SetScissor() is what you want
// Project: scissor
// Created: 2019-09-02
// show all errors
SetErrorMode(2)
// set window properties
SetWindowTitle( "scissor" )
SetWindowSize( 1024, 768, 0 )
SetWindowAllowResize( 1 ) // allow the user to resize the window
// set display properties
SetVirtualResolution( 1024, 768 ) // doesn't have to match the window
SetOrientationAllowed( 1, 1, 1, 1 ) // allow both portrait and landscape on mobile devices
SetSyncRate( 30, 0 ) // 30fps instead of 60 to save battery
SetScissor( 0,0,0,0 ) // use the maximum available screen space, no black borders
UseNewDefaultFonts( 1 ) // since version 2.0.22 we can use nicer default fonts
//create a couple of player sprites
sprite1 = createsprite(0)
setspritecolor(sprite1,255,0,0,255)
SetSpriteSize(sprite1,64,64)
sprite2 = createsprite(0)
setspritecolor(sprite2,0,255,0,255)
setspritesize(sprite2,64,64)
//set a random direction for sprite movement
angle1 as float
angle2 as float
angle1 = random(0,360)
angle2 = random(0,360)
dx1 as float
dy1 as float
dx2 as float
dy2 as float
dx1 = cos(angle1)*4
dy1 = sin(angle1)*4
dx2 = cos(angle2)*4
dy2 = sin(angle2)*4
//set a random starting position for the sprites
px1 as float
py1 as float
px2 as float
py2 as float
px1 = random(0,1024)
py1 = random(0,768)
SetSpritePosition(sprite1,px1,py1)
px2 = random(0,1024)
py2 = random(0,768)
SetSpritePosition(sprite2,px2,py2)
//lets fill the area with some random static sprites
for i = 1 to 20
sprite = createsprite(0)
setspritecolor(sprite,0,0,255,255)
setspritesize(sprite,random(32,128),random(32,128))
setspriteposition(sprite,random(0,1024),random(0,768))
next
do
//update the sprites positions
px1 = px1 + dx1
py1 = py1 + dy1
if px1 <= 0 or px1 >= 959 then dx1 = -dx1
if py1 <=0 or py1 >= 703 then dy1 = -dy1
SetSpritePosition(sprite1,px1,py1)
px2 = px2 + dx2
py2 = py2 + dy2
if px2 <= 0 or px2 >= 959 then dx2 = -dx2
if py2 <=0 or py2 >= 703 then dy2 = -dy2
SetSpritePosition(sprite2,px2,py2)
//set rendering to left half and view offset centered on sprite1
SetScissor(0,0,511,767)
SetViewOffset(Round(px1)-224,Round(py1)-352)
render()
//set rendering to right half and view offset centered on sprite2
SetScissor(512,0,1023,767)
SetViewOffset(round(px2)-736,round(py2)-352)
sync()
loop
