git subrepo clone --branch=sono6good https://github.com/essej/JUCE.git deps/juce

subrepo:
  subdir:   "deps/juce"
  merged:   "b13f9084e"
upstream:
  origin:   "https://github.com/essej/JUCE.git"
  branch:   "sono6good"
  commit:   "b13f9084e"
git-subrepo:
  version:  "0.4.3"
  origin:   "https://github.com/ingydotnet/git-subrepo.git"
  commit:   "2f68596"

deps/juce/examples/Assets/Box2DTests/Breakable.h

@@ -0,0 +1,155 @@
+/*
+* Copyright (c) 2008-2009 Erin Catto http://www.box2d.org
+*
+* This software is provided 'as-is', without any express or implied
+* warranty.  In no event will the authors be held 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 would 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 BREAKABLE_TEST_H
+#define BREAKABLE_TEST_H
+
+// This is used to test sensor shapes.
+class Breakable : public Test
+{
+public:
+
+    enum
+    {
+        e_count = 7
+    };
+
+    Breakable()
+    {
+        // Ground body
+        {
+            b2BodyDef bd;
+            b2Body* ground = m_world->CreateBody(&bd);
+
+            b2EdgeShape shape;
+            shape.Set(b2Vec2(-40.0f, 0.0f), b2Vec2(40.0f, 0.0f));
+            ground->CreateFixture(&shape, 0.0f);
+        }
+
+        // Breakable dynamic body
+        {
+            b2BodyDef bd;
+            bd.type = b2_dynamicBody;
+            bd.position.Set(0.0f, 40.0f);
+            bd.angle = 0.25f * b2_pi;
+            m_body1 = m_world->CreateBody(&bd);
+
+            m_shape1.SetAsBox(0.5f, 0.5f, b2Vec2(-0.5f, 0.0f), 0.0f);
+            m_piece1 = m_body1->CreateFixture(&m_shape1, 1.0f);
+
+            m_shape2.SetAsBox(0.5f, 0.5f, b2Vec2(0.5f, 0.0f), 0.0f);
+            m_piece2 = m_body1->CreateFixture(&m_shape2, 1.0f);
+        }
+
+        m_break = false;
+        m_broke = false;
+    }
+
+    void PostSolve(b2Contact* contact, const b2ContactImpulse* impulse)
+    {
+        if (m_broke)
+        {
+            // The body already broke.
+            return;
+        }
+
+        // Should the body break?
+        int32 count = contact->GetManifold()->pointCount;
+
+        float32 maxImpulse = 0.0f;
+        for (int32 i = 0; i < count; ++i)
+        {
+            maxImpulse = b2Max(maxImpulse, impulse->normalImpulses[i]);
+        }
+
+        if (maxImpulse > 40.0f)
+        {
+            // Flag the body for breaking.
+            m_break = true;
+        }
+    }
+
+    void Break()
+    {
+        // Create two bodies from one.
+        b2Body* body1 = m_piece1->GetBody();
+        b2Vec2 center = body1->GetWorldCenter();
+
+        body1->DestroyFixture(m_piece2);
+        m_piece2 = NULL;
+
+        b2BodyDef bd;
+        bd.type = b2_dynamicBody;
+        bd.position = body1->GetPosition();
+        bd.angle = body1->GetAngle();
+
+        b2Body* body2 = m_world->CreateBody(&bd);
+        m_piece2 = body2->CreateFixture(&m_shape2, 1.0f);
+
+        // Compute consistent velocities for new bodies based on
+        // cached velocity.
+        b2Vec2 center1 = body1->GetWorldCenter();
+        b2Vec2 center2 = body2->GetWorldCenter();
+
+        b2Vec2 velocity1 = m_velocity + b2Cross(m_angularVelocity, center1 - center);
+        b2Vec2 velocity2 = m_velocity + b2Cross(m_angularVelocity, center2 - center);
+
+        body1->SetAngularVelocity(m_angularVelocity);
+        body1->SetLinearVelocity(velocity1);
+
+        body2->SetAngularVelocity(m_angularVelocity);
+        body2->SetLinearVelocity(velocity2);
+    }
+
+    void Step(Settings* settings)
+    {
+        if (m_break)
+        {
+            Break();
+            m_broke = true;
+            m_break = false;
+        }
+
+        // Cache velocities to improve movement on breakage.
+        if (m_broke == false)
+        {
+            m_velocity = m_body1->GetLinearVelocity();
+            m_angularVelocity = m_body1->GetAngularVelocity();
+        }
+
+        Test::Step(settings);
+    }
+
+    static Test* Create()
+    {
+        return new Breakable;
+    }
+
+    b2Body* m_body1;
+    b2Vec2 m_velocity;
+    float32 m_angularVelocity;
+    b2PolygonShape m_shape1;
+    b2PolygonShape m_shape2;
+    b2Fixture* m_piece1;
+    b2Fixture* m_piece2;
+
+    bool m_broke;
+    bool m_break;
+};
+
+#endif