Blue blocks
Blitz3D Forums/Blitz3D Beginners Area/Blue blocks
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| Hello. My program fills rectangle with blue blocks. The area is 15 x 30 = 450 in blocks. I'm trying to make a delay after the rectangle is finished. Everyting works fine, until I add Delay-command to make a delay (see the code, Delay 4000). What happens is that delay seems to take place when blocks-value is 450 (waiting for 451) while at the same time the rectangle misses one block. After a delay also the last block appears -- what should happen is that delay should takes place _after_ the last block. In short: Programs stops at 450 (waiting for 451) --> delay = 4000 --> one block missing --> delay --> "Ok." (see code) --> delay --> the last block appears. ; Sorry, no comments. The code is from 2007. I'm not sure my self how things works here... :-) Graphics 1024,768,32,1 Const blockSize = 12 Const BankWidth = 15 Const BankHeight = 30 Global gfxPoolInside = CreateImage(BankWidth*blockSize,BankHeight*blockSize) Global gfxActionBuffer = CreateImage(BankWidth*blockSize,BankHeight*blockSize) Global poolBankBlocks Global poolBankUE Global poolBank Global stateEffect_fadeIn Global timerUE Global arpa Global counter Global timerUE_fadeIn Global blocks = 0 Global frameTimer frameTimer = MilliSecs() poolBankUE = CreateBank(BankWidth * BankHeight) Type poolBankBlock Field x,y Field block End Type SetBuffer BackBuffer() blocks = 0 Gosub initEffectUE_fadeIn stateEffect_fadeIn = True .main While Not KeyHit(1) Gosub updateScreen Flip Wend End .updateScreen SetBuffer BackBuffer() Cls DrawImage gfxPoolInside,0,0 Color 0,0,255 If stateEffect_fadeIn = True And MilliSecs() - timerUE_fadeIn > 15 Then Gosub handleEffectUE_fadeIn blocks = blocks + 1 EndIf SetBuffer BackBuffer() Color 255,255,255 Text 300,0,blocks If blocks = 451 Then Color 255,255,255 Text 500,0,"OK." Delay 4000 EndIf Return .initEffectUE_fadeIn For pb.poolBankBlock = Each poolBankBlock Delete pb Next poolBankBlocks = 0 For y = 0 To BankHeight-1 For x = 0 To BankWidth-1 If PeekByte(poolBankUE, x + y * BankWidth) = 0 Then pb.poolBankBlock = New poolBankBlock pb\x = x pb\y = y poolBankBlocks = poolBankBlocks + 1 EndIf Next Next timerUE_fadeIn = MilliSecs() Return .initEffectUE_fadeIn_forNextRound counter = 0 arpa = Rand(0,poolBankBlocks - 1) For pb.poolBankBlock = Each poolBankBlock If counter = arpa Then PokeByte poolBankUE, pb\x + pb\y * BankWidth, 1 Delete pb poolBankBlocks = poolBankBlocks - 1 EndIf counter = counter + 1 Next If counter = 0 Then stateEffect_fadeIn = False timerUE_fadeIn = MilliSecs() Return .DrawBlck For y = 0 To BankHeight-1 For x = 0 To BankWidth-1 tempvalue = PeekByte(poolBankUE, x + y * BankWidth) If tempvalue = 1 Then Color 0,0,255 Rect x*blockSize,y*blockSize,blockSize,blockSize,1 End If Next Next Return .handleEffectUE_fadeIN SetBuffer ImageBuffer(gfxActionBuffer) Cls Gosub DrawBlck GrabImage gfxPoolInside,0,0 Gosub initEffectUE_fadeIn_forNextRound Return |
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| It is just a guess: have you called Flip before using Delay? Else, the screen is not updated. |
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| Flip and Delay are called ok. |
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If blocks = 451 Then Color 255,255,255 Text 500,0,"OK." Delay 4000 EndIf But then why is there no 'Flip' in this part of the code? The message will not show. Anyway, it would be a good idea to reorganise the code first, so that you have a clear idea what is going on at which place. That would make it easier to solve the problem and expand this code later on. |
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| I tried Flip there, didn't help. The code can be copy-pasted to Blitz. The last block appears after delay. |
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I got the last block done with this code:If blocks = 451 Then ... ... GrabImage gfxPoolInside,0,0 SetBuffer BackBuffer() DrawImage gfxPoolInside,0,0 Flip Delay 5000 |
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| Might I suggest, that unless at any point you are drawing to another buffer, that you place SetBuffer right under the Graphics command instead of within your subroutine? Essentially when using the BackBuffer, all the drawing commands are drawn 'invisibly' onto the back buffer, and will stay there until the flip command swaps the visible screen display (front buffer) for the drawn-on back buffer. Each time you flip the buffers in this way, the backbuffer is cleared, so all the drawing needs to be re-done. When you want a delayed appearance of something drawn to the screen, you can opt for using Delay and redrawing the entire screen again then adding the delayed-appearance-block, which works, but would prevent any other activity for that duraton.... OR You can repeatedly update the screen (which includes re-drawing all blocks) with a check against the time (Millisecss()) passed since the scene was beghun. If this time passed is longer than whatever duration, then add in the last block. Currently, your code is something of a combination of the two, which is why it wasn't working too well. Using just one method or the other would be a lot 'better' :) |
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