Update Tween to include more parameters

[Magnogen]

ease (expects a fuction that returns a value, or a fuction that returns a function that returns a value)

• Specifies the type of easing to use, built in ease types include Tween.EASE_IN_SINE, Tween.EASE_OUT_CIRCULAR, or even Tween.EASE_IN_OUT_POWER
• In the case of Tween.EASE_..._POWER and Tween.EASE_..._EXPONENTIAL (or just Tween.EASE_..._EXP), you can specify a strength parameter as if it were a function; Tween.EASE_..._POWER(3) would be the same as Cubic Tweening, or you can use the strength parameter, it works exactly the same.

I plan on adding support for number of bounces in Tween.EASE_..._BOUNCE, as well as dampening for Tween.EASE_..._ELASTIC, but idk how to do that yet lol

[Magnogen]

Aight now the EASE_..._EXPONENTIAL(strength) works a lot nicer, here's a comparison:

It's very similar to EASE_..._POWER(strength), just slightly different

Comparison:

[TodePond]

This is looking really cool!

I'll have a closer look at it when I'm at my computer!

[Magnogen]

The main difference between EXP(strength) and POWER(strength) is that EXP forms a straight line when the strength is 0, whereas POWER forms a straight line at 1 - as shown (green is EXPONENTIAL, blue is POWER)

[TodePond]

Still haven't forgotten about this! Hopefully I can merge today or tomorrow!