Whatdotcolor

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Also spelled whatdotcolour (Canadian spelling of colour), it is a Turing function which returns the colour of a specific pixel.  Often used for collision detection, it is an easy solution when creating something using Turing graphics alone without external images being involved.
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Also spelled whatdotcolour (Canadian spelling of colour), it is a [[Turing]] function which returns the colour of a specific pixel.  Often used for [[collision detection]], it is an easy solution when creating something using Turing graphics alone without external images being involved.
It's actually so important that there's a [[whatdotcolor Warrior]] mod.
It's actually so important that there's a [[whatdotcolor Warrior]] mod.
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Here's a quick example of a few basic graphics functions which uses whatdotcolour to check if the mouse is above a red circle.
Here's a quick example of a few basic graphics functions which uses whatdotcolour to check if the mouse is above a red circle.
<code>
<code>
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     %%Created By: Gandalf
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     %%Created By: [[Gandalf]]
     %%Example of whatdotcolour collision detection
     %%Example of whatdotcolour collision detection
     setscreen ("graphics,offscreenonly")
     setscreen ("graphics,offscreenonly")
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</code>
</code>
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An alternative of whatdotcolour collision detection in Turing is using Math.Distance.
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An alternative of whatdotcolour collision detection in Turing is using [[Math.Distance]].

Latest revision as of 23:51, 15 December 2005

Also spelled whatdotcolour (Canadian spelling of colour), it is a Turing function which returns the colour of a specific pixel. Often used for collision detection, it is an easy solution when creating something using Turing graphics alone without external images being involved.

It's actually so important that there's a whatdotcolor Warrior mod.

Here's a quick example of a few basic graphics functions which uses whatdotcolour to check if the mouse is above a red circle.

   %%Created By: Gandalf
   %%Example of whatdotcolour collision detection
   setscreen ("graphics,offscreenonly")
   var cx, cy, mx, my, mb : int
   cx := maxx div 2
   cy := maxy div 2
   var circleColour : int := red
   loop
       cls
       Draw.FillOval (cx, cy, 40, 40, circleColour)
       Mouse.Where (mx, my, mb)
       if whatdotcolour (mx, my) = circleColour and mb > 0 then
           cx := mx 
           cy := my
       end if
       View.Update
   end loop

An alternative of whatdotcolour collision detection in Turing is using Math.Distance.

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