Add hail effect and date functions

weathers/hail.lua

@@ -0,0 +1,38 @@
+local name = weather_mod.modname .. ":hail"
+
+local config = {}
+
+config.environment = {
+	spawn_puddles = true,
+	lightning = true,
+	damage = true
+}
+
+config.sound = {
+	name = "weather_hail",
+	gain = 1
+}
+
+config.particles = {
+	min_pos = {x=-9, y=7, z=-9},
+	max_pos = {x= 9, y=7, z= 9},
+	falling_speed=15,
+	amount=5,
+	exptime=0.8,
+	size=1,
+	textures = {}
+}
+
+for i = 1,5,1 do
+	config.particles.textures[i] = "weather_hail" .. i .. ".png"
+end
+
+config.conditions = {
+	min_height = weather_mod.settings.min_height,
+	max_height = weather_mod.settings.max_height,
+	max_heat				= 45,
+	min_humidity		= 65,
+	min_windspeed		= 2.5
+}
+
+weather_mod.register_effect(name, config)