logic_script
 Class hierarchy
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| CLogicScript |
logic_script is a point entity available in all 
Source games since 
Left 4 Dead 2. It is also available in 
Team Fortress 2 and 
Mapbase and it is the container for VScripts. In Left 4 Dead 2, for example, this entity is used extensively for the logic in "carnival games" found in the Dark Carnival campaign, such as Peanut Gallery, Strongman Contest, Whack-a-Stach, etc.
KeyValues
- Name
(targetname)<string> - The name that other entities refer to this entity by, via Inputs/Outputs or other keyvalues (e.g.
parentnameortarget).
Also displayed in Hammer's 2D views and Entity Report.See also: Generic Keyvalues, Inputs and Outputs available to all entities
- EntityGroup[0]
(Group00)to EntityGroup[15](Group15)<targetname> - All specified entity names will be searched for upon this entity spawning and their script handles are added to an array named
EntityGroupinlogic_script's script scope.EntityGroup[0]contains handle of entity with name specified in EntityGroup[0] property etc. If multiple entities with the given named exists, handle of first found will be used. - Table
MyEntityGroupis also created which contains the handles with keys being the names. (for some reason there is alsoMyEntityGroupArraywhich is same asEntityGroup)
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The following vscript is run in logic_script scope when it spawns. EntityGroup <- [];
MyEntityGroup <- {};
MyEntityGroupArray <- EntityGroup;
function __AppendToScriptGroup( name )
{
if ( name.len() == 0 )
{
EntityGroup.append( null );
}
else
{
local ent = Entities.FindByName( null, name );
EntityGroup.append( ent );
if ( ent != null )
{
ent.ValidateScriptScope();
MyEntityGroup[name] <- ent;
ent.GetScriptScope().EntityGroup <- EntityGroup;
}
}
}
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Note:For other vscript keyvalues notable for this entity like vscripts, thinkfunction and inputs like RunScriptCode, CallScriptFunction see Generic Keyvalues, Inputs and Outputs See also
External links
- It's the vscripting documentation FAQ! (Steam Forums)
- Scripting for Left 4 Dead 2 (Leeland.net) - Example uses of logic_script
