hedgewars/uSound.pas
author vittorio.giovara@gmail.com
Tue, 26 Apr 2011 13:13:07 +0200
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(*
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 * Hedgewars, a free turn based strategy game
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 * Copyright (c) 2004-2011 Andrey Korotaev <unC0Rr@gmail.com>
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 *
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 * This program is free software; you can redistribute it and/or modify
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 * it under the terms of the GNU General Public License as published by
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 * the Free Software Foundation; version 2 of the License
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 *
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 * This program is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 * GNU General Public License for more details.
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 *
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 * You should have received a copy of the GNU General Public License
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 * along with this program; if not, write to the Free Software
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 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
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 *)
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{$INCLUDE "options.inc"}
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unit uSound;
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(*
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 * This unit controls the sounds and music of the game.
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 * Doesn't really do anything if isSoundEnabled = false.
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 *
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 * There are three basic types of sound controls:
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 *    Music        - The background music of the game:
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 *                   * will only be played if isMusicEnabled = true
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 *                   * can be started, changed, paused and resumed
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 *    Sound        - Can be started and stopped
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 *    Looped Sound - Subtype of sound: plays in a loop using a
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 *                   "channel", of which the id is returned on start.
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 *                   The channel id can be used to stop a specific sound loop.
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 *)
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interface
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uses SDLh, uConsts, uTypes, sysutils;
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var MusicFN: shortstring; // music file name
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procedure initModule;
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procedure freeModule;
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procedure InitSound; // Initiates sound-system if isSoundEnabled.
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procedure ReleaseSound; // Releases sound-system and used resources.
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procedure SoundLoad; // Preloads some sounds for performance reasons.
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// MUSIC
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// Obvious music commands for music track specified in MusicFN.
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procedure PlayMusic;
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procedure PauseMusic;
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procedure ResumeMusic;
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procedure ChangeMusic; // Replaces music track with current MusicFN and plays it.
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// SOUNDS
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// Plays the sound snd [from a given voicepack],
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// if keepPlaying is given and true,
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// then the sound's playback won't be interrupted if asked to play again.
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procedure PlaySound(snd: TSound);
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procedure PlaySound(snd: TSound; keepPlaying: boolean);
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procedure PlaySound(snd: TSound; voicepack: PVoicepack);
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procedure PlaySound(snd: TSound; voicepack: PVoicepack; keepPlaying: boolean);
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// Plays sound snd [of voicepack] in a loop, but starts with fadems milliseconds of fade-in.
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// Returns sound channel of the looped sound.
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function  LoopSound(snd: TSound): LongInt;
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function  LoopSound(snd: TSound; fadems: LongInt): LongInt;
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function  LoopSound(snd: TSound; voicepack: PVoicepack): LongInt; // WTF?
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function  LoopSound(snd: TSound; voicepack: PVoicepack; fadems: LongInt): LongInt;
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// Stops the normal/looped sound of the given type/in the given channel
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// [with a fade-out effect for fadems milliseconds].
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procedure StopSound(snd: TSound);
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procedure StopSound(chn: LongInt);
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procedure StopSound(chn, fadems: LongInt);
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// MISC
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// Modifies the sound volume of the game by voldelta and returns the new volume level.
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function  ChangeVolume(voldelta: LongInt): LongInt;
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// Returns a pointer to the voicepack with the given name.
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function  AskForVoicepack(name: shortstring): Pointer;
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implementation
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uses uVariables, uConsole, uUtils, uCommands, uDebug;
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const chanTPU = 32;
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var Volume: LongInt;
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    lastChan: array [TSound] of LongInt;
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    voicepacks: array[0..cMaxTeams] of TVoicepack;
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    defVoicepack: PVoicepack;
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    Mus: PMixMusic = nil;
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function  AskForVoicepack(name: shortstring): Pointer;
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var i: Longword;
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    locName, path: shortstring;
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begin
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i:= 0;
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    // First, attempt to locate a localised version of the voice
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    if cLocale <> 'en' then
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        begin
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        locName:= name+'_'+cLocale;
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        path:= Pathz[ptVoices] + '/' + locName;
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        if DirectoryExists(path) then name:= locName
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        else if Length(cLocale) > 2 then
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            begin
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            locName:= name+'_'+Copy(cLocale,1,2);
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            path:= Pathz[ptVoices] + '/' + locName;
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            if DirectoryExists(path) then name:= locName
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            end
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        end;
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    // If that fails, use the unmodified one
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    while (voicepacks[i].name <> name) and (voicepacks[i].name <> '') do
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        begin
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        inc(i);
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        TryDo(i <= cMaxTeams, 'Engine bug: AskForVoicepack i > cMaxTeams', true)
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        end;
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    voicepacks[i].name:= name;
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    AskForVoicepack:= @voicepacks[i]
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end;
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procedure InitSound;
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var i: TSound;
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    channels: LongInt;
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begin
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    if not isSoundEnabled then exit;
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    WriteToConsole('Init sound...');
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    isSoundEnabled:= SDL_InitSubSystem(SDL_INIT_AUDIO) >= 0;
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{$IFDEF IPHONEOS}
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    channels:= 1;
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{$ELSE}
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    channels:= 2;
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{$ENDIF}
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    if isSoundEnabled then
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        isSoundEnabled:= Mix_OpenAudio(44100, $8010, channels, 1024) = 0;
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{$IFDEF SDL_MIXER_NEWER}
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    WriteToConsole('Init SDL_mixer... ');
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    SDLTry(Mix_Init(MIX_INIT_OGG) <> 0, true);
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    WriteLnToConsole(msgOK);
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{$ENDIF}
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    if isSoundEnabled then
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        WriteLnToConsole(msgOK)
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    else
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        WriteLnToConsole(msgFailed);
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    Mix_AllocateChannels(Succ(chanTPU));
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    if isMusicEnabled then
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        Mix_VolumeMusic(50);
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    for i:= Low(TSound) to High(TSound) do
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        lastChan[i]:= -1;
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    Volume:= 0;
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    ChangeVolume(cInitVolume)
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end;
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procedure ReleaseSound;
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var i: TSound;
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    t: Longword;
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begin
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    for t:= 0 to cMaxTeams do
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        if voicepacks[t].name <> '' then
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            for i:= Low(TSound) to High(TSound) do
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                if voicepacks[t].chunks[i] <> nil then
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                    Mix_FreeChunk(voicepacks[t].chunks[i]);
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    if Mus <> nil then
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        Mix_FreeMusic(Mus);
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{$IFDEF SDL_MIXER_NEWER}
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    // make sure all instances of sdl_mixer are unloaded before continuing
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    while Mix_Init(0) <> 0 do
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        Mix_Quit();
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{$ENDIF}
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    Mix_CloseAudio();
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end;
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procedure SoundLoad;
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var i: TSound;
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    t: Longword;
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    s:shortstring;
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begin
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    if not isSoundEnabled then exit;
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    defVoicepack:= AskForVoicepack('Default');
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    for t:= 0 to cMaxTeams do
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        if voicepacks[t].name <> '' then
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            for i:= Low(TSound) to High(TSound) do
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                voicepacks[t].chunks[i]:= nil;
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    for i:= Low(TSound) to High(TSound) do
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    begin
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        defVoicepack^.chunks[i]:= nil;
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        // preload all the big sound files (>32k) that would otherwise lockup the game
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        if (i in [sndBeeWater, sndBee, sndCake, sndHellishImpact1, sndHellish, sndHomerun,
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                  sndMolotov, sndMortar, sndRideOfTheValkyries, sndYoohoo])
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            and (Soundz[i].Path <> ptVoices) and (Soundz[i].FileName <> '') then
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        begin
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            s:= Pathz[Soundz[i].Path] + '/' + Soundz[i].FileName;
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            WriteToConsole(msgLoading + s + ' ');
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            defVoicepack^.chunks[i]:= Mix_LoadWAV_RW(SDL_RWFromFile(Str2PChar(s), 'rb'), 1);
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            TryDo(defVoicepack^.chunks[i] <> nil, msgFailed, true);
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            WriteLnToConsole(msgOK);
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        end;
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    end;
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end;
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procedure PlaySound(snd: TSound);
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begin
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    PlaySound(snd, nil, false);
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end;
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procedure PlaySound(snd: TSound; keepPlaying: boolean);
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begin
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    PlaySound(snd, nil, keepPlaying);
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end;
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procedure PlaySound(snd: TSound; voicepack: PVoicepack);
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begin
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    PlaySound(snd, voicepack, false);
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end;
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procedure PlaySound(snd: TSound; voicepack: PVoicepack; keepPlaying: boolean);
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var s:shortstring;
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begin
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    if (not isSoundEnabled) or fastUntilLag then
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        exit;
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    if keepPlaying and (lastChan[snd] <> -1) and (Mix_Playing(lastChan[snd]) <> 0) then
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        exit;
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    if (voicepack <> nil) then
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    begin
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        if (voicepack^.chunks[snd] = nil) and (Soundz[snd].Path = ptVoices) and (Soundz[snd].FileName <> '') then
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        begin
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            s:= Pathz[Soundz[snd].Path] + '/' + voicepack^.name + '/' + Soundz[snd].FileName;
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            WriteToConsole(msgLoading + s + ' ');
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            voicepack^.chunks[snd]:= Mix_LoadWAV_RW(SDL_RWFromFile(Str2PChar(s), 'rb'), 1);
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            if voicepack^.chunks[snd] = nil then
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                WriteLnToConsole(msgFailed)
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            else
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                WriteLnToConsole(msgOK)
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        end;
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        lastChan[snd]:= Mix_PlayChannelTimed(-1, voicepack^.chunks[snd], 0, -1)
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    end
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    else
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    begin
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        if (defVoicepack^.chunks[snd] = nil) and (Soundz[snd].Path <> ptVoices) and (Soundz[snd].FileName <> '') then
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        begin
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            s:= Pathz[Soundz[snd].Path] + '/' + Soundz[snd].FileName;
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            WriteToConsole(msgLoading + s + ' ');
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            defVoicepack^.chunks[snd]:= Mix_LoadWAV_RW(SDL_RWFromFile(Str2PChar(s), 'rb'), 1);
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            TryDo(defVoicepack^.chunks[snd] <> nil, msgFailed, true);
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            WriteLnToConsole(msgOK);
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        end;
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        lastChan[snd]:= Mix_PlayChannelTimed(-1, defVoicepack^.chunks[snd], 0, -1)
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    end;
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end;
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function LoopSound(snd: TSound): LongInt;
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begin
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    LoopSound:= LoopSound(snd, nil)
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end;
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function LoopSound(snd: TSound; fadems: LongInt): LongInt;
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begin
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    LoopSound:= LoopSound(snd, nil, fadems)
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end;
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function LoopSound(snd: TSound; voicepack: PVoicepack): LongInt;
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begin
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    voicepack:= voicepack;    // avoid compiler hint
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    LoopSound:= LoopSound(snd, nil, 0)
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end;
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function LoopSound(snd: TSound; voicepack: PVoicepack; fadems: LongInt): LongInt;
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var s: shortstring;
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begin
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    if (not isSoundEnabled) or fastUntilLag then
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    begin
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        LoopSound:= -1;
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        exit
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    end;
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    if (voicepack <> nil) then
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    begin
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        if (voicepack^.chunks[snd] = nil) and (Soundz[snd].Path = ptVoices) and (Soundz[snd].FileName <> '') then
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        begin
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            s:= Pathz[Soundz[snd].Path] + '/' + voicepack^.name + '/' + Soundz[snd].FileName;
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            WriteToConsole(msgLoading + s + ' ');
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            voicepack^.chunks[snd]:= Mix_LoadWAV_RW(SDL_RWFromFile(Str2PChar(s), 'rb'), 1);
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            if voicepack^.chunks[snd] = nil then
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                WriteLnToConsole(msgFailed)
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            else
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                WriteLnToConsole(msgOK)
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        end;
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        LoopSound:= Mix_PlayChannelTimed(-1, voicepack^.chunks[snd], -1, -1)
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    end
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    else
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    begin
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        if (defVoicepack^.chunks[snd] = nil) and (Soundz[snd].Path <> ptVoices) and (Soundz[snd].FileName <> '') then
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        begin
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            s:= Pathz[Soundz[snd].Path] + '/' + Soundz[snd].FileName;
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            WriteToConsole(msgLoading + s + ' ');
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            defVoicepack^.chunks[snd]:= Mix_LoadWAV_RW(SDL_RWFromFile(Str2PChar(s), 'rb'), 1);
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            TryDo(defVoicepack^.chunks[snd] <> nil, msgFailed, true);
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            WriteLnToConsole(msgOK);
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        end;
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        if fadems > 0 then
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            LoopSound:= Mix_FadeInChannelTimed(-1, defVoicepack^.chunks[snd], -1, fadems, -1)
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        else
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            LoopSound:= Mix_PlayChannelTimed(-1, defVoicepack^.chunks[snd], -1, -1);
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    end;
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end;
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procedure StopSound(snd: TSound);
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begin
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   332
    if not isSoundEnabled then exit;
4956
48e1f9a04c28 usound: added function for loops with fade in and out
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   333
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0e968ba12a84 memory management for openalbridge
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   334
    if (lastChan[snd] <> -1) and (Mix_Playing(lastChan[snd]) <> 0) then
2948
3f21a9dc93d0 Replace tabs with spaces using 'expand -t 4' command
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   335
    begin
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0e968ba12a84 memory management for openalbridge
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        Mix_HaltChannel(lastChan[snd]);
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   337
        lastChan[snd]:= -1;
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   338
    end;
4
bcbd7adb4e4b - set svn:eol-style to native
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end;
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   340
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procedure StopSound(chn: LongInt);
11fce231f24a Engine:
smxx
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   342
begin
3529
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   343
    if not isSoundEnabled then exit;
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   344
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   345
    if (chn <> -1) and (Mix_Playing(chn) <> 0) then
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   346
        Mix_HaltChannel(chn);
2745
11fce231f24a Engine:
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   347
end;
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   348
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48e1f9a04c28 usound: added function for loops with fade in and out
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procedure StopSound(chn, fadems: LongInt);
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begin
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    if not isSoundEnabled then exit;
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koda
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   352
48e1f9a04c28 usound: added function for loops with fade in and out
koda
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   353
    if (chn <> -1) and (Mix_Playing(chn) <> 0) then
48e1f9a04c28 usound: added function for loops with fade in and out
koda
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   354
        Mix_FadeOutChannel(chn, fadems);
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   355
end;
48e1f9a04c28 usound: added function for loops with fade in and out
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   356
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procedure PlayMusic;
2905
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   358
var s: shortstring;
4
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   359
begin
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    if (not isSoundEnabled) or (MusicFN = '') or (not isMusicEnabled) then
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   361
        exit;
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   362
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   363
    s:= PathPrefix + '/Music/' + MusicFN;
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   364
    WriteToConsole(msgLoading + s + ' ');
565
092cb8deffc5 Fix some bug, finish playlist implementation
unc0rr
parents: 564
diff changeset
   365
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   366
    Mus:= Mix_LoadMUS(Str2PChar(s));
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   367
    TryDo(Mus <> nil, msgFailed, false);
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   368
    WriteLnToConsole(msgOK);
565
092cb8deffc5 Fix some bug, finish playlist implementation
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diff changeset
   369
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   370
    SDLTry(Mix_FadeInMusic(Mus, -1, 3000) <> -1, false)
4
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   371
end;
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diff changeset
   372
371
731ad6d27bd1 integer -> LongInt
unc0rr
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   373
function ChangeVolume(voldelta: LongInt): LongInt;
174
0b2c5b22f644 Changeable volume
unc0rr
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diff changeset
   374
begin
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   375
    if not isSoundEnabled then
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   376
        exit(0);
2327
4832b77ec958 restored volumen control (hoorray)
koda
parents: 2303
diff changeset
   377
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   378
    inc(Volume, voldelta);
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   379
    if Volume < 0 then Volume:= 0;
0e968ba12a84 memory management for openalbridge
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   380
    Mix_Volume(-1, Volume);
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   381
    Volume:= Mix_Volume(-1, -1);
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   382
    if isMusicEnabled then Mix_VolumeMusic(Volume * 4 div 8);
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   383
    ChangeVolume:= Volume * 100 div MIX_MAX_VOLUME
174
0b2c5b22f644 Changeable volume
unc0rr
parents: 97
diff changeset
   384
end;
0b2c5b22f644 Changeable volume
unc0rr
parents: 97
diff changeset
   385
1712
f5b916de40f0 Patch by nemo (polished by me)
unc0rr
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diff changeset
   386
procedure PauseMusic;
f5b916de40f0 Patch by nemo (polished by me)
unc0rr
parents: 1669
diff changeset
   387
begin
3529
0e968ba12a84 memory management for openalbridge
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   388
    if (MusicFN = '') or (not isMusicEnabled) then
0e968ba12a84 memory management for openalbridge
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   389
        exit;
2515
51d3f4b6293a revert audio to use SDL_mixer -- also frontend uses it, so it needs sdlmixer sources
koda
parents: 2501
diff changeset
   390
3529
0e968ba12a84 memory management for openalbridge
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   391
    Mix_PauseMusic(Mus);
1712
f5b916de40f0 Patch by nemo (polished by me)
unc0rr
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diff changeset
   392
end;
f5b916de40f0 Patch by nemo (polished by me)
unc0rr
parents: 1669
diff changeset
   393
f5b916de40f0 Patch by nemo (polished by me)
unc0rr
parents: 1669
diff changeset
   394
procedure ResumeMusic;
f5b916de40f0 Patch by nemo (polished by me)
unc0rr
parents: 1669
diff changeset
   395
begin
3529
0e968ba12a84 memory management for openalbridge
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parents: 3418
diff changeset
   396
    if (MusicFN = '') or (not isMusicEnabled) then
0e968ba12a84 memory management for openalbridge
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diff changeset
   397
        exit;
2515
51d3f4b6293a revert audio to use SDL_mixer -- also frontend uses it, so it needs sdlmixer sources
koda
parents: 2501
diff changeset
   398
3529
0e968ba12a84 memory management for openalbridge
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parents: 3418
diff changeset
   399
    Mix_ResumeMusic(Mus);
1712
f5b916de40f0 Patch by nemo (polished by me)
unc0rr
parents: 1669
diff changeset
   400
end;
f5b916de40f0 Patch by nemo (polished by me)
unc0rr
parents: 1669
diff changeset
   401
4748
ce9b48de1f52 sudden death, now with visual and audial effects :D
Henek
parents: 4461
diff changeset
   402
procedure ChangeMusic;
ce9b48de1f52 sudden death, now with visual and audial effects :D
Henek
parents: 4461
diff changeset
   403
begin
ce9b48de1f52 sudden death, now with visual and audial effects :D
Henek
parents: 4461
diff changeset
   404
    if (MusicFN = '') or (not isMusicEnabled) then
ce9b48de1f52 sudden death, now with visual and audial effects :D
Henek
parents: 4461
diff changeset
   405
        exit;
ce9b48de1f52 sudden death, now with visual and audial effects :D
Henek
parents: 4461
diff changeset
   406
5134
sheepluva
parents: 5107
diff changeset
   407
    // get rid of current music
4748
ce9b48de1f52 sudden death, now with visual and audial effects :D
Henek
parents: 4461
diff changeset
   408
    if Mus <> nil then
ce9b48de1f52 sudden death, now with visual and audial effects :D
Henek
parents: 4461
diff changeset
   409
        Mix_FreeMusic(Mus);
ce9b48de1f52 sudden death, now with visual and audial effects :D
Henek
parents: 4461
diff changeset
   410
ce9b48de1f52 sudden death, now with visual and audial effects :D
Henek
parents: 4461
diff changeset
   411
    PlayMusic;
ce9b48de1f52 sudden death, now with visual and audial effects :D
Henek
parents: 4461
diff changeset
   412
end;
ce9b48de1f52 sudden death, now with visual and audial effects :D
Henek
parents: 4461
diff changeset
   413
4398
36d7e4b6ca81 Move some command handlers out of uCommands into more appropriate places, thus removing some dependencies. Ideally uCommands shouldn't depend on anything (except for uTypes and uConsts probably)
unc0rr
parents: 4377
diff changeset
   414
procedure chVoicepack(var s: shortstring);
36d7e4b6ca81 Move some command handlers out of uCommands into more appropriate places, thus removing some dependencies. Ideally uCommands shouldn't depend on anything (except for uTypes and uConsts probably)
unc0rr
parents: 4377
diff changeset
   415
begin
36d7e4b6ca81 Move some command handlers out of uCommands into more appropriate places, thus removing some dependencies. Ideally uCommands shouldn't depend on anything (except for uTypes and uConsts probably)
unc0rr
parents: 4377
diff changeset
   416
    if CurrentTeam = nil then OutError(errmsgIncorrectUse + ' "/voicepack"', true);
36d7e4b6ca81 Move some command handlers out of uCommands into more appropriate places, thus removing some dependencies. Ideally uCommands shouldn't depend on anything (except for uTypes and uConsts probably)
unc0rr
parents: 4377
diff changeset
   417
    if s[1]='"' then Delete(s, 1, 1);
36d7e4b6ca81 Move some command handlers out of uCommands into more appropriate places, thus removing some dependencies. Ideally uCommands shouldn't depend on anything (except for uTypes and uConsts probably)
unc0rr
parents: 4377
diff changeset
   418
    if s[byte(s[0])]='"' then Delete(s, byte(s[0]), 1);
36d7e4b6ca81 Move some command handlers out of uCommands into more appropriate places, thus removing some dependencies. Ideally uCommands shouldn't depend on anything (except for uTypes and uConsts probably)
unc0rr
parents: 4377
diff changeset
   419
    CurrentTeam^.voicepack:= AskForVoicepack(s)
36d7e4b6ca81 Move some command handlers out of uCommands into more appropriate places, thus removing some dependencies. Ideally uCommands shouldn't depend on anything (except for uTypes and uConsts probably)
unc0rr
parents: 4377
diff changeset
   420
end;
36d7e4b6ca81 Move some command handlers out of uCommands into more appropriate places, thus removing some dependencies. Ideally uCommands shouldn't depend on anything (except for uTypes and uConsts probably)
unc0rr
parents: 4377
diff changeset
   421
3038
4e48c276a468 In pascal unit is a namespace
unc0rr
parents: 2948
diff changeset
   422
procedure initModule;
2716
b9ca1bfca24f complete the replacement of init/free wrappers for every unit
koda
parents: 2674
diff changeset
   423
begin
4398
36d7e4b6ca81 Move some command handlers out of uCommands into more appropriate places, thus removing some dependencies. Ideally uCommands shouldn't depend on anything (except for uTypes and uConsts probably)
unc0rr
parents: 4377
diff changeset
   424
    RegisterVariable('voicepack', vtCommand, @chVoicepack, false);
2948
3f21a9dc93d0 Replace tabs with spaces using 'expand -t 4' command
unc0rr
parents: 2905
diff changeset
   425
    MusicFN:='';
2716
b9ca1bfca24f complete the replacement of init/free wrappers for every unit
koda
parents: 2674
diff changeset
   426
end;
b9ca1bfca24f complete the replacement of init/free wrappers for every unit
koda
parents: 2674
diff changeset
   427
3038
4e48c276a468 In pascal unit is a namespace
unc0rr
parents: 2948
diff changeset
   428
procedure freeModule;
2716
b9ca1bfca24f complete the replacement of init/free wrappers for every unit
koda
parents: 2674
diff changeset
   429
begin
3615
b78d7959540a further code cleanup and less redundancy
koda
parents: 3529
diff changeset
   430
    if isSoundEnabled then
b78d7959540a further code cleanup and less redundancy
koda
parents: 3529
diff changeset
   431
        ReleaseSound();
2716
b9ca1bfca24f complete the replacement of init/free wrappers for every unit
koda
parents: 2674
diff changeset
   432
end;
b9ca1bfca24f complete the replacement of init/free wrappers for every unit
koda
parents: 2674
diff changeset
   433
2515
51d3f4b6293a revert audio to use SDL_mixer -- also frontend uses it, so it needs sdlmixer sources
koda
parents: 2501
diff changeset
   434
end.
2192
4763a778c033 - Fix quickplay sound bug triggered by two faults: ttsmj's (passing voicepack with empty name in team config) and koda's (he changed fallback to default scheme condition)
unc0rr
parents: 2191
diff changeset
   435