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39 lines
1.3 KiB
Objective-C
39 lines
1.3 KiB
Objective-C
//
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// GCControllerButtonInput.h
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// GameController
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//
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// Copyright (c) 2012 Apple Inc. All rights reserved.
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//
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#import "GameController.h"
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GAMECONTROLLER_EXPORT
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@interface GCControllerButtonInput : GCControllerElement
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/**
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Set this block if you want to be notified when the value on this button changes.
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@param button the element that has been modified.
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@param value the value the button was set to at the time the valueChangedHandler fired.
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@param pressed the pressed state of the button at the time the valueChangedHandler fired.
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*/
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typedef void (^GCControllerButtonValueChangedHandler)(GCControllerButtonInput *button, float value, BOOL pressed);
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@property (copy) GCControllerButtonValueChangedHandler valueChangedHandler;
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/**
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A normalized value for the input. Between 0 and 1 for button inputs. Values are saturated and thus never exceed the range of [0, 1].
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*/
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@property (readonly) float value;
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/**
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Buttons are mostly used in a digital sense, thus we have a recommended method for checking for pressed state instead of
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interpreting the value.
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As a general guideline a button is pressed if the value exceeds 25%. However there may be hysterisis applied
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to counter noisy input values, thus incidental values around the threshold value may not trigger a change
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in pressed state.
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*/
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@property (readonly, getter = isPressed) BOOL pressed;
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@end
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