Develop #4

egenn · 2025-07-13T11:30:55Z

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Summary of Changes

Hello @egenn, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request primarily focuses on improving the maintainability and functionality of the music R package. The most notable change is a significant enhancement to the audio playback capabilities, allowing for proper polyphonic sound. Additionally, I've implemented widespread code formatting improvements for better readability and updated the package's documentation generation practices.

Highlights

Enhanced Polyphonic Audio Playback: The playWave function in R/play.R has been significantly improved to correctly handle polyphonic audio. Previously, it played multiple waveforms sequentially; now, it sums them before playback, enabling true simultaneous sound generation.
Code Readability and Formatting: Extensive formatting changes have been applied across R/build.R and R/play.R to improve code readability. This includes consistent indentation and line breaks for function arguments and list definitions.
Roxygen Documentation Updates: The package's Roxygen documentation has been updated to align with modern best practices, including changes to @export and @author tag placement, and the adoption of _PACKAGE for package-level documentation.
CI/CD Badge Update: The Readme.md file has been updated to reflect a change in the continuous integration service, replacing the Travis CI badge with a GitHub Actions R-CMD-check badge.

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Copilot

Pull Request Overview

This PR refactors documentation and function definitions for consistency, adds a GitHub Actions CI workflow, and updates package metadata.

Standardize roxygen styling across R scripts and break long definitions into multiline signatures
Add .github/workflows/R-CMD-check.yaml for GitHub Actions and bump RoxygenNote in DESCRIPTION
Update README badges and enhance package Rd documentation

Reviewed Changes

Copilot reviewed 7 out of 13 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
man/music-package.Rd	Add additional package alias, `\seealso`, and maintainer metadata
Readme.md	Reorder and add R-CMD-check badge
R/zzz.R	Introduce `_PACKAGE` directive and reformat startup message
R/play.R	Reformat `playWave`, `playFreq`, `playNote`, `playChord`, and `playProgression` roxygen and code
R/build.R	Reformat `buildScale`, `buildChord`, and `buildProgression` signatures
DESCRIPTION	Bump `RoxygenNote` from 7.2.1 to 7.3.2
.github/workflows/R-CMD-check.yaml	Add CI workflow for R-CMD-check

Comments suppressed due to low confidence (2)

R/build.R:60

The example call is missing an equals sign for the plot argument. It should be plot = TRUE to match the function signature.

#' buildScale("B4", "minor", descending = TRUE, play = TRUE, plot TRUE)

.github/workflows/R-CMD-check.yaml:24

The error-on value includes extra quotes and may not match the expected literal warning. It should be specified as error-on: "warning" (without the nested quotes) so that warnings fail the build.

          error-on: '"warning"'

Copilot · 2025-07-13T11:32:20Z

R/build.R

+  chord = "minor",
+  plot = TRUE,
+  play = FALSE,
+  formatNotation = TRUE,


The parameter formatNotation shadows the function of the same name. Rename the argument or the helper function to avoid a name collision that will lead to an error when calling formatNotation(.chord).

Suggested change

formatNotation = TRUE,

useFormatNotation = TRUE,

there is no name collision, but a name change is best, nevertheless

R/play.R

gemini-code-assist

Code Review

This pull request introduces formatting improvements and fixes a bug in playWave for polyphonic playback. A potential audio clipping issue in the new implementation was identified, and replacing magic numbers with more conventional return values was suggested for improved maintainability.

gemini-code-assist · 2025-07-13T11:33:02Z

R/play.R

+
+  # Combine waves
+  if (n.notes > 1) {
+    wave <- rowSums(wave)


While rowSums correctly combines the waveforms for polyphonic playback, it can lead to audio clipping if the sum of sample amplitudes exceeds the standard audio range. To prevent clipping, it's safer to average the waveforms using rowMeans(wave) to mix the signals while keeping the amplitude within a reasonable range.

wave <- rowMeans(wave)

gemini-code-assist · 2025-07-13T11:33:03Z

R/build.R

+  if (missing(root)) {
+    cat(crayon::silver$bold("Available scales:\n"))
+    cat(crayon::cyan$bold(paste(names(scaleSteps), collapse = ", ")), "\n")
+    return(invisible(9))


The function returns the magic number 9 when the root argument is missing. The purpose of this value is unclear from the code or documentation, which can be confusing. Consider returning invisible(NULL) for better clarity.

return(invisible(NULL))

gemini-code-assist · 2025-07-13T11:33:03Z

R/build.R

+  if (missing(root)) {
+    cat(crayon::silver$bold("Available chords:\n"))
+    cat(crayon::cyan$bold(paste(names(chordSteps), collapse = ", ")), "\n")
+    return(invisible(9))


Similar to buildScale, this function returns the magic number 9 when the root argument is missing. The purpose of this value is not obvious. It's recommended to return invisible(NULL) to clearly signal that the function did not perform its primary action due to missing input.

return(invisible(NULL))

egenn · 2025-07-13T11:40:06Z

* The `error-on` value includes extra quotes and may not match the expected literal `warning`. It should be specified as `error-on: "warning"` (without the nested quotes) so that warnings fail the build.

          error-on: '"warning"'

That is incorrect and leads to error:

'arg' must be NULL or a character vector

egenn added 5 commits July 13, 2025 03:51

sum waves

5353ecf

use "_PACKAGE"

68f4b26

roxygen 7.3.2 & minor formatting

a92fd73

init R CMD check workflow; error on warning

23a593f

new R CMD check badge using github actions

f2ab2a2

egenn requested a review from Copilot July 13, 2025 11:30

egenn self-assigned this Jul 13, 2025

gemini-code-assist bot reviewed Jul 13, 2025

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Copilot AI reviewed Jul 13, 2025

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gemini-code-assist bot reviewed Jul 13, 2025

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egenn added 2 commits July 13, 2025 04:34

rm extra quotes

284d4b8

unlike Copilot suggestion, "'arg' must be NULL or a character vector"

aafca85

return exit code 64 for usage

472538b

egenn merged commit 2b85d24 into master Jul 13, 2025
2 of 4 checks passed

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