sav fixes

room.lua

@@ -27,6 +27,10 @@ function Room:initialize(t)
 		print(t.name)
 
 		if t.player then
+			-- The carried colors are the sole source of truth for what's active.
+			-- Copies that live in this room (loaded from the sav) start INACTIVE —
+			-- you must walk onto one to merge it; it never joins you automatically.
+			self.activeColors = {red = false, green = false, blue = false}
 			-- entering from another room: place the carried colors at the entry point
 			for _, color in ipairs(t.player.activeColors) do
 				if self.player[color] then
@@ -97,6 +101,11 @@ function Room:initialize(t)
 	self.collidableMatrices = {} --{red = {{...}{...}{...}}, ...
 	self:createSwitchMatrix()
 	self:createCollideablesMatrix()
+
+	-- Resolve switches/doors up front so the very first frame renders correct
+	-- lock state: a block already sitting on a switch presses it before anything
+	-- is drawn, instead of waiting for the first move's tick.
+	self:resolveSwitchesAndDoors()
 end
 
 
@@ -414,11 +423,17 @@ function Room:tick()
 	end
 	self:createCollideablesMatrix()
 	self:createSwitchMatrix()
+	self:resolveSwitchesAndDoors()
+	self:nextRoomCheck()
+end
+
+-- Run the switch press check and push the result to every door. Assumes the
+-- collidable/switch matrices are already current.
+function Room:resolveSwitchesAndDoors()
 	local setDoorColors = self:switchCheck()
 	for _, door in pairs(self.doors) do
 		door:setColors(setDoorColors)
 	end
-	self:nextRoomCheck()
 end
 
 function Room:playerJoinCheck(previousPositions, newPositions)