Added ability to have karts have random wheel rotation; see beagle/kart.xml for example.

git-svn-id: svn+ssh://svn.code.sf.net/p/supertuxkart/code/main/trunk@9205 178a84e3-b1eb-0310-8ba1-8eac791a3b58

src/karts/kart.cpp

@@ -119,7 +119,7 @@ Kart::Kart (const std::string& ident, Track* track, int position, bool is_first_
     // Set position and heading:
     m_reset_transform         = init_transform;
     m_speed                   = 0.0f;
-    m_wheel_rotation          = 0;
+	m_wheel_rotation          = 0;
 
     m_kart_model->setKart(this);
     
@@ -292,6 +292,7 @@ void Kart::createPhysics()
         wheel.m_wheelsDampingCompression = m_kart_properties->getWheelDampingCompression();
         wheel.m_frictionSlip             = m_kart_properties->getFrictionSlip();
         wheel.m_rollInfluence            = m_kart_properties->getRollInfluence();
+        wheel.m_rotation				 = int(m_kart_properties->hasRandomWheels()) * (rand() % 360);
     }
     // Obviously these allocs have to be properly managed/freed
     btTransform t;

src/karts/kart_properties.cpp

@@ -101,6 +101,7 @@ KartProperties::KartProperties(const std::string &filename)
     m_shape                  = 32;  // close enough to a circle.
     m_engine_sfx_type        = "engine_small";
     m_kart_model             = NULL;
+    m_has_rand_wheels        = false;
     // The default constructor for stk_config uses filename=""
     if (filename != "") load(filename, "kart");
 }   // KartProperties
@@ -238,6 +239,8 @@ void KartProperties::getAllData(const XMLNode * root)
 
     root->get("groups",            &m_groups           );
 
+	root->get("RandomWheelRot",    &m_has_rand_wheels   );
+
     if(const XMLNode *dimensions_node = root->getNode("center"))
         dimensions_node->get("gravity-shift", &m_gravity_center_shift);
 

src/karts/kart_properties.hpp

@@ -304,6 +304,8 @@ private:
 
     void  load              (const std::string &filename,
                              const std::string &node);
+	/** If the kart is supposed to have random wheel rotation at start. */
+	bool m_has_rand_wheels;
 
 public:
           KartProperties    (const std::string &filename="");
@@ -630,6 +632,7 @@ public:
     /** Returns how long it takes for the swatter to swat at an item. */
     float getSwatterItemAnimationTime() const 
                                       {return m_swatter_item_animation_time; }
+	bool hasRandomWheels() const { return m_has_rand_wheels; }
 };   // KartProperties
 
 #endif