Timing Mechanism for Pausing/Unpausing game

[obscurelyme]

CoffeeMaker needs a way to pause/unpause the game. I think that the best way to do this will be to leverage timers. All game entities will use a game timer to progress their state. When the game is paused so too will the game entities.

[obscurelyme]

A global timer was used. It gets reset after each update step in the core game loop. Scenes will inject a deltaTime float into any Update method (which now accepts a floating point value).

[obscurelyme]

Another learning experience here is that SDL_USEREVENT. CoffeeMaker has some additional event loop implementation that looks to be a bit naive. I'd rather take advantage of SDL's event loop instead. SDL_USEREVENT gives CoffeeMaker that option.

So far with the working PR, I have 4 generic Game events.

• GAME_PAUSE
• GAME_UNPAUSE
• SCENE_LOAD
• SCENE_UNLOAD

These events, along side a PushCoffeeMakerEvent function means that the engine can theoretically push any event into SDL's loop that it will understand and take action on. When it comes time to introduce Audio (which may require multithreading) This will be the preferred solution as opposed to spinning up threads manually.

[obscurelyme]

Framerate Independent Game Loop

[obscurelyme]

Entities and Scenes have Pause/Unpause function to be invoked by game loop