mirror of https://github.com/axmolengine/axmol.git
129 lines
3.6 KiB
C++
129 lines
3.6 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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class Platformer : public Test
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{
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public:
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enum State
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{
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e_unknown,
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e_above,
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e_below
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};
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Platformer()
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{
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// Ground
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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(-20.0f, 0.0f), b2Vec2(20.0f, 0.0f));
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ground->CreateFixture(&shape, 0.0f);
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}
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// Platform
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{
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b2BodyDef bd;
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bd.position.Set(0.0f, 10.0f);
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b2Body* body = m_world->CreateBody(&bd);
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b2PolygonShape shape;
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shape.SetAsBox(3.0f, 0.5f);
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m_platform = body->CreateFixture(&shape, 0.0f);
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m_bottom = 10.0f - 0.5f;
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m_top = 10.0f + 0.5f;
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}
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// Actor
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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(0.0f, 12.0f);
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b2Body* body = m_world->CreateBody(&bd);
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m_radius = 0.5f;
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b2CircleShape shape;
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shape.m_radius = m_radius;
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m_character = body->CreateFixture(&shape, 20.0f);
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body->SetLinearVelocity(b2Vec2(0.0f, -50.0f));
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m_state = e_unknown;
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}
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}
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void PreSolve(b2Contact* contact, const b2Manifold* oldManifold) override
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{
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Test::PreSolve(contact, oldManifold);
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b2Fixture* fixtureA = contact->GetFixtureA();
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b2Fixture* fixtureB = contact->GetFixtureB();
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if (fixtureA != m_platform && fixtureA != m_character)
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{
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return;
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}
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if (fixtureB != m_platform && fixtureB != m_character)
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{
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return;
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}
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#if 1
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b2Vec2 position = m_character->GetBody()->GetPosition();
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if (position.y < m_top + m_radius - 3.0f * b2_linearSlop)
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{
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contact->SetEnabled(false);
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}
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#else
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b2Vec2 v = m_character->GetBody()->GetLinearVelocity();
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if (v.y > 0.0f)
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{
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contact->SetEnabled(false);
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}
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#endif
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}
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void Step(Settings& settings) override
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{
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Test::Step(settings);
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b2Vec2 v = m_character->GetBody()->GetLinearVelocity();
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DrawString(5, m_textLine, "Character Linear Velocity: %f", v.y);
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}
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static Test* Create() { return new Platformer; }
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float m_radius, m_top, m_bottom;
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State m_state;
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b2Fixture* m_platform;
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b2Fixture* m_character;
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};
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static int testIndex = RegisterTest("Examples", "Platformer", Platformer::Create);
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