mirror of https://github.com/axmolengine/axmol.git
119 lines
3.2 KiB
C++
119 lines
3.2 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 "settings.h"
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#include "test.h"
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#include "ImGuiEXT/CCImGuiEXT.h"
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// Test the prismatic joint with limits and motor options.
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class PrismaticJoint : public Test
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{
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public:
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PrismaticJoint()
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{
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b2Body* ground = NULL;
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{
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b2BodyDef bd;
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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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ground->CreateFixture(&shape, 0.0f);
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}
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m_enableLimit = true;
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m_enableMotor = false;
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m_motorSpeed = 10.0f;
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{
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b2PolygonShape shape;
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shape.SetAsBox(1.0f, 1.0f);
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b2BodyDef bd;
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bd.type = b2_dynamicBody;
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bd.position.Set(0.0f, 10.0f);
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bd.angle = 0.5f * b2_pi;
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bd.allowSleep = false;
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b2Body* body = m_world->CreateBody(&bd);
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body->CreateFixture(&shape, 5.0f);
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b2PrismaticJointDef pjd;
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// Horizontal
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pjd.Initialize(ground, body, bd.position, b2Vec2(1.0f, 0.0f));
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pjd.motorSpeed = m_motorSpeed;
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pjd.maxMotorForce = 10000.0f;
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pjd.enableMotor = m_enableMotor;
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pjd.lowerTranslation = -10.0f;
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pjd.upperTranslation = 10.0f;
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pjd.enableLimit = m_enableLimit;
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m_joint = (b2PrismaticJoint*)m_world->CreateJoint(&pjd);
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}
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}
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void UpdateUI() override
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{
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//ImGui::SetNextWindowPos(ImVec2(10.0f, 100.0f));
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ImGui::SetNextWindowSize(ImVec2(200.0f, 100.0f));
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ImGui::Begin("Joint Controls", nullptr, ImGuiWindowFlags_NoResize);
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if (ImGui::Checkbox("Limit", &m_enableLimit))
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{
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m_joint->EnableLimit(m_enableLimit);
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}
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if (ImGui::Checkbox("Motor", &m_enableMotor))
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{
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m_joint->EnableMotor(m_enableMotor);
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}
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if (ImGui::SliderFloat("Speed", &m_motorSpeed, -100.0f, 100.0f, "%.0f"))
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{
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m_joint->SetMotorSpeed(m_motorSpeed);
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}
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ImGui::End();
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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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float force = m_joint->GetMotorForce(settings.m_hertz);
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DrawString(5, m_textLine, "Motor Force = %4.0f", force);
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}
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static Test* Create()
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{
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return new PrismaticJoint;
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}
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b2PrismaticJoint* m_joint;
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float m_motorSpeed;
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bool m_enableMotor;
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bool m_enableLimit;
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};
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static int testIndex = RegisterTest("Joints", "Prismatic", PrismaticJoint::Create);
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