74 lines
2.3 KiB
Elixir
74 lines
2.3 KiB
Elixir
# Amethyst - An experimental Minecraft server written in Elixir.
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# Copyright (C) 2024 KodiCraft
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as
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# published by the Free Software Foundation, either version 3 of the
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# License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <https://www.gnu.org/licenses/>.
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defmodule Amethyst.BlockRegistry do
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use GenServer
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@moduledoc """
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GenServer which can be populated with block states and their corresponding IDs.
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It can be queried by block identifier and state to get the corresponding ID.
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"""
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require Logger
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def start_link(map) do
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GenServer.start_link(__MODULE__, map)
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end
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def init(map) do
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{:ok, map}
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end
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def handle_cast({:add, id, bs, bsi}, state) do
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state = Map.put_new(state, id, %{})
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state = Map.put(state, id, Map.put(state[id], bs, bsi))
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{:noreply, state}
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end
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def handle_call({:get, id, bs}, _from, state) do
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case Map.get(state, id) do
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nil -> {:reply, nil, state}
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block_states -> {:reply, Map.get(block_states, bs), state}
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end
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end
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def handle_call(:debug, _from, state) do
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Logger.debug("BlockRegistry state: #{inspect(state)}")
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{:reply, :ok, state}
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end
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@doc """
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Adds a block state to the registry.
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## Parameters
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- `id` - The block identifier
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- `bs` - The block state
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- `bsi` - The block state ID
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"""
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@spec add(String.t(), map(), integer()) :: :ok
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def add(id, bs, bsi) do
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GenServer.cast({:via, PartitionSupervisor, {__MODULE__, id}}, {:add, id, bs, bsi})
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end
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@doc """
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Gets the block state ID for a given block identifier and block state.
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- `id` - The block identifier
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- `bs` - The block state, nil if the block has no states
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"""
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@spec get(String.t(), map() | nil) :: integer() | nil
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def get(id, bs \\ %{}) do
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GenServer.call({:via, PartitionSupervisor, {__MODULE__, id}}, {:get, id, bs})
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end
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end
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