add rope

examples/testbed/tests/rope_test.h

@@ -0,0 +1,118 @@
+/*
+* Copyright (c) 2016-2016 Irlan Robson http://www.irlan.net
+*
+* This software is provided 'as-is', without any express or implied
+* warranty.  In no event will the authors be hebd liable for any damages
+* arising from the use of this software.
+* Permission is granted to anyone to use this software for any purpose,
+* including commercial applications, and to alter it and redistribute it
+* freely, subject to the following restrictions:
+* 1. The origin of this software must not be misrepresented; you must not
+* claim that you wrote the original software. If you use this software
+* in a product, an acknowledgment in the product documentation woubd be
+* appreciated but is not required.
+* 2. Altered source versions must be plainly marked as such, and must not be
+* misrepresented as being the original software.
+* 3. This notice may not be removed or altered from any source distribution.
+*/
+
+#ifndef ROPE_TEST_H
+#define ROPE_TEST_H
+
+extern Settings g_settings;
+
+class Rope : public Test
+{
+public:
+	enum
+	{
+		e_count = 10
+	};
+
+	Rope()
+	{
+		g_camera.m_zoom = 30.0f;
+
+		b3Vec3 vs[e_count];
+		float32 ms[e_count];
+		
+		vs[0].Set(0.0f, 0.0f, 0.0f);
+		ms[0] = 0.0f;
+		
+		for (u32 i = 1; i < e_count; ++i)
+		{
+			ms[i] = 1.0f;
+			vs[i].Set(float32(i), 0.0f, 0.0f);
+		}
+
+		b3RopeDef rd;
+		rd.gravity.Set(0.0f, -10.0f, 0.0f);
+		rd.masses = ms;
+		rd.vertices = vs;
+		rd.count = e_count;
+
+		m_rope.Initialize(rd);
+	}
+
+	void KeyDown(int button)
+	{
+		if (button == GLFW_KEY_A)
+		{
+			m_rope.SetGravity(b3Vec3(-10.0f, 0.0f, 0.0f));
+		}
+
+		if (button == GLFW_KEY_D)
+		{
+			m_rope.SetGravity(b3Vec3(10.0f, 0.0f, 0.0f));
+		}
+
+		if (button == GLFW_KEY_S)
+		{
+			m_rope.SetGravity(b3Vec3(0.0f, 0.0f, 10.0f));
+		}
+
+		if (button == GLFW_KEY_W)
+		{
+			m_rope.SetGravity(b3Vec3(0.0f, 0.0f, -10.0f));
+		}
+
+		if (button == GLFW_KEY_Q)
+		{
+			m_rope.SetGravity(b3Vec3(0.0f, 10.0f, 0.0f));
+		}
+
+		if (button == GLFW_KEY_E)
+		{
+			m_rope.SetGravity(b3Vec3(0.0f, -10.0f, 0.0f));
+		}
+	}
+
+	void Step()
+	{
+		float32 dt = g_settings.hertz > 0.0f ? 1.0f / g_settings.hertz : 0.0f;
+
+		if (g_settings.pause)
+		{
+			if (g_settings.singleStep)
+			{
+				g_settings.singleStep = false;
+			}
+			else
+			{
+				dt = 0.0f;
+			}
+		}
+
+		m_rope.Step(dt);
+		m_rope.Draw(g_debugDraw);
+	}
+
+	static Test* Create()
+	{
+		return new Rope();
+	}
+
+	b3Rope m_rope;
+};
+
+#endif