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Revision as of 11:46, 25 December 2007

Contents 1 Definition 2 Parameters 3 Returns 4 Errors 5 Notes 6 Example

Definition

INT Signal ( <INT processID|processTypeID> , <INT signal> )

Allows a process or a range of processes of certain processType to be controlled in a limited number of ways, by sending signals.

Parameters

INT processID|processTypeID	- The ProcessID of the process or the ProcessTypeID of the type of processes to which the signal is to be sent.
INT signal	- The code of the signal that is to be sent to the target process.

Returns

INT :

false	- The specified processID|processTypeID was 0 or a processTypeID.
true	- The specified processID|processTypeID was a processID.

Errors

Invalid processID	- The process with specified processID is not alive. (Pre 0.90.2 only)
Invalid signal	- The specified signal is invalid.

Notes

To obtain the processType of a function, the operator Type can be used. For a process to send a signal to itself, the local variable id can be used. The parameter signal is passed by way of a set of signals which denote the signal which is to be sent.

Example

Signal( get_id(type enemy) , s_kill ); // Kills a process of type enemy
Signal( id , s_kill_tree );            // Kills the process that calls it, and all of its descendants
Signal( Type player , s_freeze );      // Freezes all processes of type player so that they are
                                       //     still displayed, but do not execute any code.

Processinteraction Functions

• Advance() • Collision() • Exists() • Get_angle() • Get_dist() • Get_id() • Let_me_alone() • Signal() • Xadvance() •