Fixes GUI events leaking into engines at startup. This caused
Phantasmagoria 1 to skip its introduction if the game was started from
the ScummVM GUI with a keyboard (Enter) but not with a mouse because
the key-down event started the engine and the key-up event remained
in the queue.
This also purges and mouse events since we happen to already have a
purgeMouseEvents() method. We may want to also clear joystick inputs,
or possibly the entire event queue, but that can be done after the
upcoming release. For now, the known bug is fixed.
This is a degradation from the split of detection plugins. All the
caching code which was present was left with detection plugins which
now make no sense: we always load all detection plugins as a whole.
This commit moves the caching logic over to the Engine plugins.
This opens a question now whether we should move all to UNCACHED_PLUGINS
Create a new flag --enable-windows-console to build with console
output on MinGW. The default behavior will be to enable the console.
The current plan is to continue to offer the users both options for
release builds - ScummVM and ScummVM (noconsole).
Whenever the text console is enabled, Windows console will be added
by default. This is to prevent a situation where ScummVM will not load
any visible debug console on hotkey or error.
This is currently only (partially) implemented for the 16-color Mac
versions of Loom and Indiana Jones and the Last Crusade. The text is
still drawn in color, since that's rendered separately, but I'm
committing this now while it still works.
When not displaying the GUI, plugins are not unloaded.
This can cause problems on AmigaOS where plugins must be unloaded before
exiting. Else, some plugins with global destructors cause crashes being
destroyed too late.
OSystem now just returns a nullptr if there is no text to speech manager instance
(because none is compiled into the binary, or the system doesn't provide support
for it). This removed the need for the engine authors to add scummvm osystem compile
time options checks into their engine code
