This library makes those things really easy. First, it provides the overlay() proc which is used to create overlays. The proc belongs to the atom, so you just call it for the mob you're adding an overlay to:
That'll add an overlay whose icon matches the mob's icon and has the "hat" icon state.
This proc creates the overlay, adds it to the mob's list of overlays, and more importantly it returns an Overlay object. This object is defined by the library and is how you can easily manipulate overlays. Just keep a reference to this object and you can do some handy things, for example:
Version HistoryVersion 7 (posted 06-09-2012)
- Fixed a glitch with maptext on image objects. Every time you set the image's maptext it clears its maptext_width and height, so I made the Overlay object remember the values you set.
- Added the Overlay.Move() proc which moves the overlay to a new atom.
- Got rid of the compile-time version checks to make the library work with pre-494 builds. If you don't have a version of BYOND that supports maptext, download it now!
- Added the RGB() proc to overlays. This proc sets an RGB value that's added to the overlay. The effects aren't cumulative. You can specify the args as a single string in the #RRGGBBAA form, or as three or four separate arguments (the separate RGBA components).
- Changed the atom's overlay() proc to add a completely blank overlay (whose icon is null) if no parameters are specified.
- Added the Overlay.MapText() proc as an alias of Text().
- Updated demo\demo.dm to make use of the Text() proc.
- Updated the maptext support to work with image-based overlays.
- Added the stat-bar-demo which shows how to create stat bars that use Overlay objects and manage how the overlay's icon_state is updated as values change.
- Added the Overlay.Text() and Overlay.TextBounds() procs, which are used to set an overlay's maptext and maptext_width/height values. BYOND v494 is necessary to use maptext, but it currently doesn't work well with overlays (the overlay also shows an icon, even if you don't specify one).
- Changed the atom.overlay() proc to support named arguments and added a layer parameter to it.
- Changed how layering works for flicked overlays. When the overlays are created on the same layer as the mob, there may be issues. I recommend that you always specify a different layer for them.
- Added support for pixel offsets for flicked overlays.
- Added support for overlays with exclusive viewers. This means you can create an overlay and control exactly who can see it. For example, you can create a health bar overlay and only make it visible to yourself so that other players can't see your health bar.
- Use the Overlay object's ShowTo() proc to add an exclusive viewer to an overlay. Use the HideFrom() proc to remove an exclusive viewer. If the overlay has no exclusive viewers, it is shown to all players (you can also use the ShowToAll() proc to show it to everyone).
- Added the "show-to-demo" which contains an example of how to create exclusive viewers. You won't be able to notice a difference unless you host the demo and connect another instance of Dream Seeker.
- Added the "flick-demo" which contains an example of creating and animating two overlays. They can be animated independently or at the same time.
- Fixed a bug where updating an overlay would cause it to become shown, even if you had called the overlay's Hide() proc.
- Initial post