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If I tell my npc to sit, when I exit the game and restart, it is standing (not saving). What do I need to change? thank you! -- NPC Behavior System local npc_behavior = { default_properties = { visual = "mesh", visual_size = {x=1, y=1}, use_texture_alpha = false, physical = true, collide_with_objects = false, collisionbox = {-0.3, -0.01, -0.3, 0.3, 1, 0.3}, stepheight = 1.1, fall_damage = 0, water_damage = 0, lava_damage = 0, suffocation = false, pathfinding = 1, floats = 1, animations = { idle = {start = 0, stop = 0, speed = 1}, sit = {start = 0.2, stop = 0.3, speed = 1}, lay = {start = 0.4, stop = 0.5, speed = 1}, stand_balcony = {start = 0.6, stop = 0.7, speed = 1}, lay_on_belly = {start = 0.8, stop = 0.9, speed = 1}, dance = {start = 1, stop = 1.6, speed = 1}, walk = {start = 1.8, stop = 2.4, speed = 1} } } } -- Helper functions local function is_water(node) return node and core.registered_nodes[node.name] and core.registered_nodes[node.name].groups and core.registered_nodes[node.name].groups.water end local function get_node_sound(pos, sound_type) local node = core.get_node_or_nil(pos) local def = node and core.registered_nodes[node.name] return def and def.sounds and (def.sounds[sound_type] and def.sounds[sound_type].name or def.sounds[sound_type]) end -- Generate unique ID local function generate_unique_id() return "npc_" .. minetest.get_us_time() .. "_" .. math.random(1000, 9999) end function npc_behavior.set_animation(self, anim) if not self.object then return end if self.current_animation ~= anim and self.animations[anim] then local a = self.animations[anim] self.object:set_animation({x = a.start, y = a.stop}, a.speed, 0, 0.1) self.current_animation = anim end end function npc_behavior.on_activate(self, staticdata) -- Initialize default values self.state = "walk" self.timer = 0 self.following = false self.following_player = nil self.footstep_timer = 0 self.frozen = false self.spawn_pos = vector.round(self.object:get_pos()) self.wander_target = nil self.stop_timer = 0 -- do not reset self.current_animation here; it is restored below if saved self.sidewalk_direction = 1 self.id = self.id or generate_unique_id() self.animations = npc_behavior.default_properties.animations -- Load from staticdata if available if staticdata and staticdata ~= "" then local data = minetest.deserialize(staticdata) if data then for k, v in pairs(data) do self[k] = v end end end -- Restore exact animation if it was saved if self.current_animation and self.animations[self.current_animation] then self:set_animation(self.current_animation) return end -- Set initial animation based on loaded state if self.state == "sit" then self:set_animation("sit") elseif self.state == "lay" then self:set_animation("lay") elseif self.state == "stand_balcony" then self:set_animation("stand_balcony") elseif self.state == "lay_on_belly" then self:set_animation("lay_on_belly") elseif self.state == "dance" then self:set_animation("dance") elseif self.frozen or self.state == "stopped" then self:set_animation("idle") else self:set_animation("walk") end end function npc_behavior.get_staticdata(self) return minetest.serialize({ state = self.state, frozen = self.frozen, spawn_pos = self.spawn_pos, current_animation = self.current_animation, sidewalk_direction = self.sidewalk_direction, id = self.id }) end function npc_behavior.on_rightclick(self, clicker) local player_name = clicker:get_player_name() npc_behavior.clicked_npc = self minetest.show_formspec(player_name, "terras_capixabas:npc_control_form", "size[10,8]" .. "label[0.5,0.5;NPC Control Panel]" .. "field[0.5,1.5;9,1;npc_name;Enter NPC name or part of name;]" .. "dropdown[0.5,2.8;4,1;action;Change Clothes,Follow Me,Stop Following,Wander,Freeze,Unfreeze,Teleport Here,Kill,Count Nearby,Get Position,Clone,Sit,Lay,Stand Balcony,Lay on Belly,Dance,Walk on Sidewalk;1]" .. "field[0.5,4.0;4,1;skin_name;Enter skin name (for clothes change);]" .. "field[4.5,4.0;4,1;clone_amount;Clone amount (default 1);]" .. "button[0.5,5.0;4,1;do_action;Do Action]" .. "button[4.5,5.0;4,1;show_skins;Show Available Skins]" .. "textlist[0.5,6.5;9,2;results;No action performed yet;1]" ) end minetest.register_on_player_receive_fields(function(player, formname, fields) if formname ~= "terras_capixabas:npc_control_form" then return end local player_name = player:get_player_name() local results = {} if fields.show_skins then local skins = minetest.get_dir_list(minetest.get_modpath("terras_capixabas") .. "/textures", false) or {} local skin_list = table.concat(skins, ", ") table.insert(results, "Available skins: " .. skin_list) end if fields.do_action and fields.action then local npc = npc_behavior.clicked_npc if not npc or not npc.object or not npc.object:get_luaentity() then table.insert(results, "No NPC selected or NPC no longer exists") else local luaent = npc.object:get_luaentity() local display_name = luaent.name or "unknown" if fields.action == "Change Clothes" and fields.skin_name and fields.skin_name ~= "" then local skin_name = fields.skin_name:gsub(".png$", "") local texture = skin_name .. ".png" npc.object:set_properties({textures = {texture}}) table.insert(results, display_name .. ": Changed to " .. texture) elseif fields.action == "Follow Me" then npc.following = true npc.following_player = player npc.state = "follow" npc.frozen = false npc:set_animation("walk") table.insert(results, display_name .. " is now following you") elseif fields.action == "Stop Following" then npc.following = false npc.following_player = nil npc.state = "stopped" npc.frozen = false npc:set_animation("idle") table.insert(results, display_name .. " stopped following") elseif fields.action == "Wander" then npc.following = false npc.following_player = nil npc.state = "walk" npc.frozen = false npc.wander_target = nil npc.stop_timer = 0 npc:set_animation("walk") table.insert(results, display_name .. " is now wandering") elseif fields.action == "Freeze" then npc.frozen = true npc.object:set_velocity({x=0, y=0, z=0}) table.insert(results, display_name .. " is now frozen") elseif fields.action == "Unfreeze" then npc.frozen = false table.insert(results, display_name .. " is now unfrozen") elseif fields.action == "Teleport Here" then local pos = player:get_pos() local new_pos = {x=pos.x+1, y=pos.y, z=pos.z+1} npc.object:set_pos(new_pos) npc.spawn_pos = vector.round(new_pos) table.insert(results, "Teleported " .. display_name .. " to you") elseif fields.action == "Kill" then npc.object:remove() table.insert(results, "Killed " .. display_name) elseif fields.action == "Get Position" then table.insert(results, display_name .. " at " .. minetest.pos_to_string(npc.object:get_pos())) elseif fields.action == "Clone" then local amount = tonumber(fields.clone_amount) or 1 local pos = player:get_pos() for i = 1, amount do local offset = {x = math.random(-3, 3), y = 1, z = math.random(-3, 3)} local new_pos = vector.add(pos, offset) minetest.add_entity(new_pos, luaent.name) end table.insert(results, "Cloned " .. display_name .. " " .. amount .. " times") elseif fields.action == "Sit" then npc.following = false npc.following_player = nil npc.state = "sit" npc.frozen = true npc.object:set_velocity({x=0, y=0, z=0}) npc:set_animation("sit") table.insert(results, display_name .. " is now sitting") elseif fields.action == "Lay" then npc.following = false npc.following_player = nil npc.state = "lay" npc.frozen = true npc.object:set_velocity({x=0, y=0, z=0}) npc:set_animation("lay") table.insert(results, display_name .. " is now laying down") elseif fields.action == "Stand Balcony" then npc.following = false npc.following_player = nil npc.state = "stand_balcony" npc.frozen = true npc.object:set_velocity({x=0, y=0, z=0}) npc:set_animation("stand_balcony") table.insert(results, display_name .. " is now standing on balcony") elseif fields.action == "Lay on Belly" then npc.following = false npc.following_player = nil npc.state = "lay_on_belly" npc.frozen = true npc.object:set_velocity({x=0, y=0, z=0}) npc:set_animation("lay_on_belly") table.insert(results, display_name .. " is now laying on belly") elseif fields.action == "Dance" then npc.following = false npc.following_player = nil npc.state = "dance" npc.frozen = true npc.object:set_velocity({x=0, y=0, z=0}) npc:set_animation("dance") table.insert(results, display_name .. " is now dancing") elseif fields.action == "Walk on Sidewalk" then npc.following = false npc.following_player = nil npc.state = "sidewalk" npc.frozen = false npc.sidewalk_direction = 1 npc:set_animation("walk") table.insert(results, display_name .. " is now walking on the sidewalk") elseif fields.action == "Count Nearby" then local pos = player:get_pos() local objs = minetest.get_objects_inside_radius(pos, 10) local found_npcs = {} for _, obj in ipairs(objs) do local luaent = obj:get_luaentity() if luaent and luaent.name and luaent.name:match("^terras_capixabas:") then table.insert(found_npcs, {name = luaent.name or "unknown"}) end end if #found_npcs == 0 then table.insert(results, "No NPCs found nearby") else local names = {} for _, npc in ipairs(found_npcs) do table.insert(names, npc.name) end table.insert(results, string.format("Found %d NPCs: %s", #found_npcs, table.concat(names, ", "))) end end end end if #results > 0 then local results_text = table.concat(results, ",") minetest.show_formspec(player_name, "terras_capixabas:npc_control_form", "size[10,8]" .. "label[0.5,0.5;NPC Control Panel]" .. "field[0.5,1.5;9,1;npc_name;Enter NPC name or part of name;" .. minetest.formspec_escape(fields.npc_name or "") .. "]" .. "dropdown[0.5,2.8;4,1;action;Change Clothes,Follow Me,Stop Following,Wander,Freeze,Unfreeze,Teleport Here,Kill,Count Nearby,Get Position,Clone,Sit,Lay,Stand Balcony,Lay on Belly,Dance,Walk on Sidewalk;" .. (fields.action and fields.action or "1") .. "]" .. "field[0.5,4.0;4,1;skin_name;Enter skin name (for clothes change);" .. minetest.formspec_escape(fields.skin_name or "") .. "]" .. "field[4.5,4.0;4,1;clone_amount;Clone amount (default 1);" .. minetest.formspec_escape(fields.clone_amount or "") .. "]" .. "button[0.5,5.0;4,1;do_action;Do Action]" .. "button[4.5,5.0;4,1;show_skins;Show Available Skins]" .. "textlist[0.5,6.5;9,2;results;" .. minetest.formspec_escape(results_text) .. ";1]" ) end return true end) function npc_behavior.on_step(self, dtime) if not self.object or not self.object:get_luaentity() then return end if self.state == "sit" then self.object:set_velocity({x=0, y=0, z=0}) return self:set_animation("sit") elseif self.state == "lay" then self.object:set_velocity({x=0, y=0, z=0}) return self:set_animation("lay") elseif self.state == "stand_balcony" then self.object:set_velocity({x=0, y=0, z=0}) return self:set_animation("stand_balcony") elseif self.state == "lay_on_belly" then self.object:set_velocity({x=0, y=0, z=0}) return self:set_animation("lay_on_belly") elseif self.state == "dance" then self.object:set_velocity({x=0, y=0, z=0}) return self:set_animation("dance") elseif self.frozen or self.state == "stopped" then self.object:set_velocity({x=0, y=0, z=0}) return self:set_animation("idle") end self.timer = (self.timer or 0) + dtime self.footstep_timer = (self.footstep_timer or 0) + dtime local pos = self.object:get_pos() local vel = self.object:get_velocity() local new_vel = {x=vel.x, y=vel.y, z=vel.z} local node_pos = {x=pos.x, y=pos.y+0.5, z=pos.z} local node = minetest.get_node_or_nil(node_pos) local in_water = is_water(node) local below_pos = {x=pos.x, y=pos.y - 0.1, z=pos.z} local below_node = minetest.get_node_or_nil(below_pos) local on_ground = below_node and minetest.registered_nodes[below_node.name] and minetest.registered_nodes[below_node.name].walkable if not self.object:get_attach() then new_vel.y = new_vel.y - (9.8 * dtime) if on_ground then new_vel.y = 0 if (self.state == "follow" or self.state == "walk" or self.state == "sidewalk") then local yaw = self.object:get_yaw() or 0 local front_dir = { x = math.sin(yaw) * 0.5, z = math.cos(yaw) * -0.5 } local front_pos = { x = pos.x + front_dir.x, y = pos.y, z = pos.z + front_dir.z } local front_node = minetest.get_node_or_nil(front_pos) if front_node and minetest.registered_nodes[front_node.name] and minetest.registered_nodes[front_node.name].walkable then local above_front_node = minetest.get_node_or_nil({ x = front_pos.x, y = front_pos.y + 1, z = front_pos.z }) if above_front_node and (not minetest.registered_nodes[above_front_node.name] or not minetest.registered_nodes[above_front_node.name].walkable) then new_vel.y = 5 end end end end end for _, obj in ipairs(minetest.get_objects_inside_radius({x=pos.x, y=pos.y - 0.5, z=pos.z}, 0.5)) do if not obj:is_player() and obj ~= self.object then local luaent = obj:get_luaentity() if luaent and luaent.name and luaent.name:find("^terras_capixabas:") then new_vel.y = -1 break end end end if (math.abs(new_vel.x) > 0.1 or math.abs(new_vel.z) > 0.1) and self.footstep_timer >= 0.5 then self.footstep_timer = 0 local sound = get_node_sound({x=pos.x, y=pos.y - 0.5, z=pos.z}, "footstep") if sound then minetest.sound_play(sound, {pos = pos, max_hear_distance = 10, gain = 0.4}) end end self.object:set_velocity(new_vel) if self.state == "follow" and self.following and self.following_player and self.following_player:is_player() then local player_pos = self.following_player:get_pos() local dist = vector.distance(pos, player_pos) if dist > 2 then local dir = vector.direction(pos, player_pos) local yaw = math.atan2(dir.z, dir.x) - math.pi / 2 self.object:set_yaw(yaw) dir.x, dir.z = dir.x * 2, dir.z * 2 dir.y = new_vel.y self.object:set_velocity(dir) return self:set_animation("walk") else self.object:set_velocity({x=0, y=new_vel.y, z=0}) return self:set_animation("idle") end end if self.state == "sidewalk" then local current_z = pos.z if current_z <= -447 then self.sidewalk_direction = 1 elseif current_z >= -220 then self.sidewalk_direction = -1 end local move_speed = 2 local move_dir = { x = 0, y = new_vel.y, z = move_speed * self.sidewalk_direction } local yaw = self.sidewalk_direction < 0 and math.pi or 0 self.object:set_yaw(yaw) self.object:set_velocity(move_dir) return self:set_animation("walk") end if self.state == "walk" then local dist_from_spawn = vector.distance(pos, self.spawn_pos) self.wander_reset_timer = (self.wander_reset_timer or 0) + dtime if self.wander_reset_timer >= 5 then self.wander_target = nil self.wander_reset_timer = 0 end if dist_from_spawn > 20 then local dir = vector.direction(pos, self.spawn_pos) local yaw = math.atan2(dir.z, dir.x) - math.pi / 2 self.object:set_yaw(yaw) dir.x, dir.z = dir.x * 2, dir.z * 2 dir.y = new_vel.y self.object:set_velocity(dir) self.wander_target = nil self.stop_timer = 0 self.wander_reset_timer = 0 if dist_from_spawn < 1 then self.wander_target = nil self.stop_timer = math.random(2, 5) return self:set_animation("idle") else return self:set_animation("walk") end end if (self.stop_timer or 0) > 0 then self.stop_timer = self.stop_timer - dtime self.object:set_velocity({x = 0, y = new_vel.y, z = 0}) return self:set_animation("idle") end if not self.wander_target or vector.distance(pos, self.wander_target) < 0.5 then local max_wander_dist = math.random(3, 6) local angle = math.random() * 2 * math.pi self.wander_target = vector.add(self.spawn_pos, { x = math.cos(angle) * max_wander_dist, y = 0, z = math.sin(angle) * max_wander_dist }) self.stop_timer = math.random(2, 5) self.wander_reset_timer = 0 end if self.wander_target then local dir = vector.direction(pos, self.wander_target) local yaw = math.atan2(dir.z, dir.x) - math.pi / 2 self.object:set_yaw(yaw) dir.x, dir.z = dir.x * 2, dir.z * 2 dir.y = new_vel.y self.object:set_velocity(dir) return self:set_animation("walk") else self.object:set_velocity({x = 0, y = new_vel.y, z = 0}) return self:set_animation("idle") end end end function npc_behavior.register_npc(name, texture, mesh) local def = { mesh = mesh or npc_behavior.default_properties.mesh or "npc.gltf", visual = npc_behavior.default_properties.visual, textures = {texture}, name = name:match(":(.+)$") or name, on_activate = function(self, staticdata) for k,v in pairs(npc_behavior) do if type(v) == "function" then self[k] = v end end self.animations = npc_behavior.default_properties.animations self.set_animation = npc_behavior.set_animation npc_behavior.on_activate(self, staticdata) end, on_rightclick = npc_behavior.on_rightclick, on_step = npc_behavior.on_step, get_staticdata = npc_behavior.get_staticdata } for k,v in pairs(npc_behavior.default_properties) do if not def[k] then def[k] = v end end minetest.register_entity(name, def) minetest.register_craftitem(name .. "_spawn", { description = name:match(":(.+)$") .. " Spawn Egg", inventory_image = texture:gsub(".png", "_inv.png"), on_place = function(itemstack, placer, pointed_thing) if pointed_thing.above then local new_ent = minetest.add_entity(pointed_thing.above, name) if new_ent then local new_luaent = new_ent:get_luaentity() if new_luaent then new_luaent.id = generate_unique_id() new_luaent.spawn_pos = vector.round(pointed_thing.above) new_luaent.state = "walk" new_luaent.current_animation = "walk" end end end itemstack:take_item() return itemstack end }) minetest.log("action", "[Terra's Capixabas] " .. name .. " NPC loaded!") end return npc_behavior Statistics: Posted by aloan — Fri Jul 04, 2025 12:52 * * *

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