public Test()
{
m_destructionListener = new DestructionListener();
m_debugDraw = new CCBox2dDraw("fonts/arial-12");
b2Vec2 gravity = new b2Vec2();
gravity.Set(0.0f, -10.0f);
m_world = new b2World(gravity);
m_bomb = null;
m_textLine = 30;
m_mouseJoint = null;
m_pointCount = 0;
m_destructionListener.test = this;
m_world.SetDestructionListener(m_destructionListener);
m_world.SetContactListener(this);
m_world.SetDebugDraw(m_debugDraw);
m_world.SetContinuousPhysics(true);
m_world.SetWarmStarting(true);
m_bombSpawning = false;
m_stepCount = 0;
b2BodyDef bodyDef = new b2BodyDef();
m_groundBody = m_world.CreateBody(bodyDef);
}
void OnDestroy()
{
if (_mj != null)
{
_world.DestroyJoint(_mj);
}
_mj = null;
}
public virtual void MouseUp(b2Vec2 p)
{
if (m_mouseJoint != null)
{
m_world.DestroyJoint(m_mouseJoint);
m_mouseJoint = null;
}
if (m_bombSpawning)
{
CompleteBombSpawn(p);
}
}
/** 开始拖动刚体*/
private void startDragBody(b2Body b, float x, float y)
{
if (b == null || b.GetType() != b2Body.b2_dynamicBody)
{
return;
}
if (_mj != null)
{
_world.DestroyJoint(_mj);
}
b2MouseJointDef jointDef = new b2MouseJointDef();
jointDef.bodyA = _world.GetGroundBody();
jointDef.bodyB = b;
jointDef.target.Set(x, y);
jointDef.maxForce = 1e6f;
_mj = _world.CreateJoint(jointDef) as b2MouseJoint;
}
public virtual bool MouseDown(b2Vec2 p)
{
m_mouseWorld = p;
if (m_mouseJoint != null)
{
return(false);
}
// Make a small box.
b2AABB aabb = new b2AABB();
b2Vec2 d = new b2Vec2();
d.Set(0.001f, 0.001f);
aabb.LowerBound = p - d;
aabb.UpperBound = p + d;
// Query the world for overlapping shapes.
QueryCallback callback = new QueryCallback(p);
m_world.QueryAABB(callback, aabb);
if (callback.m_fixture != null)
{
b2Body body = callback.m_fixture.Body;
b2MouseJointDef md = new b2MouseJointDef();
md.BodyA = m_groundBody;
md.BodyB = body;
md.target = p;
md.maxForce = 1000.0f * body.Mass;
m_mouseJoint = (b2MouseJoint)m_world.CreateJoint(md);
body.SetAwake(true);
return(true);
}
return(false);
}
internal static b2Joint Create(b2JointDef def)
{
b2Joint joint = null;
switch (def.type)
{
case b2JointType.e_distanceJoint:
{
joint = new b2DistanceJoint((b2DistanceJointDef)def);
}
break;
case b2JointType.e_mouseJoint:
{
joint = new b2MouseJoint((b2MouseJointDef)def);
}
break;
case b2JointType.e_prismaticJoint:
{
joint = new b2PrismaticJoint((b2PrismaticJointDef)def);
}
break;
case b2JointType.e_revoluteJoint:
{
joint = new b2RevoluteJoint((b2RevoluteJointDef)def);
}
break;
case b2JointType.e_pulleyJoint:
{
joint = new b2PulleyJoint((b2PulleyJointDef)def);
}
break;
case b2JointType.e_gearJoint:
{
joint = new b2GearJoint((b2GearJointDef)def);
}
break;
case b2JointType.e_wheelJoint:
{
joint = new b2WheelJoint((b2WheelJointDef)def);
}
break;
case b2JointType.e_weldJoint:
{
joint = new b2WeldJoint((b2WeldJointDef)def);
}
break;
case b2JointType.e_frictionJoint:
{
joint = new b2FrictionJoint((b2FrictionJointDef)def);
}
break;
case b2JointType.e_ropeJoint:
{
joint = new b2RopeJoint((b2RopeJointDef)def);
}
break;
case b2JointType.e_motorJoint:
{
joint = new b2MotorJoint((b2MotorJointDef)def);
}
break;
default:
Debug.Assert(false);
break;
}
return(joint);
}
internal static global::System.Runtime.InteropServices.HandleRef getCPtr(b2MouseJoint obj)
{
return((obj == null) ? new global::System.Runtime.InteropServices.HandleRef(null, global::System.IntPtr.Zero) : obj.swigCPtr);
}
