Split the flowers/junglegrass/poisonivy components into separate folders,

leaving the plants folder as the primary API code and glue between them.  Any
of the three may be deleted to disable them if so desired.

junglegrass/depends.txt

@@ -0,0 +1 @@
+plants

junglegrass/init.lua

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+-- This file supplies jungle grass for the plantlife modpack
+
+local spawn_delay = 2000 -- 2000
+local spawn_chance = 100 -- 100
+local grow_delay = 1000 -- 1000
+local grow_chance = 10 -- 10
+
+local grasses_list = {
+        {"junglegrass:shortest","junglegrass:short" },
+        {"junglegrass:short"   ,"junglegrass:medium" },
+        {"junglegrass:medium"  ,"default:junglegrass" },
+        {"default:junglegrass" , nil}
+}
+
+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, "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*2, "default:sand"           , {"group:junglegrass", "default:junglegrass", "default:dry_shrub"}, junglegrass_seed_diff, 5)
+spawn_on_surfaces(spawn_delay*2, "junglegrass:shortest", 4, spawn_chance*3, "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*3, "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:dirt_with_grass", "default:sand", "default:desert_sand"})
+end
+
+enabled_junglegrass = true

junglegrass/junglegrass-changelog.txt

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+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.