2010-03-06, 01:59 PM
Even more optimized:
The fspUpdateAsm routine can be optimized to this (please, click on the "Expand View" button on the right side of this message ==>)
Compare this routine with the previous one. I think this one is quite optimal (if not already). This should be done in all the code.
The fspUpdateAsm routine can be optimized to this (please, click on the "Expand View" button on the right side of this message ==>)
Code:
SUB fastcall fspUpdate : REM This name will be used from BASIC
asm
fspUpdateAsm: ; This name will be used from ASM
update_coordinates:
ld hl, datap+4 ; Points to data address
ld d, h
ld e, l ; idem
ld b, 4 ; 4 iterations
i4chars4:
;; For each Sprite:
;; *(datap + 6) = *(datap + 4)
;; *(datap + 7) = *(datap + 5)
inc de
inc de
ldi
inc bc ; Restores BC
ldi
inc bc ; Restores BC
;; hl = hl + 40
ld hl, 44
add hl, de
ld d, h ; DE = HL
ld e, l
djnz i4chars4
END ASM
END SUB : REM There is an implicit RET hereCompare this routine with the previous one. I think this one is quite optimal (if not already). This should be done in all the code.