First of all why making thinner woods in tropical areas? I would say that in Burma or so in real life it ís difficult to see vehicles crossing the jungle.
For that purpose I created much denser woods for jungle maps.
https://www.sas1946.com/main/index.php/topic,10535.108.html (page 10/11)
Anyway, I understand you want to have the woods thinner and that's fairly easy to do.
You need to have the Woods0 till Woods4 textures and then it is just a matter of making the trees smaller with the eraser tool (GIMP is freeware and has a lot of options for editing .tga/jpg/bmp files)
If you don't have the Woods files in Mapmods/maps/_Tex/forest/ you need to extract them.
SFS extractor info here:
https://www.sas1946.com/main/index.php/topic,16581.0.htmlThere is an other option for creating thinner woods by editing the load.ini of the map.
Usually the trees in Wood3 and Wood4 (=top of trees) are smaller than in Wood1 and Wood2.
So instead of:
Wood0 = forest/summer/Jungle0Burma.tga
Wood1 = forest/summer/Jungle1.tga
Wood2 = forest/summer/Jungle2.tga
Wood3 = forest/summer/Jungle3.tga
Wood4 = forest/summer/Jungle4.tga
You fill in:
Wood0 = forest/summer/Jungle0Burma.tga
Wood1 = forest/summer/Jungle4.tga
Wood2 = forest/summer/Jungle3.tga
Wood3 = forest/summer/Jungle4.tga
Wood4 = forest/summer/Jungle4.tga
Or something like that.
It is a matter of trial and error to find the right density of woods.