I want to use IronPython in a game of mine, but not as the primary
programming language (that's written in an amalgamation of C++, C++/CLI, and
C#), instead as programmable behavior to allow users to program units and
the AI.
In order to accomplish this I need to be able to suspend a script without
suspending the thread it resides in.
For Example, say there is a function move that orders an object to move
forward a certain amount of meters at default speed. There is also a turn
function that orders the object to turn a certain amount to the left.
I then get the following script from the user:
def main(self):
self.move(5)
self.turn(90)
if self.direction == Direction.East:
self.turn(180)
self.move(2)
Now, the script is going to need to be suspended while it's moving 5 meters
(it's not going to teleport) forward, then again while it's turning 90
degrees to the right, possibly again when it turns around, and finally once
again while moving forward 2 meters.
I can't block the script without suspending the thread/fiber, right? But
with a large number of scriptable units, the system will not be able to cope
with a thread/fiber per script.
In addition, I need to be able to save the stack, any dynamic memory being
used, and the instruction pointer, as well as the generated code. From what
I can tell, IronPython and Cpython both provide "black boxes" that cannot be
saved--IronPython providing dynamically generated managed code. I do not
know of any way that I can save the code and all data from such an
environment.
What options would I really have to accomplish this? Is there any way to
save/set the instruction pointer/stack frame through MSIL? Is there anything
in IronPython's engine that might let me do this? Or perhaps I should just
pull in IronPython's Parser and make my own compiler? Any other ideas?
Thanks for any help,
Erzengel des Lichtes
Hikari no Daitenshi
Archangel of Light
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