add commands for moving and checksumming records

lb_common.lua

@@ -1,3 +1,17 @@
+rawset(_G, "lb_score_t", function(map, name, skin, color, time, splits, flags, stat, checksum)
+	return {
+		["map"]    = map,
+		["name"]   = name,
+		["skin"]   = skin,
+		["color"]  = color,
+		["time"]   = time,
+		["splits"] = splits,
+		["flags"]  = flags,
+		["stat"] = stat,
+		["checksum"] = checksum
+	}
+end)
+
 rawset(_G, "lb_TicsToTime", function(tics, pure)
 	if tics == 0 and pure then
 		return "-:--:--"
@@ -64,3 +78,32 @@ rawset(_G, "lb_map_checksum", function(mapnum)
 	local digest = string.format("%04x", djb2(mh.lvlttl..mh.subttl..mh.zonttl))
 	return string.sub(digest, #digest - 3)
 end)
+
+rawset(_G, "lb_mapnum_from_extended", function(map)
+	local p, q = map:upper():match("MAP(%w)(%w)$", 1)
+	if not (p and q) then
+		return nil
+	end
+
+	local mapnum = 0
+	local A = string.byte("A")
+
+	if tonumber(p) != nil then
+		-- Non extended map numbers
+		if tonumber(q) == nil then
+			return nil
+		end
+		mapnum = tonumber(p) * 10 + tonumber(q)
+	else
+		--Extended map numbers
+		p = string.byte(p) - A
+		local qn = tonumber(q)
+		if qn == nil then
+			qn = string.byte(q) - A + 10
+		end
+
+		mapnum = 36 * p + qn + 100
+	end
+
+	return mapnum
+end)