snake6502/src/data.asm

71 lines
917 B
NASM

SEG.U dataSegment
; Number of interrupt
; Used as counter to be decremented to do some things less frequently
irqn:
BYTE
; Direction of the snake (2,4,6,8 as down,left,right,up)
; 5 means `pause`
direction:
BYTE
; Snake head coordinates in video memory
snakeX:
BYTE
snakeY:
BYTE
; Parameters for calcTileMem
calcTileX:
BYTE
calcTileY:
BYTE
; List start and length
listStart:
BYTE
length:
BYTE
; Random value
random:
BYTE
; Status
status:
BYTE
; Level temporary vars
levelT:
BYTE
levelN:
BYTE
; next status after delay
delayStatus:
BYTE
; Total score of the game
score:
WORD
; vertical scroll intro
introYscroll:
BYTE
; interrupt raster line to draw moustache
moustacheLine:
BYTE
; horizontal intro scroll
XScrollOffset:
BYTE
XScrollDirection:
BYTE
XCharOffset:
BYTE
; Lists for snake head and tail
listX DS 256
listY DS 256