perf(zones): assign inside count and index to local

Reduce number of times the inside table needs to be indexed or have length checked.
Also assign debug zones to table without having to be inside the zone.

imports/zones/client.lua

@@ -21,20 +21,23 @@ local function debug(self)
 end
 
 local inside = {}
+local insideCount
 local tick
 
 CreateThread(function()
 	while true do
-		local coords = GetEntityCoords(cache.ped)
 		Wait(300)
+		local coords = GetEntityCoords(cache.ped)
 		table.wipe(inside)
+		insideCount = 0
 
 		for _, zone in pairs(zones) do
 			local contains = zone.polygon:contains(coords, zone.thickness)
 
 			if contains then
 				if zone.inside then
-					inside[#inside + 1] = zone
+					insideCount += 1
+					inside[insideCount] = zone
 				end
 
 				if zone.onEnter and not zone.insideZone then
@@ -46,21 +49,29 @@ CreateThread(function()
 				if zone.onExit then
 					zone:onExit()
 				end
+			elseif zone.debug then
+				insideCount += 1
+				inside[insideCount] = zone
 			end
 		end
 
 		if not tick then
-			if #inside > 0 then
+			if insideCount > 0 then
 				tick = SetInterval(function()
-					for i = 1, #inside do
-						inside[i]:inside()
-						if inside[i].debug then
-							inside[i]:debug()
+					for i = 1, insideCount do
+						local zone = inside[i]
+
+						if zone.insideZone then
+							zone:inside()
+						end
+
+						if zone.debug then
+							zone:debug()
 						end
 					end
 				end)
 			end
-		elseif #inside == 0 then
+		elseif insideCount == 0 then
 			tick = ClearInterval(tick)
 		end
 	end