[NitE]

TranslateEntity player,0,-gravity,0
mouselook(player)
player_move(player)

jumppick=LinePick(EntityX(player,1),EntityY(cam,1) ,EntityZ(player,1),0,-5.1,0)



If KeyHit(57) And jumppick=>1
y=EntityY(player,1)
jump_bool=1
EndIf

If jump_bool=1 And EntityY(player,1)=<y+jump_height
gravity=-.3
Else
jump_bool=0
gravity=.3
EndIf

из старого исходника