Header dc.l Address_Of_Next_Bank Start-24
dc.l Length_Of_Bank + 16 Start-20
dc.l Number_Of_The_Bank Start-16
dc.w Flag Start-12 (5=Objects or 9=lcons)
dc.w Free_For_Future Start-10 (Do not touch!)
dc.b "Sprites " Start-8 (or "Icons ")
* Start of the bank Returned by START function
Start dc.w Number_Of_Images Returned by LENGTH function
* ".img" stands for the number of the image
* There is a separate pointer for each image in the bank
REPT Number_Of_Images For IMG=1 To No_Of_Images
* Store pointer values
dc.l lmage_Address.img Address of Image
dc.l Mask_Address.img Address of Mask (if defined)
ENDR
* Colour palette (32 words). This holds the colour values used by your images
dc.w 32
Image_Address.img
If you have created a blank image using INS BOB, the address of the image will be 0 (zero). In
this case, there is obviously no mask address either.
Mask_Address.img
This can have different values. If the value equals zero, the mask is not yet calculated. It will be
created when the image is assigned to the Bob automatically. If the value is -1 the user has called
the NO MASK command, so AMOS Professional will not bother with the mask. If the
Mask_Address.img is greater than zero , it will hold the address of the mask in Chip memory.
Each image has a separate data area:
Image_Address.img dc.w X_Size (Width in words = pixel size/16) dc.w V_Size Height in lines dc.w Number_Of_Planes Number of planes (1 to 6) dc.w Hot_Spot_X OR Flipping_Flags Holds X control point + extra flags dc.w Hot_Spot_V * Image data REPT Number_Of_Planes dcb.w X_Size * Y_Size ENDR
The image definition is merely a small bitmap containing the actual picture. The planes are stored one after another, starling from plane 0.