Likely flaw in the entity kill flow

[awilsoncs]

I haven't found a way to produce an issue related to this flaw, but it follows from the analysis.

When an entity is killed, it should not be properly deleted until the end of the game update. This is to prevent the entities collection from being changed during iteration.

However, the game logic isn't aware that an entity has died or been disabled in some way. This can lead to a situation where the killed entity affects the game state after its death:

Entity A kills Entity B
Entity B (not properly removed) attacks Entity A during its turn

This should not be possible given a correct flow.