[racket] More than one color with draw-text?

From: Will Robinson (quantum.penguin at gmail.com)
Date: Mon Dec 12 17:54:31 EST 2011

Thanks everyone for the suggestions.

Stephen, to answer your question, I want to be able to change the text
independently.  The letter d, for example, I might want to show sometimes
in white, red, or green.  I guess I could make a pic for each though.

On Mon, Dec 12, 2011 at 4:31 PM, Stephen Bloch <bloch at adelphi.edu> wrote:

> On Dec 12, 2011, at 10:53 AM, Will Robinson wrote:
> > Hello,
> >
> > I'm trying to do a simple Roguelike game as an exercise in learning the
> language, particularly racket/gui.  I'm using draw-text to place characters
> on the screen.  Ideally, I'd just call this once and put up huge string
> full of newlines to represent a block of text.  My problem is that I want
> to have control of the color of each character in this block of text.  It
> seems to me that the color controls for draw-text are applied to the entire
> block at once.  Should I just call draw-text for each character in the
> block, individually assigning color?  That seems to be very slow
> computationally, not to mention more work on the poor coder.
> Are characters and their colors orthogonal?  That is, can any character
> appear in any color, or does a particular character always appear in the
> same color?  If the latter, I would just create a bunch of images up front
> and place them at the desired (x,y) coordinates directly, rather than
> re-rendering the text every time.  That'll actually be faster.
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