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LIT file fix

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mh Joined: 12 Jan 2008 Posts: 910 |

Posted: Sun Jan 10, 2010 10:58 pm Post subject: LIT file fix |

You know the story: you're playing a mod, the mod has a start.bsp, you have a start.lit in your ID1 folder, you get the wrong lighting. I fixed this ages ago in DirectQ so I was quite surprised to recently learn that something similar wasn't universal.
I can't give exact code because everyone codes LIT file support differently, but the general approach is:

- Run COM_FOpenFile to open your LIT file (let's assume it opens OK for now); the return value is the length of the file.
- Subtract 8 from the length (for the header).
- Divide the result by 3 (because it's 3 component lighting) - it should divide evenly by 3, if it doesn't it's another way of validating the LIT file.
- The final result should be equal to l->filelen, if it's not then you have the wrong LIT file and abort loading it.

_________________
DirectQ Engine - New release 1.8.666a, 9th August 2010
MHQuake Blog (General)
Direct3D 8 Quake Engines

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ceriux Joined: 06 Sep 2008 Posts: 969 Location: Florida, USA |

Posted: Mon Jan 11, 2010 12:15 am Post subject: |

why dont you engine coders use colored lighting with out lit files like half-life again? _________________ QuakeDB - Quake ModDB Group

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mh Joined: 12 Jan 2008 Posts: 910 |

Posted: Mon Jan 11, 2010 12:43 am Post subject: |

Something to do with Q1BSP not supporting it I think. Extending Q1BSP to support it was tried before and didn't work. LIT files were preferred at the time because they were optional (you didn't need an engine that supported them) and they didn't pollute the original BSP.
Maybe things have changed since then? If so there's a thread to shout about it on.
_________________
DirectQ Engine - New release 1.8.666a, 9th August 2010
MHQuake Blog (General)
Direct3D 8 Quake Engines
Last edited by mh on Mon Jan 11, 2010 1:09 am; edited 1 time in total

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ceriux Joined: 06 Sep 2008 Posts: 969 Location: Florida, USA |

Posted: Mon Jan 11, 2010 1:06 am Post subject: |

ohhh ic alright -.- _________________ QuakeDB - Quake ModDB Group

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