Adapt to advanced category functionality

init.lua

@@ -4,4 +4,6 @@ local srcpath = modpath .. "/src"
 
 magic_rush = {}
 
-dofile(srcpath .. "/game.lua")
+if magic_stats then
+	dofile(srcpath .. "/stats.lua")
+end

src/game.lua

-if magic_stats then
-	magic_rush.stats = magic_stats.Game.register("magic_rush", "mlg", "MLG-Rush", {
-		klls = {display_name = "Kills"},
-		beds = {display_name = "Beds"},
-		deaths = {display_name = "Deaths"},
-	})
-end

src/stats.lua

+local function calc_kd(self, player)
+	local kills = self.game.categories.kills:get_stat(player)
+	local deaths = self.game.categories.deaths:get_stat(player)
+	return kills / deaths
+end
+
+local game = magic_stats.Game.register("magic_rush", "mlg", "MLG-Rush")
+local simple_categories = {
+	kills = "Kills",
+	deaths = "Deaths",
+	beds = "Beds",
+}
+for name, display_name in pairs(simple_categories) do
+	local category = magic_stats.Category.new(game, name, display_name)
+	game.categories[name] = category
+end
+
+local category_kd = magic_stats.Category.new(game, "kd", "K/D", calc_kd)
+game.categories["kd"] = category_kd
+
+magic_rush.stats = game