Big patches:

Erwin Coumans: Abstract the physics engine
Charlie C: Joystick fixes
Me: Moved the ray cast (shadows, mouse sensor & ray sensor)

1 files changed, 97 insertions, 0 deletions

diff --git a/source/gameengine/Ketsji/KX_RayCast.cpp b/source/gameengine/Ketsji/KX_RayCast.cpp
new file mode 100644
index 00000000000..98ebde9ca5a
--- /dev/null
+++ b/source/gameengine/Ketsji/KX_RayCast.cpp
@@ -0,0 +1,97 @@
+/**
+ * $Id$
+ *
+ * ***** BEGIN GPL/BL DUAL LICENSE BLOCK *****
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version. The Blender
+ * Foundation also sells licenses for use in proprietary software under
+ * the Blender License.  See http://www.blender.org/BL/ for information
+ * about this.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ *
+ * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
+ * All rights reserved.
+ *
+ * The Original Code is: all of this file.
+ *
+ * Contributor(s): none yet.
+ *
+ * ***** END GPL/BL DUAL LICENSE BLOCK *****
+ * KX_MouseFocusSensor determines mouse in/out/over events.
+ */
+
+#include "KX_RayCast.h"
+
+#include "MT_Point3.h"
+#include "MT_Vector3.h"
+
+#include "KX_IPhysicsController.h"
+#include "PHY_IPhysicsEnvironment.h"
+#include "PHY_IPhysicsController.h"
+
+bool KX_RayCast::RayTest(KX_IPhysicsController* ignore_controller, PHY_IPhysicsEnvironment* physics_environment, const MT_Point3& _frompoint, const MT_Point3& topoint, MT_Point3& result_point, MT_Vector3& result_normal, const KX_RayCast& callback)
+{
+	// Loops over all physics objects between frompoint and topoint,
+	// calling callback.RayHit for each one.
+	//
+	// callback.RayHit should return true to stop looking, or false to continue.
+	//
+	// returns true if an object was found, false if not.
+	MT_Point3 frompoint(_frompoint);
+	const MT_Vector3 todir( (topoint - frompoint).normalized() );
+	
+	PHY_IPhysicsController* hit_controller;
+	PHY__Vector3 phy_pos;
+	PHY__Vector3 phy_normal;
+
+	while((hit_controller = physics_environment->rayTest(dynamic_cast<PHY_IPhysicsController*>(ignore_controller),
+			frompoint.x(),frompoint.y(),frompoint.z(),
+			topoint.x(),topoint.y(),topoint.z(),
+			phy_pos[0],phy_pos[1],phy_pos[2],
+			phy_normal[0],phy_normal[1],phy_normal[2]))) 
+	{
+		result_point = MT_Point3(phy_pos);
+		result_normal = MT_Vector3(phy_normal);
+		KX_ClientObjectInfo* info = static_cast<KX_ClientObjectInfo*>(hit_controller->getNewClientInfo());
+		
+		if (!info)
+		{
+			MT_assert(info && "Physics controller with no client object info");
+			return false;
+		}
+		
+		if (callback.RayHit(info, result_point, result_normal))
+			return true;
+		
+		// skip past the object and keep tracing
+		/* We add 0.01 of fudge, so that if the margin && radius == 0., we don't endless loop. */
+		MT_Scalar marg = 0.01 + hit_controller->GetMargin();
+		marg += 2.f * hit_controller->GetMargin();
+		/* Calculate the other side of this object */
+		PHY__Vector3 hitpos;
+		hit_controller->getPosition(hitpos);
+		MT_Point3 hitObjPos(hitpos);
+		
+		MT_Vector3 hitvector = hitObjPos - result_point;
+		if (hitvector.dot(hitvector) > MT_EPSILON)
+		{
+			hitvector.normalize();
+			marg *= 2.*todir.dot(hitvector);
+		}
+		frompoint = result_point + marg * todir;
+	}
+	
+	return hit_controller;
+}
+