.DT state_change Discworld Creator help state_change Name .SI 5 /obj/handlers/state_change.c - Handler for specifying how one object changes into another .EI Description .SP 5 5 The state change handler is used to specify how one object changes into another. This can be used to handle "transformation" objects such as food grinders, stoves, etc., or just environmental effects, like freezing. .EP Functions .SI 5 mixed query_table() .EI .SP 10 5 This function returns the transformation table. It's mainly for debugging. .EP .SI 5 void create() .EI .SP 10 5 When the handler is loaded, it initializes the transformation table from the .dat files in /obj/state_change. See "Transformations" below, and obj.handlers.data. .EP .SI 5 object transform( object ob, string transformation ) .EI .SP 10 5 This function should be called to cause the object "ob" to be transformed by "transformation". The function returns the resulting object, or 0 if no entry for that object/transformation pair was found in the transformation table. Note that ob is not modified. It is up to the caller to dest it, if necessary. .EP .SP 10 5 The table is indexed by "<name>:<transformation>", where name is one of the following: the value of the property "state name"; the medium alias, if no "state name" property exists; or the object's short, if the object has no medium alias. .EP Transformations .SP 5 5 A transformation consists of the filename of the result object (string), a scale factor for the weights/amounts (float), and a list of function pointers to call on the result object (*func). The original object is passed as parameter $1, and the result is passed as $2. This allows characteristics from the original to be used in setting characteristics of the result. The transformations are loaded from any file in /obj/state_change that ends in .dat. The files are in the data handler format. See the help on obj.handlers.data for more information. .EP Files .SI 5 /obj/state_change/*.dat .EI See also .SI 5 obj.handlers.data .EI
