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en:keypressed [2016/05/12 20:14] admin |
en:keypressed [2020/02/28 10:46] (current) |
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==== Format ==== | ==== Format ==== | ||
- | **keypressed** ( // | + | **keypressed** ( [[expressions|expression]] |
- | return | + | return |
==== Description ==== | ==== Description ==== | ||
Line 11: | Line 11: | ||
The KeyPressed function returns a true or false value if a key is currently pressed, or returns the number of keys that are currently being pressed. | The KeyPressed function returns a true or false value if a key is currently pressed, or returns the number of keys that are currently being pressed. | ||
+ | See the [[Key|key]] function for a list of common key codes or see [[http:// | ||
==== Example ==== | ==== Example ==== | ||
< | < | ||
+ | ar_down=16777237 | ||
+ | ar_up=16777235 | ||
+ | ar_left=16777234 | ||
+ | ar_right=16777236 | ||
+ | |||
+ | fastgraphics | ||
+ | x = 150 | ||
+ | y = 150 | ||
+ | color blue | ||
+ | |||
+ | print "use arrows to move the ball, space to exit" | ||
+ | |||
+ | while not keypressed(32) | ||
+ | if keypressed(ar_down) then y = y + 1 | ||
+ | if keypressed(ar_up) then y = y - 1 | ||
+ | if keypressed(ar_right) then x = x + 1 | ||
+ | if keypressed(ar_left) then x = x - 1 | ||
+ | # keep x and y in bounds 0-300 | ||
+ | x = (x + 300) % 300 | ||
+ | y = (y + 300) % 300 | ||
+ | # draw ball | ||
+ | clg | ||
+ | | ||
+ | | ||
+ | end while | ||
</ | </ | ||