Add initial prototype.

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

@@ -0,0 +1,174 @@
+// 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"
+
+extern B2_API bool g_blockSolve;
+
+class BoxStack : public Test
+{
+public:
+
+	enum
+	{
+		e_columnCount = 1,
+		e_rowCount = 15
+		//e_columnCount = 1,
+		//e_rowCount = 1
+	};
+
+	BoxStack()
+	{
+		{
+			b2BodyDef bd;
+			b2Body* ground = m_world->CreateBody(&bd);
+
+			b2EdgeShape shape;
+			shape.SetTwoSided(b2Vec2(-40.0f, 0.0f), b2Vec2(40.0f, 0.0f));
+			ground->CreateFixture(&shape, 0.0f);
+
+			shape.SetTwoSided(b2Vec2(20.0f, 0.0f), b2Vec2(20.0f, 20.0f));
+			ground->CreateFixture(&shape, 0.0f);
+		}
+
+		float xs[5] = {0.0f, -10.0f, -5.0f, 5.0f, 10.0f};
+
+		for (int32 j = 0; j < e_columnCount; ++j)
+		{
+			b2PolygonShape shape;
+			shape.SetAsBox(0.5f, 0.5f);
+
+			b2FixtureDef fd;
+			fd.shape = &shape;
+			fd.density = 1.0f;
+			fd.friction = 0.3f;
+
+			for (int i = 0; i < e_rowCount; ++i)
+			{
+				b2BodyDef bd;
+				bd.type = b2_dynamicBody;
+
+				int32 n = j * e_rowCount + i;
+				b2Assert(n < e_rowCount * e_columnCount);
+				m_indices[n] = n;
+				bd.userData.pointer = n;
+
+				float x = 0.0f;
+				//float x = RandomFloat(-0.02f, 0.02f);
+				//float x = i % 2 == 0 ? -0.01f : 0.01f;
+				bd.position.Set(xs[j] + x, 0.55f + 1.1f * i);
+				b2Body* body = m_world->CreateBody(&bd);
+
+				m_bodies[n] = body;
+
+				body->CreateFixture(&fd);
+			}
+		}
+
+		m_bullet = NULL;
+	}
+
+	void Keyboard(int key) override
+	{
+		switch (key)
+		{
+		case GLFW_KEY_COMMA:
+			if (m_bullet != NULL)
+			{
+				m_world->DestroyBody(m_bullet);
+				m_bullet = NULL;
+			}
+
+			{
+				b2CircleShape shape;
+				shape.m_radius = 0.25f;
+
+				b2FixtureDef fd;
+				fd.shape = &shape;
+				fd.density = 20.0f;
+				fd.restitution = 0.05f;
+
+				b2BodyDef bd;
+				bd.type = b2_dynamicBody;
+				bd.bullet = true;
+				bd.position.Set(-31.0f, 5.0f);
+
+				m_bullet = m_world->CreateBody(&bd);
+				m_bullet->CreateFixture(&fd);
+
+				m_bullet->SetLinearVelocity(b2Vec2(400.0f, 0.0f));
+			}
+			break;
+                
+        case GLFW_KEY_B:
+            g_blockSolve = !g_blockSolve;
+            break;
+		}
+	}
+
+	void Step(Settings& settings) override
+	{
+		Test::Step(settings);
+		g_debugDraw.DrawString(5, m_textLine, "Press: (,) to launch a bullet.");
+		m_textLine += m_textIncrement;
+		g_debugDraw.DrawString(5, m_textLine, "Blocksolve = %d", g_blockSolve);
+		//if (m_stepCount == 300)
+		//{
+		//	if (m_bullet != NULL)
+		//	{
+		//		m_world->DestroyBody(m_bullet);
+		//		m_bullet = NULL;
+		//	}
+
+		//	{
+		//		b2CircleShape shape;
+		//		shape.m_radius = 0.25f;
+
+		//		b2FixtureDef fd;
+		//		fd.shape = &shape;
+		//		fd.density = 20.0f;
+		//		fd.restitution = 0.05f;
+
+		//		b2BodyDef bd;
+		//		bd.type = b2_dynamicBody;
+		//		bd.bullet = true;
+		//		bd.position.Set(-31.0f, 5.0f);
+
+		//		m_bullet = m_world->CreateBody(&bd);
+		//		m_bullet->CreateFixture(&fd);
+
+		//		m_bullet->SetLinearVelocity(b2Vec2(400.0f, 0.0f));
+		//	}
+		//}
+	}
+
+	static Test* Create()
+	{
+		return new BoxStack;
+	}
+
+	b2Body* m_bullet;
+	b2Body* m_bodies[e_rowCount * e_columnCount];
+	int32 m_indices[e_rowCount * e_columnCount];
+};
+
+static int testIndex = RegisterTest("Stacking", "Boxes", BoxStack::Create);