493 lines
7.0 KiB
ArmAsm
493 lines
7.0 KiB
ArmAsm
; draw/move our friend
|
|
|
|
friend_room: .byte 0 ; $FF means not out
|
|
friend_x: .byte 0
|
|
friend_y: .byte 0
|
|
friend_state: .byte 0
|
|
friend_gait: .byte 0
|
|
friend_direction: .byte 0
|
|
friend_ai_state: .byte 0
|
|
|
|
FAI_FOLLOWING = 0
|
|
FAI_RUNTO_PANEL = 1
|
|
FAI_OPENING_PANEL = 2
|
|
FAI_DISINTEGRATING = 3
|
|
FAI_END_L2 = 4
|
|
|
|
|
|
F_STANDING = 0
|
|
F_WALKING = 1
|
|
F_RUNNING = 2
|
|
F_CROUCHING = 3
|
|
F_TURNING = 4
|
|
F_KEYPAD = 5
|
|
F_OPEN_VENT = 6
|
|
F_DISINTEGRATING= 7
|
|
|
|
fai_table_lo:
|
|
.byte <friend_ai_following ; 00
|
|
.byte <friend_ai_runto_panel ; 01
|
|
.byte <friend_ai_opening_panel ; 02
|
|
.byte <friend_ai_disintegrating ; 03
|
|
.byte <friend_ai_end_l2 ; 04
|
|
|
|
fai_table_hi:
|
|
.byte >friend_ai_following ; 00
|
|
.byte >friend_ai_runto_panel ; 01
|
|
.byte >friend_ai_opening_panel ; 02
|
|
.byte >friend_ai_disintegrating ; 03
|
|
.byte >friend_ai_end_l2 ; 04
|
|
|
|
|
|
;=======================================
|
|
; Process friend AI
|
|
;
|
|
|
|
handle_friend_ai:
|
|
|
|
lda friend_ai_state
|
|
tay
|
|
lda fai_table_lo,y
|
|
sta fjump
|
|
lda fai_table_hi,y
|
|
sta fjump+1
|
|
jmp (fjump)
|
|
|
|
rts
|
|
|
|
friend_ai_end_l2:
|
|
; FAI_END_L2
|
|
; crouch, holding panel open
|
|
rts
|
|
|
|
friend_ai_following:
|
|
; FAI_FOLLOWING
|
|
; if x> phys_x by more than 8, walk left
|
|
; if x< phys_x by more than 8, walk right
|
|
|
|
friend_ai_runto_panel:
|
|
; FAI_RUNTO_PANEL
|
|
; otherwise, if not in ROOM#2, run right
|
|
; if in room#2, run to panel
|
|
|
|
lda #1
|
|
sta friend_direction
|
|
|
|
lda #F_RUNNING
|
|
sta friend_state
|
|
|
|
lda WHICH_ROOM
|
|
cmp #3
|
|
bne ai_runto_panel_done
|
|
|
|
lda friend_x
|
|
cmp #30
|
|
bcc ai_runto_panel_done
|
|
|
|
; hack, if running stop wrong place?
|
|
lda #31
|
|
sta friend_x
|
|
|
|
lda #FAI_OPENING_PANEL
|
|
sta friend_ai_state
|
|
|
|
lda #0
|
|
sta friend_direction
|
|
|
|
ai_runto_panel_done:
|
|
jmp friend_ai_done
|
|
|
|
friend_ai_opening_panel:
|
|
; FAI_OPENING_PANEL
|
|
; if door2 unlocked -> FAI_FOLLOWING
|
|
|
|
; FIXME: open panel for a bit, then open door and continue
|
|
lda #F_KEYPAD
|
|
sta friend_state
|
|
|
|
friend_ai_disintegrating:
|
|
friend_ai_done:
|
|
rts
|
|
|
|
|
|
;=======================================
|
|
; Move friend based on current state
|
|
;
|
|
|
|
move_friend:
|
|
lda friend_room
|
|
cmp WHICH_ROOM
|
|
bne done_move_friend
|
|
|
|
jsr handle_friend_ai
|
|
|
|
lda friend_state
|
|
beq done_move_friend
|
|
|
|
lda friend_state
|
|
|
|
cmp #F_WALKING
|
|
beq move_friend_walking
|
|
cmp #F_RUNNING
|
|
beq move_friend_running
|
|
|
|
done_move_friend:
|
|
rts
|
|
|
|
;======================
|
|
; walking
|
|
|
|
move_friend_walking:
|
|
inc friend_gait ; cycle through animation
|
|
|
|
lda friend_gait
|
|
and #$f
|
|
cmp #$8 ; only walk roughly 1/8 of time
|
|
bne friend_no_move_walk
|
|
|
|
lda friend_direction
|
|
beq f_walk_left
|
|
|
|
inc friend_x ; walk right
|
|
rts
|
|
f_walk_left:
|
|
dec friend_x ; walk left
|
|
friend_no_move_walk:
|
|
rts
|
|
|
|
;======================
|
|
; running
|
|
move_friend_running:
|
|
inc friend_gait ; cycle through animation
|
|
|
|
lda friend_gait
|
|
and #$7
|
|
cmp #5 ; only run roughly 3/8 of time
|
|
bcc friend_no_move_run
|
|
|
|
lda friend_direction
|
|
beq f_run_left
|
|
|
|
inc friend_x ; run right
|
|
jmp friend_running_check_limits
|
|
f_run_left:
|
|
dec friend_x ; run left
|
|
friend_no_move_run:
|
|
|
|
friend_running_check_limits:
|
|
lda friend_x
|
|
cmp #39
|
|
bcc friend_done_running ; blt
|
|
|
|
; move to next room
|
|
lda #0
|
|
sta friend_x
|
|
|
|
inc friend_room
|
|
|
|
friend_done_running:
|
|
rts
|
|
|
|
;======================
|
|
; standing
|
|
|
|
move_friend_standing:
|
|
|
|
|
|
|
|
|
|
|
|
fstate_table_lo:
|
|
.byte <friend_standing ; 00
|
|
.byte <friend_walking ; 01
|
|
.byte <friend_running ; 02
|
|
.byte <friend_crouching ; 03
|
|
.byte <friend_turning ; 04
|
|
.byte <friend_keypad ; 05 KEYPAD
|
|
.byte <friend_open_vent ; 06
|
|
.byte <friend_disintegrating ; 07
|
|
|
|
fstate_table_hi:
|
|
.byte >friend_standing ; 00
|
|
.byte >friend_walking ; 01
|
|
.byte >friend_running ; 02
|
|
.byte >friend_crouching ; 03
|
|
.byte >friend_turning ; 04
|
|
.byte >friend_keypad ; 05 KEYPAD
|
|
.byte >friend_open_vent ; 06
|
|
.byte >friend_disintegrating ; 07
|
|
|
|
; Urgh, make sure this doesn't end up at $FF or you hit the
|
|
; NMOS 6502 bug
|
|
|
|
.align 2
|
|
|
|
fjump:
|
|
.word $0000
|
|
.align 1
|
|
|
|
;======================================
|
|
; draw friend
|
|
;======================================
|
|
|
|
draw_friend:
|
|
|
|
lda friend_room
|
|
cmp WHICH_ROOM
|
|
bne no_friend
|
|
|
|
lda friend_state
|
|
tay
|
|
lda fstate_table_lo,y
|
|
sta fjump
|
|
lda fstate_table_hi,y
|
|
sta fjump+1
|
|
jmp (fjump)
|
|
|
|
no_friend:
|
|
rts
|
|
|
|
;==================================
|
|
; STANDING
|
|
;==================================
|
|
|
|
friend_standing:
|
|
|
|
lda #<friend_stand
|
|
sta INL
|
|
|
|
lda #>friend_stand
|
|
sta INH
|
|
|
|
jmp finally_draw_friend
|
|
|
|
|
|
;===================================
|
|
; CROUCHING
|
|
;===================================
|
|
|
|
friend_crouching:
|
|
|
|
; FIXME: we have an animation?
|
|
|
|
lda #<friend_crouch2
|
|
sta INL
|
|
|
|
lda #>friend_crouch2
|
|
sta INH
|
|
|
|
jmp finally_draw_friend
|
|
|
|
;===================================
|
|
; OPEN_VENT
|
|
;===================================
|
|
|
|
friend_open_vent:
|
|
|
|
; draw vent -- HACK
|
|
|
|
lda #1
|
|
sta VENT_OPEN
|
|
|
|
lda #$00
|
|
sta COLOR
|
|
|
|
; X, V2 at Y
|
|
; from x=top, v2=bottom
|
|
|
|
|
|
ldy #18
|
|
lda #48
|
|
sta V2
|
|
ldx #24
|
|
jsr vlin
|
|
|
|
ldy #19
|
|
lda #48
|
|
sta V2
|
|
ldx #24
|
|
jsr vlin
|
|
|
|
|
|
|
|
lda #21
|
|
sta friend_x
|
|
lda #8
|
|
sta friend_y
|
|
|
|
lda #<friend_crouch2
|
|
sta INL
|
|
|
|
lda #>friend_crouch2
|
|
sta INH
|
|
|
|
jmp finally_draw_friend
|
|
|
|
|
|
|
|
;===============================
|
|
; Walking
|
|
;================================
|
|
|
|
friend_walking:
|
|
lda friend_gait
|
|
cmp #64
|
|
bcc friend_gait_fine ; blt
|
|
|
|
lda #0
|
|
sta friend_gait
|
|
|
|
friend_gait_fine:
|
|
lsr
|
|
lsr
|
|
and #$fe
|
|
|
|
tay
|
|
|
|
lda friend_walk_progression,Y
|
|
sta INL
|
|
|
|
lda friend_walk_progression+1,Y
|
|
sta INH
|
|
|
|
jmp finally_draw_friend
|
|
|
|
;===============================
|
|
; Running
|
|
;================================
|
|
|
|
friend_running:
|
|
lda friend_gait
|
|
cmp #32
|
|
bcc friend_run_gait_fine ; blt
|
|
|
|
lda #0
|
|
sta friend_gait
|
|
|
|
friend_run_gait_fine:
|
|
lsr
|
|
and #$fe
|
|
|
|
tay
|
|
|
|
lda friend_run_progression,Y
|
|
sta INL
|
|
|
|
lda friend_run_progression+1,Y
|
|
sta INH
|
|
|
|
jmp finally_draw_friend
|
|
|
|
;===============================
|
|
; Turning
|
|
;================================
|
|
|
|
friend_turning:
|
|
|
|
dec friend_gait
|
|
bpl friend_draw_turning
|
|
|
|
lda #0
|
|
sta friend_gait
|
|
|
|
; switch direction
|
|
lda friend_direction
|
|
eor #$1
|
|
sta friend_direction
|
|
|
|
lda #F_WALKING
|
|
sta friend_state
|
|
|
|
friend_draw_turning:
|
|
lda #<friend_turning_sprite
|
|
sta INL
|
|
|
|
lda #>friend_turning_sprite
|
|
sta INH
|
|
|
|
jmp finally_draw_friend
|
|
|
|
|
|
;===============================
|
|
; Using Keypad
|
|
;================================
|
|
|
|
friend_keypad:
|
|
|
|
inc friend_gait
|
|
|
|
lda friend_gait
|
|
and #$10
|
|
lsr
|
|
lsr
|
|
lsr
|
|
tay
|
|
|
|
friend_draw_keypad:
|
|
lda friend_keypad_progression,Y
|
|
sta INL
|
|
|
|
lda friend_keypad_progression+1,Y
|
|
sta INH
|
|
|
|
jmp finally_draw_friend
|
|
|
|
;===============================
|
|
; Disintegrating
|
|
;================================
|
|
|
|
friend_disintegrating:
|
|
lda friend_gait
|
|
cmp #13
|
|
bne friend_keep_disintegrating
|
|
|
|
lda #$ff
|
|
sta friend_room
|
|
|
|
rts
|
|
|
|
friend_keep_disintegrating:
|
|
asl
|
|
tay
|
|
|
|
; re-use alien sprites
|
|
|
|
lda alien_disintegrating_progression,Y
|
|
sta INL
|
|
|
|
lda alien_disintegrating_progression+1,Y
|
|
sta INH
|
|
|
|
lda FRAMEL
|
|
and #$7
|
|
bne slow_friend_disintegration
|
|
|
|
inc friend_gait
|
|
slow_friend_disintegration:
|
|
|
|
jmp finally_draw_friend
|
|
|
|
|
|
|
|
;=============================
|
|
; Actually Draw Friend
|
|
;=============================
|
|
|
|
|
|
finally_draw_friend:
|
|
lda friend_x
|
|
sta XPOS
|
|
|
|
lda friend_y
|
|
sta YPOS
|
|
|
|
lda friend_direction
|
|
bne friend_facing_right
|
|
|
|
friend_facing_left:
|
|
jmp put_sprite_crop
|
|
|
|
friend_facing_right:
|
|
jmp put_sprite_flipped_crop
|
|
|