mirror of https://github.com/axmolengine/axmol.git
76 lines
2.5 KiB
C++
76 lines
2.5 KiB
C++
// 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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#include "test.h"
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// Note: even with a restitution of 1.0, there is some energy change
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// due to position correction.
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class Restitution : public Test
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{
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public:
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Restitution()
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{
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const float threshold = 10.0f;
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{
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b2BodyDef bd;
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b2Body* ground = m_world->CreateBody(&bd);
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b2EdgeShape shape;
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shape.SetTwoSided(b2Vec2(-40.0f, 0.0f), b2Vec2(40.0f, 0.0f));
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b2FixtureDef fd;
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fd.shape = &shape;
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fd.restitutionThreshold = threshold;
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ground->CreateFixture(&fd);
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}
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{
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b2CircleShape shape;
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shape.m_radius = 1.0f;
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b2FixtureDef fd;
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fd.shape = &shape;
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fd.density = 1.0f;
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float restitution[7] = {0.0f, 0.1f, 0.3f, 0.5f, 0.75f, 0.9f, 1.0f};
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for (int32 i = 0; i < 7; ++i)
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{
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b2BodyDef bd;
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bd.type = b2_dynamicBody;
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bd.position.Set(-10.0f + 3.0f * i, 20.0f);
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b2Body* body = m_world->CreateBody(&bd);
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fd.restitution = restitution[i];
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fd.restitutionThreshold = threshold;
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body->CreateFixture(&fd);
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}
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}
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}
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static Test* Create() { return new Restitution; }
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};
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static int testIndex = RegisterTest("Forces", "Restitution", Restitution::Create);
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