Make a selection that has just the walls outline shape on it. I usually turn off all the other layers except the one with the walls shape. Take this selection and invert it (so that the selected parts are the "walls" interior. Now you wan to grow(or shrink) the selection (see the selection menu in GIMP) so that the selection is slightly bigger than the original(if you turn the grey walls back on, the selection should be out in the rooms by a few (2-5) px instead of inside any of the walls. Fill with black. Move the layer to below the walls and above the floor texture. Turn off the selection and use G. Blur to suit. Probably 5 px, perhaps 10. This depends on how much bigger the selection was that you filled with black.
My Finished Maps
Works in Progress(or abandoned tests)
My Tutorials:
Explanation of Layer Masks in GIMP
How to create ISO Mountains in GIMP/PS using the Smudge tool
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Unless otherwise stated by me in the post, all work is licensed under a Creative Commons Attribution-Noncommercial 3.0 United States License.
If there were a statistic on "Filter Used Most," kept in GIMP, mine would easily be Gaussian Blur.
Despite that, your method never occurred to me. God I feel dumb sometimes.
I'm trying to get a .zip with my .xcf uploaded, but it appears my internet connection is being a punk and won't let me.
Here is an example that shows how big a difference this can make. Left is just a background, and inner wall (with bevel) and a floor. Right is exactly the same thing but adding a slight shadow to the wall. See how it makes a world of difference? The one of the right looks like it has more depth and is "sunken" into the background texture.
Sorry about the craptastic textures used, but i am at work instead of home where I have better stuff.
My Finished Maps
Works in Progress(or abandoned tests)
My Tutorials:
Explanation of Layer Masks in GIMP
How to create ISO Mountains in GIMP/PS using the Smudge tool
----------------------------------------------------------
Unless otherwise stated by me in the post, all work is licensed under a Creative Commons Attribution-Noncommercial 3.0 United States License.
My tutorials: Using GIMP to Create an Artistic Regional Map ~ All My Tutorials
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Damn you Rob!! You made me come back to this. I went one up and in addition to the floor/background overlays, I also added:
Small selection filled with 50% grey set to burn
Larger Selection filled with white set to Difference
Bump map on the background.
There... are you happy now?
My Finished Maps
Works in Progress(or abandoned tests)
My Tutorials:
Explanation of Layer Masks in GIMP
How to create ISO Mountains in GIMP/PS using the Smudge tool
----------------------------------------------------------
Unless otherwise stated by me in the post, all work is licensed under a Creative Commons Attribution-Noncommercial 3.0 United States License.