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Offline AngelFish

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Tilemap optimization
« on: February 06, 2011, 08:20:48 pm »
Can anyone make a faster tilemapping engine than this? It can display a full map in approximately a tenth of second.



The engine has to have a rudimentary object collection system, some sort of object display screen, complete collision detection, and full screen map display...

... in pure BASIC.
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Offline Binder News

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Re: Tilemap optimization
« Reply #1 on: February 06, 2011, 10:23:45 pm »
HOLY! How in the heck did you do that!?!?
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Offline Builderboy

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Re: Tilemap optimization
« Reply #2 on: February 06, 2011, 11:30:07 pm »
I imagine you are storing the string directly in your program, displaying it with output, and then using sub() for collision?
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Offline AngelFish

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Re: Tilemap optimization
« Reply #3 on: February 07, 2011, 12:31:35 pm »
Well, the string is stored externally and there's a lot of math surrounding that Sub( command, but close enough :P
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Ashbad

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Re: Tilemap optimization
« Reply #4 on: February 07, 2011, 12:34:44 pm »
that's actually what I got to.  I don't think you can really make it much faster than that, but there are ways to compress the strings (though I forget the method, and it's a bit slow)
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Offline DJ Omnimaga

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Re: Tilemap optimization
« Reply #5 on: February 07, 2011, 03:04:42 pm »
I think the only way to make it faster is to have the map stored in a string and a second copy in a pic (where solid tiles are all white), then do pxl-test collision detection. I think Builderboy did that in Trapped.
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Offline Builderboy

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Re: Tilemap optimization
« Reply #6 on: February 07, 2011, 03:54:01 pm »
Quote from: DJ Omnimaga on February 07, 2011, 03:04:42 pm
I think the only way to make it faster is to have the map stored in a string and a second copy in a pic (where solid tiles are all white), then do pxl-test collision detection. I think Builderboy did that in Trapped.

Almost right.  I had the strings stored in my program, and then instead of Output()ing them onto the homescreen, i Text()ed them onto the graph screen.  It took longer to display maps, but i was able to use pxl-test() for collision, which made movement faster
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Offline DJ Omnimaga

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Re: Tilemap optimization
« Reply #7 on: February 13, 2011, 02:58:42 pm »
Oh ok the pxl-test was directly on the displayed chars. I assume this must not work with many chars, right, though?
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Offline Builderboy

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Re: Tilemap optimization
« Reply #8 on: February 13, 2011, 02:59:44 pm »
Yeah, i was very limited to the characters I was able to use, since they all had to have the same pixel on
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Offline Munchor

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Re: Tilemap optimization
« Reply #9 on: February 13, 2011, 03:01:16 pm »
Quote from: Qwerty.55 on February 06, 2011, 08:20:48 pm
Can anyone make a faster tilemapping engine than this? It can display a full map in approximately a tenth of second.



The engine has to have a rudimentary object collection system, some sort of object display screen, complete collision detection, and full screen map display...

... in pure BASIC.

TI-Basic? It looks so fast! With Correlation it could be improved, but Pure Basic! It looks really fast ;D
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