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init.lua
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init.lua
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-- snippet_npcs/init.lua
-- NPCs defined by snippets
-- Copyright (C) 2025 1F616EMO
-- SPDX-License-Identifier: LGPL-3.0-or-later
local S = core.get_translator("snippet_npcs")
dialog_redo.register_dialog_tree("snippet_npcs:not_configured", {
init = dialog_redo.elements.simple({
name = S("Error"),
avatar = "snippet_npcs_spawner.png",
text = S("This NPC is not configured. Sneak and right-click as an admin to configure."),
next = "",
}),
})
dialog_redo.register_dialog_tree("snippet_npcs:snippet_not_found", {
init = dialog_redo.elements.simple({
name = S("Error"),
avatar = "snippet_npcs_spawner.png",
text = S("The snippet is not found. Sneak and right-click as an admin to configure."),
next = "",
}),
})
dialog_redo.register_dialog_tree("snippet_npcs:admin_panel", {
init = dialog_redo.elements.choices({
name = S("Admin Panel"),
avatar = "snippet_npcs_spawner.png",
text = S("Choose one operation:"),
buttons = {
{
text = S("Set snippet"),
next = "snippet",
},
{
text = S("Set skin"),
next = "skin",
},
{
text = S("Set nametag"),
next = "nametag",
},
{
text = S("Look at me"),
next = function(session)
local player = core.get_player_by_name(session.player_name)
session.entity:_look_at(player)
return "init"
end,
},
{
text = S("Export"),
next = function(session)
local player = core.get_player_by_name(session.player_name)
local inv = player:get_inventory()
local export_item = ItemStack("snippet_npcs:spawner")
local item_meta = export_item:get_meta()
item_meta:set_string("description",
S("NPC Spawner (@1)", session.entity._snippet_name or S("Unconfigured")))
item_meta:set_string("staticdata", session.entity:get_staticdata())
inv:add_item("main", export_item)
return "init"
end,
},
{
text = S("Remove"),
next = "remove",
},
{
text = S("Exit"),
next = "",
},
},
allow_exit = true,
}),
snippet = dialog_redo.elements.textbox({
name = S("Admin Panel"),
avatar = "snippet_npcs_spawner.png",
text = S("Type the snippet name:"),
next = "init",
process_text = function(session, text)
if string.trim(text) == "" then
text = nil
end
session.entity._snippet_name = text
session.entity:_init_appearance()
end,
}),
nametag = dialog_redo.elements.textbox({
name = S("Admin Panel"),
avatar = "snippet_npcs_spawner.png",
text = S("Type the nametag:"),
next = "init",
process_text = function(session, text)
if string.trim(text) == "" then
text = nil
end
session.entity._nametag = text
session.entity:_init_appearance()
end,
}),
skin = dialog_redo.elements.textbox({
name = S("Admin Panel"),
avatar = "snippet_npcs_spawner.png",
text = S("Type the skin ID:"),
next = "init",
process_text = function(session, text)
if string.trim(text) == "" then
text = nil
end
session.entity._skinid = text
session.entity:_init_appearance()
end,
}),
remove = dialog_redo.elements.choices({
name = S("Admin Panel"),
avatar = "snippet_npcs_spawner.png",
text = S("Are you sure you want to remove this NPC?"),
buttons = {
{
text = S("Confirm"),
next = function(session)
session.entity.object:remove()
return ""
end,
},
{
text = S("Cancel"),
next = "init",
},
},
}),
})
core.register_entity("snippet_npcs:npc", {
initial_properties = {
physical = true,
collide_with_objects = false,
pointable = true,
visual = "mesh",
mesh = "skinsdb_3d_armor_character_5.b3d",
textures = {
"blank.png", -- v10
"character.1.png", -- v18
"blank.png", -- armor
"blank.png", -- wielditem
},
visual_size = { x = 1, y = 1 },
collisionbox = { -0.3, 0.0, -0.3, 0.3, 1.7, 0.3 },
},
on_rightclick = function(self, clicker)
if not (clicker and clicker.is_player and clicker:is_player()) then return end
local name = clicker:get_player_name()
local dialog
if clicker:get_player_control().sneak then
if core.check_player_privs(name, { server = true }) then
dialog = "snippet_npcs:admin_panel"
end
end
if not dialog then
if not self._snippet_name then
dialog = "snippet_npcs:not_configured"
elseif not snippets.registered_snippets[self._snippet_name] then
dialog = "snippet_npcs:snippet_not_found"
else
dialog = snippets.run(self._snippet_name)
end
end
dialog_redo.start_dialog(name, dialog, {
entity = self,
})
end,
get_staticdata = function(self)
return core.serialize({
_snippet_name = self._snippet_name,
_skinid = self._skinid,
_nametag = self._nametag,
})
end,
on_activate = function(self, staticdata_s)
local staticdata = staticdata_s and core.deserialize(staticdata_s) or {}
self._snippet_name = staticdata._snippet_name
self._skinid = staticdata._skinid
self._nametag = staticdata._nametag
self:_init_appearance()
self.object:set_armor_groups({ immortal = 1 })
end,
_init_appearance = function(self)
local skin = self._skinid and skins.get(self._skinid) or skins.get(skins.default)
local textures = {
"blank.png", -- v10
"blank.png", -- v18
"blank.png", -- armor
"blank.png", -- wielditem
}
if skin:get_meta("format") == "1.8" then
textures[2] = skin:get_texture()
else
textures[1] = skin:get_texture()
end
self.object:set_properties({
nametag = self._nametag or "",
textures = textures,
visual_size = {
x = skin:get_meta("visual_size_x") or 1,
y = skin:get_meta("visual_size_y") or 1
},
})
end,
_look_at = function(self, target)
local self_pos = self.object:get_pos()
local target_pos = target:get_pos()
local yaw = math.atan2(target_pos.z - self_pos.z, target_pos.x - self_pos.x) - (math.pi / 2)
self.object:set_yaw(yaw)
end,
})
core.register_craftitem("snippet_npcs:spawner", {
description = S("NPC Spawner"),
inventory_image = "snippet_npcs_spawner.png",
stack_max = 1,
on_place = function(itemstack, player, pointed_thing)
if not (player and player.is_player and player:is_player()) then
return itemstack
end
local name = player:get_player_name()
if not core.check_player_privs(name, { server = true }) then
core.chat_send_player(name, S("Insufficant privilege!"))
return itemstack
end
local meta = itemstack:get_meta()
local staticdata = meta:get("staticdata")
local pos = vector.add(pointed_thing.above, vector.new(0, -0.5, 0))
local entity = core.add_entity(pos, "snippet_npcs:npc", staticdata)
entity:get_luaentity():_look_at(player)
return itemstack
end,
})

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