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lua/includes/extensions/ents.lua

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+--[[
+| This file was obtained through the combined efforts
+| of Madbluntz & Plymouth Antiquarian Society.
+|
+| Credits: lifestorm, Gregory Wayne Rossel JR.,
+| 	Maloy, DrPepper10 @ RIP, Atle!
+|
+| Visit for more: https://plymouth.thetwilightzone.ru/
+--]]
+
+
+function ents.FindByClassAndParent( classname, entity )
+
+	if ( !IsValid( entity ) ) then return end
+
+	local list = ents.FindByClass( classname )
+	if ( !list ) then return end
+
+	local out = {}
+	for k, v in ipairs( list ) do
+
+		if ( !IsValid(v) ) then continue end
+
+		local p = v:GetParent()
+		if ( !IsValid(p) ) then continue end
+		if ( p != entity ) then continue end
+
+		table.insert( out, v )
+
+	end
+
+	if ( #out == 0 ) then return end
+
+	return out
+
+end
+
+
+
+local inext = ipairs({})
+local EntityCache = nil
+
+function ents.Iterator()
+
+	if ( EntityCache == nil ) then EntityCache = ents.GetAll() end
+
+	return inext, EntityCache, 0
+
+end
+
+local function InvalidateEntityCache( ent )
+
+	EntityCache = nil
+
+end
+
+hook.Add( "OnEntityCreated", "ents.Iterator", InvalidateEntityCache )
+hook.Add( "EntityRemoved", "ents.Iterator", InvalidateEntityCache )