Re: A85: Re: Re: Re: Re: Raycasting
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Re: A85: Re: Re: Re: Re: Raycasting
I got all the equations working and everything, and technically it could
work, but I ran in to a big problem. Because of the limited math operations
you can do on TI-85, I could not get the exact grid number, only an
approximation. This approximation when rounded would be okay (it would be a
decimal, you need a whole number for the grid coord.) but even when I set it
to fix 0 (no decimals) it would give me an error when I entered it into the
matrix (where I stored the level data) because even it shows you 5, 5.3243
is still stored in that variable. I got frustrated with this and stooped
work on the project. If anybody can think of a way around this I'll put it
in and give it to them.
Steve Ranck
psufreak@mindless.com
-----Original Message-----
From: Mike Koss <mikekoss@freewwweb.com>
To: assembly-85@lists.ticalc.org <assembly-85@lists.ticalc.org>
Date: Friday, December 11, 1998 10:55 AM
Subject: Re: A85: Re: Re: Re: Re: Raycasting
>
>
>I know this was an OLD message, but Ive been under a rock(programming and
new
>job aquisition) for the last few months
>
>I was wondering if you would send me the source for your TI-Basic
ray-casting
>engine.... Im kinda interested in building a simple wire-frame, ray-caster.
Then
>work from their on how much I can push the system before fps drops below
>usability.
>
>Steve Ranck wrote:
>
>> Cool. I made a partially working raycasting engine in TI-Basic this
weekend.
>> It for some reason isn't drawing vertical walls right, but it does draw
>> horizontal walls correctly. It would kick @$$ in asm.
>> Steve Ranck
>> psufreak@mindless.com
>>
>> -----Original Message-----
>> From: David Whittaker <tubadave@sonet.net>
>> To: assembly-85@lists.ticalc.org <assembly-85@lists.ticalc.org>
>> Date: Tuesday, September 15, 1998 7:26 PM
>> Subject: A85: Re: Re: Re: Raycasting
>>
>> >
>> >Actually, I was thinking about making any 3-dimensional driver. I had
>> >originally thought I should use the old matrix multiplication method,
>> >because that seems to be the most optimal way, but if I find enough
other
>> >methods that will only raise my grade on the project. In other words,
>> >sure, I'd love to help as much as I can.
>> >
>> >Dave
>> >
>> >---------------------------------
>> >"DoN't caLL Me CraZy. OvEr 75% oF my PeRSonAliTies arE SANe."
>> >-my psychyatrist
>> >
>> >----------
>> >> From: Steve Ranck <psufreak@mindless.com>
>> >> To: assembly-85@lists.ticalc.org
>> >> Subject: A85: Re: Re: Raycasting
>> >> Date: Tuesday, September 15, 1998 12:56 PM
>> >>
>> >>
>> >> Does that mean you're interested in creating a wire frame raycasting
>> >engine
>> >> for the 85? Anyway here's the url for anybody interested:
>> >> http://www.ben2.ucla.edu/~permadi/raycast/raycidx.html
>> >>
>> >> If that link doesn't work, let me know, but it should. It is a very
good
>> >> site, and it discusses no implementation, all algorithms so it can be
>> >> applied to anything.
>> >> Steve
>> >> psufreak@mindless.com
>> >>
>