Implement graphic memory serialization

[mikelcaz]

Assigned people

Developer: Reviewer:

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Description

In order to save/load a game state, is necessary to save/load the graphic memory. The API must be extended somehow to achieve that.

Note: This is a separate tasks from #38 because graphic memory serialization must be used for another tasks, such as taking snapshots of the screen in order to implement a nice game grid.

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Related work

Precedes:

• 38 (use the same semantics).

Can be useful with:

• Preview #
• Snapshots #

[mikelcaz]

Reworded and moved with all #38 stuff.