Chess Game
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I'm working on a chess program which reads a chess pgn file and displays the moves in a timely fashion.
In the following code snippet, changing b to b=82 (w=82) moves white bishop onto black bishop OK - and
changing w to w=12 (b=12) moves black bishop onto white bishop - but white bishop still shows.
I can't see the obvious answer.clear() image = loadimage("Untied Games/Chess board", false) pieces = loadimage("Untied Games/Chess pieces", false) b=12 w=82 clear() drawImage( image, 0,0,2) drawImage( pieces, {0,0,80,130},{b,400,100/2,100/2}) drawImage( pieces, {80,0,80,130},{w,400,100/2,100/2}) update() sleep(122)Any help would be appreciated. Thanks
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@faz808 I have tidied that up for you!
Note: if you add ``` around your code it formats better
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It looks like you are drawing the black bishop and the white bishop on the same square. So whichever draw operation happens last will be the one that is on top (in this case the white one). I think that you will need to track which pieces haven't been captured and only draw those. One way to do this might be to convert the images into sprites and then just set the sprite.visible property to false for pieces that have been captured.
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@pianofire Thanks. I knew you'd have the answer. If I can get this part running the rest should be fairly straight forward.
A typical pgn file looks like this: d2-d4 d7-d5 (white-black) etc... I'm hoping that I just need to read the file, convert a1 to h8 board positions to screen coordinates, pick up the appropriate black or white sprite and move it to the new position. -
@faz808 said in Chess Game:
I'm working on a chess program which reads a chess pgn file and displays the moves in a timely fashion.
Just out of curiosity (and because I am also working on a chess program), how do you plan to create the pgn files in the first place? Will you perhaps have a "chess recorder" so you can make the moves and generate the file, or are you doing some sort of file editor thing?
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I'm not quite sure yet. But my idea is something like this...
'''loop to end of pgn file
BB$="a2-a4 c2-c4" // etc..
AA$=mid$(BB$,0,5)
L$=mid$(AA$,0,1)
N$=mid$(AA$,1,1)
LL$=mid$(AA$,3,1)
NN$=mid$(AA$,4,1)
y_from=9-((asc(N$))-48)
x_from=(asc(L$))-64
y_to=9-((asc(NN$))-48)
x_to=(asc(LL$))-64'''This should convert A4 etc to a x,y screen coordinate. Or a look up table A1$=22,22, A2$=32,22 etc.
Problem is lack of MID$,LEFT$,RIGHT$. -
Sorry I can't seem to get this format thing right.
BB$="a2-a4 c2-c4" // etc.. AA$=mid$(BB$,0,5) L$=mid$(AA$,0,1) N$=mid$(AA$,1,1) LL$=mid$(AA$,3,1) NN$=mid$(AA$,4,1) y_from=9-((asc(N$))-48) x_from=(asc(L$))-64 y_to=9-((asc(NN$))-48) x_to=(asc(LL$))-64Is that better?
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You need to put the ``` on a separate line (I have fixed it for you)
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Thanks pianofire
