try this code
sync on
sync rate 0
cls
hide mouse
autocam off
make matrix 1,100,100,20,20
make camera 1
global screen_split=1
split_screen(0,1,screen_split)
color backdrop 0,0
color backdrop 1,0
dim player(1) as player_type
type player_type
object
endtype
for n=0 to 1
player(n).object=n+1
obj=player(n).object
make object box obj,1,1,1
position object obj,rnd(100),0.5,rnd(100)
yrotate object obj,rnd(359)
next n
do
ink rgb(0,255,0),0
if screen_split=1
box 0,screen height()/2-1,screen width(),screen height()/2+1
else
box screen width()/2-1,0,screen width()/2+1,screen height()
endif
for n=0 to 1
obj=player(N).object
set camera to follow n,object position x(obj),object position y(obj),object position z(obj),object angle y(obj),8,6,10,0
point camera n,object position x(obj),object position y(obj),object position z(obj)
next n
move object 2,(upkey()-downkey())*0.1
yrotate object 2,object angle y(2)+rightkey()-leftkey()
move object 1,(keystate(17)-keystate(31))*0.1
yrotate object 1,object angle y(1)+keystate(32)-keystate(30)
sync
loop
function split_screen(c1,c2,flag)
`if flag=0 then vertical split
`if flag=1 then horizontal split
if flag=0
set camera view c1,0,0,screen width()/2,screen height()
a#=(screen width()/2.0)/screen height()
set camera aspect c1,a#
set camera view c2,screen width()/2,0,screen width(),screen height()
set camera aspect c2,a#
endif
if flag=1
set camera view c1,0,0,screen width(),screen height()/2
a#=screen width()/(screen height()/2.0)
set camera aspect c1,a#
set camera view c2,0,screen height()/2,screen width(),screen height()
set camera aspect c2,a#
endif
endfunction
you should be able to use this...by looking at how it works...or maybe just copy and pasting the function...i don't know...i didn't make it
"We make the worst games in the universe."