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- At at least one place in INDY4 the game attempts to send a Roland MT-32 patch to the Amiga driver. This will fail and thus not cause any harm, but I have added a check nonetheless. The original Amiga driver ignores sysex messages that don't have the iMuse manufacturer id 7D.
- In INDY4 the iMuse player thinks it has a percussion channel due to the fact that it plays ROL resources. This should also be irrelevant for the actual playback, but I have added a check for that, too.
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FOA Amiga uses 'ROL ' resources (unlike MI2 which has 'AMI ' resources). So our imuse player treated those as MT32 tracks playing on a non-MT32 device and applied GM mapping. Which of course messed up the instruments.
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(several function declarations in imuse_internal.h)
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This warning will not only show up if a tag is actually unrecognized but also in cases where the tag is recognized, but the resource size is 0. This happens quite a lot in the Amiga version of MI2 with 'SOU ' tags.
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The audio track is not broken. LEC simply didn't make good euphony music tracks for the FM-Towns. There is nothing we can do about that.
The TODO implies that someone should mess around with the audio data (change the composition?).
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- move mac, pc speaker and fm-towns ims sound drivers into separate directory
(AdLib and MT32/GM drivers are still too entangled with common code to be moved so easily, especially MT32/GM. It would require lots of changes to the common code and possibly to all engines using the MidiDriver class. So I leave that for now.)
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This fixes the issue that some rhythm instruments didn't receive correct notes. The changes have been limited to the Amiga versions.
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(applies to MI2 and INDY4)
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Recent GCC versions complain if you memset() a class or struct that
contain non-POD data types. Get around that by either initializing
the object when created, or by adding a reset() method.
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- Change float suffix to uppercase
- Initialize potentially uninitialized variables
- Fix default cases in switch statements
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What:
The bug is reproducible in the following ways:
1. quiting the game
2. enter challenge mode state 2, when the game starts move mouse around
the menu buttons (choose building or weapons)
Observed behavior: In he/wiz_he.cpp:2839, the function failed to return since
the stack around variable 'color' was corrupted. The game will crash then.
Analysis:
Since other function will modify memory area around local variable 'color',
the bug shoud be caused by memory overwritten. The memory write happens
in this modified file. From the code, it only wants to write a certain amount
of pixels. So I found 2 places where more pixels are written. This causes
stack memory corruption.
Fix:
Add checking. If we have written enough pixels then break.
Testing:
The game UI looks correct. Single player mode game is tested.
Bug no longer observable. Tested for both cases mentioned above.
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Fixes Trac#10616.
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Fixes Trac#3813 and makes this version of the game completable.
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The speech sample at VCTL offset 0x76ccbca ("Hey you!") which is used
when Indy gets caught on the German submarine seems to not be a VOC
but raw PCM s16be at (this is a guess) 44.1 kHz with a bogus VOC header.
To work around this we skip the VOC header and decode the raw PCM data.
Fixes Trac#10559
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This commit introduces the following (seemingly non-invasive) changes
to make the 'imuse play' debugger command more useful (i.e. don't crash
when trying to load the wrong kind of (sound) resource.
* ScummEngine::readSoundResource()
Instead of fatally error()'ing upon hitting a non-sound resource type,
e.g. a room header (0x524d4844 aka RMHD), we now only issue a warning().
This enables the already existing dead code which properly returns 0
(aka no resource loaded).
* ResourceManager::validateResource()
Instead of fatally error()'ing upon hitting an illegal glob type we now
only issue a warning() and return false (also existing dead code).
All methods calling validateResource() check its return value so this
seems like the right thing to do anyway.
* ScummDebugger::Cmd_IMuse()
Instead of directly calling ensureResourceLoaded() we now call
getResourceAddress() instead (which in turn calls ensureResourceLoaded()
and handles other edge cases) and only attempt to play a sound if the
returned pointer actually is valid.
Fixes Trac#10527.
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In some cases the pointer returned is used directly without further
error checking.
As most instances already assert() in this case this commit simply
adds asserts where missing and deemed appropriate.
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ENGINES: Return unknown game variants with the list of detected games
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v5+ scripts can request saving/loading of savegames, this type of
savegame is internally called a "temporary" savegame
(_saveStateTemporary == true) which is invisible to the user (I'm not
sure whether this is by design or not).
Currently the savegame handling in scummLoop_handleSaveLoad() doesn't
distinguish between such temporary savegames and normal autosaves and
unconditionally resets _lastSaveTime (even after loading).
This has the unwanted side effect of potentially delaying the creation
of normal autosaves which are supposed to be created in accordance with
the autosave period setting in the GUI.
This commit makes sure that _lastSaveTime only gets updated if and only
if saving a (non-temporary) autosave.
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Both means to calculate `diff` are essentially equal because
wraparound of unsigned integers is well-defined and does what
the 'else' branch is simulating manually. Because of this,
gcc complains when compiling with -Wduplicated-branches.
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the Add Game feature
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This commit introduces the following changes:
1. Graphics::loadThumbnail()
Now returns a boolean and takes a new argument skipThumbnail which
defaults to false. In case of true, loadThumbnail() reads past the
thumbnail data in the input stream instead of actually loading the
thumbnail. This simplifies savegame handling where, up until now,
many engines always read the whole savegame metadata (including
the thumbnail) and then threw away the thumbnail when not needed
(which is in almost all cases, the most common exception being
MetaEngine::querySaveMetaInfos() which is responsible for loading
savegame metadata for displaying it in the GUI launcher.
2. readSavegameHeader()
Engines which already implement such a method (name varies) now take
a new argument skipThumbnail (default: true) which is passed
through to loadThumbnail(). This means that the default case for
readSavegameHeader() is now _not_ loading the thumbnail from a
savegame and just reading past it. In those cases, e.g.
querySaveMetaInfos(), where we actually are interested in loading
the thumbnail readSavegameHeader() needs to explicitely be called
with skipThumbnail == false.
Engines whose readSavegameHeader() (name varies) already takes an
argument loadThumbnail have been adapted to have a similar
prototype and semantics.
I.e. readSaveHeader(in, loadThumbnail, header) now is
readSaveHeader(in, header, skipThumbnail).
3. Error handling
Engines which previously did not check the return value of
readSavegameHeader() (name varies) now do so ensuring that possibly
broken savegames (be it a broken thumbnail or something else) don't
make it into the GUI launcher list in the first place.
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