This trigger fires when a character selects to cast a spell. It fires multiple times during the different stages of a spell being cast.
The following object references are explicitly available for this trigger:
|ARGO||The source of the spell. Could be the item used to cast the spell (e.g. a wand or scroll) or the character casting the spell.|
|I||The character casting the spell.|
|SRC||The character casting the spell.|
The following arguments are set for this trigger. If an argument is marked as "In" then a value will be passed in to the trigger, if an argument is marked as "Out" then it can be set to a value to affect Sphere's behaviour:
|ARGN1||IO||The spell being cast.|
|ARGN2||IO||The amount of mana needed to cast the spell.|
|ARGN3||I|| Flags representing what stage of the casting process the trigger is being used at.
The following return values are explicitly defined for this trigger:
|1||Prevents the spell from being cast.|
|6||Allows the spell to be cast.|