Use Option instead of Result where applicable
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parent
5d3138ed2d
commit
8c8f954bbe
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@ -3,7 +3,7 @@ use std::str::FromStr;
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use anyhow::{anyhow, Result};
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use clap::Clap;
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use log::{debug, info, trace};
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use log::{debug, info, trace, warn};
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use crate::ddr::ssq;
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use crate::osu::beatmap;
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@ -142,25 +142,25 @@ impl ShockStepGenerator {
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}
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}
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fn get_time_from_beats(beats: f32, tempo_changes: &[ssq::TempoChange]) -> Result<i32> {
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fn get_time_from_beats(beats: f32, tempo_changes: &[ssq::TempoChange]) -> Option<i32> {
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for tempo_change in tempo_changes {
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// For TempoChanges that are infinitely short but exactly cover that beat, use the start
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// time of that TempoChange
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if (beats - tempo_change.start_beats).abs() < 0.001
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&& (beats - tempo_change.end_beats).abs() < 0.001
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{
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return Ok(tempo_change.start_ms);
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return Some(tempo_change.start_ms);
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}
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if beats < tempo_change.end_beats {
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return Ok(tempo_change.start_ms
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+ ((beats - tempo_change.start_beats) * tempo_change.beat_length) as i32);
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return Some(
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tempo_change.start_ms
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+ ((beats - tempo_change.start_beats) * tempo_change.beat_length) as i32,
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);
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}
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}
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Err(anyhow!(
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"Conversion of Step to HitObject failed: Beat lies outside of TimingPoints range"
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))
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None
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}
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impl From<ssq::TempoChange> for beatmap::TimingPoint {
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@ -191,69 +191,93 @@ impl ssq::Step {
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num_columns: u8,
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tempo_changes: &ssq::TempoChanges,
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shock_step_generator: &mut ShockStepGenerator,
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) -> Result<Vec<beatmap::HitObject>> {
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) -> Option<Vec<beatmap::HitObject>> {
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let mut hit_objects = Vec::new();
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match self {
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ssq::Step::Step { beats, row } => {
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let time = get_time_from_beats(*beats, &tempo_changes.0)?;
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let time = get_time_from_beats(*beats, &tempo_changes.0);
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let columns: Vec<bool> = row.clone().into();
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match time {
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Some(time) => {
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let columns: Vec<bool> = row.clone().into();
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for (column, active) in columns.iter().enumerate() {
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if *active {
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hit_objects.push(beatmap::HitObject::HitCircle {
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x: beatmap::column_to_x(column as u8, num_columns),
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y: 192,
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time,
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hit_sound: beatmap::HitSound {
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normal: true,
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whistle: false,
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finish: false,
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clap: false,
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},
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new_combo: false,
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skip_combo_colours: 0,
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hit_sample: beatmap::HitSample {
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normal_set: 0,
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addition_set: 0,
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index: 0,
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volume: 0,
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filename: "".to_string(),
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},
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})
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for (column, active) in columns.iter().enumerate() {
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if *active {
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hit_objects.push(beatmap::HitObject::HitCircle {
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x: beatmap::column_to_x(column as u8, num_columns),
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y: 192,
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time,
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hit_sound: beatmap::HitSound {
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normal: true,
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whistle: false,
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finish: false,
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clap: false,
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},
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new_combo: false,
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skip_combo_colours: 0,
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hit_sample: beatmap::HitSample {
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normal_set: 0,
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addition_set: 0,
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index: 0,
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volume: 0,
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filename: "".to_string(),
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},
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})
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}
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}
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}
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None => {
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warn!("Could not get start time of step, skipping");
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return None;
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}
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}
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}
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ssq::Step::Freeze { start, end, row } => {
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let time = get_time_from_beats(*start, &tempo_changes.0)?;
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let end_time = get_time_from_beats(*end, &tempo_changes.0)?;
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let time = get_time_from_beats(*start, &tempo_changes.0);
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let end_time = get_time_from_beats(*end, &tempo_changes.0);
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let columns: Vec<bool> = row.clone().into();
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match (time, end_time) {
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(Some(time), Some(end_time)) => {
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let columns: Vec<bool> = row.clone().into();
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for (column, active) in columns.iter().enumerate() {
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if *active {
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hit_objects.push(beatmap::HitObject::Hold {
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column: column as u8,
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columns: num_columns,
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time,
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end_time,
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hit_sound: beatmap::HitSound {
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normal: true,
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whistle: false,
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finish: true,
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clap: false,
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},
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new_combo: false,
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skip_combo_colours: 0,
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hit_sample: beatmap::HitSample {
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normal_set: 0,
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addition_set: 0,
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index: 0,
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volume: 0,
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filename: "".to_string(),
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},
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})
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for (column, active) in columns.iter().enumerate() {
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if *active {
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hit_objects.push(beatmap::HitObject::Hold {
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column: column as u8,
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columns: num_columns,
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time,
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end_time,
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hit_sound: beatmap::HitSound {
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normal: true,
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whistle: false,
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finish: true,
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clap: false,
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},
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new_combo: false,
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skip_combo_colours: 0,
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hit_sample: beatmap::HitSample {
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normal_set: 0,
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addition_set: 0,
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index: 0,
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volume: 0,
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filename: "".to_string(),
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},
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})
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}
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}
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}
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(None, Some(_)) => {
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warn!("Could not get start time of freeze, skipping");
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return None;
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}
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(Some(_), None) => {
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warn!("Could not get end time of freeze, skipping");
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return None;
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}
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(None, None) => {
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warn!("Could not get start and end time of freeze, skipping");
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return None;
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}
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}
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}
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@ -288,7 +312,7 @@ impl ssq::Step {
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}
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}
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Ok(hit_objects)
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Some(hit_objects)
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}
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}
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@ -363,12 +387,13 @@ impl ssq::SSQ {
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ShockStepGenerator::new(chart.difficulty.players * 4, config.shock_action.clone());
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for step in &chart.steps.0 {
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trace!("Converting {:?} to hit object", step);
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let mut step_hit_objects = step.to_hit_objects(
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if let Some(mut step_hit_objects) = step.to_hit_objects(
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chart.difficulty.players * 4,
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&self.tempo_changes,
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&mut shock_step_generator,
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)?;
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hit_objects.0.append(&mut step_hit_objects);
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) {
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hit_objects.0.append(&mut step_hit_objects);
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}
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}
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let converted_chart = ConvertedChart {
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@ -1,7 +1,7 @@
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use std::convert::From;
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use std::fmt;
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use anyhow::{anyhow, Result};
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use anyhow::Result;
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use log::{debug, info, trace, warn};
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use nom::bytes::complete::take;
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use nom::multi::many0;
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@ -126,27 +126,29 @@ impl Steps {
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continue;
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}
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let last_step = match Self::find_last(Self(parsed_steps.clone()), &row) {
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Ok(last_step) => last_step,
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Err(err) => {
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warn!("Could not add freeze arrow: {}; adding normal step", err);
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parsed_steps.push(Step::Step { beats, row });
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continue;
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}
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};
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if FREEZE {
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parsed_steps.push(Step::Freeze {
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start: if let Step::Step { beats, .. } = parsed_steps[last_step] {
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beats
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} else {
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unreachable!()
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},
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end: beats,
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row,
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});
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match Self::find_last(Self(parsed_steps.clone()), &row) {
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Some(last_step) => {
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parsed_steps.push(Step::Freeze {
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start: if let Step::Step { beats, .. } = parsed_steps[last_step]
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{
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beats
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} else {
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unreachable!()
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},
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end: beats,
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row,
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});
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parsed_steps.remove(last_step);
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parsed_steps.remove(last_step);
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}
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None => {
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warn!(
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"Could not find previous step for freeze, adding normal step"
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);
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parsed_steps.push(Step::Step { beats, row });
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}
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}
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} else {
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trace!("Freeze disabled, adding normal step");
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parsed_steps.push(Step::Step { beats, row });
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@ -173,16 +175,16 @@ impl Steps {
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Ok((input, Self(parsed_steps)))
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}
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fn find_last(steps: Self, row: &Row) -> Result<usize> {
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fn find_last(steps: Self, row: &Row) -> Option<usize> {
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for i in (0..steps.0.len()).rev() {
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if let Step::Step { row: step_row, .. } = &steps.0[i] {
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if step_row.clone().intersects(row.clone()) {
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return Ok(i);
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return Some(i);
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}
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}
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}
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Err(anyhow!("No previous step found on that column"))
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None
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}
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}
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