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Activities/Turtle Art/Under the hood (view source)
Revision as of 12:39, 19 May 2011
, 12:39, 19 May 2011→Modifying Turtle Art
help_string=_('turns the turtle 180 degrees'))
help_string=_('turns the turtle 180 degrees'))
Next, you need to define what your block will do: def_prim takes 3 arguments: the primitive name, the number of arguments—0 in this case—and the function to call—in this case, the canvas.seth function to set the heading.
Next, you need to define what your block will do. def_prim takes 3 arguments: the primitive name, the number of arguments—0 in this case—and the function to call—in this case, the canvas.seth function to set the heading.
self.tw.lc.def_prim('uturn', 0,
self.tw.lc.def_prim('uturn', 0,