[Scummvm-tracker] [ScummVM :: Bugs] #13663: HYPNO: Slow frame rate, navigation issue and frequent sound pops

[ScummVM :: Bugs]

#13663: HYPNO: Slow frame rate, navigation issue and frequent sound pops
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Reporter:  antoniou79               |       Owner:  neuromancer
    Type:  defect                   |      Status:  new
Priority:  normal                   |   Component:  Engine: Hypno
 Version:                           |  Resolution:
Keywords:  audio, pops, frame rate  |        Game:  Wetlands
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Comment (by neuromancer):

 Thanks for the report!

 > 1. There are frequent "pops" in the audio, very noticeable during
 gameplay. Non-gameplay videos seem to not have this issue.

 This is a regression in 2.7git, which should be fixed here:
 https://github.com/scummvm/scummvm/commit/a31e1b63156141d2574fc29dbc1b92fc000dc1fd

 > 2. The framerate in the gameplay feels significantly slower than when
 playing in DosBox, which feels faster and smoother.

 This is an interesting issue. I don't have access to the original hardware
 which was supposed to run this game so I don't know how it played
 originally. The dosbox version is emulated, and depends on the your CPU
 speed (number of cycles, which I believe are not fixed). Some levels later
 in the game (e.g. the one with the motorcycle) seems to be much more
 difficult than expected, because the speed of the missiles
 (https://www.mobygames.com/game/wetlands/hints/hintId,915/). I can still
 tweak it to make it a little faster, but it will need some
 experimentation.

 > 3. When playing in DosBox, moving the mouse towards the edges of the
 screen causes a bit of a navigation movement (like the view moves up or
 down or left or right). In the ScummVM version this does not seem to work.

 I was able to move this left or right moving the pointer near the edge,
 however it is not as smooth as expected. I think the code expects input
 events so moving a little the mouse should trigger the screen movement.

 >  Edit: The 1st issue with the audio pops does not seem to occur in
 current 2.6.0 stable daily, or it's very unnoticeable.

 It is nice to know that the stable daily is a little more stable than 2.7.
 :)
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Ticket URL: <https://bugs.scummvm.org/ticket/13663#comment:2>
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