Routines
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48214: Print Sprites
Used by the routines at DrawPanel and PrintBorder.
Prints the sprite of an object a number of times, moving the pixel position of the object by a step each time, so that it makes a row of sprites. BC, DE and HL are preserved while each sprite is printed.
Input
B Number of times
D Step along the y axis in pixels
E Step along the x axis in pixels
IX The address of the object
Print one sprite and step the position.
PrintSprites 48214 PUSH BC Stash BC, DE and HL on the stack.
48215 PUSH DE
48216 PUSH HL
48217 CALL PrintSprite Call PrintSprite.
48220 POP HL Restore HL, DE and BC from the stack.
48221 POP DE
48222 POP BC
48223 LD A,(IX+26) Fetch the pixel x position of the object.
48226 ADD A,E Add the step along the x axis.
48227 LD (IX+26),A Set the pixel x position of the object.
48230 LD A,(IX+27) Fetch the pixel y position of the object.
48233 ADD A,D Add the step along the y axis.
48234 LD (IX+27),A Set the pixel y position of the object.
48237 DJNZ PrintSprites Jump to PrintSprites until all of the sprites have been printed.
48239 RET Return.
View the equivalent code in;
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