[Racer-svn] SF.net SVN: racer:[312] trunk/racer/Engine/GameObjects/Car.cpp

[<jl...@us...>]

Revision: 312
          http://racer.svn.sourceforge.net/racer/?rev=312&view=rev
Author:   jlegg
Date:     2010-06-25 18:20:52 +0000 (Fri, 25 Jun 2010)

Log Message:
-----------
Improve handeling of car 2.

Modified Paths:
--------------
    trunk/racer/Engine/GameObjects/Car.cpp

Modified: trunk/racer/Engine/GameObjects/Car.cpp
===================================================================
--- trunk/racer/Engine/GameObjects/Car.cpp	2010-06-25 16:58:14 UTC (rev 311)
+++ trunk/racer/Engine/GameObjects/Car.cpp	2010-06-25 18:20:52 UTC (rev 312)
@@ -22,7 +22,16 @@
 
 const btScalar _force_scale = 1.5;
 
+/// stearing torque scale per car model. High values imply car turns easily.
+const btScalar _car_stearing_scale[2] = {0.02, 0.03};
+/// stearing torque in midair per car model.
+const btScalar _car_stearing_scale_midair[2] = {0.01, 0.015};
+/** control over car sliding. Higher values give strong manual sliding and
+ * strong recovery from sliding when cornering.
+ */
+const btScalar _car_slide_scale[2] = {1.0, 1.5};
 
+
 /* Correction for stupid bouncing my cars up in the air when they drive over the
  * internal edges of flat triangulated sections of the road.
  */
@@ -508,12 +517,12 @@
         
         // turning left and right.
         btVector3 torque_vector = btVector3(0.0, 0.0,
-            torque.getZ() * 0.02 * _force_scale);
+            torque.getZ() * _car_stearing_scale[car_model] * _force_scale);
         local_torque = rotation_transform(torque_vector);
     } else {
         // allow reduced stearing in mid air.
         btVector3 torque_vector = btVector3(0.0, 0.0,
-            torque.getZ() * 0.01 * _force_scale);
+            torque.getZ() * _car_stearing_scale_midair[car_model] * _force_scale);
         local_torque = rotation_transform(torque_vector);
         // note that you carry on in roughly the same direction.
         // The sliding physics make it slightly more useful.
@@ -542,7 +551,7 @@
     if (slide_assist < 0.0) slide_assist = 0.0;
     // If sliding the right way really fast, put a limit on the speed.
     if (slide_assist > 35.0) slide_assist = 35.0;
-    unforce.setX(unforce.x() - sideways_velocity * (50.0 - slide_assist));
+    unforce.setX((unforce.x() - sideways_velocity * (50.0 - slide_assist)) * _car_slide_scale[car_model]);
     
     if (sideways_velocity < 0)
     {


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