Difference between revisions of "Globals"

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Globals (edit)

Revision as of 22:10, 5 June 2008

528 bytes added , 22:10, 5 June 2008

Remove from glossary

Anonymous user

imported>Wrye

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 *'''Variable Type:''' Short and Long are actually the same thing. Both are integer formats. Float is a real number format. Internally all types of global variables are stored as [[Variable_types:_floating_point|32-bit floats]]. The technical implementation of this variable-format causes inaccuracies at very high or low values. (e.g all numbers from 2000000000 to 2000000064 are stored as 2000000000)
-*'''Value:''' The default value for the global variable.
+*'''Value:''' The default value for the global variable. This affects the variable only when the plugin was just installed. After that the value is stored in the savegame.
-==Note==
-The value of a Global is stored in the save game. So you can not change the default value (by using the Globals form in the editor) of a an already existing Global in a plugin and expect it to change in a player's saved game unless you also script this with a "set myGlobal to whatever" line in a script. --[[User:Jduvall|Jduvall]] 13:39, 15 June 2006 (EDT)
+==Notes:==
+* In almost all cases, using a global variable is unnecessary. Variables defined in quest scripts are generally used instead, and accessed via '''questID.varName''', or '''getQuestVariable questID varName'''.
+* It seems that, when used in scripts, global variables always act as floats regardless of what you declare them as.  This could cause issues in situations such as:
+ set giCoinToss to GetRandomPercent / 50 ;giCoinToss is a global short
+ if( giCoinToss == 1 )
+     ;do result for heads
+ else
+     ;do result for tails
+ endif
+In the above situation, the only time the heads result code will run is when GetRandomPercent returns exactly 50.
+Variables declared in quest scripts will behave as declared and thus are safe to use in situations like the above.
 ==See also==