Which method is better?
Blitz3D Forums/Blitz3D Beginners Area/Which method is better?
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| Following on from Sterling's tip on freeing up images, I have this to ask. I adapted the bouncing ball code from 'Krylar's book and had 100 balls bouncing around the screen. These balls were all grabbed from a simple oval drawn at the beginning of the program. I decided I wanted 100 different coloured balls bouncing around the screen, so I did away with the grabimage and drew each one out in the main game loop. Now, my question is - which is better? Without grabbing the image, do I still need to free up graphic memory, or does it not apply here as I'm drawing each one out in turn? Here's the code: Graphics 1024,768,32,1 SetBuffer BackBuffer() SeedRnd MilliSecs() HidePointer MX =MouseX() MY =MouseY() Type blobz Field x Field y Field xx Field yy Field c1 Field c2 Field c3 End Type For f=0 To 100 b.blobz = New blobz b\x = Rnd(970) b\y = Rnd(730) b\xx = Int(Rnd(2)+1) b\yy = Int(Rnd(2)+1) b\c1 = Int(Rnd(1,255)) b\c2 = Int(Rnd(1,255)) b\c3 = Int(Rnd(1,255)) Next While KeyDown(1) = False Cls For b.blobz = Each blobz If b\x>980 Then b\xx=-Int(Rnd(2)+1) If b\x<0 Then b\xx=Int(Rnd(2)+1) If b\y>730 Then b\yy=-Int(Rnd(2)+1) If b\y<0 Then b\yy=Int(Rnd(2)+1) Color b\c1,b\c2,b\c3 Oval b\x,b\y,30,30 Color 255,255,255 Oval b\x+5,b\y+5,5,5 b\x=b\x+b\xx b\y=b\y+b\yy If mx<>MouseX() Then End If my<>MouseY() Then End Next Flip Wend End |
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| Actually........ do I need to free up my types when exiting the program? |
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| The code example above doesn't particularly use any graphics memory (apart from the standard buffers), because you don't load or create any images. So you don't need to free any images. Having said that, you will get faster code if you create a small number of images of the colors used (blue, red, green, orange etc) and then select them at random. Also, Blitz will clear up everything when it exits. You can simplify your code (and probably make it a little faster) by using Rand() in place of Int(Rnd()), as it equates to the same thing. |
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| > Rand() Well I never! God bless these forums. Thanks, Tobo. |
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