Re-evaluation of execution conditions can only be performed upon local events

[MobsyaBot]

Issue by stephanemagnenat
Friday Jul 28, 2017 at 08:14 GMT
Originally opened as aseba-community/thymio-vpl2#110

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In local states-8categorical branch add support for a categorical variable that can have one of 8 values, providing a simple form of state that is independent of the compiler-provided state support.

This feature works, but as currently re-evaluation of execution conditions are tight to the trigger of a local event, if a line has only this variable as event, it won't be triggered when this variable is changed.

For example, in the following program, the robot does not turn green when the forward button is pressed:

If we want to support such variable, then we should add the possibility to trigger re-evaluation of execution conditions from aesl code, rather than only upon local events.

[mbonani]

as first step it should make an error and not permit to have this 8 state event alone