File indexing completed on 2024-04-28 15:07:58

 /* GCompris - note_names.js
  *
  * SPDX-FileCopyrightText: 2018 Aman Kumar Gupta <gupta2140@gmail.com>
  *
  * Authors:
  *   Aman Kumar Gupta <gupta2140@gmail.com>
  *
  *   SPDX-License-Identifier: GPL-3.0-or-later
  */
 .pragma library
 .import QtQuick 2.12 as Quick
 .import "qrc:/gcompris/src/core/core.js" as Core
 
 var numberOfLevel
 var dataset
 var items
 var levels
 var targetNotes = []
 var newNotesSequence = []
 var currentNoteIndex
 var noteIndexToDisplay
 var percentageDecreaseValue = 4
 var percentageIncreaseValue = 2
 var timerNormalInterval
 
 function start(items_, timerNormalInterval_) {
     items = items_
     timerNormalInterval = timerNormalInterval_
     dataset = items.dataset.item
     levels = dataset.levels
     numberOfLevel = levels.length
     items.currentLevel = Core.getInitialLevel(numberOfLevel)
     items.doubleOctave.coloredKeyLabels = dataset.referenceNotes[levels[0]["clef"]]
     items.doubleOctave.currentOctaveNb = 1
     items.introMessage.intro = [dataset.objective]
     initLevel()
 }
 
 function stop() {
     newNotesSequence = []
     items.multipleStaff.pauseNoteAnimation()
     items.displayNoteNameTimer.stop()
     items.addNoteTimer.stop()
 }
 
 function initLevel() {
     targetNotes = []
     newNotesSequence = []
     items.background.clefType = levels[items.currentLevel]["clef"]
     items.doubleOctave.coloredKeyLabels = dataset.referenceNotes[items.background.clefType]
     if(items.background.clefType === "Treble")
         items.doubleOctave.currentOctaveNb = 1
     else
         items.doubleOctave.currentOctaveNb = 2
 
     items.multipleStaff.pauseNoteAnimation()
     items.displayNoteNameTimer.stop()
     items.addNoteTimer.stop()
     items.multipleStaff.initClefs(items.background.clefType)
     targetNotes = JSON.parse(JSON.stringify(levels[items.currentLevel]["sequence"]))
     items.isTutorialMode = true
     items.progressBar.percentage = 0
     items.multipleStaff.coloredNotes = dataset.referenceNotes[items.background.clefType]
     if(!items.iAmReady.visible  && !items.introMessage.visible)
         showTutorial()
 }
 
 function showTutorial() {
     items.messageBox.visible = false
     if(targetNotes.length) {
         displayNote(targetNotes[0])
         items.messageBox.visible = true
         targetNotes.shift()
     }
     else if (!items.iAmReady.visible) {
         items.isTutorialMode = false
         startGame()
     }
 }
 
 // The principle is to fill half sequence (length 25) with the notes from previous levels and another half with current level's target notes and shuffle them.
 function formNewNotesSequence() {
     var halfSequenceLength = 25
     var fullSequenceLength = 50
     targetNotes = JSON.parse(JSON.stringify(levels[items.currentLevel]["sequence"]))
     for(var i = 0; i < items.currentLevel && newNotesSequence.length < halfSequenceLength; i++) {
         if(levels[items.currentLevel]["clef"] === levels[i]["clef"]) {
             for(var j = 0; j < levels[i]["sequence"].length && newNotesSequence.length < halfSequenceLength; j++)
                 newNotesSequence.push(levels[i]["sequence"][j])
         }
     }
 
     for(var i = 0; newNotesSequence.length && newNotesSequence.length < halfSequenceLength; i++)
         newNotesSequence.push(newNotesSequence[i % newNotesSequence.length])
 
     for(var i = 0; newNotesSequence.length < fullSequenceLength; i++)
         newNotesSequence.push(targetNotes[i % targetNotes.length])
 
     Core.shuffle(newNotesSequence)
 }
 
 function startGame() {
     currentNoteIndex = 0
     noteIndexToDisplay = 0
     items.progressBar.percentage = 0
     formNewNotesSequence()
     displayNote(newNotesSequence[0])
 }
 
 function displayNote(currentNote) {
     items.multipleStaff.addMusicElement("note", currentNote, "Quarter", false, false, items.background.clefType)
     items.multipleStaff.playNoteAudio(currentNote, "Quarter", items.background.clefType, 500)
     if(!items.isTutorialMode) {
         items.addNoteTimer.interval = timerNormalInterval
         items.addNoteTimer.start()
     }
 }
 
 function wrongAnswer() {
     if(items.multipleStaff.musicElementRepeater.itemAt(1).x <= items.multipleStaff.clefImageWidth) {
         items.multipleStaff.musicElementModel.remove(1)
         currentNoteIndex = (currentNoteIndex + 1) % newNotesSequence.length
     }
 
     items.progressBar.percentage = Math.max(0, items.progressBar.percentage - percentageDecreaseValue)
     items.multipleStaff.resumeNoteAnimation()
     if(items.multipleStaff.musicElementModel.count <= 1)
         items.addNoteTimer.restart()
 }
 
 function correctAnswer() {
     currentNoteIndex = (currentNoteIndex + 1) % newNotesSequence.length
     items.multipleStaff.pauseNoteAnimation()
     items.multipleStaff.musicElementModel.remove(1)
     items.multipleStaff.resumeNoteAnimation()
     items.progressBar.percentage += percentageIncreaseValue
     if(items.progressBar.percentage === 100) {
         items.multipleStaff.pauseNoteAnimation()
         items.displayNoteNameTimer.stop()
         items.addNoteTimer.stop()
         items.bonus.good("flower")
     }
     else if(items.multipleStaff.musicElementModel.count <= 1)
         items.addNoteTimer.restart()
 }
 
 function checkAnswer(noteName) {
     if(noteName === items.multipleStaff.musicElementModel.get(1).noteName_)
         correctAnswer()
     else
         items.displayNoteNameTimer.start()
 }
 
 function nextLevel() {
     items.currentLevel = Core.getNextLevel(items.currentLevel, numberOfLevel)
     initLevel()
 }
 
 function previousLevel() {
     items.currentLevel = Core.getPreviousLevel(items.currentLevel, numberOfLevel);
     initLevel()
 }