physics.box2d: Rid #include of 'box2d.h'.

3-mid/physics/implement/box2d/generate/box2d_c.i

@@ -17,7 +17,7 @@ extern "C"
 
 %import "../../c_math/generate/c_math_c.i"
 
-%include "../source/c/box2d.h"
+# %include "../source/c/box2d.h"
 %include "../source/c/box2d-shape.h"
 %include "../source/c/box2d-object.h"
 %include "../source/c/box2d-joint.h"

3-mid/physics/implement/box2d/source/c/box2d-joint.h

@@ -1,7 +1,7 @@
 #ifndef C_BOX2D_JOINT_H
 #define C_BOX2D_JOINT_H
 
-#include "box2d.h"
+#include "c_math.h"
 #include "box2d-object.h"
 
 

3-mid/physics/implement/box2d/source/c/box2d-object.h

@@ -2,7 +2,7 @@
 #define C_BOX2D_OBJECT_H
 
 
-#include "box2d.h"
+#include "c_math.h"
 #include "box2d-shape.h"
 
 

3-mid/physics/implement/box2d/source/c/box2d-shape.h

@@ -1,7 +1,7 @@
 #ifndef C_BOX2D_SHAPE_H
 #define C_BOX2D_SHAPE_H
 
-#include "box2d.h"
+#include "c_math.h"
 
 
 

3-mid/physics/implement/box2d/source/c/box2d-space.cpp

@@ -43,8 +43,7 @@ public:
   b2Fixture*   Nearest;
 
   float
-  ReportFixture
-    (b2Fixture*      fixture,
+  ReportFixture (b2Fixture*      fixture,
 		             const b2Vec2&   point,
 		             const b2Vec2&   normal,
 		             float           fraction)
@@ -57,6 +56,7 @@ public:
 };
 
 
+
 /// Collisions
 //
 
@@ -223,7 +223,8 @@ b2d_free_Space (struct Space*    Self)
 
 
 void
-b2d_Space_Gravity_is (Space*   Self,    Vector_3*     Now)
+b2d_Space_Gravity_is (Space*      Self,    
+                      Vector_3*   Now)
 {
   b2World*   the_World = to_World (Self);
 
@@ -232,7 +233,8 @@ b2d_Space_Gravity_is (Space*   Self,    Vector_3*     Now)
 
 
 void
-b2d_Space_evolve (Space*   Self,     float   By)
+b2d_Space_evolve (Space*   Self,
+                  float    By)
 {
   b2World*            the_World            = to_World (Self);
   contact_Listener*   the_contact_Listener = dynamic_cast <contact_Listener*> (the_World->GetContactManager().m_contactListener);
@@ -244,19 +246,20 @@ b2d_Space_evolve (Space*   Self,     float   By)
 
 
 void
-b2d_Space_add_Object (Space*   Self,    Object*   the_Object)
+b2d_Space_add_Object (Space*    Self,
+                      Object*   the_Object)
 {
-  b2World*   the_World = (b2World*)Self;
+  b2World*   the_World = (b2World*) Self;
 
   the_Object->body = the_World->CreateBody (&the_Object->bodyDef);
-  // the_Object->body->SetUserData (the_Object);
-
+  the_Object->body->SetUserData   (the_Object);
   the_Object->body->CreateFixture (&the_Object->fixtureDef);
 }
 
 
 void
-b2d_Space_rid_Object (Space*   Self,    Object*   the_Object)
+b2d_Space_rid_Object (Space*    Self,
+                      Object*   the_Object)
 {
   ((b2World*)Self)->DestroyBody (the_Object->body);
   the_Object->body = 0;
@@ -264,7 +267,8 @@ b2d_Space_rid_Object (Space*   Self,    Object*   the_Object)
 
 
 void
-b2d_Space_add_Joint (Space*   Self,    Joint*   the_Joint)
+b2d_Space_add_Joint (Space*   Self, 
+                     Joint*   the_Joint)
 {
   b2World*           the_World = (b2World*)    Self;
   b2JointDef*        jointDef  = (b2JointDef*) the_Joint;
@@ -375,4 +379,81 @@ b2d_Space_cast_Ray (Space*   Self,    Vector_3*   From,
 }
 
 
+
+/// Pointcasts
+//
+
+class QueryCallback : public b2QueryCallback
+{
+public:
+	QueryCallback (const b2Vec2& point)
+	{
+		m_point   = point;
+		m_fixture = NULL;
+	}
+
+
+	bool
+	ReportFixture (b2Fixture*   fixture) override
+	{
+		b2Body*   body   = fixture->GetBody();
+		bool      inside = fixture->TestPoint (m_point);
+			
+    if (inside)
+		{
+	     m_fixture = fixture;
+			 return false;            // We are done, terminate the query.
+		}
+		
+		return true;                // Continue the query.
+  }
+
+  b2Vec2       m_point;
+	b2Fixture*   m_fixture;
+};
+
+
+
+b2d_point_Collision    
+b2d_Space_cast_Point (Space*      Self,
+                      Vector_3*   Point)
+{
+   b2d_point_Collision   Result;
+   b2World*              the_World = (b2World *)Self;
+   const b2Vec2          p         = b2Vec2 (Point->x,
+                                             Point->y);
+   // Make a small box.
+   //
+   b2AABB   aabb;
+   b2Vec2   d;
+
+   d.Set (0.001f, 0.001f);
+
+   aabb.lowerBound = p - d;
+   aabb.upperBound = p + d;
+
+   printf ("\n");
+   printf ("b2d_Space_cast_Point ~ p = %f   %f\n", p.x, p.y);
+
+   // Query the world for overlapping shapes.
+   //
+   QueryCallback   Callback (p);
+
+   the_World->QueryAABB (&Callback, aabb);
+
+   if (Callback.m_fixture)
+   {
+     Result.near_Object = (Object*) Callback.m_fixture->GetBody()->GetUserData().pointer;
+   }
+   else
+   {
+     Result.near_Object = NULL;
+   }
+
+   Result.Site_world = *Point;
+   return Result;
+}
+
+
+
 } // extern "C"

3-mid/physics/implement/box2d/source/c/box2d-space.h

@@ -2,7 +2,7 @@
 #define C_BOX2D_SPACE_H
 
 
-#include "box2d.h"
+#include "c_math.h"
 #include "box2d-object.h"
 #include "box2d-joint.h"