Add initial prototype.

3-mid/physics/implement/box2d/contrib/testbed/tests/bullet_test.cpp

@@ -0,0 +1,139 @@
+// MIT License
+
+// Copyright (c) 2019 Erin Catto
+
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+
+#include "test.h"
+
+class BulletTest : public Test
+{
+public:
+
+	BulletTest()
+	{
+		{
+			b2BodyDef bd;
+			bd.position.Set(0.0f, 0.0f);
+			b2Body* body = m_world->CreateBody(&bd);
+
+			b2EdgeShape edge;
+
+			edge.SetTwoSided(b2Vec2(-10.0f, 0.0f), b2Vec2(10.0f, 0.0f));
+			body->CreateFixture(&edge, 0.0f);
+
+			b2PolygonShape shape;
+			shape.SetAsBox(0.2f, 1.0f, b2Vec2(0.5f, 1.0f), 0.0f);
+			body->CreateFixture(&shape, 0.0f);
+		}
+
+		{
+			b2BodyDef bd;
+			bd.type = b2_dynamicBody;
+			bd.position.Set(0.0f, 4.0f);
+
+			b2PolygonShape box;
+			box.SetAsBox(2.0f, 0.1f);
+
+			m_body = m_world->CreateBody(&bd);
+			m_body->CreateFixture(&box, 1.0f);
+
+			box.SetAsBox(0.25f, 0.25f);
+
+			//m_x = RandomFloat(-1.0f, 1.0f);
+			m_x = 0.20352793f;
+			bd.position.Set(m_x, 10.0f);
+			bd.bullet = true;
+
+			m_bullet = m_world->CreateBody(&bd);
+			m_bullet->CreateFixture(&box, 100.0f);
+
+			m_bullet->SetLinearVelocity(b2Vec2(0.0f, -50.0f));
+		}
+	}
+
+	void Launch()
+	{
+		m_body->SetTransform(b2Vec2(0.0f, 4.0f), 0.0f);
+		m_body->SetLinearVelocity(b2Vec2_zero);
+		m_body->SetAngularVelocity(0.0f);
+
+		m_x = RandomFloat(-1.0f, 1.0f);
+		m_bullet->SetTransform(b2Vec2(m_x, 10.0f), 0.0f);
+		m_bullet->SetLinearVelocity(b2Vec2(0.0f, -50.0f));
+		m_bullet->SetAngularVelocity(0.0f);
+
+		extern B2_API int32 b2_gjkCalls, b2_gjkIters, b2_gjkMaxIters;
+		extern B2_API int32 b2_toiCalls, b2_toiIters, b2_toiMaxIters;
+		extern B2_API int32 b2_toiRootIters, b2_toiMaxRootIters;
+
+		b2_gjkCalls = 0;
+		b2_gjkIters = 0;
+		b2_gjkMaxIters = 0;
+
+		b2_toiCalls = 0;
+		b2_toiIters = 0;
+		b2_toiMaxIters = 0;
+		b2_toiRootIters = 0;
+		b2_toiMaxRootIters = 0;
+	}
+
+	void Step(Settings& settings) override
+	{
+		Test::Step(settings);
+
+		extern B2_API int32 b2_gjkCalls, b2_gjkIters, b2_gjkMaxIters;
+		extern B2_API int32 b2_toiCalls, b2_toiIters;
+		extern B2_API int32 b2_toiRootIters, b2_toiMaxRootIters;
+
+		if (b2_gjkCalls > 0)
+		{
+			g_debugDraw.DrawString(5, m_textLine, "gjk calls = %d, ave gjk iters = %3.1f, max gjk iters = %d",
+				b2_gjkCalls, b2_gjkIters / float(b2_gjkCalls), b2_gjkMaxIters);
+			m_textLine += m_textIncrement;
+		}
+
+		if (b2_toiCalls > 0)
+		{
+			g_debugDraw.DrawString(5, m_textLine, "toi calls = %d, ave toi iters = %3.1f, max toi iters = %d",
+				b2_toiCalls, b2_toiIters / float(b2_toiCalls), b2_toiMaxRootIters);
+			m_textLine += m_textIncrement;
+
+			g_debugDraw.DrawString(5, m_textLine, "ave toi root iters = %3.1f, max toi root iters = %d",
+				b2_toiRootIters / float(b2_toiCalls), b2_toiMaxRootIters);
+			m_textLine += m_textIncrement;
+		}
+
+		if (m_stepCount % 60 == 0)
+		{
+			Launch();
+		}
+	}
+
+	static Test* Create()
+	{
+		return new BulletTest;
+	}
+
+	b2Body* m_body;
+	b2Body* m_bullet;
+	float m_x;
+};
+
+static int testIndex = RegisterTest("Continuous", "Bullet Test", BulletTest::Create);