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Re: Re: Re: Sprite animation with SDL_perl

by shotgunefx (Parson)
on May 05, 2002 at 17:58 UTC ( #164160=note: print w/replies, xml ) Need Help??

in reply to Re: Re: Sprite animation with SDL_perl
in thread Sprite animation with SDL_perl

How where they made in the old days?
  • Assembler
  • C
  • Look up tables for almost anything other than an addition or subtraction
  • Tweaked graphic modes so you code write to all 4 planes of a VGA card so you could write 4 pixels at a time for scaling and filling.
  • Everthing based on a a pow of 2.
  • Virtually all multiplications and divisions could then be bit-shifted instead of an actual multiplication.
  • If you needed more than int precision you used fixedpoint math.
  • 2D games usually used bit-masks so you could do cheap collision tests using bitwise operators.
  • Self modifying code to cut down on the codesize (usually less than 64K to work with)


"To be civilized is to deny one's nature."
  • Comment on Re: Re: Re: Sprite animation with SDL_perl

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