openbor Tools

Reverse changes in 3587, because currently there's not a good way to change animation and frame in one step.

Minor, clean up spawn script load function a bit.

- Add vulnerable to entity property.
getentityproperty(ent, "vulnerable", anim, frame), the last two are optional.

- Fix bbox property return values, should be empty when the frame is not vulnerable and fail if parameter count doesn't match.

Fix nested call problem for script engine (when an interepreter calls a function like updateframe, in which case the animation script is reseted before complete).
This fix may cause bugs for old mods, so keep an eye on that to see if a backward compatible flag is required.

Reset gfx_x_offset, gfx_y_offset and gfx_y_offset_adj after a level.

Fix a mistake in player_check_special in previous update.

Change animation after setting velocities and other flags, change takeaction before animation, so modders can use custom settings in their animation scripts.

Allow pre anim @script tags. For those who want to write their own non-frame-based logic.

Use sortid instead of z to sort grab and bind. Leave platforms alone for now.

Removed unused variables in player_preinput.