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Delta Values

A Delta value is the previous frame's value. Note: when you use Delta it is implicit that you are referring to an address and not a value.

Examples of how it can be used:

  • Detect if the level has been increased: mem level > delta level. It means "current level is greater than the previous frame's level".
  • Detect damage: mem health < delta health. It means "current health is smaller than the previous frame's health". Or you can just make the previous frame's value a requirement. delta health = 1 means "the previous frame's value for health must be 1 when the achievement pops up."

In the Real Examples section there are some good examples:

Changelog

Released under the GPL-3 License. There are no copyright-protected ROMs available for download on RetroAchievements.