Slow Downs
BlitzPlus Forums/BlitzPlus Programming/Slow Downs
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| I was making a pac-man like game, and was wondering why my game slows down drastically when I add more Apple images? My game code is below. Thanks: Graphics 900, 900 SetBuffer BackBuffer() EATUM = LoadImage ("Eatum.png") APPLE = LoadImage("Apple.png") ORBE = LoadImage("Orbe.png") DOOR = LoadImage("Door.png") Type EATUM Field x,y End Type Type APPLE Field x,y End Type Type ORBE Field x,y End Type Type DOOR Field x,y End Type e.EATUM = New EATUM e\x = 100 e\y = 200 For z = 1 To 5 a.Apple = New Apple a\x = 100+30*z a\y = 90*z Next o.ORBE = New ORBE o\x = 100 o\y = -200 d.DOOR = New DOOR d\x = 50 d\y = 50 While Not KeyDown (1) Cls DrawImage (EATUM,e\x,e\y) For a.APPLE = Each APPLE DrawImage(APPLE,a\x,a\y) If ImagesCollide(EATUM,e\x,e\y,0,APPLE,a\x,a\y,0) Then Delete a Next DrawImage (ORBE,o\x,o\y) If KeyDown(203) e\x = e\x - 3 If ImagesCollide(EATUM,e\x,e\y,0,ORBE,o\x,o\y,0) Then o\x = o\x - 3 EndIf If KeyDown(205) e\x = e\x + 3 If ImagesCollide(EATUM,e\x,e\y,0,ORBE,o\x,o\y,0) Then o\x = o\x + 3 EndIf If KeyDown(200) e\y = e\y - 3 If ImagesCollide(EATUM,e\x,e\y,0,ORBE,o\x,o\y,0) Then o\y = o\y - 3 EndIf If KeyDown(208) e\y = e\y + 3 If ImagesCollide(EATUM,e\x,e\y,0,ORBE,o\x,o\y,0) Then o\y = o\y + 3 EndIf DrawImage (DOOR,d\x,d\y) If ImagesCollide(DOOR,d\x,d\y,0,ORBE,o\x,o\y,0) Then Text 350,300, "Great Job" EndIf Flip Wend |
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| disclaimer: I haven't tried your code, only skimmed trough it fast. I'll cite a little bit from the manual for the command ImagesCollide: The ImagesOverlap command is MUCH faster, however, but can only determine if ANY of the two images have overlapped (this INCLUDES transparent pixels). This command is relatively slow, so you could try to optimize the code by only using this command on images where the command ImagesOverlap indicate an overlap in the first place. Besides if you use the forum codes for code or codebox, your code will look much better in posts :-) Code: [ code]code goes here[ /code] Code box: [ codebox]code goes here[ /codebox] (spaces in the brackets inserted to not trig the block). Edit: Now that I think of it I get pretty certain that this is already done internally in the command, so it's not certain my advice helps at all :/ |
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