1426cd3b3a
As many open source projects have started doing it, we're removing the current year from the copyright notice, so that we don't need to bump it every year. It seems like only the first year of publication is technically relevant for copyright notices, and even that seems to be something that many companies stopped listing altogether (in a version controlled codebase, the commits are a much better source of date of publication than a hardcoded copyright statement). We also now list Godot Engine contributors first as we're collectively the current maintainers of the project, and we clarify that the "exclusive" copyright of the co-founders covers the timespan before opensourcing (their further contributions are included as part of Godot Engine contributors). Also fixed "cf." Frenchism - it's meant as "refer to / see". Backported from #70885.
101 lines
4.7 KiB
C++
101 lines
4.7 KiB
C++
/**************************************************************************/
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/* godot_motion_state.h */
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/**************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/**************************************************************************/
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/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
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/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/**************************************************************************/
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#ifndef GODOT_MOTION_STATE_H
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#define GODOT_MOTION_STATE_H
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#include "rigid_body_bullet.h"
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#include <LinearMath/btMotionState.h>
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/**
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@author AndreaCatania
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*/
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class RigidBodyBullet;
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// This class is responsible to move kinematic actor
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// and sincronize rendering engine with Bullet
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/// DOC:
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/// http://www.bulletphysics.org/mediawiki-1.5.8/index.php/MotionStates#What.27s_a_MotionState.3F
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class GodotMotionState : public btMotionState {
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/// This data is used to store the new world position for kinematic body
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btTransform bodyKinematicWorldTransf;
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/// This data is used to store last world position
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btTransform bodyCurrentWorldTransform;
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RigidBodyBullet *owner;
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public:
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GodotMotionState(RigidBodyBullet *p_owner) :
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bodyKinematicWorldTransf(btMatrix3x3(1., 0., 0., 0., 1., 0., 0., 0., 1.), btVector3(0., 0., 0.)),
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bodyCurrentWorldTransform(btMatrix3x3(1., 0., 0., 0., 1., 0., 0., 0., 1.), btVector3(0., 0., 0.)),
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owner(p_owner) {}
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/// IMPORTANT DON'T USE THIS FUNCTION TO KNOW THE CURRENT BODY TRANSFORM
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/// This class is used internally by Bullet
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/// Use GodotMotionState::getCurrentWorldTransform to know current position
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///
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/// This function is used by Bullet to get the position of object in the world
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/// if the body is kinematic Bullet will move the object to this location
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/// if the body is static Bullet doesn't move at all
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virtual void getWorldTransform(btTransform &worldTrans) const {
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worldTrans = bodyKinematicWorldTransf;
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}
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/// IMPORTANT: to move the body use: moveBody
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/// IMPORTANT: DON'T CALL THIS FUNCTION, IT IS CALLED BY BULLET TO UPDATE RENDERING ENGINE
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///
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/// This function is called each time by Bullet and set the current position of body
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/// inside the physics world.
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/// Don't allow Godot rendering scene takes world transform from this object because
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/// the correct transform is set by Bullet only after the last step when there are sub steps
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/// This function must update Godot transform rendering scene for this object.
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virtual void setWorldTransform(const btTransform &worldTrans) {
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bodyCurrentWorldTransform = worldTrans;
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owner->notify_transform_changed();
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}
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public:
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/// Use this function to move kinematic body
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/// -- or set initial transform before body creation.
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void moveBody(const btTransform &newWorldTransform) {
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bodyKinematicWorldTransf = newWorldTransform;
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}
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/// It returns the current body transform from last Bullet update
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const btTransform &getCurrentWorldTransform() const {
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return bodyCurrentWorldTransform;
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}
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};
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#endif // GODOT_MOTION_STATE_H
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