91 lines
2.7 KiB
Rust
91 lines
2.7 KiB
Rust
use serde::{Deserialize, Serialize};
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use std::str::FromStr;
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/// Error returned when parsing a string into a [`GameMode`] fails.
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#[derive(Debug, PartialEq, Eq)]
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pub struct ParseGameModeError;
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/// Represents the various game modes a player can be in.
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#[derive(Clone, Copy, Debug, PartialEq, Eq, Serialize, Deserialize)]
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pub enum GameMode {
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/// Standard survival mode: players take damage, gather resources, and interact normally.
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Survival = 0,
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/// Creative mode: players have unlimited resources, can fly, and cannot take damage.
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Creative = 1,
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/// Adventure mode: players cannot break blocks without the proper tools.
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Adventure = 2,
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/// Spectator mode: players can fly through blocks and observe without interacting.
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Spectator = 3,
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}
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impl GameMode {
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pub const VALUES: [Self; 4] = [
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Self::Survival,
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Self::Creative,
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Self::Adventure,
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Self::Spectator,
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];
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/// Returns the display string for this game mode.
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#[must_use]
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pub const fn to_str(&self) -> &'static str {
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match self {
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Self::Survival => "Survival",
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Self::Creative => "Creative",
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Self::Adventure => "Adventure",
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Self::Spectator => "Spectator",
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}
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}
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/// Returns the lowercase name of this game mode.
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#[must_use]
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pub const fn name(&self) -> &'static str {
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match self {
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Self::Survival => "survival",
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Self::Creative => "creative",
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Self::Adventure => "adventure",
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Self::Spectator => "spectator",
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}
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}
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}
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impl TryFrom<i8> for GameMode {
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type Error = ();
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/// Attempts to convert an `i8` value into a [`GameMode`].
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///
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/// # Parameters
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/// - `value`: The numeric representation of a game mode.
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///
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/// # Returns
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/// - `Ok(GameMode)` if the value corresponds to a valid game mode:
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/// - `0` → `Survival`
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/// - `1` → `Creative`
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/// - `2` → `Adventure`
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/// - `3` → `Spectator`
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/// - `Err(())` if the value does not correspond to any valid game mode.
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fn try_from(value: i8) -> Result<Self, Self::Error> {
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match value {
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0 => Ok(Self::Survival),
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1 => Ok(Self::Creative),
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2 => Ok(Self::Adventure),
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3 => Ok(Self::Spectator),
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_ => Err(()),
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}
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}
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}
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impl FromStr for GameMode {
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type Err = ParseGameModeError;
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fn from_str(s: &str) -> Result<Self, Self::Err> {
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match s {
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"survival" => Ok(Self::Survival),
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"creative" => Ok(Self::Creative),
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"adventure" => Ok(Self::Adventure),
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"spectator" => Ok(Self::Spectator),
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_ => Err(ParseGameModeError),
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}
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}
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}
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