Due to the need to calculate the audio duration with millisecond
precision from the file size, it is possible to overflow a 32-bit
integer in games with long background audio loops, like RAMA,
during the calculation of the duration.
It is also not necessary to give some framerate here, so eliminate
the unnecessary explicit Timestamp construction with the second
argument.
Passing overlapping buffers to C standard library memcpy, strcpy,
and strncpy is undefined behavior. In SSCI these operations would
perform a forward copy, and most stdlib implementations do the
same, but at least newer Linux glibc on x86 copies bytes in
reverse, so just using the standard library on this platform
results in broken output.
Because SSCI used a blind forward copy instead of memmove for
overlapping copy operations, this patch implements an explicit
forward copy to ensure that overlapping copies continue to operate
the same as in SSCI.
This fixes the Island of Dr. Brain v1.1 flamingo puzzle
(script 185, flamingos::init, localCall 4c3) on platforms that do
not perform forward copy in memcpy/strcpy/strncpy.
Thanks to @moralrecordings for research on this bug and an initial
patch using memmove.
Closes gh-1034.
This code was assuming that retval points to the start of the next
instruction, which is only true if the current parameter is the last
one. This fixes op_call printing.
When quitting the game at the main menu and hitting no
or quitting the game while playing the cursor color
over the buttons will be tan the first time rather
than red. This fix makes it so it will be red.
This was done by removing a check in HotSpot::doit()
which checks the global193 value. Removing this check
fixes the problem.
Fixes Trac#9977.
Thanks snover and wjp for your help.
This flag is removed for a few reasons:
* Engines universally set this flag to true for widths > 320,
which made it redundant everywhere;
* This flag functioned primarily as a "force 1x scaler" flag,
since its behaviour was almost completely undocumented and users
would need to figure out that they'd need an explicit non-default
scaler set to get a scaler to operate at widths > 320;
* (Most importantly) engines should not be in the business of
deciding how the backend may choose to render its virtual screen.
The choice of rendering behaviour belongs to the user, and the
backend, in that order.
A nearby future commit restores the default1x scaler behaviour in
the SDL backend code for the moment, but in the future it is my
hope that there will be a better configuration UI to allow users
to specify how they want scaling to work for high resolutions.
This reverts commit ae8e4fa8e9.
This change is wrong in any case. It should be specific to temp
14+15 at the very least. I also did not get an answer on what
is actually happening internally. That's not how we should
add workarounds. My review was also still pending.
During the wordsearch puzzle (room 320 click left door) the
game will crash because of an uninitalized read of temp
variables in word::dispatchEvent (which gets called a lot),
if the player clicks the same letter or different letters
aggressively or holds down the enter key.
Fixes Trac#9783.
This removes the unnecessary Buffer subclass and stops most places
where the output buffer was being interrogated about dimensions
instead of GfxFrameout.
* Rewrap comments to 80 columns
* Clarify comments where possible
* Use smart pointers where appropriate
* Change view/pic flags detection to always use word-size
(byte-size check for flag 0x80 was a compiler optimisation)
* Use containers where appropriate
* Re-wrap doxygen comments to 80 columns
* Clarify comments for parts of the engine that are understood now
but were not understood at the time of the initial
implementation
* Replace raw pointers with smart pointers
* Use references instead of const pointers where appropriate
* Tweak initialisation
* Tweak palette copies to the stack
Set the default reverb configuration present in either the MT-32
patch data or MT32.DRV of SCI0 games before playing each sound, as
a previously played sound may have changed it.
Also, do not perform a general reverb init, since the start of a
sound will do that now.
Closes gh-1023.
If the user has "Prefer digital sound effects" disabled for a SCI0
game, do not play the digital sample version of a sound resource, if
such data is present. When the resource has only digital sample data
and no MIDI information, play the sample instead.
Closes gh-1022.
This will cause non-linear time shifts in the system timer that
the game's custom save logic may not expect, but in initial testing
the game doesn't seem to care about this.
Fixes Trac#10259.
Colin Snover
Willem Jan Palenstijn
David Fioramonti
Martin Kiewitz
Ruud Klaver