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Programs with AI or Rules Enforcement Magic: The Gathering - Duels of the Planeswalkers Programming Talk
Programs with AI or Rules Enforcement Magic: The Gathering - Duels of the Planeswalkers Programming Talk
DotP2015: Overload is possible!
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DotP2015: Overload is possible!
by thefiremind » 06 Jul 2015, 00:15
It seems I haven't been careful enough when I tested the overload mechanic back when we were using the 3DM Chinese patch for our tests. It is possible to make it work, but it's clear that the developers didn't make a complete work (probably once they knew that no cards with overload would have been officially coded).
First of all, overload needs to be selected by zooming the card and clicking on the ability text. If you try to cast the spell normally, you aren't given any casting choice and you are asked to select a target. If there are no legal targets but you can afford the overload, you'll notice that the card glows red, and clicking on it auto-zooms it.
That's not all. Just granting the overload ability doesn't make overload work: the part where the spell affects all creatures you don't control needs to be coded manually, and of course, there could be more than one way to do it. The card needs to check whether it has been overloaded or not. You can't check if the target is nil, because the target could become nil after it has been chosen (for example it could have been removed from the battlefield in response). My idea involves setting a flag in LinkedDC, and since LinkedDC can't be used in UTILITY_ABILITY, my overload ability creates a delayed trigger which then sets the flag.
Here is my code for Electrickery:
There's a minor problem: the animation will run even when the spell has been overloaded. I tried to use the new AllowSFX(false) which is used on the official cards with extort, but it doesn't seem to work here (maybe it doesn't work for targetted animations?). If you aren't satisfied with it, you can use a global animation or no animation at all, the choice is yours.
On a different note, it's the first time I tried to use Invalidate() on a filter, and it seems to work exactly as one could guess. It's more elegant than setting an impossible condition (filtering schemes or similar).
If you come up with different (maybe shorter, maybe more functional) versions of overload, please share them.
First of all, overload needs to be selected by zooming the card and clicking on the ability text. If you try to cast the spell normally, you aren't given any casting choice and you are asked to select a target. If there are no legal targets but you can afford the overload, you'll notice that the card glows red, and clicking on it auto-zooms it.
That's not all. Just granting the overload ability doesn't make overload work: the part where the spell affects all creatures you don't control needs to be coded manually, and of course, there could be more than one way to do it. The card needs to check whether it has been overloaded or not. You can't check if the target is nil, because the target could become nil after it has been chosen (for example it could have been removed from the battlefield in response). My idea involves setting a flag in LinkedDC, and since LinkedDC can't be used in UTILITY_ABILITY, my overload ability creates a delayed trigger which then sets the flag.
Here is my code for Electrickery:
- Electrickery (tested) | Open
There's a minor problem: the animation will run even when the spell has been overloaded. I tried to use the new AllowSFX(false) which is used on the official cards with extort, but it doesn't seem to work here (maybe it doesn't work for targetted animations?). If you aren't satisfied with it, you can use a global animation or no animation at all, the choice is yours.
On a different note, it's the first time I tried to use Invalidate() on a filter, and it seems to work exactly as one could guess. It's more elegant than setting an impossible condition (filtering schemes or similar).
If you come up with different (maybe shorter, maybe more functional) versions of overload, please share them.
< Former DotP 2012/2013/2014 modder >
Currently busy with life...
Currently busy with life...
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thefiremind - Programmer
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Re: DotP2015: Overload is possible!
by cenarius » 10 Jul 2015, 08:33
Oh, this is nice. We'll see what cards can come out from this, though i admit i'm more like an "old school" magic fan.
But this is nice indeed, good job
But this is nice indeed, good job
- cenarius
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