Texture/mesh glitch

[r.tos]

20170203142205_1.jpg

Hey, so I'm getting into mapping with hammer, I'm wondering why those glitchs appear on the ramp. Those polygons doesn't exist in hammer as far as I can tell, so it must be created by the compiler. I'm sure it's a common bug but I didn't find anything relevant on google.

Also, it would be very handy to have experienced mappers on steam for this kind of quick questions, please add me !
http://steamcommunity.com/profiles/76561197982581894/


Edit: I realise the screenshot is pretty bad, what I'm talking about is those 4 flat polygons coming out of the top of the ramp.
Edit2: While I'm at it, how do you deal with fall damage? Is it server sided and I shouldn't bother or should I embed something in the map to negate fall damages?

[Sacred]

Use func_detail on the ramp (CTRL + T -> func_detail). For fall damage you best decompile a map which has it removed, but you just need a filter_damage_type that disallows FALL and use a trigger_multiple at spawn with the outputs OnStartTouch !activator SetDamageFilter "name of the filter_damage_type" (see: http://forums.solidsurf.info/index.php?topic=894.0)

[r.tos]

Thanks, all good!