feat: onStateEnter handler to access the obj

[benhuangbmj]

Is your feature request related to a problem? Please describe.

When I used the onStateEnter method to register a state handler, I frequently found myself need to access the object that triggers the state. I know I can pass the object itself as an argument to the enterState method, but I am wondering if there is an intrinsic method to access the object that I miss. If there is none, would that be a constructive feature to add?

Any more information?

No response

[mflerackers]

Usually a closure is used, like this

https://play.kaplayjs.com/?code=eJydUEEKwyAQvPuKxZPSEOg5pIdCX5BjyMFESaWiIRpKKfl7XZNA2kMLnYO46%2BzMOjcxGPFgvCDEOCHPSthUdM76AG0soQQhJasJRPhh1EExig%2BUZ6k3OM86ZYMaGV9bPghkaWkUzaDeLnScLG1WzjOdCJTnuxoRrtrnzlYodEnam0iklqcPNkKqdupz43qWZrWEA1DQHtJc%2FNOePPNfbrjqH2ZxzGrbf%2FGbyXI2GPNd6MCO7z6YbZ7yrJYYcZVInnnxAqzhbGQ%3D&version=4000.0.0-alpha.26

[benhuangbmj]

Usually a closure is used, like this

https://play.kaplayjs.com/?code=eJydUEEKwyAQvPuKxZPSEOg5pIdCX5BjyMFESaWiIRpKKfl7XZNA2kMLnYO46%2BzMOjcxGPFgvCDEOCHPSthUdM76AG0soQQhJasJRPhh1EExig%2BUZ6k3OM86ZYMaGV9bPghkaWkUzaDeLnScLG1WzjOdCJTnuxoRrtrnzlYodEnam0iklqcPNkKqdupz43qWZrWEA1DQHtJc%2FNOePPNfbrjqH2ZxzGrbf%2FGbyXI2GPNd6MCO7z6YbZ7yrJYYcZVInnnxAqzhbGQ%3D&version=4000.0.0-alpha.26

I see. So the approach here is to use a custom component? That's vey clever!

So there is no reason to build this feature into the out-of-box setting?

[mflerackers]

The only interesting additional feature would be to be able to build a state machine once, and only keep the state and a reference to the state machine. So the code wouldn't need to be duplicated each time.