initial commit

README

@@ -0,0 +1,84 @@
+README file for Plantlife mod, by Vanessa Ezekowitz
+---------------------------------------------------
+
+Plantlife is a combined form of my Flowers, Jungle Grass, and Poison Ivy mods 
+and has been significantly rewritten and re-organized.  This mod supplies all 
+three of these components and should be 100% compatible with mods that used the 
+old versions.
+
+Its purpose is to add various kinds of flowers, cotton plants, water foliage, 
+poison ivy, and jungle grass in a few sizes.  All of these are spawned as 
+normal nodes and can be collected and used in any recipes that depend on the 
+old mods.
+
+Spawning of plandts is sensitive to the amount of available light.  Flowers, 
+cotton, and waterlilies only spawn when there at least a signficant amount of 
+light.  Seaweed will grow only in dimly-lit areas.  Jungle grass and poison ivy 
+also grow in the daytime, but require less light than flowers.
+
+------------------------------------------------------------------------------
+
+Important details:
+
+Configuration: Any of the three components of this mod can be disabled by 
+editing plants/init.lua, near the beginning of the file, and changing one or 
+more of these lines to false:
+
+local enable_flowers = true
+local enable_junglegrass = true
+local enable_poisonivy = true
+
+Dependencies: Just the game's default stuff.
+
+Recommends: Nothing in particular.
+
+Conflicts: This mod should not be installed alongside the original Flowers, 
+Jungle Grass, or Poison Ivy mods.  If those exist, delete them, as this mod 
+supplies all of their functionality.
+
+Software Requirements: This mod was written for Minetest 0.4.4 or later, but it 
+should work on pretty much any old or recent 0.4.x version.  It will not work 
+with 0.3.x since that version does not support modding.
+
+------------------------------------------------------------------------------
+
+Crafting:
+
+Only Flowers have crafting recipes.  For a flower pot, put three
+clay bricks in the crafting grid in a "v" shape like so (yields 1):
+
+	- - -
+	B - B
+	- B -
+
+To put a flower into a pot, just put one of each into the crafting grid.
+
+------------------------------------------------------------------------------
+
+Notes:
+
+Flowers has been completely rewritten, almost from scratch, using the most 
+recent and advanced features the game engine has to offer.  It should be 
+significantly faster than the original Ironzorg Flowers mod.  Flowers and 
+cotton spawn on grass only, seaweed spawns on water or grass close to the 
+shoreline, or on very small stone islands in water.  Waterlilies of course 
+spawn on water.
+
+There are four different sizes of jungle grasses, all of which yield a single 
+junglegrass object when gathered (so all four sizes may be used where jungle 
+grass is called for).  The largest size uses the game's standard jungle grass 
+node, while the others are defined by this mod.
+
+Junglegrass will spawn on grass, sand, desert sand and the tops of papyrus and 
+cactus (though rarely), and will do so anywhere in the map.  Grass on the 
+ground will grow and eventually disappear (die), while grass in the desert will 
+grow and eventually turn into dry shrubs.
+
+Poison Ivy will spawn on grass and in some cases, on vertical surfaces 
+including trees and jungle trees where they meet the dirt or grass.  Ivy 
+previously spawned on the ground taller/thicker or start climbing up said 
+vertical surfaces and trees.
+
+At present, the poison ivy presents little more than an annoyance - they can 
+only be cut down and either re-planted or thrown away.  No damage is done by 
+harvesting them, yet. ;-)

README~

@@ -0,0 +1,60 @@
+--- README for Flowers:
+
+This is a mostly-rewrite of Ironzorg's flowers mod, using more recent features 
+in the game, to make the code perform better.
+
+Dependencies: none (just the game's default stuff)
+
+License:  cc-by-sa 3.0 for the textures, WTFPL for everything else.
+
+--- README for Jungle Grass:
+
+Since recent versions of Minetest no longer contain jungle biomes, and 
+hence no jungle grass, I created this mod to re-add said grass back into 
+the game, with a twist: There are now four different sizes of grasses, 
+all of which yield a single junglegrass object when gathered (so all 
+four sizes may be used where jungle grass is called for).  The largest 
+size uses the game's standard jungle grass node, while the others are 
+defined by this mod.
+
+Junglegrass will spawn on dirt, grass, sand, desert sand and the tops of 
+papyrus and cactus (though rarely), and will do so anywhere in the map.  
+Grass on the ground will grow and eventually die (or turn into dry 
+shrubs, in the desert), given enough time.
+
+Adjusting the overall spawn/growth rate is easily done by tweaking the 
+MAX_RATIO variable at the top of init.lua.  A larger value results in 
+less frequent events.
+
+Dependencies: none (just the game's default stuff)
+
+License:  cc-by-sa 3.0 for the textures, WTFPL for everything else.
+
+--- README for Poison Ivy:
+
+This is a mod for minetest and its forks to add poison ivy.
+
+Ivy will spawn on dirt or grass, and in some cases, on vertical 
+surfaces, trees, and jungle trees where they meet the dirt or grass.  
+Ivy previously spawned will occasionally grow taller/thicker or start 
+climbing up said vertical surfaces and trees.
+
+At present, the plants present little more than an annoyance - they can 
+only be cut down and either re-planted or thrown away.  No damage is 
+done by harvesting them, yet. ;-)
+
+Mod based on ironzorg's flowers mod; I left the spawn rates the same so 
+the plants don't take over your world (in fact, they may take a few 
+day/night cycles before you start to notice them).  If you want a really 
+overgrown environment just lower the MAX_RATIO and GROWING_DELAY 
+variables at the top of init.lua.
+
+Textures hand-drawn by me (16x16px).
+
+License: WTFPL (applies to all parts)
+
+Depends: None.
+
+No crafting recipes (didn't see a point :-) ).
+
+

copyright.txt

@@ -0,0 +1,10 @@
+Ironzorg's Flowers mod served as the basis for the three mods that eventually 
+went into creating this file.  Any code still remaining from that mod is 
+entirely his work (though I'm pretty sure it's all been phased out).
+
+Flowers textures by Ironzorg.
+
+Junglegrass textures are modified copies of the original one from the game's 
+default set.
+
+All remaining code, textures, etc. by Vanessa Ezekowitz.

flowers-changelog.txt

@@ -0,0 +1,24 @@
+Changelog
+---------
+
+2012-08-06: Tweaked selection boxes on all nodes.  Tweaked seaweed to use 
+signlike instead of raillike drawtype, (still forced to only spawn flat as 
+usual).  Adjusted light level limits to give it more time to grow.  Created 
+this changelog file using github commit messages as the basis.  Shrunk the 
+geranium flower down a bit to better match the others.
+
+2012-08-03: Tuned out the random-numbers-inside-ABM stuff. Uses the ABM's 
+chance setting instead.  Should be approximately the same as before, but 
+hopefully using a tad less CPU.  Minor tweak to ABM interval/growing delay.
+
+2012-08-01: Added blue geranium to the collection of flowers.
+
+2012-07-31: Disable debug by default.
+
+2012-07-30: many updates over the course of the day - first commit, removed 
+some redundant files, added wield/inventory image entries for each item, to 
+force the game to draw them properly (these shouldn't be needed, must be a 
+bug).  Tweaked spawn code so that the radius check also includes the name of 
+the item being spawned as well as items in group:flower, that way all items can 
+have a radius test, and not just those in group:flower. Fiddled with the spawn 
+rates a bit.

junglegrass-changelog.txt

@@ -0,0 +1,24 @@
+Changelog
+---------
+
+2012-08-03: Mild rewrite to adapt the mod to use perlin noise while spawning. 
+Also got rid of the random-numbers-inside-abm stuff, now using the abm's own 
+'chance' parameter instead.  Tuned various settings to try to retain the same 
+overall density and growth rates as in the previous version.  Moved this 
+changelog into a separate file.
+
+2012-07-12: moved project to github.
+
+2012-07-09 (a bit later): tuned the spawn/grow rates a bit more, made the 
+numbers more sane.  Added a radius check to limit the density of the spawned 
+grasses (they won't grow near each other or near dry shrubs or cactus, though 
+they still grow on the top of said cacti).
+
+2012-07-09: Added cactus, sand, and desert sand as spawning surfaces.  Reduced 
+and tuned the spawn rates a bit to try to balance things out.  Made that which 
+spawns on grass, dirt, or sand start out at any size, grow over time, and 
+eventually die off.  Limited desert sand to only the first two sizes (the 
+smallest size will grow one step, eventually), which will eventually die and 
+turn into dry shrubs.  Only the two smallest sizes can spawn on cactus or 
+papyrus (and they don't grow or die).  Fixed slightly off-center smallest size.  
+Fixed selection boxes.

license.txt

@@ -0,0 +1,3 @@
+For the original Ironzorg flower textures, WTFPL
+For the rest of the textures, CC-BY-SA
+For all code and everything else in this mod, WTFPL.

plants/depends.txt

@@ -0,0 +1 @@
+default

plants/init.lua

@@ -0,0 +1,448 @@
+-- Plantlife mod by Vanessa Ezekowitz
+-- 2012-11-29
+--
+-- This mod combines all of the functionality from poison ivy,
+-- flowers, and jungle grass.  If you have any of these, you no
+-- longer need them.
+--
+-- License:
+--	CC-BY-SA for most textures, except flowers
+--	WTFPL for the flowers textures
+--	WTFPL for all code and everything else
+
+
+-- Edit these first few variables to turn the various parts on/off
+-- or to tweak the overall settings.
+
+local enable_flowers = true
+local enable_junglegrass = true
+local enable_poisonivy = true
+
+local plantlife_debug = true
+
+local plantlife_seed_diff = 123
+local perlin_octaves = 3
+local perlin_persistence = 0.2
+local perlin_scale = 25
+
+local plantlife_limit = 0.6 -- compared against perlin noise.  lower = more abundant
+
+local spawn_delay = 2000 -- 2000
+local spawn_chance = 100 -- 100
+local grow_delay = 1000 -- 1000
+local grow_chance = 10 -- 10
+
+-- Stuff from here on down shouldn't need to be edited.
+
+local loadstr = "[Plantlife] Loaded (enabled"
+
+local flowers_seed_diff = plantlife_seed_diff
+local junglegrass_seed_diff = plantlife_seed_diff + 10
+local poisonivy_seed_diff = plantlife_seed_diff + 10
+
+local flowers_list = {
+	{ "Rose",		"rose", 		spawn_delay,	10,	spawn_chance	, 10},
+	{ "Tulip",		"tulip",		spawn_delay,	10,	spawn_chance	, 10},
+	{ "Yellow Dandelion",	"dandelion_yellow",	spawn_delay,	10,	spawn_chance*2	, 10},
+	{ "White Dandelion",	"dandelion_white",	spawn_delay,	10,	spawn_chance*2	, 10},
+	{ "Blue Geranium",	"geranium",		spawn_delay,	10,	spawn_chance	, 10},
+	{ "Viola",		"viola",		spawn_delay,	10,	spawn_chance	, 10},
+	{ "Cotton Plant",	"cotton",		spawn_delay,	10,	spawn_chance*2	, 10},
+}
+
+local grasses_list = {
+        {"junglegrass:shortest","junglegrass:short" },
+        {"junglegrass:short"   ,"junglegrass:medium" },
+        {"junglegrass:medium"  ,"default:junglegrass" },
+        {"default:junglegrass" , nil}
+}
+
+local verticals_list = {
+	"default:dirt",
+	"default:dirt_with_grass",
+	"default:stone",
+	"default:cobble",
+	"default:mossycobble",
+	"default:brick",
+	"default:tree",
+	"default:jungletree",
+	"default:coal",
+	"default:iron"
+}
+
+-- Local functions
+
+math.randomseed(os.time())
+
+local dbg = function(s)
+	if plantlife_debug then
+		print("[Plantlife] " .. s)
+	end
+end
+
+local is_node_loaded = function(node_pos)
+	n = minetest.env:get_node_or_nil(node_pos)
+	if (n == nil) or (n.name == "ignore") then
+		return false
+	end
+	return true
+end
+
+-- The spawning ABM
+
+spawn_on_surfaces = function(sdelay, splant, sradius, schance, ssurface, savoid, seed_diff, lightmin, lightmax, nneighbors, ocount)
+	if lightmin == nil then lightmin = 0 end
+	if lightmax == nil then lightmax = LIGHT_MAX end
+	if nneighbors == nil then nneighbors = ssurface end
+	if ocount == nil then ocount = 0 end
+	dbg(sdelay.." "..splant.." "..sradius.." "..schance.." "..ssurface.." "..dump(savoid).." "..lightmin.." "..lightmax.." "..dump(nneighbors).." "..ocount)
+	minetest.register_abm({
+		nodenames = { ssurface },
+		interval = sdelay,
+		chance = schance,
+		neighbors = nneighbors,
+		action = function(pos, node, active_object_count, active_object_count_wider)
+			local p_top = { x = pos.x, y = pos.y + 1, z = pos.z }	
+			local n_top = minetest.env:get_node(p_top)
+			local perlin = minetest.env:get_perlin(seed_diff, perlin_octaves, perlin_persistence, perlin_scale )
+			local noise = perlin:get2d({x=p_top.x, y=p_top.z})
+			if ( noise > plantlife_limit ) and (n_top.name == "air") and is_node_loaded(p_top) then
+				local n_light = minetest.env:get_node_light(p_top, nil)
+				if (minetest.env:find_node_near(p_top, sradius, savoid) == nil )
+				   and (n_light >= lightmin)
+				   and (n_light <= lightmax)
+				and table.getn(minetest.env:find_nodes_in_area({x=pos.x-1, y=pos.y, z=pos.z-1}, {x=pos.x+1, y=pos.y, z=pos.z+1}, nneighbors)) > ocount
+				then
+					local walldir = plant_valid_wall(p_top)
+					if splant == "poisonivy:seedling" and walldir ~= nil then
+						dbg("Spawn: poisonivy:climbing at "..dump(p_top).." on "..ssurface)
+						minetest.env:add_node(p_top, { name = "poisonivy:climbing", param2 = walldir })
+					else
+						dbg("Spawn: "..splant.." at "..dump(p_top).." on "..ssurface)
+						minetest.env:add_node(p_top, { name = splant })
+					end
+				end
+			end
+		end
+	})
+end
+
+-- The growing ABM
+
+grow_plants = function(gdelay, gchance, gplant, gresult, dry_early_node, dont_grow_nodes)
+	minetest.register_abm({
+		nodenames = { gplant },
+		interval = gdelay,
+		chance = gchance,
+		action = function(pos, node, active_object_count, active_object_count_wider)
+			local p_top = {x=pos.x, y=pos.y+1, z=pos.z}
+			local p_bot = {x=pos.x, y=pos.y-1, z=pos.z}
+			local n_top = minetest.env:get_node(p_top)
+			local n_bot = minetest.env:get_node(p_bot)
+
+			dbg("abm triggered for "..gplant.." on "..n_bot.name.." at "..dump(pos).." -- checking if its in "..dump(dont_grow_nodes))
+			if string.find(dump(dont_grow_nodes), n_bot.name) == nil and n_top.name == "air" then
+			dbg("It wasn't, and it has air above it.")
+				-- corner case for changing short junglegrass to dry shrub in desert
+				if (n_bot.name == dry_early_node) and (gplant == "junglegrass:short") then
+					gresult = "default:dry_shrub"
+					dbg("Want to change "..gplant.." to "..gresult)
+				end
+
+				-- corner case for wall-climbing poison ivy
+				if gplant == "poisonivy:climbing" then
+					dbg("Want to grow "..gplant)
+					local walldir=plant_valid_wall(p_top)
+					if walldir ~= nil then
+						dbg("Grow: "..gplant.." upwards to ("..dump(p_top)..")")
+						minetest.env:add_node(p_top, { name = gplant, param2 = walldir })
+					end
+
+				elseif gresult ~= nil then
+					dbg("Grow: "..gplant.." -> "..gresult.." at ("..dump(pos)..")")
+					minetest.env:add_node(pos, { name = gresult })
+				else
+					dbg("Die: "..gplant.." at ("..dump(pos)..")")
+					minetest.env:remove_node(pos)
+				end
+			end
+		end
+	})
+end
+
+-- function to decide if a node has a wall that's in verticals_list{}
+-- returns wall direction of valid node, or nil if invalid.
+
+plant_valid_wall = function(wallpos)
+	local walldir = nil
+	local verts = dump(verticals_list)
+
+	local testpos = { x = wallpos.x-1, y = wallpos.y, z = wallpos.z   }
+	if string.find(verts, minetest.env:get_node(testpos).name) ~= nil then walldir=3 end
+
+	local testpos = { x = wallpos.x+1, y = wallpos.y, z = wallpos.z   }
+	if string.find(verts, minetest.env:get_node(testpos).name) ~= nil then walldir=2 end
+
+	local testpos = { x = wallpos.x  , y = wallpos.y, z = wallpos.z-1 }
+	if string.find(verts, minetest.env:get_node(testpos).name) ~= nil then walldir=5 end
+
+	local testpos = { x = wallpos.x  , y = wallpos.y, z = wallpos.z+1 }
+	if string.find(verts, minetest.env:get_node(testpos).name) ~= nil then walldir=4 end
+
+	return walldir
+end
+
+-- ###########################################################################
+-- Flowers section
+
+if enable_flowers then
+	loadstr = loadstr.." flowers"
+	for i in ipairs(flowers_list) do
+		local flowerdesc = flowers_list[i][1]
+		local flower     = flowers_list[i][2]
+		local delay      = flowers_list[i][3]
+		local radius     = flowers_list[i][4]
+		local chance     = flowers_list[i][5]
+
+		minetest.register_node(":flowers:flower_"..flower, {
+			description = flowerdesc,
+			drawtype = "plantlike",
+			tiles = { "flower_"..flower..".png" },
+			inventory_image = "flower_"..flower..".png",
+			wield_image = "flower_"..flower..".png",
+			sunlight_propagates = true,
+			paramtype = "light",
+			walkable = false,
+			groups = { snappy = 3,flammable=2, flower=1 },
+			sounds = default.node_sound_leaves_defaults(),
+			selection_box = {
+				type = "fixed",
+				fixed = { -0.15, -0.5, -0.15, 0.15, 0.2, 0.15 },
+			},	
+		})
+
+		minetest.register_node(":flowers:flower_"..flower.."_pot", {
+			description = flowerdesc.." in a pot",
+			drawtype = "plantlike",
+			tiles = { "flower_"..flower.."_pot.png" },
+			inventory_image = "flower_"..flower.."_pot.png",
+			wield_image = "flower_"..flower.."_pot.png",
+			sunlight_propagates = true,
+			paramtype = "light",
+			walkable = false,
+			groups = { snappy = 3,flammable=2 },
+			sounds = default.node_sound_leaves_defaults(),
+			selection_box = {
+				type = "fixed",
+				fixed = { -0.25, -0.5, -0.25, 0.25, 0.5, 0.25 },
+			},	
+		})
+
+		minetest.register_craft( {
+			type = "shapeless",
+			output = "flowers:flower_"..flower.."_pot",
+			recipe = {
+				"flowers:flower_pot",
+				"flowers:flower_"..flower
+			}
+		})
+
+		spawn_on_surfaces(delay, "flowers:flower_"..flower, radius, chance, "default:dirt_with_grass", {"group:flower"}, flowers_seed_diff)
+	end
+
+	minetest.register_node(":flowers:flower_waterlily", {
+		description = "Waterlily",
+		drawtype = "raillike",
+		tiles = { "flower_waterlily.png" },
+		inventory_image = "flower_waterlily.png",
+		wield_image  = "flower_waterlily.png",
+		sunlight_propagates = true,
+		paramtype = "light",
+		paramtype2 = "wallmounted",
+		walkable = false,
+		groups = { snappy = 3,flammable=2,flower=1 },
+		sounds = default.node_sound_leaves_defaults(),
+		selection_box = {
+			type = "fixed",
+			fixed = { -0.4, -0.5, -0.4, 0.4, -0.45, 0.4 },
+		},	
+	})
+
+	minetest.register_node(":flowers:flower_seaweed", {
+		description = "Seaweed",
+		drawtype = "signlike",
+		tiles = { "flower_seaweed.png" },
+		inventory_image = "flower_seaweed.png",
+		wield_image  = "flower_seaweed.png",
+		sunlight_propagates = true,
+		paramtype = "light",
+		paramtype2 = "wallmounted",
+		walkable = false,
+		groups = { snappy = 3,flammable=2,flower=1 },
+		sounds = default.node_sound_leaves_defaults(),
+		selection_box = {
+			type = "fixed",
+			fixed = { -0.5, -0.5, -0.5, 0.5, -0.4, 0.5 },
+		},	
+	})
+
+	spawn_on_surfaces(spawn_delay/2, "flowers:flower_waterlily", 15  , spawn_chance*3, "default:water_source"   , {"group:flower"}, flowers_seed_diff, 10)
+	spawn_on_surfaces(spawn_delay*2, "flowers:flower_seaweed"  ,  0.1, spawn_chance*2, "default:water_source"   , {"group:flower"}, flowers_seed_diff,  4, 10, {"default:dirt_with_grass"}, 0)
+	spawn_on_surfaces(spawn_delay*2, "flowers:flower_seaweed"  ,  0.1, spawn_chance*2, "default:dirt_with_grass", {"group:flower"}, flowers_seed_diff,  4, 10, {"default:water_source"}   , 1)
+	spawn_on_surfaces(spawn_delay*2, "flowers:flower_seaweed"  ,  0.1, spawn_chance*2, "default:stone"          , {"group:flower"}, flowers_seed_diff,  4, 10, {"default:water_source"}   , 6)
+
+
+	minetest.register_craftitem(":flowers:flower_pot", {
+		description = "Flower Pot",
+		inventory_image = "flower_pot.png",
+	})
+
+	minetest.register_craft( {
+		output = "flowers:flower_pot",
+		recipe = {
+		        { "default:clay_brick", "", "default:clay_brick" },
+		        { "", "default:clay_brick", "" }
+		},
+	})
+
+	minetest.register_craftitem(":flowers:cotton", {
+	    description = "Cotton",
+	    image = "cotton.png",
+	})
+
+	minetest.register_craft({
+	    output = "flowers:cotton 3",
+	    recipe ={
+		{"flowers:flower_cotton"},
+	    }
+	})	
+
+end
+
+-- ###########################################################################
+-- Jungle Grass section
+
+if enable_junglegrass then
+	loadstr = loadstr.." junglegrass"
+
+	minetest.register_node(':junglegrass:medium', {
+		description = "Jungle Grass (medium height)",
+		drawtype = 'plantlike',
+		tile_images = { 'junglegrass_medium.png' },
+		inventory_image = 'junglegrass_medium.png',
+		wield_image = 'junglegrass_medium.png',
+		sunlight_propagates = true,
+		paramtype = 'light',
+		walkable = false,
+		groups = { snappy = 3, flammable=2, junglegrass=1 },
+		sounds = default.node_sound_leaves_defaults(),
+		drop = 'default:junglegrass',
+
+		selection_box = {
+			type = "fixed",
+			fixed = {-0.4, -0.5, -0.4, 0.4, 0.5, 0.4},
+		},
+	})
+
+	minetest.register_node(':junglegrass:short', {
+		description = "Jungle Grass (short)",
+		drawtype = 'plantlike',
+		tile_images = { 'junglegrass_short.png' },
+		inventory_image = 'junglegrass_short.png',
+		wield_image = 'junglegrass_short.png',
+		sunlight_propagates = true,
+		paramtype = 'light',
+		walkable = false,
+		groups = { snappy = 3, flammable=2, junglegrass=1 },
+		sounds = default.node_sound_leaves_defaults(),
+		drop = 'default:junglegrass',
+		selection_box = {
+			type = "fixed",
+			fixed = {-0.4, -0.5, -0.4, 0.4, 0.3, 0.4},
+		},
+	})
+
+	minetest.register_node(':junglegrass:shortest', {
+		description = "Jungle Grass (very short)",
+		drawtype = 'plantlike',
+		tile_images = { 'junglegrass_shortest.png' },
+		inventory_image = 'junglegrass_shortest.png',
+		wield_image = 'junglegrass_shortest.png',
+		sunlight_propagates = true,
+		paramtype = 'light',
+		walkable = false,
+		groups = { snappy = 3, flammable=2, junglegrass=1 },
+		sounds = default.node_sound_leaves_defaults(),
+		drop = 'default:junglegrass',
+		selection_box = {
+			type = "fixed",
+			fixed = {-0.3, -0.5, -0.3, 0.3, 0, 0.3},
+		},
+	})
+
+	spawn_on_surfaces(spawn_delay*2, "junglegrass:shortest", 4, spawn_chance/50, "default:dirt_with_grass", {"group:junglegrass", "default:junglegrass", "default:dry_shrub"}, junglegrass_seed_diff, 5)
+	spawn_on_surfaces(spawn_delay*2, "junglegrass:shortest", 4, spawn_chance/50, "default:sand"           , {"group:junglegrass", "default:junglegrass", "default:dry_shrub"}, junglegrass_seed_diff, 5)
+	spawn_on_surfaces(spawn_delay*2, "junglegrass:shortest", 4, spawn_chance/10, "default:desert_sand"    , {"group:junglegrass", "default:junglegrass", "default:dry_shrub"}, junglegrass_seed_diff, 5)
+	spawn_on_surfaces(spawn_delay*2, "junglegrass:shortest", 4, spawn_chance/10, "default:desert_sand"    , {"group:junglegrass", "default:junglegrass", "default:dry_shrub"}, junglegrass_seed_diff, 5)
+
+	for i in ipairs(grasses_list) do
+		grow_plants(grow_delay, grow_chance/2, grasses_list[i][1], grasses_list[i][2], "default:desert_sand", {"default:cactus", "default:papyrus"})
+	end		
+end
+
+-- ###########################################################################
+-- Poison Ivy section
+
+if enable_poisonivy then
+	loadstr = loadstr.." poisonivy"
+
+	minetest.register_node(':poisonivy:seedling', {
+		description = "Poison ivy (seedling)",
+		drawtype = 'plantlike',
+		tile_images = { 'poisonivy_seedling.png' },
+		inventory_image = 'poisonivy_seedling.png',
+		wield_image = 'poisonivy_seedling.png',
+		sunlight_propagates = true,
+		paramtype = 'light',
+		walkable = false,
+		groups = { snappy = 3, poisonivy=1 },
+		sounds = default.node_sound_leaves_defaults(),
+	})
+
+	minetest.register_node(':poisonivy:sproutling', {
+		description = "Poison ivy (sproutling)",
+		drawtype = 'plantlike',
+		tile_images = { 'poisonivy_sproutling.png' },
+		inventory_image = 'poisonivy_sproutling.png',
+		wield_image = 'poisonivy_sproutling.png',
+		sunlight_propagates = true,
+		paramtype = 'light',
+		walkable = false,
+		groups = { snappy = 3, poisonivy=1 },
+		sounds = default.node_sound_leaves_defaults(),
+	})
+
+	minetest.register_node(':poisonivy:climbing', {
+		description = "Poison ivy (climbing plant)",
+		drawtype = 'signlike',
+		tile_images = { 'poisonivy_climbing.png' },
+		inventory_image = 'poisonivy_climbing.png',
+		wield_image = 'poisonivy_climbing.png',
+		sunlight_propagates = true,
+		paramtype = 'light',
+		paramtype2 = 'wallmounted',
+		walkable = false,
+		groups = { snappy = 3, poisonivy=1 },
+		sounds = default.node_sound_leaves_defaults(),
+		selection_box = {
+			type = "wallmounted",
+			--wall_side = = <default>
+		},
+	})
+
+	spawn_on_surfaces(spawn_delay, "poisonivy:seedling", 10 , spawn_chance/10, "default:dirt_with_grass", {"group:poisonivy","group:flower"}, poisonivy_seed_diff, 7)
+	grow_plants(spawn_delay, grow_chance, "poisonivy:seedling", "poisonivy:sproutling")
+	grow_plants(spawn_delay, grow_chance*2, "poisonivy:climbing")
+end
+
+print(loadstr..")")

plants/init.lua~

@@ -0,0 +1,448 @@
+-- Plantlife mod by Vanessa Ezekowitz
+-- 2012-11-29
+--
+-- This mod combines all of the functionality from poison ivy,
+-- flowers, and jungle grass.  If you have any of these, you no
+-- longer need them.
+--
+-- License:
+--	CC-BY-SA for most textures, except flowers
+--	WTFPL for the flowers textures
+--	WTFPL for all code and everything else
+
+
+-- Edit these first few variables to turn the various parts on/off
+-- or to tweak the overall settings.
+
+local enable_flowers = true
+local enable_junglegrass = true
+local enable_poisonivy = true
+
+local plantlife_debug = true
+
+local plantlife_seed_diff = 123
+local perlin_octaves = 3
+local perlin_persistence = 0.2
+local perlin_scale = 25
+
+local plantlife_limit = 0.6 -- lower = more abundant
+
+local spawn_delay = 20 -- 2000
+local spawn_chance = 2 -- 100
+local grow_delay = 10 -- 1000
+local grow_chance = 2 -- 10
+
+-- Stuff from here on down shouldn't need to be edited.
+
+local loadstr = "[Plantlife] Loaded (enabled"
+
+local flowers_seed_diff = plantlife_seed_diff
+local junglegrass_seed_diff = plantlife_seed_diff + 10
+local poisonivy_seed_diff = plantlife_seed_diff + 10
+
+local flowers_list = {
+	{ "Rose",		"rose", 		spawn_delay,	10,	spawn_chance	, 10},
+	{ "Tulip",		"tulip",		spawn_delay,	10,	spawn_chance	, 10},
+	{ "Yellow Dandelion",	"dandelion_yellow",	spawn_delay,	10,	spawn_chance*2	, 10},
+	{ "White Dandelion",	"dandelion_white",	spawn_delay,	10,	spawn_chance*2	, 10},
+	{ "Blue Geranium",	"geranium",		spawn_delay,	10,	spawn_chance	, 10},
+	{ "Viola",		"viola",		spawn_delay,	10,	spawn_chance	, 10},
+	{ "Cotton Plant",	"cotton",		spawn_delay,	10,	spawn_chance*2	, 10},
+}
+
+local grasses_list = {
+        {"junglegrass:shortest","junglegrass:short" },
+        {"junglegrass:short"   ,"junglegrass:medium" },
+        {"junglegrass:medium"  ,"default:junglegrass" },
+        {"default:junglegrass" , nil}
+}
+
+local verticals_list = {
+	"default:dirt",
+	"default:dirt_with_grass",
+	"default:stone",
+	"default:cobble",
+	"default:mossycobble",
+	"default:brick",
+	"default:tree",
+	"default:jungletree",
+	"default:coal",
+	"default:iron"
+}
+
+-- Local functions
+
+math.randomseed(os.time())
+
+local dbg = function(s)
+	if plantlife_debug then
+		print("[Plantlife] " .. s)
+	end
+end
+
+local is_node_loaded = function(node_pos)
+	n = minetest.env:get_node_or_nil(node_pos)
+	if (n == nil) or (n.name == "ignore") then
+		return false
+	end
+	return true
+end
+
+-- The spawning ABM
+
+spawn_on_surfaces = function(sdelay, splant, sradius, schance, ssurface, savoid, seed_diff, lightmin, lightmax, nneighbors, ocount)
+	if lightmin == nil then lightmin = 0 end
+	if lightmax == nil then lightmax = LIGHT_MAX end
+	if nneighbors == nil then nneighbors = ssurface end
+	if ocount == nil then ocount = 0 end
+	dbg(sdelay.." "..splant.." "..sradius.." "..schance.." "..ssurface.." "..dump(savoid).." "..lightmin.." "..lightmax.." "..dump(nneighbors).." "..ocount)
+	minetest.register_abm({
+		nodenames = { ssurface },
+		interval = sdelay,
+		chance = schance,
+		neighbors = nneighbors,
+		action = function(pos, node, active_object_count, active_object_count_wider)
+			local p_top = { x = pos.x, y = pos.y + 1, z = pos.z }	
+			local n_top = minetest.env:get_node(p_top)
+			local perlin = minetest.env:get_perlin(seed_diff, perlin_octaves, perlin_persistence, perlin_scale )
+			local noise = perlin:get2d({x=p_top.x, y=p_top.z})
+			if ( noise > plantlife_limit ) and (n_top.name == "air") and is_node_loaded(p_top) then
+				local n_light = minetest.env:get_node_light(p_top, nil)
+				if (minetest.env:find_node_near(p_top, sradius, savoid) == nil )
+--				   and (n_light >= lightmin)
+--				   and (n_light <= lightmax)
+				and table.getn(minetest.env:find_nodes_in_area({x=pos.x-1, y=pos.y, z=pos.z-1}, {x=pos.x+1, y=pos.y, z=pos.z+1}, nneighbors)) > ocount
+				then
+					local walldir = plant_valid_wall(p_top)
+					if splant == "poisonivy:seedling" and walldir ~= nil then
+						dbg("Spawn: poisonivy:climbing at "..dump(p_top).." on "..ssurface)
+						minetest.env:add_node(p_top, { name = "poisonivy:climbing", param2 = walldir })
+					else
+						dbg("Spawn: "..splant.." at "..dump(p_top).." on "..ssurface)
+						minetest.env:add_node(p_top, { name = splant })
+					end
+				end
+			end
+		end
+	})
+end
+
+-- The growing ABM
+
+grow_plants = function(gdelay, gchance, gplant, gresult, dry_early_node, dont_grow_nodes)
+	minetest.register_abm({
+		nodenames = { gplant },
+		interval = gdelay,
+		chance = gchance,
+		action = function(pos, node, active_object_count, active_object_count_wider)
+			local p_top = {x=pos.x, y=pos.y+1, z=pos.z}
+			local p_bot = {x=pos.x, y=pos.y-1, z=pos.z}
+			local n_top = minetest.env:get_node(p_top)
+			local n_bot = minetest.env:get_node(p_bot)
+
+			dbg("abm triggered for "..gplant.." on "..n_bot.name.." at "..dump(pos).." -- checking if its in "..dump(dont_grow_nodes))
+			if string.find(dump(dont_grow_nodes), n_bot.name) == nil and n_top.name == "air" then
+			dbg("It wasn't, and it has air above it.")
+				-- corner case for changing short junglegrass to dry shrub
+				if (n_bot.name == dry_early_node) and (gplant == "junglegrass:short") then
+					gresult = "default:dry_shrub"
+					dbg("Want to change "..gplant.." to "..gresult)
+				end
+
+				-- corner case for wall-climbing poison ivy
+				if gplant == "poisonivy:climbing" then
+					dbg("Want to grow "..gplant)
+					local walldir=plant_valid_wall(p_top)
+					if walldir ~= nil then
+						dbg("Grow: "..gplant.." upwards to ("..dump(p_top)..")")
+						minetest.env:add_node(p_top, { name = gplant, param2 = walldir })
+					end
+
+				elseif gresult ~= nil then
+					dbg("Grow: "..gplant.." -> "..gresult.." at ("..dump(pos)..")")
+					minetest.env:add_node(pos, { name = gresult })
+				else
+					dbg("Die: "..gplant.." at ("..dump(pos)..")")
+					minetest.env:remove_node(pos)
+				end
+			end
+		end
+	})
+end
+
+-- function to decide if a node has a wall that's in verticals_list{}
+-- returns wall direction of valid node, or nil if invalid.
+
+plant_valid_wall = function(wallpos)
+	local walldir = nil
+	local verts = dump(verticals_list)
+
+	local testpos = { x = wallpos.x-1, y = wallpos.y, z = wallpos.z   }
+	if string.find(verts, minetest.env:get_node(testpos).name) ~= nil then walldir=3 end
+
+	local testpos = { x = wallpos.x+1, y = wallpos.y, z = wallpos.z   }
+	if string.find(verts, minetest.env:get_node(testpos).name) ~= nil then walldir=2 end
+
+	local testpos = { x = wallpos.x  , y = wallpos.y, z = wallpos.z-1 }
+	if string.find(verts, minetest.env:get_node(testpos).name) ~= nil then walldir=5 end
+
+	local testpos = { x = wallpos.x  , y = wallpos.y, z = wallpos.z+1 }
+	if string.find(verts, minetest.env:get_node(testpos).name) ~= nil then walldir=4 end
+
+	return walldir
+end
+
+-- ###########################################################################
+-- Flowers section
+
+if enable_flowers then
+	loadstr = loadstr.." flowers"
+	for i in ipairs(flowers_list) do
+		local flowerdesc = flowers_list[i][1]
+		local flower     = flowers_list[i][2]
+		local delay      = flowers_list[i][3]
+		local radius     = flowers_list[i][4]
+		local chance     = flowers_list[i][5]
+
+		minetest.register_node(":flowers:flower_"..flower, {
+			description = flowerdesc,
+			drawtype = "plantlike",
+			tiles = { "flower_"..flower..".png" },
+			inventory_image = "flower_"..flower..".png",
+			wield_image = "flower_"..flower..".png",
+			sunlight_propagates = true,
+			paramtype = "light",
+			walkable = false,
+			groups = { snappy = 3,flammable=2, flower=1 },
+			sounds = default.node_sound_leaves_defaults(),
+			selection_box = {
+				type = "fixed",
+				fixed = { -0.15, -0.5, -0.15, 0.15, 0.2, 0.15 },
+			},	
+		})
+
+		minetest.register_node(":flowers:flower_"..flower.."_pot", {
+			description = flowerdesc.." in a pot",
+			drawtype = "plantlike",
+			tiles = { "flower_"..flower.."_pot.png" },
+			inventory_image = "flower_"..flower.."_pot.png",
+			wield_image = "flower_"..flower.."_pot.png",
+			sunlight_propagates = true,
+			paramtype = "light",
+			walkable = false,
+			groups = { snappy = 3,flammable=2 },
+			sounds = default.node_sound_leaves_defaults(),
+			selection_box = {
+				type = "fixed",
+				fixed = { -0.25, -0.5, -0.25, 0.25, 0.5, 0.25 },
+			},	
+		})
+
+		minetest.register_craft( {
+			type = "shapeless",
+			output = "flowers:flower_"..flower.."_pot",
+			recipe = {
+				"flowers:flower_pot",
+				"flowers:flower_"..flower
+			}
+		})
+
+		spawn_on_surfaces(delay, "flowers:flower_"..flower, radius, chance, "default:dirt_with_grass", {"group:flower"}, flowers_seed_diff)
+	end
+
+	minetest.register_node(":flowers:flower_waterlily", {
+		description = "Waterlily",
+		drawtype = "raillike",
+		tiles = { "flower_waterlily.png" },
+		inventory_image = "flower_waterlily.png",
+		wield_image  = "flower_waterlily.png",
+		sunlight_propagates = true,
+		paramtype = "light",
+		paramtype2 = "wallmounted",
+		walkable = false,
+		groups = { snappy = 3,flammable=2,flower=1 },
+		sounds = default.node_sound_leaves_defaults(),
+		selection_box = {
+			type = "fixed",
+			fixed = { -0.4, -0.5, -0.4, 0.4, -0.45, 0.4 },
+		},	
+	})
+
+	minetest.register_node(":flowers:flower_seaweed", {
+		description = "Seaweed",
+		drawtype = "signlike",
+		tiles = { "flower_seaweed.png" },
+		inventory_image = "flower_seaweed.png",
+		wield_image  = "flower_seaweed.png",
+		sunlight_propagates = true,
+		paramtype = "light",
+		paramtype2 = "wallmounted",
+		walkable = false,
+		groups = { snappy = 3,flammable=2,flower=1 },
+		sounds = default.node_sound_leaves_defaults(),
+		selection_box = {
+			type = "fixed",
+			fixed = { -0.5, -0.5, -0.5, 0.5, -0.4, 0.5 },
+		},	
+	})
+
+	spawn_on_surfaces(spawn_delay/2, "flowers:flower_waterlily", 15  , spawn_chance*3, "default:water_source"   , {"group:flower"}, flowers_seed_diff, 10)
+	spawn_on_surfaces(spawn_delay*2, "flowers:flower_seaweed"  ,  0.1, spawn_chance*2, "default:water_source"   , {"group:flower"}, flowers_seed_diff,  4, 10, {"default:dirt_with_grass"}, 0)
+	spawn_on_surfaces(spawn_delay*2, "flowers:flower_seaweed"  ,  0.1, spawn_chance*2, "default:dirt_with_grass", {"group:flower"}, flowers_seed_diff,  4, 10, {"default:water_source"}   , 1)
+	spawn_on_surfaces(spawn_delay*2, "flowers:flower_seaweed"  ,  0.1, spawn_chance*2, "default:stone"          , {"group:flower"}, flowers_seed_diff,  4, 10, {"default:water_source"}   , 6)
+
+
+	minetest.register_craftitem(":flowers:flower_pot", {
+		description = "Flower Pot",
+		inventory_image = "flower_pot.png",
+	})
+
+	minetest.register_craft( {
+		output = "flowers:flower_pot",
+		recipe = {
+		        { "default:clay_brick", "", "default:clay_brick" },
+		        { "", "default:clay_brick", "" }
+		},
+	})
+
+	minetest.register_craftitem(":flowers:cotton", {
+	    description = "Cotton",
+	    image = "cotton.png",
+	})
+
+	minetest.register_craft({
+	    output = "flowers:cotton 3",
+	    recipe ={
+		{"flowers:flower_cotton"},
+	    }
+	})	
+
+end
+
+-- ###########################################################################
+-- Jungle Grass section
+
+if enable_junglegrass then
+	loadstr = loadstr.." junglegrass"
+
+	minetest.register_node(':junglegrass:medium', {
+		description = "Jungle Grass (medium height)",
+		drawtype = 'plantlike',
+		tile_images = { 'junglegrass_medium.png' },
+		inventory_image = 'junglegrass_medium.png',
+		wield_image = 'junglegrass_medium.png',
+		sunlight_propagates = true,
+		paramtype = 'light',
+		walkable = false,
+		groups = { snappy = 3, flammable=2, junglegrass=1 },
+		sounds = default.node_sound_leaves_defaults(),
+		drop = 'default:junglegrass',
+
+		selection_box = {
+			type = "fixed",
+			fixed = {-0.4, -0.5, -0.4, 0.4, 0.5, 0.4},
+		},
+	})
+
+	minetest.register_node(':junglegrass:short', {
+		description = "Jungle Grass (short)",
+		drawtype = 'plantlike',
+		tile_images = { 'junglegrass_short.png' },
+		inventory_image = 'junglegrass_short.png',
+		wield_image = 'junglegrass_short.png',
+		sunlight_propagates = true,
+		paramtype = 'light',
+		walkable = false,
+		groups = { snappy = 3, flammable=2, junglegrass=1 },
+		sounds = default.node_sound_leaves_defaults(),
+		drop = 'default:junglegrass',
+		selection_box = {
+			type = "fixed",
+			fixed = {-0.4, -0.5, -0.4, 0.4, 0.3, 0.4},
+		},
+	})
+
+	minetest.register_node(':junglegrass:shortest', {
+		description = "Jungle Grass (very short)",
+		drawtype = 'plantlike',
+		tile_images = { 'junglegrass_shortest.png' },
+		inventory_image = 'junglegrass_shortest.png',
+		wield_image = 'junglegrass_shortest.png',
+		sunlight_propagates = true,
+		paramtype = 'light',
+		walkable = false,
+		groups = { snappy = 3, flammable=2, junglegrass=1 },
+		sounds = default.node_sound_leaves_defaults(),
+		drop = 'default:junglegrass',
+		selection_box = {
+			type = "fixed",
+			fixed = {-0.3, -0.5, -0.3, 0.3, 0, 0.3},
+		},
+	})
+
+	spawn_on_surfaces(spawn_delay*2, "junglegrass:shortest", 4, spawn_chance/50, "default:dirt_with_grass", {"group:junglegrass", "default:junglegrass", "default:dry_shrub"}, junglegrass_seed_diff, 5)
+	spawn_on_surfaces(spawn_delay*2, "junglegrass:shortest", 4, spawn_chance/50, "default:sand"           , {"group:junglegrass", "default:junglegrass", "default:dry_shrub"}, junglegrass_seed_diff, 5)
+	spawn_on_surfaces(spawn_delay*2, "junglegrass:shortest", 4, spawn_chance/10, "default:desert_sand"    , {"group:junglegrass", "default:junglegrass", "default:dry_shrub"}, junglegrass_seed_diff, 5)
+	spawn_on_surfaces(spawn_delay*2, "junglegrass:shortest", 4, spawn_chance/10, "default:desert_sand"    , {"group:junglegrass", "default:junglegrass", "default:dry_shrub"}, junglegrass_seed_diff, 5)
+
+	for i in ipairs(grasses_list) do
+		grow_plants(grow_delay, grow_chance/2, grasses_list[i][1], grasses_list[i][2], "default:desert_sand", {"default:cactus", "default:papyrus"})
+	end		
+end
+
+-- ###########################################################################
+-- Poison Ivy section
+
+if enable_poisonivy then
+	loadstr = loadstr.." poisonivy"
+
+	minetest.register_node(':poisonivy:seedling', {
+		description = "Poison ivy (seedling)",
+		drawtype = 'plantlike',
+		tile_images = { 'poisonivy_seedling.png' },
+		inventory_image = 'poisonivy_seedling.png',
+		wield_image = 'poisonivy_seedling.png',
+		sunlight_propagates = true,
+		paramtype = 'light',
+		walkable = false,
+		groups = { snappy = 3, poisonivy=1 },
+		sounds = default.node_sound_leaves_defaults(),
+	})
+
+	minetest.register_node(':poisonivy:sproutling', {
+		description = "Poison ivy (sproutling)",
+		drawtype = 'plantlike',
+		tile_images = { 'poisonivy_sproutling.png' },
+		inventory_image = 'poisonivy_sproutling.png',
+		wield_image = 'poisonivy_sproutling.png',
+		sunlight_propagates = true,
+		paramtype = 'light',
+		walkable = false,
+		groups = { snappy = 3, poisonivy=1 },
+		sounds = default.node_sound_leaves_defaults(),
+	})
+
+	minetest.register_node(':poisonivy:climbing', {
+		description = "Poison ivy (climbing plant)",
+		drawtype = 'signlike',
+		tile_images = { 'poisonivy_climbing.png' },
+		inventory_image = 'poisonivy_climbing.png',
+		wield_image = 'poisonivy_climbing.png',
+		sunlight_propagates = true,
+		paramtype = 'light',
+		paramtype2 = 'wallmounted',
+		walkable = false,
+		groups = { snappy = 3, poisonivy=1 },
+		sounds = default.node_sound_leaves_defaults(),
+		selection_box = {
+			type = "wallmounted",
+			--wall_side = = <default>
+		},
+	})
+
+	spawn_on_surfaces(spawn_delay, "poisonivy:seedling", 10 , spawn_chance/10, "default:dirt_with_grass", {"group:poisonivy","group:flower"}, poisonivy_seed_diff, 7)
+	grow_plants(spawn_delay, grow_chance, "poisonivy:seedling", "poisonivy:sproutling")
+	grow_plants(spawn_delay, grow_chance*2, "poisonivy:climbing")
+end
+
+print(loadstr..")")