two crystal sizes, add slight glow to cave moss, add columns to layer 1

features/glow_crystals.lua

@@ -35,7 +35,7 @@ minetest.register_node("dfcaverns:glow_ruby_ore", {
 minetest.register_node("dfcaverns:big_crystal", {
 	description = S("Giant Crystal"),
 	drawtype = "mesh",
-	mesh = "hex_crystal.obj",
+	mesh = "hex_crystal_big.obj",
 	tiles = {
 		"dfcaverns_glow_ruby4x.png",
 		"dfcaverns_glow_ruby.png",
@@ -58,11 +58,37 @@ minetest.register_node("dfcaverns:big_crystal", {
 	},
 })
 
+minetest.register_node("dfcaverns:med_crystal", {
+	description = S("Big Crystal"),
+	drawtype = "mesh",
+	mesh = "hex_crystal_med.obj",
+	tiles = {
+		"dfcaverns_glow_ruby.png",
+		"dfcaverns_glow_ruby_quarter.png",
+	},
+	use_texture_alpha = true,
+	paramtype = "light",
+	paramtype2 = "facedir",
+	sunlight_propagates = true,
+	walkable = false,
+	light_source = 12,
+	groups = {cracky=2, dfcaverns_big_crystal = 1},
+	sounds = default.node_sound_glass_defaults(),
+	selection_box = {
+		type = "fixed",
+		fixed = {-0.25, -0.5, -0.25, 0.25, 1.25, 0.25},
+	},
+	collision_box = {
+		type = "fixed",
+		fixed = {-0.25, -0.5, -0.25, 0.25, 1.25, 0.25},
+	},
+})
+
 
 minetest.register_node("dfcaverns:big_crystal_30", {
 	description = S("Giant Crystal"),
 	drawtype = "mesh",
-	mesh = "hex_crystal_30.obj",
+	mesh = "hex_crystal_30_big.obj",
 	tiles = {
 		"dfcaverns_glow_ruby4x.png",
 		"dfcaverns_glow_ruby.png",
@@ -82,7 +108,7 @@ minetest.register_node("dfcaverns:big_crystal_30", {
 			{-0.5, -0.5, -0.625, 0.5, 0.5, 0.375},
 			{-0.5, 0.5, -1.25, 0.5, 1.5, -0.25},
 			{-0.5, 1.5, -1.875, 0.5, 2.5, -0.875},
-		}
+		},
 	},
 	collision_box = {
 		type = "fixed",
@@ -90,14 +116,49 @@ minetest.register_node("dfcaverns:big_crystal_30", {
 			{-0.5, -0.5, -0.625, 0.5, 0.5, 0.375},
 			{-0.5, 0.5, -1.25, 0.5, 1.5, -0.25},
 			{-0.5, 1.5, -1.875, 0.5, 2.5, -0.875},
+		},
+	},
+})
+
+minetest.register_node("dfcaverns:med_crystal_30", {
+	description = S("Big Crystal"),
+	drawtype = "mesh",
+	mesh = "hex_crystal_30_med.obj",
+	tiles = {
+		"dfcaverns_glow_ruby.png",
+		"dfcaverns_glow_ruby_quarter.png",
+	},
+	use_texture_alpha = true,
+	paramtype = "light",
+	paramtype2 = "facedir",
+	sunlight_propagates = true,
+	walkable = false,
+	light_source = 12,
+	drop = "dfcaverns:med_crystal",
+	groups = {cracky=2, dfcaverns_big_crystal = 1},
+	sounds = default.node_sound_glass_defaults(),
+	selection_box = {
+		type = "fixed",
+		fixed = {
+			{-0.25, -0.5, -0.3125, 0.25, 0.0, 0.1875},
+			{-0.25, 0.0, -0.625, 0.25, 0.5, -0.125},
+			{-0.25, 0.5, -0.9375, 0.25, 1.0, -0.4375},
 		}
 	},
+	collision_box = {
+		type = "fixed",
+		fixed = {
+			{-0.25, -0.5, -0.3125, 0.25, 0.0, 0.1875},
+			{-0.25, 0.0, -0.625, 0.25, 0.5, -0.125},
+			{-0.25, 0.5, -0.9375, 0.25, 1.0, -0.4375},
+		},
+	},
 })
 
 minetest.register_node("dfcaverns:big_crystal_30_45", {
 	description = S("Giant Crystal"),
 	drawtype = "mesh",
-	mesh = "hex_crystal_30_45.obj",
+	mesh = "hex_crystal_30_45_big.obj",
 	tiles = {
 		"dfcaverns_glow_ruby4x.png",
 		"dfcaverns_glow_ruby.png",
@@ -117,7 +178,7 @@ minetest.register_node("dfcaverns:big_crystal_30_45", {
 			{-0.375, -0.5, -0.625, 0.625, 0.5, 0.375},
 			{0.0625, 0.5, -1.0625, 1.0625, 1.5, -0.0625},
 			{0.5, 1.5, -1.5, 1.5, 2.5, -0.5},
-		}
+		},
 	},
 	collision_box = {
 		type = "fixed",
@@ -125,25 +186,76 @@ minetest.register_node("dfcaverns:big_crystal_30_45", {
 			{-0.375, -0.5, -0.625, 0.625, 0.5, 0.375},
 			{0.0625, 0.5, -1.0625, 1.0625, 1.5, -0.0625},
 			{0.5, 1.5, -1.5, 1.5, 2.5, -0.5},
-		}
+		},
+	},
+})
+
+
+minetest.register_node("dfcaverns:med_crystal_30_45", {
+	description = S("Big Crystal"),
+	drawtype = "mesh",
+	mesh = "hex_crystal_30_45_med.obj",
+	tiles = {
+		"dfcaverns_glow_ruby4x.png",
+		"dfcaverns_glow_ruby.png",
+	},
+	use_texture_alpha = true,
+	paramtype = "light",
+	paramtype2 = "facedir",
+	sunlight_propagates = true,
+	walkable = false,
+	light_source = 12,
+	drop = "dfcaverns:med_crystal",
+	groups = {cracky=2, dfcaverns_big_crystal = 1},
+	sounds = default.node_sound_glass_defaults(),
+	selection_box = {
+		type = "fixed",
+		fixed = {
+			{-0.1875, -0.5, -0.3125, 0.3125, 0.0, 0.1875},
+			{0.03125, 0.0, -0.53125, 0.53125, 0.5, -0.03125},
+			{0.25, 0.5, -0.75, 0.75, 1.0, -0.25},
+		},
+	},
+	collision_box = {
+		type = "fixed",
+		fixed = {
+			{-0.1875, -0.5, -0.3125, 0.3125, 0.0, 0.1875},
+			{0.03125, 0.0, -0.53125, 0.53125, 0.5, -0.03125},
+			{0.25, 0.5, -0.75, 0.75, 1.0, -0.25},
+		},
 	},
 })
 
 local c_stone = minetest.get_content_id("default:stone")
 local c_air = minetest.get_content_id("air")
 local c_big_crystal = minetest.get_content_id("dfcaverns:big_crystal")
+local c_med_crystal = minetest.get_content_id("dfcaverns:med_crystal")
 local c_big_crystal_30 = minetest.get_content_id("dfcaverns:big_crystal_30")
+local c_med_crystal_30 = minetest.get_content_id("dfcaverns:med_crystal_30")
 local c_big_crystal_30_45 = minetest.get_content_id("dfcaverns:big_crystal_30_45")
+local c_med_crystal_30_45 = minetest.get_content_id("dfcaverns:med_crystal_30_45")
 local c_glow_ore = minetest.get_content_id("dfcaverns:glow_ruby_ore")
 
 local place_big_crystal = function(data, data_param2, i, ceiling)
 	orientation = math.random()
 	if orientation < 0.33 then
-		data[i] = c_big_crystal
+		if math.random() > 0.5 then
+			data[i] = c_big_crystal
+		else
+			data[i] = c_med_crystal
+		end
 	elseif orientation < 0.66 then
-		data[i] = c_big_crystal_30
+		if math.random() > 0.5 then
+			data[i] = c_big_crystal_30
+		else
+			data[i] = c_med_crystal_30
+		end
 	else
-		data[i] = c_big_crystal_30_45
+		if math.random() > 0.5 then
+			data[i] = c_big_crystal_30_45
+		else
+			data[i] = c_med_crystal_30_45
+		end
 	end
 	if ceiling then
 		data_param2[i] = math.random(20,23)

features/ground_cover.lua

@@ -16,6 +16,7 @@ minetest.register_node("dfcaverns:dirt_with_cave_moss", {
 			tileable_vertical = false}},
 	drop = "default:dirt",
 	is_ground_content = true,
+	light_source = 2,
 	groups = {crumbly = 3, soil = 1, light_sensitive_fungus = 11},
 	sounds = default.node_sound_dirt_defaults({
 		footstep = {name = "default_grass_footstep", gain = 0.25},