add giant mycelium to mapgen

df_caverns/primordial.lua

@@ -5,6 +5,7 @@ end
 local c_orb = minetest.get_content_id("df_primordial_items:glow_orb_hanging")
 local c_mycelial_dirt = minetest.get_content_id("df_primordial_items:dirt_with_mycelium")
 local c_dirt = minetest.get_content_id("default:dirt")
+local c_giant_mycelium = minetest.get_content_id("df_primordial_items:giant_hypha_apical_mapgen")
 
 -----------------------------------------------------------------------------------------
 
@@ -47,7 +48,9 @@ local mushroom_cavern_floor = function(abs_cracks, humidity, vi, area, data, dat
 	end
 
 	local rand = math.random() * math.min(abs_cracks, 1) * humidityfactor
-	if rand < 0.01 then
+	if rand < 0.001 then
+		data[vi+ystride] = c_giant_mycelium
+	elseif rand < 0.01 then
 		local schematic = df_primordial_items.get_primordial_mushroom()
 		local rotation = (math.random(1,4)-1)*90
 		mapgen_helper.place_schematic_on_data_if_it_fits(data, data_param2, area, area:position(vi+ystride), schematic, rotation)
@@ -65,7 +68,9 @@ local mushroom_cavern_ceiling = function(abs_cracks, humidity, vi, area, data, d
 		data[vi] = c_mycelial_dirt
 		if abs_cracks < 0.3 then
 			local rand = math.random() * humidityfactor
-			if rand < 0.03 then
+			if rand < 0.003 then
+				data[vi-ystride] = c_giant_mycelium
+			elseif rand < 0.03 then
 				df_primordial_items.spawn_ceiling_spire_vm(vi, area, data)
 			elseif rand < 0.2 then
 				data[vi-ystride] = c_orb
@@ -81,7 +86,10 @@ local mushroom_warren_ceiling = function(abs_cracks, vi, area, data, data_param2
 	if abs_cracks < 0.3 then
 		data[vi] = c_mycelial_dirt
 		if abs_cracks < 0.2 then
-			if math.random() < 0.2 then
+			local rand = math.random()
+			if rand < 0.003 then
+				data[vi-ystride] = c_giant_mycelium
+			elseif rand < 0.2 then
 				data[vi-ystride] = c_orb
 				data_param2[vi-ystride] = math.random(0,179)
 			end
@@ -97,7 +105,9 @@ local mushroom_warren_floor = function(abs_cracks, vi, area, data, data_param2)
 		data[vi] = c_dirt
 	end
 	local rand = math.random() * math.min(abs_cracks, 1)
-	if rand < 0.03 then
+	if rand < 0.001 then
+		data[vi+ystride] = c_giant_mycelium
+	elseif rand < 0.03 then
 		data[vi+ystride] = plants[math.random(1,5)]
 	end
 end

df_primordial_items/ceiling_fungus.lua

@@ -38,7 +38,7 @@ minetest.register_node("df_primordial_items:glow_orb_hanging", {
 	tiles = {"dfcaverns_mush_orb_vert.png"},
 	inventory_image = "dfcaverns_mush_orb_vert.png",
 	wield_image = "dfcaverns_mush_orb_vert.png",
-	groups = {snappy = 3, flora = 1, attached_node = 1, flammable = 1},
+	groups = {snappy = 3, flora = 1, flammable = 1},
 	paramtype = "light",
 	paramtype2 = "degrotate",
 	drawtype = "plantlike",

df_primordial_items/giant_mycelium.lua

@@ -2,9 +2,10 @@
 local MP = minetest.get_modpath(minetest.get_current_modname())
 local S, NS = dofile(MP.."/intllib.lua")
 
-local hub_thickness = 0.1875--0.25
+-- hub_thickness -- the bit in the middle that's seen at the ends and corners of long hypha runs
-local connector_thickness = 0.25--0.375
+-- connector_thickness
-local node_box = {
+local get_node_box = function(hub_thickness, connector_thickness)
+	return {
 		type = "connected",
 		fixed = {-hub_thickness,-hub_thickness,-hub_thickness,hub_thickness,hub_thickness,hub_thickness},
 		connect_top = {-connector_thickness, 0, -connector_thickness, connector_thickness, 0.5, connector_thickness},
@@ -14,18 +15,19 @@ local node_box = {
 		connect_front = {-connector_thickness, -connector_thickness, -0.5, connector_thickness, connector_thickness, 0},
 		connect_left = {-0.5, -connector_thickness, -connector_thickness, 0, connector_thickness, connector_thickness},
 		disconnected = {-connector_thickness,-connector_thickness,-connector_thickness,connector_thickness,connector_thickness,connector_thickness},
-}
+	}
+end
 
 
 minetest.register_node("df_primordial_items:giant_hypha_root", {
 	description = S("Giant Hypha"),
 	tiles = {
-		{name="dfcaverns_mush_stalk_side.png"},
+		{name="dfcaverns_mush_giant_hypha.png"},
 	},
     connects_to = {"group:soil", "group:hypha"},
     connect_sides = { "top", "bottom", "front", "left", "back", "right" },
 	drawtype = "nodebox",
-	node_box = node_box,
+	node_box = get_node_box(0.1875, 0.25),
 	paramtype = "light",
 	light_source = 2,
 	is_ground_content = false,
@@ -35,12 +37,12 @@ minetest.register_node("df_primordial_items:giant_hypha_root", {
 minetest.register_node("df_primordial_items:giant_hypha", {
 	description = S("Giant Hypha"),
 	tiles = {
-		{name="dfcaverns_mush_stalk_side.png"},
+		{name="dfcaverns_mush_giant_hypha.png"},
 	},
     connects_to = {"group:hypha"},
     connect_sides = { "top", "bottom", "front", "left", "back", "right" },
 	drawtype = "nodebox",
-	node_box = node_box,
+	node_box = get_node_box(0.1875, 0.25),
 	paramtype = "light",
 	light_source = 2,
 	is_ground_content = false,
@@ -48,13 +50,14 @@ minetest.register_node("df_primordial_items:giant_hypha", {
 	sounds = default.node_sound_wood_defaults(),
 })
 
-local grow_mycelium = function(pos)
+local find_mycelium_growth_targets = function(pos)
 	local nodes = {}
 	for x = -1, 1 do
 		nodes[x] = {}
 		for y = -1, 1 do
 			nodes[x][y] = {}
 			for z = -1, 1 do
+				if not (x == y and y == z) then -- we don't care about the diagonals or the center node
 					local node = minetest.get_node({x=pos.x+x, y=pos.y+y, z=pos.z+z})
 					local state = {}
 					if minetest.get_item_group(node.name, "soil") > 0 then
@@ -68,13 +71,13 @@ local grow_mycelium = function(pos)
 				end
 			end
 		end
+	end
 
 	--TODO there's probably some clever way to turn this into a subroutine, but I'm tired right now and
 	--copy and pasting is easy and nobody's going to decide whether to hire or fire me based on this
 	--particular snippet of code so what the hell. I'll fix it later when that clever way comes to me.
 	local valid_targets = {}
-	if nodes[-1][0][0].buildable then
+	if nodes[-1][0][0].buildable and
-		if 
 		-- test for soil to directly support new growth
 		(nodes[-1][-1][0].soil or
 		nodes[-1][1][0].soil or
@@ -93,9 +96,7 @@ local grow_mycelium = function(pos)
 	then
 		table.insert(valid_targets, {x=pos.x-1, y=pos.y, z=pos.z})
 	end
-	end
+	if nodes[1][0][0].buildable and
-	if nodes[1][0][0].buildable then
-		if 
 		-- test for soil to directly support new growth
 		(nodes[1][-1][0].soil or
 		nodes[1][1][0].soil or
@@ -114,9 +115,7 @@ local grow_mycelium = function(pos)
 	then
 		table.insert(valid_targets, {x=pos.x+1, y=pos.y, z=pos.z})
 	end
-	end
+	if nodes[0][-1][0].buildable and
-	if nodes[0][-1][0].buildable then
-			if 
 		-- test for soil to directly support new growth
 		(nodes[-1][-1][0].soil or
 		nodes[1][-1][0].soil or
@@ -135,9 +134,7 @@ local grow_mycelium = function(pos)
 	then
 		table.insert(valid_targets, {x=pos.x, y=pos.y-1, z=pos.z})
 	end
-	end
+	if nodes[0][1][0].buildable and
-	if nodes[0][1][0].buildable then
-			if 
 		-- test for soil to directly support new growth
 		(nodes[-1][1][0].soil or
 		nodes[1][1][0].soil or
@@ -156,9 +153,7 @@ local grow_mycelium = function(pos)
 	then
 		table.insert(valid_targets, {x=pos.x, y=pos.y+1, z=pos.z})
 	end
-	end
+	if nodes[0][0][-1].buildable and
-	if nodes[0][0][-1].buildable then
-		if 
 		-- test for soil to directly support new growth
 		(nodes[-1][0][-1].soil or
 		nodes[1][0][-1].soil or
@@ -177,9 +172,7 @@ local grow_mycelium = function(pos)
 	then
 		table.insert(valid_targets, {x=pos.x, y=pos.y, z=pos.z-1})
 	end
-	end
+	if nodes[0][0][1].buildable and
-	if nodes[0][0][1].buildable then
-		if 
 		-- test for soil to directly support new growth
 		(nodes[-1][0][1].soil or
 		nodes[1][0][1].soil or
@@ -198,54 +191,101 @@ local grow_mycelium = function(pos)
 	then
 		table.insert(valid_targets, {x=pos.x, y=pos.y, z=pos.z+1})
 	end
-	end
 	
 	return valid_targets
 end
 
+local grow_mycelium = function(pos, meristem_name)
+	local new_meristems = {}
+	-- Can we grow? If so, pick a random direction and add a new meristem there
+	local targets = find_mycelium_growth_targets(pos)
+	local target_count = #targets
+	if target_count > 0 then
+		local target = targets[math.random(1,target_count)]
+		minetest.set_node(target, {name=meristem_name})
+		table.insert(new_meristems, target)
+	else
+		--nowhere to grow, turn into a rooted hypha and we're done
+		minetest.set_node(pos, {name="df_primordial_items:giant_hypha_root"})
+		return new_meristems
+	end
+
+	if math.random() < 0.05 then
+	-- Split - try again from here next time
+		table.insert(new_meristems, pos)
+	-- Otherwise, just turn into a hypha and we're done
+	elseif math.random() < 0.333 then
+		minetest.set_node(pos, {name="df_primordial_items:giant_hypha_root"})
+	else
+		minetest.set_node(pos, {name="df_primordial_items:giant_hypha"})
+	end
+	return new_meristems
+end
+
+local min_growth_delay = minetest.settings:get_key("dfcaverns_mycelium_min_growth_delay") or 240
+local max_growth_delay = minetest.settings:get_key("dfcaverns_mycelium_max_growth_delay") or 400
 
 minetest.register_node("df_primordial_items:giant_hypha_apical_meristem", {
 	description = S("Giant Hypha Apical Meristem"),
 	tiles = {
-		{name="dfcaverns_mush_stalk_side.png^[brighten"},
+		{name="dfcaverns_mush_giant_hypha.png^[brighten"},
 	},
     connects_to = {"group:hypha"},
     connect_sides = { "top", "bottom", "front", "left", "back", "right" },
 	drawtype = "nodebox",
 	light_source = 6,
-	node_box = {
+	node_box = get_node_box(0.25, 0.375),
-        type = "connected",
-        fixed = {-0.25,-0.25,-0.25,0.25,0.25,0.25},
-        connect_top = {-0.375, 0, -0.375, 0.375, 0.5, 0.375},
-        connect_bottom = {-0.375, -0.5, -0.375, 0.375, 0, 0.375},
-        connect_back = {-0.375, -0.375, 0, 0.375, 0.375, 0.5},
-        connect_right = {0, -0.375, -0.375, 0.5, 0.375, 0.375},
-        connect_front = {-0.375, -0.375, -0.5, 0.375, 0.375, 0},
-        connect_left = {-0.5, -0.375, -0.375, 0, 0.375, 0.375},
-        disconnected = {-0.375,-0.375,-0.375,0.375,0.375,0.375},
-    },
 	paramtype = "light",
 
 	is_ground_content = false,
-	groups = {oddly_breakable_by_hand = 1, choppy = 2, hypha =1},
+	groups = {oddly_breakable_by_hand = 1, choppy = 2, hypha = 1, light_sensitive_fungus = 13},
 	sounds = default.node_sound_wood_defaults(),
 	on_construct = function(pos)
-		minetest.get_node_timer(pos):start(1.0)
+		minetest.get_node_timer(pos):start(math.random(min_growth_delay,max_growth_delay))
 	end,
 	on_timer = function(pos, elapsed)
-		--if math.random() < 0.99 then
+		local new_meristems = grow_mycelium(pos, "df_primordial_items:giant_hypha_apical_meristem")
-			local targets = grow_mycelium(pos)
+		for _, newpos in ipairs(new_meristems) do
-			local target_count = #targets
+			minetest.get_node_timer(newpos):start(math.random(min_growth_delay,max_growth_delay))
-			if target_count > 0 then
-				minetest.set_node(targets[math.random(1,target_count)], {name="df_primordial_items:giant_hypha_apical_meristem"})
-			end
-		--end
-		if math.random() < 0.05 then
-			minetest.get_node_timer(pos):start(1.0) -- branch
-		elseif math.random() < 0.5 then
-			minetest.set_node(pos, {name="df_primordial_items:giant_hypha_root"})
-		else
-			minetest.set_node(pos, {name="df_primordial_items:giant_hypha"})
 		end
 	end,
 })
+
+-- this version grows instantly via ABM, is meant for mapgen usage
+minetest.register_node("df_primordial_items:giant_hypha_apical_mapgen", {
+	description = S("Giant Hypha Apical Meristem"),
+	tiles = {
+		{name="dfcaverns_mush_giant_hypha.png^[brighten"},
+	},
+    connects_to = {"group:hypha"},
+    connect_sides = { "top", "bottom", "front", "left", "back", "right" },
+	drawtype = "nodebox",
+	light_source = 6,
+	node_box = get_node_box(0.25, 0.375),
+	paramtype = "light",
+
+	is_ground_content = false,
+	groups = {oddly_breakable_by_hand = 1, choppy = 2, hypha = 1, light_sensitive_fungus = 13},
+	sounds = default.node_sound_wood_defaults(),
+})
+
+df_primordial_items.grow_mycelium_immediately = function(pos)
+	local stack = {pos}
+	while #stack > 0 do
+		local pos = table.remove(stack)
+		local new_poses = grow_mycelium(pos, "df_primordial_items:giant_hypha_apical_meristem")
+		for _, new_pos in ipairs(new_poses) do
+			table.insert(stack, new_pos)
+		end
+	end	
+end
+
+minetest.register_abm({
+	label = "Mycelium mapgen growth",
+	nodenames = {"df_primordial_items:giant_hypha_apical_mapgen"},
+	interval = 1.0,
+	chance = 1,
+	action = function(pos, node, active_object_count, active_object_count_wider)
+		df_primordial_items.grow_mycelium_immediately(pos)
+	end
+})

df_primordial_items/settingtypes.txt

@@ -0,0 +1,2 @@
+dfcaverns_mycelium_min_growth_delay (Minimum mycelium growth delay) int 240
+dfcaverns_mycelium_max_growth_delay (Maximum mycelium growth delay) int 400