Tile.walkable is read-only !?

ffourcad · Post by **ffourcad** » 02 Mar 2010, 13:21

While the doc says that the walkable property is read-write, I have a compiler error, when I try to change its value.
Is that a bug ?

Post by **Bax** » 02 Mar 2010, 17:30

The setter of that property can be accessed by OpenSpace internal classes only. The documentation generator still sees the setter, so it marks the property as read-write, but actually it isn't.
Tile walkability can't be changed at runtime.

ffourcad · Post by **ffourcad** » 03 Mar 2010, 08:45

Actually, I wanted to make a tile walkable, as soon as I have picked up the object on it. I want the tile to be unwalkable while an object is on it, and then become walkable as soon, as there is no more object. How can I achieve that ?

Post by **Bax** » 03 Mar 2010, 09:01

As the item you can remove from the map is a tile itself, if it is non-walkable but the tile below is walkable, when you remove it the avatar will be able to walk on that place.

ffourcad · Post by **ffourcad** » 03 Mar 2010, 09:25

When I said, remove the object, I meant make a removeChild on the Skin object. How can I remove a tile ?

Post by **Bax** » 03 Mar 2010, 10:31

If you remove a skin manually, then you can't make the tile walkable. Also it would be impossible to persist that map change: on map reload you will still have that skin in that tile.
To remove a tile you have to enter "edit mode" (supposed you are using OpenSpace 2).

ffourcad · Post by **ffourcad** » 03 Mar 2010, 14:22

The map is like a game level, so i don't want to permanently remove the object. It's just in the course of the game. It's weird, that I make the object disappear, and then, the avatar still make a "detour" to go to a tile on the other side.

Post by **Bax** » 03 Mar 2010, 14:31

Even if you could change the walkable property, nothing would change, as the OpenSpace extension should re-build the pathfinding nodes to make the avatar able to walk that tile.
I'm sorry but maybe OpenSpace has a different target than the game you are trying to make it fit.

laxersaz · Post by **laxersaz** » 04 Mar 2010, 08:57

Isn't there any way at all to alter anything on the map dynamically through api calls (not through manual changes during edit mode) and notify the OpenSpace extension about a map change? I think this is crucial for creating games of virtually any kind.

Post by **Bax** » 04 Mar 2010, 09:37

laxersaz wrote:Isn't there any way at all to alter anything on the map dynamically through api calls (not through manual changes during edit mode) and notify the OpenSpace extension about a map change? I think this is crucial for creating games of virtually any kind.

OpenSpace was not born to create any kind of game. The scope of this product has always been avatar chats. We are glad developers can find new ways of using it, but of course there are limitations.
Making realtime map changes as you are asking for is not trivial, due to user interaction concurrency problems, server-side performance in continuous pathfinder nodes rebuilding, etc. We will do our best to improve OpenSpace, but this specific request can't be satisfied in the near future.