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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 | THE FORMAT OF GOBFILES
Do YOU want to make your own GOB-files?
Then you have to know the GOB format!
Here you can find a brief desciption of it.
(this is all about how the file is saved)
Note: Everything is saved in Intel byteorder,
ie the least significant byte first.
THE HEADER
Offset Size Description
0 2 Number of images in the file
For I=1 to Number of images
Offset Size Description
2+I*4 4 Offset in file to image data
End repeat
The above offsets are offsets from the beginning of
the file. Each image has it's own image data.
The image data is like this:
THE IMAGE DATA
Offset Size Description
0 2 Image width in pixels (W)
2 2 Image height in pixels (H)
4 2 Hotspot x
6 2 Hotspot y
8 W*H Bitmap data
The offsets above are offsets in the image data (for each image).
The Hotspot x/y of a specific image works like this:
Whenever a sprite is drawn at (x, y) with that image,
the image is drawn at (x - hotspot x, y - hotspot y),
where hotspot x/y are the hotspots for that image.
The bitmap data is just a block of colordata for each pixel.
It scans the image horisontally left/down. This means that
the first byte represents the upper left pixel, the second
represents the pixel to the right of that and so on.
If the width is 10 pixels then the 10th byte of bitmap data
will represent the pixel (0, 1).
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