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Atari ST GFA BASIC version. #2

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Atari ST GFA BASIC version. #2
mattlacey wants to merge 1 commit intoRetroBattlestations:masterfrom
mattlacey:master

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@mattlacey
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I've never used GFA before and couldn't find a way to do multiple statements line!

Added colour support where a number followed by "C" will increment or decrement the palette index by that amount, modulo 15 with 1 added to skip white.

@FozzTexx
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FozzTexx commented Jul 9, 2016

Why did you use the line drawing routine from the Commodore 64? Does GFA BASIC not have a way to draw a line?

@mattlacey
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Replied via email but doesn't look as thought it came through... I was working from one of the TRS versions; GFA does have a draw line routine but I'd not written a Bresenham implementation in years (decades) so did it for fun.

Thinking of replacing some of the drawing and other parts with assembly routines too.

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