input nml:

 

spriteset(stationset1, "src/gfx/cc_grid.png") { tmpl_groundsprites(1, 1) }

 

spritegroup spritegroup1 { // alternatively: reference spriteset directly in spritelayout, and generate a spritegroup automatically using the same spriteset for all cases

  little: [ ];

  lots:   [ stationset1 ];

}

 

spriteset(stationset2, "src/gfx/cc_build.png") { tmpl_buildingsprites(1, 1) }

spriteset(stationset3, "src/gfx/cc_build.png") { tmpl_buildingsprites(1, 2) }

spriteset(stationset4, "src/gfx/cc_build.png") { tmpl_buildingsprites(1, 3) }

 

spritegroup spritegroup2 {

  little: [ stationset2 ];

  lots:   [ stationset3, stationset4 ];

}

 

spritelayout stationlayout2 {

 ground {

  sprite: spritegroup1(0, 0) // the second offset must be a compile-time constant, and is added to the first for Y direction. in this case use sprite 0 for both orientations

 }

 building {

  sprite: spritegroup2(0, 1) // use sprite 0 for X and 0+1 for Y

 }

}

 

switch (FEAT_STATION, SELF, switch3, [ ... ] {

  ...

  stationlayout2;

}

 

item(FEAT_STATION, station4) {

  property {

    ... nothing about layouts here ...

  }

  graphics {

    switch3;

  }

}

 

 

output grf:

 

action0:

  layout0: stationlayout2 using var10=0 for ground, var10=1 for building1

  layout1: stationlayout2 using var10=0 for ground, var10=1 for building1 and an additional 1 offset in the building for the Y orientation

 

action3

->  varactions according to switch3

    -> varaction(var0C)

         14: return layout0

         default:

           -> varaction(var10)

              0: return stationgroup1

              1: return stationgroup2