dos33fsprogs/monkey/monkey_lookout.s

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; if 28<x<35 and y>=28 and direction==down
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; goto MONKEY_POSTER
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; at location 4,20
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lookout_check_exit:
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lda GUYBRUSH_Y
cmp #24
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bcc lookout_no_exit
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lda GUYBRUSH_DIRECTION
cmp #DIR_DOWN
bne lookout_no_exit
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lda GUYBRUSH_X
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cmp #28
bcc lookout_no_exit
cmp #35
bcs lookout_no_exit
lda #MONKEY_POSTER
sta LOCATION
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lda #4
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sta GUYBRUSH_X
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sta DESTINATION_X
lda #20
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sta GUYBRUSH_Y
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sta DESTINATION_Y
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jsr change_location
lookout_no_exit:
rts
lookout_adjust_destination:
ld_check_x:
lda DESTINATION_X
cmp #19
bcc ld_x_too_small
cmp #35
bcs ld_x_too_big
jmp ld_check_y
ld_x_too_big:
lda #35
sta DESTINATION_X
bne ld_check_y
ld_x_too_small:
lda #18
sta DESTINATION_X
ld_check_y:
; if x < 28, Y must be between 16 and 18
; if x < 35, Y must be between 8 and 28
lda DESTINATION_Y
cmp #16
bcc ld_y_too_small
rts
ld_y_too_small:
lda #16
sta DESTINATION_Y
done_ld_adjust:
rts
draw_fire:
lda FRAMEL
and #$18
lsr
lsr
tay
lda fire_sprites,Y
sta INL
lda fire_sprites+1,Y
sta INH
lda #16
sta XPOS
lda #18
sta YPOS
jsr put_sprite_crop
rts
fire_sprites:
.word fire1_sprite
.word fire2_sprite
.word fire3_sprite
.word fire2_sprite
fire1_sprite:
.byte 2,4
.byte $dA,$AA
.byte $dd,$9A
.byte $99,$dd
.byte $dd,$dd
fire2_sprite:
.byte 2,4
.byte $AA,$AA
.byte $dd,$dd
.byte $9d,$99
.byte $dd,$dd
fire3_sprite:
.byte 2,4
.byte $AA,$aa
.byte $9A,$dd
.byte $d9,$9d
.byte $dd,$dd
draw_wall:
lda #<wall_sprite
sta INL
lda #>wall_sprite
sta INH
lda #18
sta XPOS
lda #22
sta YPOS
jsr put_sprite_crop
rts
wall_sprite:
.byte 9,6
.byte $AA,$AA,$8A,$0A,$5A,$AA,$AA,$AA,$AA
.byte $AA,$8A,$50,$05,$60,$AA,$AA,$6A,$6A
.byte $58,$08,$55,$60,$60,$AA,$AA,$66,$60
.byte $06,$66,$26,$00,$66,$AA,$AA,$66,$00
.byte $06,$05,$65,$60,$50,$5A,$5A,$66,$00
.byte $00,$60,$00,$60,$06,$60,$06,$06,$06