477 lines
7.1 KiB
ArmAsm
477 lines
7.1 KiB
ArmAsm
|
|
; FIXME, if beast gets close and you pull away, it should trip
|
|
|
|
;=======================================
|
|
;=======================================
|
|
; Setup Beast Running -- for each room
|
|
;=======================================
|
|
;=======================================
|
|
|
|
setup_beast:
|
|
; only move beast if out
|
|
|
|
lda BEAST_OUT
|
|
beq setup_no_beast
|
|
|
|
; have the beast wait standing offscreen a bit??
|
|
; what were you thinking, 6-months-ago Vince?
|
|
|
|
lda #30
|
|
sta BEAST_COUNT
|
|
lda #B_STANDING
|
|
sta BEAST_STATE
|
|
|
|
; set Y position
|
|
lda #26
|
|
sta BEAST_Y
|
|
|
|
|
|
; what we do is based on direction
|
|
lda BEAST_DIRECTION
|
|
beq setup_beast_left
|
|
|
|
setup_beast_right:
|
|
; after rope scene, put beast further back so you
|
|
; have time to run a bit
|
|
|
|
lda WHICH_CAVE
|
|
cmp #4
|
|
beq beast_right_rope
|
|
|
|
jmp beast_right_set_normal
|
|
|
|
beast_right_rope:
|
|
lda #240
|
|
jmp beast_right_set_x
|
|
|
|
; adjust for distance
|
|
beast_right_set_normal:
|
|
lda BEAST_X
|
|
bpl right_set_not_neg ; how fast are you?
|
|
lda #0
|
|
right_set_not_neg:
|
|
lsr
|
|
lsr
|
|
adc #236 ;
|
|
|
|
beast_right_set_x:
|
|
sta BEAST_X
|
|
jmp setup_no_beast
|
|
|
|
;==============================
|
|
; running left
|
|
setup_beast_left:
|
|
|
|
; adjust for how far was on last screen
|
|
; /4
|
|
lda BEAST_X
|
|
lsr
|
|
lsr
|
|
|
|
clc
|
|
adc #40
|
|
sta BEAST_X
|
|
|
|
setup_no_beast:
|
|
rts
|
|
|
|
;=======================================
|
|
;=======================================
|
|
; Move Beast
|
|
;=======================================
|
|
;=======================================
|
|
; stop if catch physicist
|
|
; also stop if swinging
|
|
; run just every slightly faster than physicist
|
|
|
|
move_beast:
|
|
lda BEAST_STATE
|
|
cmp #B_RUNNING
|
|
beq move_beast_running
|
|
cmp #B_STANDING
|
|
beq move_beast_standing
|
|
rts
|
|
|
|
;======================
|
|
; running
|
|
move_beast_running:
|
|
|
|
;=======================
|
|
; stop at edge or at physicist
|
|
|
|
lda BEAST_DIRECTION
|
|
beq check_beast_left
|
|
|
|
check_beast_right:
|
|
; Bbbb^b
|
|
; Pp^pp
|
|
; if (B+6)==P
|
|
; if B=P-6
|
|
sec
|
|
lda PHYSICIST_X
|
|
sbc #$6
|
|
cmp BEAST_X
|
|
bne beast_no_stop
|
|
beq beast_caught
|
|
|
|
check_beast_left:
|
|
|
|
; stop if in rope room and at edge
|
|
|
|
lda WHICH_CAVE
|
|
cmp #3
|
|
bne beast_not_rope_room
|
|
beast_rope_room:
|
|
lda BEAST_X
|
|
cmp #11
|
|
bcs beast_not_rope_room ; bge
|
|
|
|
lda #B_STANDING
|
|
sta BEAST_STATE
|
|
|
|
lda #0
|
|
sta BEAST_COUNT
|
|
rts
|
|
|
|
beast_not_rope_room:
|
|
|
|
; no attack if swinging
|
|
lda PHYSICIST_STATE
|
|
cmp #P_SWINGING
|
|
beq skip_if_swinging
|
|
|
|
; Pp^pp Bbbbbb
|
|
; if B=p
|
|
clc
|
|
lda PHYSICIST_X
|
|
adc #$2
|
|
cmp BEAST_X
|
|
|
|
bne beast_no_stop
|
|
beq beast_caught
|
|
|
|
skip_if_swinging:
|
|
|
|
beast_no_stop:
|
|
inc BEAST_GAIT ; cycle through animation
|
|
|
|
lda BEAST_GAIT
|
|
and #$7
|
|
cmp #5
|
|
beq b_run
|
|
and #$3 ; only run roughly 3/8 of time
|
|
bne b_no_move_run
|
|
|
|
b_run:
|
|
lda BEAST_DIRECTION
|
|
beq b_run_left
|
|
|
|
inc BEAST_X ; run right
|
|
rts
|
|
b_run_left:
|
|
dec BEAST_X ; run left
|
|
b_no_move_run:
|
|
rts
|
|
|
|
|
|
beast_caught:
|
|
jmp beast_slash_cutscene
|
|
|
|
|
|
|
|
;======================
|
|
; standing
|
|
|
|
; need to check for collision here so physicist
|
|
; doesn't just run past beast at arrival
|
|
|
|
move_beast_standing:
|
|
lda BEAST_COUNT
|
|
beq beast_stand_done ; if 0, perma-stand
|
|
|
|
dec BEAST_COUNT
|
|
bne beast_stand_done
|
|
|
|
lda #B_RUNNING
|
|
sta BEAST_STATE
|
|
|
|
beast_stand_done:
|
|
|
|
lda PHYSICIST_X
|
|
cmp BEAST_X
|
|
|
|
bne p_not_foolish
|
|
|
|
jmp beast_slash_cutscene
|
|
|
|
p_not_foolish:
|
|
rts
|
|
|
|
;======================================
|
|
;======================================
|
|
; draw beast
|
|
;======================================
|
|
;======================================
|
|
|
|
draw_beast:
|
|
|
|
lda BEAST_STATE
|
|
cmp #B_STANDING
|
|
beq b_standing
|
|
cmp #B_RUNNING
|
|
beq b_running
|
|
rts
|
|
|
|
|
|
;==================================
|
|
; STANDING
|
|
;==================================
|
|
|
|
b_standing:
|
|
|
|
lda #<beast_standing
|
|
sta INL
|
|
|
|
lda #>beast_standing
|
|
sta INH
|
|
|
|
jmp finally_draw_beast
|
|
|
|
;===============================
|
|
; Running
|
|
;================================
|
|
|
|
b_running:
|
|
lda BEAST_GAIT
|
|
cmp #18
|
|
bcc brun_gait_fine ; blt
|
|
|
|
lda #0
|
|
sta BEAST_GAIT
|
|
|
|
brun_gait_fine:
|
|
; lsr
|
|
and #$fe
|
|
|
|
tax
|
|
|
|
lda beast_run_progression,X
|
|
sta INL
|
|
|
|
lda beast_run_progression+1,X
|
|
sta INH
|
|
|
|
jmp finally_draw_beast
|
|
|
|
|
|
;=============================
|
|
; Actually Draw Beast
|
|
;=============================
|
|
|
|
finally_draw_beast:
|
|
lda BEAST_X
|
|
sta XPOS
|
|
|
|
lda BEAST_Y ; was 26
|
|
sec
|
|
sbc EARTH_OFFSET ; adjust for earthquakes
|
|
sta YPOS
|
|
|
|
lda BEAST_DIRECTION
|
|
bne b_facing_right
|
|
|
|
b_facing_left:
|
|
jmp put_sprite_crop
|
|
|
|
b_facing_right:
|
|
jmp put_sprite_flipped_crop
|
|
|
|
|
|
|
|
|
|
|
|
;========================
|
|
;========================
|
|
; beast arrival cutscene
|
|
;========================
|
|
;========================
|
|
beast_arrival_cutscene:
|
|
|
|
;====================
|
|
; beast dropping in
|
|
|
|
lda #$8
|
|
sta DRAW_PAGE
|
|
jsr clear_top
|
|
|
|
lda #<beast_background
|
|
sta INL
|
|
lda #>beast_background
|
|
sta INH
|
|
|
|
lda #15
|
|
sta XPOS
|
|
|
|
lda #10
|
|
sta YPOS
|
|
|
|
jsr put_sprite
|
|
|
|
lda #$0
|
|
sta DRAW_PAGE
|
|
|
|
jsr gr_copy_to_current
|
|
jsr page_flip
|
|
jsr gr_copy_to_current
|
|
jsr page_flip
|
|
|
|
ldx #0
|
|
stx CUTFRAME
|
|
beast_loop:
|
|
jsr gr_copy_to_current
|
|
|
|
ldx CUTFRAME
|
|
|
|
lda beast_frames,X
|
|
sta INL
|
|
lda beast_frames+1,X
|
|
sta INH
|
|
|
|
lda #15
|
|
sta XPOS
|
|
|
|
lda #10
|
|
sta YPOS
|
|
|
|
jsr put_sprite
|
|
|
|
jsr page_flip
|
|
|
|
ldx #2
|
|
beast_long_delay:
|
|
lda #250
|
|
jsr WAIT
|
|
dex
|
|
bne beast_long_delay
|
|
|
|
|
|
ldx CUTFRAME
|
|
inx
|
|
inx
|
|
stx CUTFRAME
|
|
|
|
cpx #28
|
|
beq beast_end
|
|
|
|
jmp beast_loop
|
|
|
|
beast_end:
|
|
|
|
;=============================
|
|
; Restore background to $c00
|
|
|
|
lda #<(cavern3_lzsa)
|
|
sta getsrc_smc+1 ; LZSA_SRC_LO
|
|
lda #>(cavern3_lzsa)
|
|
sta getsrc_smc+2 ; LZSA_SRC_HI
|
|
|
|
lda #$c ; load image off-screen $c00
|
|
jmp decompress_lzsa2_fast
|
|
|
|
beast_frames:
|
|
.word beast_frame1 ; 0
|
|
.word beast_frame2 ; 1
|
|
.word beast_frame3 ; 2
|
|
.word beast_frame4 ; 3
|
|
.word beast_frame5 ; 4
|
|
.word beast_frame6 ; 5
|
|
.word beast_frame7 ; 6
|
|
.word beast_frame8 ; 7
|
|
.word beast_frame9 ; 8
|
|
.word beast_frame10 ; 9
|
|
.word beast_frame11 ; 10
|
|
.word beast_frame12 ; 11
|
|
.word beast_frame8 ; 12
|
|
.word beast_frame8 ; 13
|
|
|
|
|
|
|
|
|
|
;========================
|
|
;========================
|
|
; beast slash cutscene
|
|
;========================
|
|
;========================
|
|
beast_slash_cutscene:
|
|
|
|
lda #<beast_bg_lzsa
|
|
sta getsrc_smc+1 ; LZSA_SRC_LO
|
|
lda #>beast_bg_lzsa
|
|
sta getsrc_smc+2 ; LZSA_SRC_HI
|
|
|
|
lda #$c
|
|
jsr decompress_lzsa2_fast
|
|
|
|
ldx #0h
|
|
|
|
beast_slash_loop:
|
|
lda beast_slash_frames,X
|
|
sta getsrc_smc+1 ; LZSA_SRC_LO
|
|
lda beast_slash_frames+1,X
|
|
sta getsrc_smc+2 ; LZSA_SRC_HI
|
|
|
|
txa
|
|
pha
|
|
|
|
lda #$10
|
|
jsr decompress_lzsa2_fast
|
|
|
|
jsr gr_overlay
|
|
|
|
lda #200
|
|
jsr WAIT
|
|
|
|
jsr page_flip
|
|
|
|
|
|
|
|
pla
|
|
tax
|
|
|
|
inx
|
|
inx
|
|
cmp #40
|
|
bne beast_slash_loop
|
|
|
|
beast_slash_end:
|
|
|
|
lda #$ff
|
|
sta GAME_OVER
|
|
|
|
rts
|
|
|
|
|
|
beast_slash_frames:
|
|
.word beast_slash07_lzsa ; 0
|
|
.word beast_slash08_lzsa ; 1
|
|
.word beast_slash09_lzsa ; 2
|
|
.word beast_slash10_lzsa ; 3
|
|
.word beast_slash11_lzsa ; 4
|
|
.word beast_slash12_lzsa ; 5
|
|
.word beast_slash13_lzsa ; 6
|
|
.word beast_slash14_lzsa ; 7
|
|
.word beast_slash15_lzsa ; 8
|
|
.word beast_slash16_lzsa ; 9
|
|
.word beast_slash17_lzsa ; 10
|
|
.word beast_slash18_lzsa ; 11
|
|
.word beast_slash19_lzsa ; 12
|
|
.word beast_slash20_lzsa ; 13
|
|
.word beast_slash20_lzsa ; 14
|
|
.word beast_slash20_lzsa ; 15
|
|
.word beast_slash20_lzsa ; 16
|
|
.word beast_slash20_lzsa ; 17
|
|
.word beast_slash20_lzsa ; 18
|
|
.word beast_slash20_lzsa ; 19
|
|
.word beast_slash20_lzsa ; 20
|
|
|