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p1pkin / demul

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Control issues in the Sonic Adventure 1 and 2 #392

Open Redyn opened 8 years ago

Redyn commented 8 years ago

When you move your character forward or backward, the game behaves as if the stick is slightly tilted to the side. This destroys the player's attempts at precise movement, and causes Sonic to push against walls when running in narrow paths. More than once it even broke the automatized paths in SA1, as the game behaved as if I was pushing slightly to the left when that part of the level expected me to go directly forward, causing me to run off the path and into the abyss.

While unrelated to Demul, NullDC also has this problem when I use the keyboard, but it disappears when I select an alternate controller plugin that uses Xinput and play the game with my 360 controller. Unfortunately, the problem is present in Demul all the time, whether I use the keyboard or the controller. Perhaps the implementation of an alternate input plugin that uses solely Xinput would solve it?

RinMaru commented 8 years ago

yea this happened a lot in nulldc it would work then go crazy character would drift in a direction or stop and go on occasion

p1pkin commented 8 years ago

I suppose I have to do Xinput deadzone handling an option, because Sonic games require analog 'noice' to function correctly.

can anyone test Sonic games with DInput controllers (and it's default DeadZone 0) ? currently I havent any Xinput or DInput gamepads, so unable to test by myself

RinMaru commented 8 years ago

in nulldc dinput is an issue aswell i have both d/xinput controllers.

p1pkin commented 8 years ago

which exactly Nulldc input plugin was used ? there is 2 of them - standard one, which have deadzone handling and potentially can have such issues as well, and one more - "PuruPuru" which does not have dead zone.

mentioned above related to "Sonic goes slightly to the left" issue only! I've heard there also odd NullDC behavior like Sonic stuck somewhere, or falling down, or other similar kind of madness - that's very different issue, (FPU related) and as far as I know its not happen in modern Demul versions.

RinMaru commented 8 years ago

ive used both and they both have the issue. no other games afaik suffer.

Redyn commented 8 years ago

I just tried Controller [Xinput] and PuruPuru and neither presents the issue with my 360 controller. However, only PuruPuru lets you change the deadzone, and the lowest value is 1%. When I set it to 1%, it still works correctly, with the exception that Sonic keeps moving slightly when I let go of the stick, though that's most likely due to my stick's wear out.

Catarax commented 7 years ago

I think Demul should have the deadzone parameter set to 15% by default.

RinMaru commented 7 years ago

Gives me the same issue i finally have a new gaming computer and demul runs beautifully but sonic will drift to the left even with 15% deadzone

p1pkin commented 7 years ago

if you use DInput controller - you have to disable deadzone, ie set it to 0. in the case of XInput there is no solution at the moment. possible next Demul version will have option to disable XInput default deadzone.

the magic is - this game require slight erratic fluctuation of stick analog X/Y coordinates, otherwise Sonic will go not straight but slightly to left side. so in case of this game - implemented/enabled deadzone is cause of issue.

RinMaru commented 7 years ago

sounds good. Again I love this emulator its the only one that plays my games lol