Pointer: Difference between revisions

Latest revision as of 13:52, 30 April 2022

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Accessing Other Entities#Pointers

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-[[Category:Variables]][[Category:Glossary]]
+#redirect [[Accessing Other Entities#Pointers]]
-{{stub}}
-'''Pointers''' are special in C++. '''Pointers''' can be used to point to a [[variable]] instead of becoming a variable.  Here is an example: There are 5 [[integer]] [[variable]]s. Each one is named accordingly (anInteger1, anInteger2, ect).  However we have a [[function]] that uses whatever [[integer]] the user chooses.
-Enter '''pointer'''s.
-When running the program, the user makes his choice to pick whatever [[integer]] he wants.  When that happens, the '''pointer''' is pointed toward that [[integer]].  Finally, whenever the user is ready, he will continue to the next stage, where a [[function]] is run to return the value of the [[integer]] he has chosen.
-The function will automatically pick whatever [[integer]] we have the '''pointer''' aimed at.
-The main advantage to pointer is that they do not waste memory.  in the function, we are working with the actual integer variable, rather than a copy of it.  This has its disadvantages however.  If we will be editing the entered integer value, but do not wish to edit the original variable, pointers will not suffice.
-== Pointers in Scripting ==
-There are also pointers used in scripting.
-A few working pointers in the source engine:
-* !player - The local player
-* !player* - All players in a multiplayer game
-* !activator - What entity caused the current entity to run it's output. (ie, Player breaks crate, so !activator points to the player.)
-* !picker - The entity that the local player is looking at.
-* !self - Whenever an output runs, this is the entity the output is running from.
-== External Links ==
-[[Wikipedia:Pointer|Wikipedia information on pointers]]

Pointer: Difference between revisions

Latest revision as of 13:52, 30 April 2022

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