[ scummvm-Feature Requests-650427 ] temporal interpolation for animation

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Feature Requests item #650427, was opened at 2002-12-08 14:45
Message generated for change (Comment added) made by fingolfin
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Category: None
Group: None
Status: Open
Resolution: None
Priority: 1
Submitted By: Alex Eddy (arekkusu)
Assigned to: Nobody/Anonymous (nobody)
Summary: temporal interpolation for animation

Initial Comment:
Here's a suggestion for improving the visuals. This
goes beyond the original games, like the 2xsai/Eagle
modes, except this is temporal instead of spatial:

If a game's screen updates are fixed at e.g. 15 fps,
display them in the VM at 30fps, inserting interpolated
frames. The simplest method is to just alpha blend the
current frame at 50% opacity over the previous frame.

This will result in some blur for scrolling scenes, but
it may provide improved visuals for all the cel
animation where frame sequences have small differences.

Note: I don't know if this is feasible for all SCUMM
games since I only own two. Is the frame rate constant?

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>Comment By: Max Horn (fingolfin)
Date: 2003-05-13 02:34

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Personally I'd close this request. It might sound interesting, but it seems 
somewhat pointless, too. Besides the fact that this would clog up lots of CPU 
time, the hand drawn 2d pixel art is not exactly well suited for frame 
interpolation. I doubt that puting the major resources reuired to retro fit this 
into the engine (which I judge as very complicated) into this would pay off in 
terms of improvement game experience - in fact I have my doubts it'll be an 
improvement at all.

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Comment By: James Brown (ender)
Date: 2002-12-08 15:15

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It's an intresting concept, but the code would be quite tricky. 
 
Animation speeds are constant per animation sequence, although 
variable between costumes/actors. 
 

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