Added routine for full reset of the game
This commit is contained in:
parent
95ae7e2ab4
commit
6bb4a5151a
34
snake.asm
34
snake.asm
@ -23,17 +23,17 @@ sidtune:
|
||||
; Number of interrupt
|
||||
; Used as counter to be decremented to do some things less frequently
|
||||
irqn:
|
||||
BYTE #4
|
||||
BYTE
|
||||
|
||||
; Direction of the snake (2,4,6,8 as down,left,right,up)
|
||||
direction:
|
||||
BYTE #6
|
||||
BYTE
|
||||
|
||||
; Snake head coordinates in video memory
|
||||
snakeX:
|
||||
BYTE #19
|
||||
BYTE
|
||||
snakeY:
|
||||
BYTE #12
|
||||
BYTE
|
||||
|
||||
; Parameters for calcTileMem
|
||||
calcTileX:
|
||||
@ -43,9 +43,9 @@ calcTileY:
|
||||
|
||||
; List start and length
|
||||
listStart:
|
||||
BYTE #5
|
||||
BYTE
|
||||
length:
|
||||
BYTE #5
|
||||
BYTE
|
||||
|
||||
; Random value
|
||||
random:
|
||||
@ -76,11 +76,9 @@ gameoverString:
|
||||
; ----------------------------------------------------------------------
|
||||
. = $2200
|
||||
listX:
|
||||
BYTE #19
|
||||
|
||||
. = $2300
|
||||
listY:
|
||||
BYTE #12
|
||||
|
||||
; ENTRY OF PROGRAM
|
||||
; ----------------------------------------------------------------------
|
||||
@ -150,12 +148,32 @@ upperbarLoop:
|
||||
; Enable interrupts
|
||||
cli
|
||||
|
||||
jsr fullreset
|
||||
|
||||
; Endless loop, show that there is enogh time after the interrupt
|
||||
endless:
|
||||
ldx $400
|
||||
inx
|
||||
stx $400
|
||||
jmp endless
|
||||
brk
|
||||
|
||||
; Full reset
|
||||
; ----------------------------------------------------------------------
|
||||
fullreset:
|
||||
lda #4
|
||||
sta irqn
|
||||
lda #6
|
||||
sta direction
|
||||
lda #19
|
||||
sta snakeX
|
||||
lda #12
|
||||
sta snakeY
|
||||
lda #5
|
||||
sta listStart
|
||||
lda #5
|
||||
sta length
|
||||
rts
|
||||
|
||||
; Interrupt Handler
|
||||
; ----------------------------------------------------------------------
|
||||
|
Loading…
Reference in New Issue
Block a user