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lua/autorun/properties/gravity.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/
+--]]
+
+
+AddCSLuaFile()
+
+-- The following is for the server's eyes only
+local GravityDuplicator
+if ( SERVER ) then
+	function GravityDuplicator( ply, ent, data )
+
+		if ( !data || !data.enabled ) then
+
+			duplicator.ClearEntityModifier( ent, "gravity_property" )
+			return
+
+		end
+
+		-- Simply restore the value whenever we are duplicated
+		-- We don't need to reapply EnableGravity because duplicator already does it for us
+		ent:SetNWBool( "gravity_disabled", data.enabled )
+
+		duplicator.StoreEntityModifier( ent, "gravity_property", data )
+
+	end
+	duplicator.RegisterEntityModifier( "gravity_property", GravityDuplicator )
+end
+
+properties.Add( "gravity", {
+	MenuLabel = "#gravity",
+	Type = "toggle",
+	Order = 1001,
+
+	Filter = function( self, ent, ply )
+
+		if ( !IsValid( ent ) ) then return false end
+		if ( !gamemode.Call( "CanProperty", ply, "gravity", ent ) ) then return false end
+
+		if ( ent:GetClass() == "prop_physics" ) then return true end
+		if ( ent:GetClass() == "prop_ragdoll" ) then return true end
+
+		return false
+
+	end,
+
+	Checked = function( self, ent, ply )
+
+		return ent:GetNWBool( "gravity_disabled" ) == false
+
+	end,
+
+	Action = function( self, ent )
+
+		self:MsgStart()
+			net.WriteEntity( ent )
+		self:MsgEnd()
+
+	end,
+
+	Receive = function( self, length, ply )
+
+		local ent = net.ReadEntity()
+		if ( !properties.CanBeTargeted( ent, ply ) ) then return end
+		if ( !self:Filter( ent, ply ) ) then return end
+
+		local bones = ent:GetPhysicsObjectCount()
+		local b = ent:GetNWBool( "gravity_disabled" )
+
+		for i = 0, bones - 1 do
+
+			local phys = ent:GetPhysicsObjectNum( i )
+			if ( IsValid( phys ) ) then
+				phys:EnableGravity( b )
+				phys:Wake()
+			end
+
+		end
+
+		ent:SetNWBool( "gravity_disabled", b == false )
+
+		GravityDuplicator( ply, ent, { enabled = ent:GetNWBool( "gravity_disabled" ) } )
+
+	end
+
+} )