47 lines
1.6 KiB
Ruby
47 lines
1.6 KiB
Ruby
# A scene represents a discreet state of gameplay. Things like the main menu,
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# game over screen, and gameplay.
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#
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# Define a new scene by adding one to `app/scenes/` and defining a
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# `Scene.tick_SCENE_NAME` class method.
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#
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# The main `#tick` of the game handles delegating to the current scene based on
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# the `args.state.scene` value, which is a symbol of the current scene, ex:
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# `:gameplay`
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module Scene
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class << self
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# Change the current scene, and optionally reset the scene that's begin
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# changed to so any data is cleared out
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# ex:
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# Scene.switch(args, :gameplay)
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def switch(args, scene, reset: false, push_or_pop: false)
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# if we're here /not/ from push or pop, clear the scene stack
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args.state.scene_stack.clear unless push_or_pop
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if reset
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args.state.send(scene)&.current_option_i = nil
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args.state.send(scene)&.hold_delay = nil
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# you can also add custom reset logic as-needed for specific scenes
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# here
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end
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args.state.scene = scene
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raise FinishTick, 'finish tick early'
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end
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# Change the current scene and push the previous scene onto the stack
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def push(args, scene, reset: false)
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puts "Pushing #{scene}"
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args.state.scene_stack ||= []
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args.state.scene_stack.push(args.state.scene)
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switch(args, scene, reset: reset, push_or_pop: true)
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end
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# Return to the previous scene on the stack
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def pop(args, reset: false)
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scene = !args.state.scene_stack || args.state.scene_stack.empty? ? :back : args.state.scene_stack.pop
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switch(args, scene, reset: reset, push_or_pop: true)
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end
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end
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end
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