Added Effect: Snow Storm

Weather/WeatherTrueSnow.lua

@@ -0,0 +1,23 @@
+EffectInfo = { -- ScriptInfo for mod version < 2.0
+    Name = "Snow Storm",
+    EffectId = "weather_snowstorm", -- ScriptId for mod version < 2.0
+    TimedType = "Normal",
+    EffectGroup = "_group_weatherchange",
+    EffectCategory = "Shader"
+
+}
+
+function OnStart()
+    SET_TIMECYCLE_MODIFIER("prologue_ending_fog")
+end
+
+function OnStop()
+    SetSnowState(false)
+    ResetShader()
+    CLEAR_TIMECYCLE_MODIFIER()
+end
+
+function OnTick()
+    SetSnowState(true)
+    SET_WEATHER_TYPE_NOW("BLIZZARD")
+end