79 lines
3.9 KiB
C++
79 lines
3.9 KiB
C++
/**************************************************************************/
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/* jolt_custom_motion_shape.cpp */
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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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#include "jolt_custom_motion_shape.h"
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namespace {
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class JoltMotionConvexSupport final : public JPH::ConvexShape::Support {
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public:
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JoltMotionConvexSupport(JPH::Vec3Arg p_motion, const JPH::ConvexShape::Support *p_inner_support) :
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motion(p_motion),
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inner_support(p_inner_support) {}
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virtual JPH::Vec3 GetSupport(JPH::Vec3Arg p_direction) const override {
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JPH::Vec3 support = inner_support->GetSupport(p_direction);
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if (p_direction.Dot(motion) > 0) {
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support += motion;
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}
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return support;
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}
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virtual float GetConvexRadius() const override { return inner_support->GetConvexRadius(); }
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private:
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JPH::Vec3 motion = JPH::Vec3::sZero();
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const JPH::ConvexShape::Support *inner_support = nullptr;
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};
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} // namespace
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JPH::AABox JoltCustomMotionShape::GetLocalBounds() const {
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JPH::AABox aabb = inner_shape.GetLocalBounds();
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JPH::AABox aabb_translated = aabb;
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aabb_translated.Translate(motion);
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aabb.Encapsulate(aabb_translated);
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return aabb;
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}
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void JoltCustomMotionShape::GetSupportingFace(const JPH::SubShapeID &p_sub_shape_id, JPH::Vec3Arg p_direction, JPH::Vec3Arg p_scale, JPH::Mat44Arg p_center_of_mass_transform, JPH::Shape::SupportingFace &p_vertices) const {
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// This is technically called when using the enhanced internal edge removal, but `JPH::InternalEdgeRemovingCollector` will
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// only ever use the faces of the second shape in the collision pair, and this shape will always be the first in the pair, so
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// we can safely skip this.
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}
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const JPH::ConvexShape::Support *JoltCustomMotionShape::GetSupportFunction(JPH::ConvexShape::ESupportMode p_mode, JPH::ConvexShape::SupportBuffer &p_buffer, JPH::Vec3Arg p_scale) const {
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return new (&p_buffer) JoltMotionConvexSupport(motion, inner_shape.GetSupportFunction(p_mode, inner_support_buffer, p_scale));
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}
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