Difference between revisions of "Active sprites rendered one pixel to the right of actual location"
From Worms Knowledge Base
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{{ParentArticle|[[Tricks and glitches (first generation)]]}} | {{ParentArticle|[[Tricks and glitches (first generation)]]}} | ||
| − | In [[WinUAE]], the sprites for worms, projectiles, mines and in-motion gravestones are shifted to the right by one pixel, resulting in an inaccurate representation of the object's current location. Once the object has stopped moving or is no longer active, the sprite shifts back to its "real" location. This issue is still present as of WinUAE 4.0.0. | + | [[File:WDC-halfpixel.jpg|200px|thumb|right|The glitch occurring at the half-pixel level (or "Hires" mode) in [[WinUAE]] 4.0.0.]] In [[WinUAE]], the sprites for worms, projectiles, mines and in-motion gravestones are shifted to the right by one pixel, resulting in an inaccurate representation of the object's current location. Once the object has stopped moving or is no longer active, the sprite shifts back to its "real" location. This issue is still present as of WinUAE 4.0.0. |
An extreme version of this glitch is also present in [[FS-UAE]], a multi-platform Amiga emulator - the entire horizontal band of the display - terrain, mountain background and all - is shifted by one pixel to the right. This is also present in the GUI, suggesting the possibility that WinUAE is not accurately displaying the [[wind]] and weapon power levels. | An extreme version of this glitch is also present in [[FS-UAE]], a multi-platform Amiga emulator - the entire horizontal band of the display - terrain, mountain background and all - is shifted by one pixel to the right. This is also present in the GUI, suggesting the possibility that WinUAE is not accurately displaying the [[wind]] and weapon power levels. | ||
Revision as of 04:46, 1 July 2018
An extreme version of this glitch is also present in FS-UAE, a multi-platform Amiga emulator - the entire horizontal band of the display - terrain, mountain background and all - is shifted by one pixel to the right. This is also present in the GUI, suggesting the possibility that WinUAE is not accurately displaying the wind and weapon power levels.
Curiously, this glitch appears to affect sprites at the half-pixel level. The Amiga's native "Hires" mode halves the horizontal width of pixels, resulting in rectangular pixels and more horizontal detail. WormsDC uses this mode on the menus, but appears to use the Amiga's default "Lores" mode in-game. It's therefore unusual that WinUAE and FS-USE would render this error at a Hires pixel depth, unless WormsDC is doing something sneaky with the screen mode.
This glitch also affects the brush in Graffiti mode.
Possible fix
A temporary solution for this bug is to change the resolution setting on WinUAE's Display settings from "Hires (normal)" to "Lores". This resolves the issue in normal play but, as a side-effect, reduces the pixel depth of the menu interface.
Changing this setting to SuperHires results in a version of this glitch that occurs on the quarter-pixel level, with Worms that come to a stop appearing to "settle" into a particular position that can be off by a quarter-pixel.
