How To Increment and/or Decrement A Numeric Room Property

Room module has an API to increment and/or decrement a numeric room property. This is useful when you have to update a numeric room property without race conditions.

// If the property called HP does not exist, it will create it
created := room.IncrProperty(roomID, "HP", 1000)

// Decrement the property called HP by -200
decremented := room.IncrProperty(roomID, "HP", -200)

// Increment the property called HP by 100
incremented := room.IncrProperty(roomID, "HP", 100)

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