Made the upgrade window more user friendly.

[Renari]

I made it so that users can add and remove upgrades while on the upgrade screen, changes are saved when the user clicks the submit button and then the changes are locked.

Screenshot:

Here are the submit images I used as well:

[EnderShadow]

I'd merge this, but I don't know if Vaendryl would want me to.

[Renari]

I don't see a reason why he would dislike it, the - button can only be used on upgrades you made while you were on the upgrade in that instance. Clicking return reverts all changes that were made unless you click submit.

[EnderShadow]

True. It can always be reverted if needed.

[vaendryl]

    idle "Menu/submit.jpg"
    hover "Menu/submit_hover.jpg"

Imma need these files too :)

EDIT: scratch that I need to learn how to read

[vaendryl]

I switched it around a little so that the - button appears to the right of the + button. that way you can keep clicking the same spot of you want to upgrade multiple times. I thought that was a little annoying. I also made it so that clicking 'submit' closes the screen. it seemed as though it wasn't doing anything.

apart from that, nice addition! good work, Renari :D

[Renari]

I also made it so that clicking 'submit' closes the screen. it seemed as though it wasn't doing anything.

Yeah I intended for it to do that although it was something I overlooked near the end. I noticed it later however.

[vaendryl]

As of 5.0 we'll be using a different R&D system again. sorry man.

[Renari]

Not a big deal I mostly did this because it bugged me when I was playing if, I see anything else that I think could be improved I'll be sure to have a go at implementing it myself.