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	== Definition ==		== Definition ==
-	'''INT''' Signal ( <'''INT''' processID|processTypeID> , <'''INT''' signal> )	+	'''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]].	+	Allows a [[process]]/[[function]] or a range of processes/functions of certain [[processType]] to be controlled in a limited number of ways, by sending [[signals]].
	== Parameters ==		== Parameters ==
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	To obtain the processType of a function, the operator [[Type]] can be used.		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.		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 [[constants|signals]] which denote the signal which is to be sent.	+	The parameter signal is passed by way of a set of [[signals]] which denote the signal which is to be sent.
	== Example ==		== Example ==
	<pre>		<pre>
-	Signal( get_id(type enemy) , s_kill ); // Kills a process of type enemy	+	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( 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	+	signal( Type player , s_freeze ); // Freezes all processes of type player so that they are
	// still displayed, but do not execute any code.		// still displayed, but do not execute any code.
	</pre>		</pre>

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Revision as of 16:11, 1 March 2008

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

Definition

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

Allows a process/function or a range of processes/functions 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() •