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EventAlert text

Grab magnet:

1st and 2nd time

"Grabbed" + (magnet location) + ", W A S D keys move in 4 directions. Press Space to release."

*See "Magnet Locations Used for Text Alerts" below

Grab magnet: 3rd and 4th time onward

"Grabbed" + (magnet location) + ", try 1 2 3 keys to slide different speeds left and right. Press Shift to stop slide. Press Space to release."

*See "Magnet Locations Used for Text Alerts" below

Grab magnet:

5th time onward

Any time after 2nd grab, and is directly left or right of a coil.

"Grabbed" + (magnet location) + ", try 1 2 3 keys to slide different speeds left and right. Press Shift to stop slide. Press Space to release."

*See "Magnet Locations Used for Text Alerts" below

Brightness peaks and falls offSee "Bulb Brightness and Voltmeter Text Alerts" below.
Voltage peaks and falls offSee "Bulb Brightness and Voltmeter Text Alerts" below.
Release magnet

"Released" + (magnet location).

*See "Magnet Locations Used for Text Alerts" below

Bump Coil"Bumped coil"
Bump Edge"At edge of play area."

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Aside: Regions 9, 10, and 11 are trickier to describe succinctly. Opted for a simpler description as this alert may not happen often, and subsequent alerts will provide clarification.

Example Interaction with Text

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Alerts

First and Second time grabbing magnet (WASD prompt on grab)

  • Pressed tab.
    • Focus moved to magnet
    • Screen reader would announce button label ("Grab magnet").
  • Press enter.
    • Text alert: "Grabbed (location), W A S D keys move in 4 directions, press Space to release."
  • 1 2 3, or cursor keys pressed
    • Sonification sounds are heard
    • Bump Coil ("Bumped coil") and Bump Edge ("At edge of play area") alerts fired if occurred.
    • Changes to PDOM descriptions occur as interaction proceeds.
  • Press space.
    • Text alert: "Released (Magnet Release Text Alertlocation)" according to the magnet location as depicted in diagram above.
    • Keyboard focus is on magnet button.
  • If Tab is pressed
    • Text alert: "Released (Magnet Release Text Alertlocation)" according to the magnet location as depicted in diagram above.
    • Keyboard focus moves to next focusable item.

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  • Pressed tab.
    • Focus moved to magnet
    • Screen reader would announce button label ("Grab magnet") and associated aria-describedby text ("Select this to move the magnet").
  • Press enter.
    • Text alert: "Grabbed (location), try 1 2 3 keys slide different speeds left and right. Press Space to release."
  • 1 2 3, or cursor keys pressed
    • Sonification sounds are heard
    • Bump Coil ("Bumped coil") and Bump Edge ("At edge of play area") alerts fired if occurred.
    • Changes to PDOM descriptions occur as interaction proceeds.
  • Press space.
    • Text alert: "Released (Magnet Release Text Alertlocation)" according to the magnet location as depicted in diagram above.
    • Keyboard focus is on magnet button.
  • If Tab is pressed
    • Text alert: "Released (Magnet Release Text Alertlocation)" according to the magnet location as depicted in diagram above.
    • Keyboard focus moves to next focusable item.

Sixth time grabbing magnet (Keyboard help prompt on grab)

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  • Text alert: "Grabbed (location), also see keyboard shortcuts under Sim Resources. Press Space to release."

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  • Sonification sounds are heard
  • Bump Coil ("Bumped coil") and Bump Edge ("At edge of play area") alerts fired if occurred.
  • Changes to PDOM descriptions occur as interaction proceeds.

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  • Text alert: "(Magnet Release Text Alert)" according to the magnet location as depicted in diagram above.
  • Keyboard focus is on magnet button.

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  • Text alert: "(Magnet Release Text Alert)" according to the magnet location as depicted in diagram above.
  • Keyboard focus moves to next focusable item.

Seventh time on-wards (Shortened grab alert)

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