118 lines
3.6 KiB
Rust
Executable File
118 lines
3.6 KiB
Rust
Executable File
use std::sync::atomic::{AtomicU8, Ordering};
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use std::sync::Arc;
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use crate::static_data::MoveData;
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use crate::{ValueIdentifiable, ValueIdentifier};
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/// A learned move is the data attached to a Pokemon for a move it has learned. It has information
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/// such as the remaining amount of users, how it has been learned, etc.
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#[derive(Debug)]
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pub struct LearnedMove {
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/// A unique identifier so we know what value this is.
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identifier: ValueIdentifier,
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/// The immutable move information of the move.
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move_data: Arc<dyn MoveData>,
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/// The maximal power points for this move.
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max_pp: u8,
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/// The amount of remaining power points. If this is 0, we can not use the move anymore.
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remaining_pp: AtomicU8,
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/// The way the move was learned.
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learn_method: MoveLearnMethod,
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}
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/// The different ways a move can be learned.
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#[derive(Copy, Clone, Debug, Default)]
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#[repr(u8)]
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pub enum MoveLearnMethod {
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/// We do not know the learn method.
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#[default]
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Unknown = 0,
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/// The move was learned through level up.
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Level = 1,
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}
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impl LearnedMove {
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/// Instantiate a new learned move.
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pub fn new(move_data: Arc<dyn MoveData>, learn_method: MoveLearnMethod) -> Self {
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let max_pp = move_data.base_usages();
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Self {
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identifier: Default::default(),
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move_data,
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max_pp,
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remaining_pp: AtomicU8::new(max_pp),
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learn_method,
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}
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}
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/// The immutable move information of the move.
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pub fn move_data(&self) -> &Arc<dyn MoveData> {
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&self.move_data
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}
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/// The maximal power points for this move.
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pub fn max_pp(&self) -> u8 {
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self.max_pp
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}
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/// The amount of remaining power points. If this is 0, we can not use the move anymore.
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pub fn remaining_pp(&self) -> u8 {
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self.remaining_pp.load(Ordering::Relaxed)
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}
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/// The way the move was learned.
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pub fn learn_method(&self) -> MoveLearnMethod {
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self.learn_method
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}
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/// Try and reduce the PP by a certain amount. If the amount is higher than the current uses,
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/// return false. Otherwise, reduce the PP, and return true.
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pub fn try_use(&self, amount: u8) -> bool {
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let res = self.remaining_pp.fetch_update(Ordering::SeqCst, Ordering::SeqCst, |x| {
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if amount > x {
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None
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} else {
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Some(x - amount)
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}
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});
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res.is_ok()
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}
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/// Set the remaining PP to the max amount of PP.
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pub fn restore_all_uses(&self) {
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self.remaining_pp.store(self.max_pp, Ordering::SeqCst);
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}
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/// Restore the remaining PP by a certain amount. Will prevent it from going above max PP.
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pub fn restore_uses(&self, mut uses: u8) {
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self.remaining_pp
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.fetch_update(Ordering::SeqCst, Ordering::SeqCst, |x| {
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if x + uses > self.max_pp {
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uses = self.max_pp - x;
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}
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Some(x + uses)
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})
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.ok();
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}
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}
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impl ValueIdentifiable for LearnedMove {
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fn value_identifier(&self) -> ValueIdentifier {
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self.identifier
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}
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}
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#[cfg(test)]
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#[allow(clippy::unwrap_used)]
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mod tests {
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use super::*;
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use crate::static_data::tests::MockMoveData;
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#[test]
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fn create_learned_move_restore_uses() {
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let mut mock = MockMoveData::new();
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mock.expect_base_usages().return_const(30);
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let data: Arc<dyn MoveData> = Arc::new(mock);
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let learned_move = LearnedMove::new(data, MoveLearnMethod::Level);
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assert!(learned_move.try_use(15));
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learned_move.restore_uses(5);
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assert_eq!(20, learned_move.remaining_pp());
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}
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}
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