| 17 | function SoundMixer.new(customMt) |
| 18 | |
| 19 | local self = {} |
| 20 | setmetatable(self, customMt or SoundMixer_mt) |
| 21 | |
| 22 | g_messageCenter:subscribe(MessageType.GAME_STATE_CHANGED, self.onGameStateChanged, self) |
| 23 | |
| 24 | local xmlFilename = "dataS/soundMixer.xml" |
| 25 | local xmlFile = loadXMLFile("soundMixerXML", xmlFilename) |
| 26 | |
| 27 | self.volumeFactors = {} |
| 28 | for _, groupIndex in pairs(AudioGroup) do |
| 29 | self.volumeFactors[groupIndex] = 1 |
| 30 | end |
| 31 | |
| 32 | self.masterVolume = 1 |
| 33 | |
| 34 | self.gameStates = {} |
| 35 | |
| 36 | if xmlFile ~= nil and xmlFile ~= 0 then |
| 37 | local i = 0 |
| 38 | while true do |
| 39 | local key = string.format("soundMixer.gameState(%d)", i) |
| 40 | if not hasXMLProperty(xmlFile, key) then |
| 41 | break |
| 42 | end |
| 43 | |
| 44 | local gameStateName = getXMLString(xmlFile, key.."#name") |
| 45 | local gameStateIndex = g_gameStateManager:getGameStateIndexByName(gameStateName) |
| 46 | if gameStateIndex ~= nil then |
| 47 | local gameState = {} |
| 48 | gameState.audioGroups = {} |
| 49 | |
| 50 | local j = 0 |
| 51 | while true do |
| 52 | local audioGroupKey = string.format("%s.audioGroup(%d)", key, j) |
| 53 | if not hasXMLProperty(xmlFile, audioGroupKey) then |
| 54 | break |
| 55 | end |
| 56 | |
| 57 | local name = getXMLString(xmlFile, audioGroupKey.."#name") |
| 58 | local volume = getXMLFloat(xmlFile, audioGroupKey.."#volume") or 1.0 |
| 59 | local audioGroupIndex = AudioGroup.getAudioGroupIndexByName(name) |
| 60 | |
| 61 | if audioGroupIndex ~= nil then |
| 62 | local group = {} |
| 63 | group.index = audioGroupIndex |
| 64 | group.volume = volume |
| 65 | gameState.audioGroups[audioGroupIndex] = group |
| 66 | else |
| 67 | print(string.format("Warning: Audio-Group '%s' is not defined for audio-group '%s'!", tostring(name), key)) |
| 68 | end |
| 69 | |
| 70 | j = j + 1 |
| 71 | end |
| 72 | |
| 73 | self.gameStates[gameStateIndex] = gameState |
| 74 | else |
| 75 | print(string.format("Warning: Game-State '%s' is not defined for state '%s'!", tostring(gameStateName), key)) |
| 76 | end |
| 77 | |
| 78 | i = i + 1 |
| 79 | end |
| 80 | |
| 81 | delete(xmlFile) |
| 82 | |
| 83 | else |
| 84 | print("Error: SoundMixer could not load configuration file!") |
| 85 | end |
| 86 | |
| 87 | self.volumes = {} |
| 88 | local gameState = self.gameStates[GameState.LOADING] |
| 89 | if gameState ~= nil then |
| 90 | for _, groupIndex in ipairs(AudioGroup.groups) do |
| 91 | local volume = gameState.audioGroups[groupIndex].volume or 1 |
| 92 | self.volumes[groupIndex] = {volume = volume, listeners = {}} |
| 93 | setAudioGroupVolume(groupIndex, volume) |
| 94 | end |
| 95 | end |
| 96 | |
| 97 | return self |
| 98 | end |
| 108 | function SoundMixer:update(dt) |
| 109 | if self.isDirty then |
| 110 | local gameStateIndex = g_gameStateManager:getGameState() |
| 111 | local gameState = self.gameStates[gameStateIndex] |
| 112 | if gameState ~= nil then |
| 113 | local isDone = true |
| 114 | for audioGroupIndex, audioGroup in pairs(gameState.audioGroups) do |
| 115 | local currentVolume = self.volumes[audioGroupIndex].volume |
| 116 | local target = audioGroup.volume * self.volumeFactors[audioGroupIndex] |
| 117 | if currentVolume ~= target then |
| 118 | isDone = false |
| 119 | |
| 120 | local dir = 1 |
| 121 | local func = math.min |
| 122 | if currentVolume > target then |
| 123 | dir = -1 |
| 124 | func = math.max |
| 125 | end |
| 126 | |
| 127 | currentVolume = func(currentVolume + dir * dt/500, target) |
| 128 | setAudioGroupVolume(audioGroupIndex, currentVolume) |
| 129 | self.volumes[audioGroupIndex].volume = currentVolume |
| 130 | for _, listener in ipairs(self.volumes[audioGroupIndex].listeners) do |
| 131 | listener.func(listener.target, audioGroupIndex, currentVolume) |
| 132 | end |
| 133 | end |
| 134 | end |
| 135 | |
| 136 | if isDone then |
| 137 | self.isDirty = false |
| 138 | end |
| 139 | end |
| 140 | end |
| 141 | end |