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for j = 0 to AlienKind[0].alien.length
		if Alienkind[0].spawntimer <= 0
			if GetSpriteExists(AlienKind[0].alien[j].id) = 0 and Alienkind[0].currentspawn < Alienkind[0].maxspawn 
				AlienKind[0].alien[j].id = CreateSprite (loadimage("AlienB/AlienBWalk/spritesheetb.png"))

SetErrorMode(2)

// set window properties
SetWindowTitle( "DeleteSprite" )
SetWindowSize( 640,360, 0 )
SetWindowAllowResize( 1 )

// set display properties
SetVirtualResolution( 640,360 )
SetOrientationAllowed( 1, 1, 1, 1 ) // portrait, portrait2, landscape, landscape2
SetSyncRate( 30, 0 )
SetScissor( 0,0,0,0 )
UseNewDefaultFonts( 1 )

CenterWindow()

GLOBAL ThisIMG
ThisIMG = CreateImageColor(255,0,0,255)

GLOBAL Last#, Sprites as Integer []
	AddSprite()

do
    Print("Click to Delete Sprite")
    
    If Last# + 1 <= Timer() and Sprites.Length < 10
		AddSprite()
		Last# = Timer()
	EndIf
	
    If GetPointerPressed() and Sprites.Length > -1
		ThisSPR = Random(0,Sprites.Length)
		DeleteSprite( Sprites[ThisSPR])
		Sprites.Remove(ThisSPR)
	EndIf
	
    Print(GetImageExists(ThisIMG))
    Sync()
loop

Function AddSprite()
	If Sprites.Length > -1
		ThisSPR = CloneSprite(Sprites[0])
	Else
		ThisSPR = CreateSprite(ThisIMG)
		SetSpriteSize(ThisSPR,64,64)
	EndIf
	Sprites.Insert(ThisSPR)
	SetSpritePositionByOffset(ThisSPR, Random(100,540), Random(100,260))
EndFunction

Function CenterWindow()
	X = GetMaxDeviceWidth()/2.0 - GetWindowWidth()/2.0
	Y = GetMaxDeviceHeight()/2.0 - GetWindowHeight()/2.0
	SetWindowPosition( X,Y)
EndFunction