defsystem [_]

An effect will only be done (with tx/do!) if this function returns truthy. Required system for every effect, no default.

Call this on effect-context if the time of using the context is not the time when context was built.

defsystem [_]

Renders effect during active-skill state while active till done?. Default do nothing.

defsystem [_]

Used for NPC AI. Called only if applicable? is truthy. For example use for healing effect is only useful if hitpoints is < max. Default method returns true.