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Learn Red ? Fundamentals of Red
book

Learn Red ? Fundamentals of Red

by Ivo Balbaert
May 2018
Beginner content levelBeginner
252 pages
6h 19m
English
Packt Publishing
Content preview from Learn Red ? Fundamentals of Red

Styles

If your app needs several instances of a face with the same properties and actors, for example, the tiles for a board game or the buttons of a calculator, you can define that as a style with a name and use that name instead. This is illustrated in the following tile game (in 10 lines!) from Nick Antoniacci:

;-- see Chapter09/tile.red:view [    title "Tile Game"    backdrop silver    style tl: button 100x100 [        temp: face/offset        face/offset: empty/offset         empty/offset: temp    ]     tl "8" tl "7" tl "6" return     tl "5" tl "4" tl "3" return     tl "2" tl "1" empty: base silver]

We defined a style tl for all eight buttons we need. Clicking on a tile button moves that button to the empty space, empty, by setting its offset to the offset of empty. Then

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Publisher Resources

ISBN: 9781789130706Supplemental Content