
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class b2ContactFilter;
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class b2ContactListener;
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class b2BlockAllocator;
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// Delegate of b2World.
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class B2_API b2ContactManager
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{
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public:
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b2ContactManager();
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~b2ContactManager();
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/// Callback to process a new pair (fixtureA, fixtureB).
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b2Contact* QueryCallback(b2Fixture* fixtureA, b2Fixture* fixtureB);
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// Perform broad-phase collision detection, process the pairs into new contacts and remove dead contacts.
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void FindNewContacts();
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/// Remove contacts that have not persisted, ie currently are not marked with the b2Contact::e_persistFlag.
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void RemoveDeadContacts();
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/// Destroy a contact and remove it from the global contact list.
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/// @warning currently does not removes the contact from the body lists.
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// TODO fix removing from body lists & ensure that the persist flag is not accessed from removed contacts
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void Destroy(b2Contact* c);
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/// Updates the contacts and performs narrow-phase collision detection. May remove some contacts.
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void Collide();
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/// The first contact in this contact manager. Used to iterate the contacts.
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b2Contact* Start() const;
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/// An invalid marker contact that marks the end of the contact list. Used to iterate the contacts.
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b2Contact* End() const;
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/// @return the number of contacts currently in this contact manager.
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int32 GetCount() const;
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b2BroadPhase m_broadPhase;
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int32 m_contactCount;
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b2ContactFilter* m_contactFilter;
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b2ContactListener* m_contactListener;
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b2BlockAllocator* m_allocator;
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private:
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b2Contact* m_contactList;
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};
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inline b2Contact* b2ContactManager::Start() const {
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return m_contactList->m_next;
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}
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inline b2Contact* b2ContactManager::End() const {
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return m_contactList;
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}
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inline int32 b2ContactManager::GetCount() const {
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return m_contactCount;
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}
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#endif
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