//
// Placeholder outdoor sky texture
//

// Modified by GoliathVT on Jan 3, 2005
//
// The sky texture will now fade according
// to night and day cycles
//
// Fixed by passing the current time using Parm9 to effectively "reset"
// the lookup time to zero... this allows the CLAMPed lookup table
// to repeat itself AND ensures that there are no syncronization
// problems.  A single lookup table can also be used in this case
// because a value of 1 can be added and then time * Parm10 can be
// subtracted, effectively running the lookup table backwards (1->0).
//
// See the fadeSky() levelscript function for more details.
//

table skyFadeTable { clamp { 0, 1 } }


/////////////////////////////////////////////////////////////////////////////


textures/euro/skies/spannerday
{
   qer_editorimage   env/spannerday_up.tga

   noFragment
   noshadows
   noimpact
   nooverlays
   forceOpaque

   {
      if (Parm11 == 0)
         // stay day
         blend      add   
         cameraCubeMap   env/spannerday
         texgen      skybox
         texgen         wobblesky .0 .0 .0
         rgb      1
   }

/////////////////////////////////////////////////////////////////////////////

   {
      if (Parm11 == 1)
         // fade to night:
         // fade out day sky
         blend      add   
         cameraCubeMap   env/spannerday
         texgen      skybox
         texgen         wobblesky .0 .0 .0
         rgb      skyFadeTable[ (-1 * (time - Parm9) * Parm10 + 1) ]
   }

   {
      if (Parm11 == 1)
         // fade to night:
         // fade in night sky
         blend      add   
         cameraCubeMap   env/spannernight
         texgen      skybox         
         texgen         wobblesky .0 .0 .0
         rgb      skyFadeTable[ ((time - Parm9) * Parm10) ]
   }

/////////////////////////////////////////////////////////////////////////////

   {
      if (Parm11 == 2)
         // stay night
         blend      add   
         cameraCubeMap   env/spannernight
         texgen      skybox         
         texgen         wobblesky .0 .0 .0
         rgb      1
   }

/////////////////////////////////////////////////////////////////////////////

   {
      if (Parm11 == 3)
         // fade to day:
         // fade out night sky
         blend      add   
         cameraCubeMap   env/spannernight
         texgen      skybox         
         texgen         wobblesky .0 .0 .0
         rgb      skyFadeTable[ (-1 * (time - Parm9) * Parm10 + 1) ]
   }

   {
      if (Parm11 == 3)
         // fade to day:
         // fade in day sky
         blend      add   
         cameraCubeMap   env/spannerday
         texgen      skybox         
         texgen         wobblesky .0 .0 .0
         rgb      skyFadeTable[ ((time - Parm9) * Parm10) ]
   }
}

// EOF