advanced_npc/actions/places.lua

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-- Places code for Advanced NPC by Zorman2000
---------------------------------------------------------------------------------------
-- Places functionality
---------------------------------------------------------------------------------------
-- In addition, the NPCs need to know where some places are, and know
-- where there are nodes they can use. For example, they need to know where the
-- chest they use is located, both to walk to it and to use it. They also need
-- to know where the farm they work is located, or where the bed they sleep is.
-- Other mods have to be supported for this to work correctly, as there are
-- many sitting nodes, many beds, many tables, chests, etc. For now, by default,
-- support for default and cottages is going to be provided.
npc.places = {}
npc.places.nodes = {
BEDS = {
"beds:bed_bottom",
"beds:fancy_bed_bottom"
},
SITTABLE = {
"cottages:bench"
},
CHESTS = {
"default:chest",
"default:chest_locked"
}
}
npc.places.PLACE_TYPE = {
"OWN_BED",
"OWN_CHEST",
"HOUSE_CHAIR",
"HOUSE_TABLE",
"HOUSE_FURNACE",
"HOUSE_ENTRANCE"
}
function npc.places.add_public(self, place_name, place_type, pos)
self.places_map[place_name] = {type=place_type, pos=pos}
end
-- Adds a specific node to the NPC places, and modifies the
-- node metadata to identify the NPC as the owner. This allows
-- other NPCs to avoid to take this as their own.
function npc.places.add_owned(self, place_name, place_type, pos)
-- Get node metadata
local meta = minetest.get_meta(pos)
-- Check if it is owned by an NPC?
if meta:get_string("npc_owner") == "" then
-- Set owned by NPC
meta:set_string("npc_owner", self.npc_id)
-- Add place to list
npc.places.add_public(self, place_name, place_type, pos)
return true
end
return false
end
function npc.places.get_by_type(self, place_type)
local result = {}
for place_name, place_entry in pairs(self.places_map) do
if place_entry.type == place_type then
table.insert(result, place_name)
end
end
return result
end
-- This function searches on a squared are of the given radius
-- for nodes of the given type. The type should be npc.places.nodes
function npc.places.find_node_nearby(self, type, radius)
-- Get current pos
local current_pos = self.object:getpos()
-- Determine area points
local start_pos = {x=current_pos.x - radius, y=current_pos.y - 1, z=current_pos.z - radius}
local end_pos = {x=current_pos.x + radius, y=current_pos.y + 1, z=current_pos.z + radius}
-- Get nodes
local nodes = minetest.find_nodes_in_area(start_pos, end_pos, type)
return nodes
end
-- TODO: This function can be improved to support a radius greater than 1.
function npc.places.find_node_orthogonally(pos, nodes, y_adjustment)
-- Calculate orthogonal points
local points = {}
table.insert(points, {x=pos.x+1,y=pos.y+y_adjustment,z=pos.z})
table.insert(points, {x=pos.x-1,y=pos.y+y_adjustment,z=pos.z})
table.insert(points, {x=pos.x,y=pos.y+y_adjustment,z=pos.z+1})
table.insert(points, {x=pos.x,y=pos.y+y_adjustment,z=pos.z-1})
local result = {}
for _,point in pairs(points) do
local node = minetest.get_node(point)
minetest.log("Found node: "..dump(node)..", at pos: "..dump(point))
for _,node_name in pairs(nodes) do
if node.name == node_name then
table.insert(result, {name=node.name, pos=point, param2=node.param2})
end
end
end
return result
end
function npc.places.find_node_in_area(start_pos, end_pos, type)
local nodes = minetest.find_nodes_in_area(start_pos, end_pos, type)
return nodes
end