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Add ability to auto-create Singleton

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Add an optional parameter that allows to auto-spawn
`Singleton` with `GetInstance()` call.
This commit is contained in:
Anton Tarasenko 2020-07-18 02:30:55 +07:00
parent 341c4aaf89
commit e3f3296c2d
1 changed files with 11 additions and 4 deletions
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15
sources/Core/Singleton.uc
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@ -32,11 +32,18 @@ var private Singleton activeInstance;
// Only a default value is ever used.
var protected bool blockSpawning;
public final static function Singleton GetInstance()
public final static function Singleton GetInstance(optional bool spawnIfMissing)
{
if (default.activeInstance != none && default.activeInstance.bPendingDelete)
return none;
return default.activeInstance;
local bool instanceExists;
instanceExists = default.activeInstance != none
&& !default.activeInstance.bPendingDelete;
if (instanceExists) {
return default.activeInstance;
}
if (spawnIfMissing) {
return class'Acedia'.static.GetInstance().Spawn(default.class);
}
return none;
}
public final static function bool IsSingletonCreationBlocked()