Use water in tracks

[supertuxkart-sourceforge-migration]

Author: auria

I coded the C++ parts of a water splash, which can be seen in lighthouse. We need the exporter to support this

Migrated-From: https://sourceforge.net/apps/trac/supertuxkart/ticket/41

[supertuxkart-sourceforge-migration]

Author: auria Forgot to say, ideally we should be able to specify which splash effect is to be used (just choosing a particles XML file)

[supertuxkart-sourceforge-migration]

Author: hikerstk Support for this is added to STK and the exporter, the only thing missing is the description of the particle files in the wiki, which I'll leave to auria :) (changed priority to minor since this is now no release blocker anymore).

[supertuxkart-sourceforge-migration]

Author: auria Joerg, I'm bouncing this back to you, since as far as I know exporter support for water is only partial (your post to this ticket seems to imply that the exporter is complete, but on IRC you told me otherwise; and indeed the wiki does not appear to document how to make surfaces with splashes

[supertuxkart-sourceforge-migration]

Author: auria (BTW, particles are now documented on the wiki).

I'm bumping the priority since in many tracks I noticed you can drive on water, this looks just bad

[supertuxkart-sourceforge-migration]

Author: auria The documentation part is done : http://supertuxkart.sourceforge.net/Track_Maker%27s_Guide#A_nice_water_splash

I guess the current support is all we needed, with perhaps the exception of clarifying what "below-surface" is used for (at this time it appears unused).

I'm assigning this to me, what's left is to use it in tracks

[supertuxkart-sourceforge-migration]

Author: auria Done on all major water areas