API Update + new vine

- Defines biome in the vines_register function. Thus spawning.lua can be
  removed.

- Vines destroy when a nearby( 3x3 ) leave is dug. They do not drop. To gather
  vines one still has to use the shears.

- Soft depends on moretrees. Allows the overriding of the leave nodes. This is
  required for removing th vines when the leaves destruct.

- Registered a new vine named "vines:jungle" Spawns on jungle tree trunks.
  Either on the moretrees jungles and the default jungletree nodes.

- Textures for the jungle vines.

depends.txt

@@ -1,2 +1,3 @@
 default
 plants_lib
+moretrees?

functions.lua

@@ -1,8 +1,9 @@
-vines.register_vine = function( name, defs )
+vines.register_vine = function( name, defs, biome )
   --different properties for bottom and side vines.
+  local drop_node = 'vines:'..name
   local drawtype = ''
   local selection_box
-  if ( defs.is_side_vine ) then
+  if ( biome.spawn_on_side ) then
     selection_box = {
       type = "wallmounted",
     }
@@ -15,7 +16,9 @@ vines.register_vine = function( name, defs )
     drawtype = 'plantlike'
   end
 
-  minetest.register_node("vines:"..name, {
+  biome.spawn_plants = { "vines:"..name }
+
+  minetest.register_node( "vines:"..name, {
     description = defs.description,
     walkable = false,
     climbable = true,
@@ -49,7 +52,7 @@ vines.register_vine = function( name, defs )
       end
     end,
     after_dig_node = function(pos, node, oldmetadata, user)
-      vines.dig_vine( pos, node, user )
+      vines.dig_vine( pos, drop_node, user )
     end
   })
 
@@ -79,20 +82,48 @@ vines.register_vine = function( name, defs )
         minetest.remove_node( bottom )
       end
     end,
-    after_dig_node = function(pos, node, oldmetadata, user)
-      vines.dig_vine( pos, node, user )
+    after_dig_node = function( pos, node, oldmetadata, user )
+      vines.dig_vine( pos, drop_node, user )
     end
   })
+
+  plantslib:spawn_on_surfaces( biome )
+
+  local override_nodes = function( nodes, defs )
+    function override( index, registered )
+      local node = nodes[ index ]
+      if index > #nodes then return registered end
+      if minetest.registered_nodes[node] then
+        print('overiding: '..node)
+        minetest.override_item( node, defs )
+        registered[#registered+1] = node
+      end
+      override( index+1, registered )
+    end
+    override( 1, {} )
+  end
+
+  override_nodes( biome.spawn_surfaces,{
+    after_destruct = function( pos )
+      local pos_min = { x = pos.x -1, y = pos.y - 1, z = pos.z - 1 }
+      local pos_max = { x = pos.x +1, y = pos.y + 1, z = pos.z + 1 }
+      local positions = minetest.find_nodes_in_area( pos_min, pos_max, "group:vines" )
+      for index, position in pairs(positions) do
+        minetest.remove_node( position )
+      end
+    end
+  })
+
 end
 
-vines.dig_vine = function( pos, node, user )
+vines.dig_vine = function( pos, node_name, user )
   --only dig give the vine if shears are used
   if not user then return false end
   local wielded = user:get_wielded_item()
   if 'vines:shears' == wielded:get_name() then 
     local inv = user:get_inventory()
     if inv then
-      inv:add_item("main", ItemStack(node.name))
+      inv:add_item("main", ItemStack( node_name ))
     end
   end
 end

spawning.lua

@@ -1,47 +0,0 @@
-plantslib:spawn_on_surfaces({
-  avoid_nodes = {"vines:vine"},
-  avoid_radius = 5,
-  spawn_delay = 500,
-  spawn_plants = {"vines:vine"},
-  spawn_chance = 10,
-  spawn_surfaces = {"default:dirt_with_grass","default:dirt"},
-  spawn_on_bottom = true,
-  plantlife_limit = -0.9,
-})
-
-plantslib:spawn_on_surfaces({
-  avoid_nodes = {"vines:root"},
-  avoid_radius = 5,
-  spawn_delay = 500,
-  spawn_plants = {"vines:vine"},
-  spawn_chance = 10,
-  spawn_surfaces = {"default:dirt_with_grass","default:dirt"},
-  spawn_on_bottom = true,
-  plantlife_limit = -0.9,
-})
-
-plantslib:spawn_on_surfaces({
-  avoid_nodes = {"vines:vine", "vines:side"},
-  avoid_radius = 3,
-  spawn_delay = 300,
-  spawn_plants = {"vines:side"},
-  spawn_chance = 10,
-  spawn_surfaces = {}, --TODO
-  spawn_on_side = true,
-  near_nodes = {"default:jungletree"},
-  near_nodes_size = 5,
-  plantlife_limit = -0.9,
-})
-
-plantslib:spawn_on_surfaces({
-  spawn_plants = {"vines:willow"},
-  spawn_delay = 200,
-  spawn_chance = 3,
-  spawn_surfaces = {"moretrees:willow_leaves"},
-  spawn_on_side = true,
-  near_nodes = {"default:water_source"},
-  near_nodes_size = 2,
-  near_nodes_vertical = 5,
-  near_nodes_count = 1,
-  plantlife_limit = -0.9,
-})

vines.lua

@@ -1,23 +1,102 @@
-vines.register_vine( 'vine', {
-  description = "Vines",
-  is_side_vine = false,
-  average_length = 9
-})
-
 vines.register_vine( 'root', {
   description = "Roots",
-  is_side_vine = false,
-  average_length = 5
+  average_length = 9,
+},{
+  avoid_nodes = {"vines:root_rotten"},
+  avoid_radius = 5,
+  spawn_delay = 500,
+  spawn_chance = 10,
+  spawn_surfaces = {
+    "default:dirt_with_grass",
+    "default:dirt"
+  },
+  spawn_on_bottom = true,
+  plantlife_limit = -0.1,
+  temp_max = -0.6,
+  temp_min = 0.2,
+  humidity_max = -0.7,
+  humidity_min = 0.2,
+})
+
+vines.register_vine( 'vine', {
+  description = "Vines",
+  average_length = 5,
+},{
+  avoid_nodes = {"group:vines"},
+  avoid_radius = 5,
+  spawn_delay = 500,
+  spawn_chance = 100,
+  spawn_surfaces = {
+    "default:leaves",
+    "default:jungleleave",
+    "moretrees:jungetree_leaves_red",
+    "moretrees:jungetree_leaves_yellow",
+    "moretrees:jungetree_leaves_green"
+  },
+  spawn_on_bottom = true,
+  plantlife_limit = -0.9,
+  humidity_max = -1,
+  humidity_min = 0.8,
+  temp_max = -0.5,
+  temp_min = 0.3,
 })
 
 vines.register_vine( 'side', {
   description = "Vines",
-  is_side_vine = true,
-  average_length = 7
+  average_length = 7,
+},{
+  avoid_nodes = {"group:vines"},
+  avoid_radius = 5,
+  spawn_delay = 500,
+  spawn_chance = 100,
+  spawn_surfaces = {
+    "default:leaves",
+    "default:jungleleave",
+    "moretrees:jungetree_leaves_red",
+    "moretrees:jungetree_leaves_yellow",
+    "moretrees:jungetree_leaves_green"
+  },
+  spawn_on_side = true,
+  plantlife_limit = -0.9,
+  humidity_max = 1,
+  humidity_min = 0.8,
+  temp_min = 0.1,
+  temp_max = 1,
+})
+
+vines.register_vine( 'jungle', {
+  description = "Jungle Vines",
+  average_length = 7,
+},{
+  avoid_nodes = {"group:vines"},
+  avoid_radius = 5,
+  spawn_delay = 500,
+  spawn_chance = 100,
+  spawn_surfaces = {
+    "default:jungletree",
+    "moretrees:jungletree_trunk"
+  },
+  spawn_on_side = true,
+  plantlife_limit = -0.9,
+  humidity_max = 1,
+  humidity_min = 0.8,
+  temp_min = 0.1,
+  temp_max = 1,
 })
 
 vines.register_vine( 'willow', {
   description = "Willow Vines",
-  is_side_vine = true,
-  average_length = 9
+  average_length = 9,
+},{
+  avoid_nodes = {"vines:willow", "vines:willow_rotten"},
+  avoid_radius = 5,
+  spawn_delay = 500,
+  spawn_chance = 100,
+  spawn_surfaces = {"moretrees:willow_leaves"},
+  spawn_on_side = true,
+  plantlife_limit = -0.9,
+  humidity_max = 1,
+  humidity_min = 0.8,
+  temp_min = 0.1,
+  temp_max = 1,
 })