mirror of
https://github.com/sys4-fr/server-nalc.git
synced 2024-12-27 03:00:38 +01:00
335 lines
9.1 KiB
Lua
Executable File
335 lines
9.1 KiB
Lua
Executable File
local max_entity_id = 1000000000000 -- If you need more, there's a problem with your code
|
|
|
|
luaentity = {}
|
|
|
|
luaentity.registered_entities = {}
|
|
|
|
local filename = minetest.get_worldpath().."/luaentities"
|
|
local function read_file()
|
|
local f = io.open(filename, "r")
|
|
if f == nil then return {} end
|
|
local t = f:read("*all")
|
|
f:close()
|
|
if t == "" or t == nil then return {} end
|
|
return minetest.deserialize(t)
|
|
end
|
|
|
|
local function write_file(tbl)
|
|
local f = io.open(filename, "w")
|
|
f:write(minetest.serialize(tbl))
|
|
f:close()
|
|
end
|
|
|
|
local function read_entities()
|
|
local t = read_file()
|
|
for _, entity in pairs(t) do
|
|
setmetatable(entity, luaentity.registered_entities[entity.name])
|
|
end
|
|
return t
|
|
end
|
|
|
|
local function write_entities()
|
|
for _, entity in pairs(luaentity.entities) do
|
|
setmetatable(entity, nil)
|
|
for _, attached in pairs(entity._attached_entities) do
|
|
if attached.entity then
|
|
attached.entity:remove()
|
|
attached.entity = nil
|
|
end
|
|
end
|
|
entity._attached_entities_master = nil
|
|
end
|
|
write_file(luaentity.entities)
|
|
end
|
|
|
|
minetest.register_on_shutdown(write_entities)
|
|
luaentity.entities_index = 0
|
|
|
|
local function get_blockpos(pos)
|
|
return {x = math.floor(pos.x / 16),
|
|
y = math.floor(pos.y / 16),
|
|
z = math.floor(pos.z / 16)}
|
|
end
|
|
|
|
local active_blocks = {} -- These only contain active blocks near players (i.e., not forceloaded ones)
|
|
local handle_active_blocks_step = 2
|
|
local handle_active_blocks_timer = 0
|
|
minetest.register_globalstep(function(dtime)
|
|
handle_active_blocks_timer = handle_active_blocks_timer + dtime
|
|
if handle_active_blocks_timer >= handle_active_blocks_step then
|
|
handle_active_blocks_timer = handle_active_blocks_timer - handle_active_blocks_step
|
|
local active_block_range = tonumber(minetest.setting_get("active_block_range")) or 2
|
|
local new_active_blocks = {}
|
|
for _, player in ipairs(minetest.get_connected_players()) do
|
|
local blockpos = get_blockpos(player:getpos())
|
|
local minp = vector.subtract(blockpos, active_block_range)
|
|
local maxp = vector.add(blockpos, active_block_range)
|
|
|
|
for x = minp.x, maxp.x do
|
|
for y = minp.y, maxp.y do
|
|
for z = minp.z, maxp.z do
|
|
local pos = {x = x, y = y, z = z}
|
|
new_active_blocks[minetest.hash_node_position(pos)] = pos
|
|
end
|
|
end
|
|
end
|
|
end
|
|
active_blocks = new_active_blocks
|
|
-- todo: callbacks on block load/unload
|
|
end
|
|
end)
|
|
|
|
local function is_active(pos)
|
|
return active_blocks[minetest.hash_node_position(get_blockpos(pos))] ~= nil
|
|
end
|
|
|
|
local entitydef_default = {
|
|
_attach = function(self, attached, attach_to)
|
|
local attached_def = self._attached_entities[attached]
|
|
local attach_to_def = self._attached_entities[attach_to]
|
|
attached_def.entity:set_attach(
|
|
attach_to_def.entity, "",
|
|
vector.subtract(attached_def.offset, attach_to_def.offset), -- todo: Does not work because is object space
|
|
vector.new(0, 0, 0)
|
|
)
|
|
end,
|
|
_set_master = function(self, index)
|
|
self._attached_entities_master = index
|
|
if not index then
|
|
return
|
|
end
|
|
local def = self._attached_entities[index]
|
|
if not def.entity then
|
|
return
|
|
end
|
|
def.entity:setpos(vector.add(self._pos, def.offset))
|
|
def.entity:setvelocity(self._velocity)
|
|
def.entity:setacceleration(self._acceleration)
|
|
end,
|
|
_attach_all = function(self)
|
|
local master = self._attached_entities_master
|
|
if not master then
|
|
return
|
|
end
|
|
for id, entity in pairs(self._attached_entities) do
|
|
if id ~= master and entity.entity then
|
|
self:_attach(id, master)
|
|
end
|
|
end
|
|
end,
|
|
_detach_all = function(self)
|
|
local master = self._attached_entities_master
|
|
for id, entity in pairs(self._attached_entities) do
|
|
if id ~= master and entity.entity then
|
|
entity.entity:set_detach()
|
|
end
|
|
end
|
|
end,
|
|
_add_attached = function(self, index)
|
|
local entity = self._attached_entities[index]
|
|
if entity.entity then
|
|
return
|
|
end
|
|
local entity_pos = vector.add(self._pos, entity.offset)
|
|
if not is_active(entity_pos) then
|
|
return
|
|
end
|
|
local ent = minetest.add_entity(entity_pos, entity.name):get_luaentity()
|
|
ent:from_data(entity.data)
|
|
ent.parent_id = self._id
|
|
ent.attached_id = index
|
|
entity.entity = ent.object
|
|
local master = self._attached_entities_master
|
|
if master then
|
|
self:_attach(index, master)
|
|
else
|
|
self:_set_master(index)
|
|
end
|
|
end,
|
|
_remove_attached = function(self, index)
|
|
local master = self._attached_entities_master
|
|
local entity = self._attached_entities[index]
|
|
local ent = entity.entity
|
|
entity.entity = nil
|
|
if index == master then
|
|
self:_detach_all()
|
|
local newmaster
|
|
for id, attached in pairs(self._attached_entities) do
|
|
if id ~= master and attached.entity then
|
|
newmaster = id
|
|
break
|
|
end
|
|
end
|
|
self:_set_master(newmaster)
|
|
self:_attach_all()
|
|
elseif master and ent then
|
|
ent:set_detach()
|
|
end
|
|
if ent then
|
|
ent:remove()
|
|
end
|
|
end,
|
|
_add_loaded = function(self)
|
|
for id, _ in pairs(self._attached_entities) do
|
|
self:_add_attached(id)
|
|
end
|
|
end,
|
|
getid = function(self)
|
|
return self._id
|
|
end,
|
|
getpos = function(self)
|
|
return vector.new(self._pos)
|
|
end,
|
|
setpos = function(self, pos)
|
|
self._pos = vector.new(pos)
|
|
--for _, entity in pairs(self._attached_entities) do
|
|
-- if entity.entity then
|
|
-- entity.entity:setpos(vector.add(self._pos, entity.offset))
|
|
-- end
|
|
--end
|
|
local master = self._attached_entities_master
|
|
if master then
|
|
local master_def = self._attached_entities[master]
|
|
master_def.entity:setpos(vector.add(self._pos, master_def.offset))
|
|
end
|
|
end,
|
|
getvelocity = function(self)
|
|
return vector.new(self._velocity)
|
|
end,
|
|
setvelocity = function(self, velocity)
|
|
self._velocity = vector.new(velocity)
|
|
local master = self._attached_entities_master
|
|
if master then
|
|
self._attached_entities[master].entity:setvelocity(self._velocity)
|
|
end
|
|
end,
|
|
getacceleration = function(self)
|
|
return vector.new(self._acceleration)
|
|
end,
|
|
setacceleration = function(self, acceleration)
|
|
self._acceleration = vector.new(acceleration)
|
|
local master = self._attached_entities_master
|
|
if master then
|
|
self._attached_entities[master].entity:setacceleration(self._acceleration)
|
|
end
|
|
end,
|
|
remove = function(self)
|
|
self:_detach_all()
|
|
for _, entity in pairs(self._attached_entities) do
|
|
if entity.entity then
|
|
entity.entity:remove()
|
|
end
|
|
end
|
|
luaentity.entities[self._id] = nil
|
|
end,
|
|
add_attached_entity = function(self, name, data, offset)
|
|
local index = #self._attached_entities + 1
|
|
self._attached_entities[index] = {
|
|
name = name,
|
|
data = data,
|
|
offset = vector.new(offset),
|
|
}
|
|
self:_add_attached(index)
|
|
return index
|
|
end,
|
|
remove_attached_entity = function(self, index)
|
|
self:_remove_attached(index)
|
|
self._attached_entities[index] = nil
|
|
end,
|
|
}
|
|
|
|
function luaentity.register_entity(name, prototype)
|
|
-- name = check_modname_prefix(name)
|
|
prototype.name = name
|
|
setmetatable(prototype, {__index = entitydef_default})
|
|
prototype.__index = prototype -- Make it possible to use it as metatable
|
|
luaentity.registered_entities[name] = prototype
|
|
end
|
|
|
|
-- function luaentity.get_entity_definition(entity)
|
|
-- return luaentity.registered_entities[entity.name]
|
|
-- end
|
|
|
|
function luaentity.add_entity(pos, name)
|
|
local index = luaentity.entities_index
|
|
while luaentity.entities[index] do
|
|
index = index + 1
|
|
if index >= max_entity_id then
|
|
index = 0
|
|
end
|
|
end
|
|
luaentity.entities_index = index
|
|
|
|
local entity = {
|
|
name = name,
|
|
_id = index,
|
|
_pos = vector.new(pos),
|
|
_velocity = {x = 0, y = 0, z = 0},
|
|
_acceleration = {x = 0, y = 0, z = 0},
|
|
_attached_entities = {},
|
|
}
|
|
|
|
local prototype = luaentity.registered_entities[name]
|
|
setmetatable(entity, prototype) -- Default to prototype for other methods
|
|
luaentity.entities[index] = entity
|
|
|
|
if entity.on_activate then
|
|
entity:on_activate()
|
|
end
|
|
return entity
|
|
end
|
|
|
|
-- todo: check if remove in get_staticdata works
|
|
function luaentity.get_staticdata(self)
|
|
local parent = luaentity.entities[self.parent_id]
|
|
if parent and parent._remove_attached then
|
|
parent:_remove_attached(self.attached_id)
|
|
end
|
|
return "toremove"
|
|
end
|
|
|
|
function luaentity.on_activate(self, staticdata)
|
|
if staticdata == "toremove" then
|
|
self.object:remove()
|
|
end
|
|
end
|
|
|
|
function luaentity.get_objects_inside_radius(pos, radius)
|
|
local objects = {}
|
|
local index = 1
|
|
for id, entity in pairs(luaentity.entities) do
|
|
if vector.distance(pos, entity:getpos()) <= radius then
|
|
objects[index] = entity
|
|
index = index + 1
|
|
end
|
|
end
|
|
end
|
|
|
|
minetest.register_globalstep(function(dtime)
|
|
if not luaentity.entities then
|
|
luaentity.entities = read_entities()
|
|
end
|
|
for id, entity in pairs(luaentity.entities) do
|
|
local master = entity._attached_entities_master
|
|
if master then
|
|
local master_def = entity._attached_entities[master]
|
|
local master_entity = master_def.entity
|
|
entity._pos = vector.subtract(master_entity:getpos(), master_def.offset)
|
|
entity._velocity = master_entity:getvelocity()
|
|
entity._acceleration = master_entity:getacceleration()
|
|
else
|
|
entity._pos = vector.add(vector.add(
|
|
entity._pos,
|
|
vector.multiply(entity._velocity, dtime)),
|
|
vector.multiply(entity._acceleration, 0.5 * dtime * dtime))
|
|
entity._velocity = vector.add(
|
|
entity._velocity,
|
|
vector.multiply(entity._acceleration, dtime))
|
|
end
|
|
entity:_add_loaded()
|
|
if entity.on_step then
|
|
entity:on_step(dtime)
|
|
end
|
|
end
|
|
end)
|