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- using System;
- using UnityEngine.InputSystem.Layouts;
- using UnityEngine.InputSystem.LowLevel;
- using UnityEngine.InputSystem.Utilities;
- namespace UnityEngine.InputSystem.Controls
- {
- /// <summary>
- /// A button that reads its pressed state from <see cref="TouchControl.phase"/>.
- /// </summary>
- /// <remarks>
- /// This control is used by <see cref="TouchControl"/> to link <see cref="TouchControl.press"/>
- /// to <see cref="TouchControl.phase"/>. It will return 1 as long as the value of
- /// phase is <see cref="TouchPhase.Began"/>, <see cref="TouchPhase.Stationary"/>, or
- /// <see cref="TouchPhase.Moved"/>, i.e. as long as the touch is in progress. For
- /// all other phases, it will return 0.
- /// </remarks>
- /// <seealso cref="TouchControl"/>
- [InputControlLayout(hideInUI = true)]
- [Scripting.Preserve]
- public class TouchPressControl : ButtonControl
- {
- /// <inheritdoc />
- protected override void FinishSetup()
- {
- base.FinishSetup();
- if (!stateBlock.format.IsIntegerFormat())
- throw new NotSupportedException(
- $"Non-integer format '{stateBlock.format}' is not supported for TouchButtonControl '{this}'");
- }
- /// <inheritdoc />
- public override unsafe float ReadUnprocessedValueFromState(void* statePtr)
- {
- var valuePtr = (byte*)statePtr + (int)m_StateBlock.byteOffset;
- var intValue = MemoryHelpers.ReadIntFromMultipleBits(valuePtr, m_StateBlock.bitOffset, m_StateBlock.sizeInBits);
- var phaseValue = (TouchPhase)intValue;
- var value = 0.0f;
- if (phaseValue == TouchPhase.Began || phaseValue == TouchPhase.Stationary ||
- phaseValue == TouchPhase.Moved)
- value = 1;
- return Preprocess(value);
- }
- }
- }
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