WorldElement/GameElement

[mrzzzrm]

To be discussed in meeting, feel free to leave opinions here.
Everything below is just opinion

The idea is that all Elements we have in a running game, object, polls, scripts, mission, bullets. Maybe even WorldLogic, ... Share the same baseclass: GameElement.
This class

• provides improved handle()s ([Handle] use internal invalidateOnDelete #518) of every type the element can by dynamic_cast'ed to. So you can do ship.handle< WorldObjec >() and ship.handle< Ship >, but ship.handle< Script > will fail
• is derived from Scriptable (if the WorldComponents do NOT have this as a baseclass)
• has a flag to request its removal
• has a reference to game

All instances are owned by the World, which:

• update()s all elements
• removes elements who request this. no remove* method will ever break an iterator

WorldComponents such as the WorldLogic or MissionSystem are just the interface to add Elements to the World and perform special operations.

to be continued