Moiré Plasma Effect (Scratch 2.0)
Game Introduction
This project uses moiré patterns to mimic a plasma effect. This technique has its pros and cons. Advantages: - Smooth animation; under Scratch, the use of sprites and transparency outperforms traditional brute-force pixel manipulations. - Simple code; the complexity is in the images. Disadvantages: - Visible 'fabric' (thin black horizontal lines). - Low contrast. - Very sensitive to scaling; any non-integer scaling factor may ruin the effect. Further reading: https://en.wikipedia.org/wiki/Moir%C3%A9_pattern https://en.wikipedia.org/wiki/Plasma_effect The moiré patterns were created using GIMP (http://www.gimp.org). Solid noise was applied as a displacement map to a pattern of black and white horizontal lines; the resulting pattern was used as the alpha channel in an otherwise black image. Sound: 'Lava loop' by Audionautics. https://www.freesound.org/people/Audionautics/sounds/133901/ Licensed under CC BY 3.0. https://creativecommons.org/licenses/by/3.0/ BUGS: Looks terrible when run in full-screen mode; apparently the graphical scaling emphasizes the 'fabric' lines. Looks terrible when run with the Stage3D engine (i.e. in a project that uses certain graphics effects - see http://wiki.scratch.mit.edu/wiki/Stage3D); it appears the bottom part of a sprite gets blurred, possibly due to misaligned scan lines.
How To Play
Please DO NOT run in full-screen mode - it looks terrible! For the same reason, keep the zoom factor of your web browser at 100% - nothing more, nothing less! Just click the green flag, sit back and enjoy. Move the sliders to tune speed, direction and colors.
Author
heldlaw
Category
Game Information
Game Popularity
546 views
Collection Count
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