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ffight_ae_middledemos_hijacks.asm
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ffight_ae_middledemos_hijacks.asm
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; ============================================
xmiddledemos_playerassign:
move.w #p3_main_mem, D1 ; 3p ram as leader
move.w #p2_main_mem, D2 ; 2p ram as follower1
tst.b (A5,D1.w) ; check if leader is active
beq xmiddledemos_playerassign_leaderinactive
addi #$13, D1 ; increment leader address to player number ID
move.b ($13,A6), D4 ; Load current player's player number ID
move.b (A5,D1.w), D5
cmp.b D4, D5
bne xmiddledemos_playerassign_notleader ; branch if leader active and this player != leader
move.b #0, ($91,a6) ; This player is the leader!
rts
xmiddledemos_playerassign_leaderinactive: ; Leader is dead, but you and at least one other player are still alive.
tst.b (A5,D2.w) ; Check if follower1 is available.
beq xmiddledemos_playerassign_leaderinactive_newleader ; If leader and follower1 are both inactive, current player is leader by default.
addi #$13, D2 ; increment follower1 address to player number ID
move.b ($13,A6), D4 ; Load current player's player number ID
move.b (A5,D2.w), D5
cmp.b D4, D5
bne xmiddledemos_playerassign_leaderinactive_isfollower
xmiddledemos_playerassign_leaderinactive_newleader:
move.b #00, ($91,a6)
rts
xmiddledemos_playerassign_leaderinactive_isfollower:
move.b #$FF, ($91,a6)
rts
xmiddledemos_playerassign_notleader: ; Leader is alive, but you ain't him.
move.b #$FF, ($91,a6)
rts
; ============================================
xvscroll_type1_2_2_4_2_playervpos:
move.l ($80,A6), D0
add.l D0, ($572,A5)
add.l D0, ($576,A5)
add.l D0, ($632,A5)
add.l D0, ($636,A5)
add.l D0, ($66F2,A5)
add.l D0, ($66F6,A5)
add.l D0, ($a,A6)
lsr.l #7, D0
sub.l D0, ($572,A5)
sub.l D0, ($576,A5)
sub.l D0, ($632,A5)
sub.l D0, ($636,A5)
sub.l D0, ($66F2,A5)
sub.l D0, ($66F6,A5)
sub.l D0, ($a,A6)
rts
; ============================================
xmiddledemos_4_6:
tst.b ($a6,A6)
beq xmiddledemos_4_6_elevstop
jsr $cc72
jsr $cc42
tst.b ($a6,A6)
bne xmiddledemos_4_6_return
move.b #$0, ($2e,A6)
jmp $c47a.l ; player_start_or_stop_walking
xmiddledemos_4_6_elevstop:
bsr xmiddledemos_solocheck
beq xmiddledemos_4_6_issolo
tst.b ($91,A6)
beq xmiddledemos_4_6_isleader
xmiddledemos_4_6_issolo:
jsr $cc1a
bne xmiddledemos_4_6_return
move.b #$1, ($56b2,A5)
move.b #$1, (-$6dfe,A5)
bra xmiddledemos_4_6_nextstate
xmiddledemos_4_6_isleader:
tst.b (-$6dfe,A5)
beq xmiddledemos_4_6_return
clr.b (-$6dfe,A5)
xmiddledemos_4_6_nextstate:
move.b #$8, ($4,A6)
xmiddledemos_4_6_return:
rts
; ============================================
xmiddledemos_4_C:
tst.b ($a6,A6)
beq xmiddledemos_4_C_donewalking
jsr $3146.w ; demo_player_movement
jsr $3b02.w ; entity_play_anim
move.l ($a,A6), ($e,A6)
move.w ($6,A6), D0
subi.w #$6b0, D0
cmpi.w #$b8, D0
bcs xmiddledemos_4_C_return
clr.b ($a6,A6)
jsr $c47a.l ;player_start_or_stop_walking
xmiddledemos_4_C_donewalking:
bsr xmiddledemos_solocheck
beq xmiddledemos_4_C_issolo
tst.b ($91,A6)
beq xmiddledemos_4_C_isleader
xmiddledemos_4_C_issolo:
jsr $cc1a
bne xmiddledemos_4_C_return
move.b #$1, ($56b2,A5)
move.b #$1, (-$6dfe,A5)
bra xmiddledemos_4_C_nextstate
xmiddledemos_4_C_isleader:
tst.b (-$6dfe,A5)
beq xmiddledemos_4_C_return
clr.b (-$6dfe,A5)
xmiddledemos_4_C_nextstate:
move.b #$e, ($4,A6)
xmiddledemos_4_C_return:
rts
; ============================================
; A hacky attempt at fixing the Uptown elevator demo if only one player is playing
; Returns 0 if player is the only one alive, else returns 1
xmiddledemos_solocheck
moveq #0, D0
move.b ($13,A6), D0
asl #$2, D0
lea (tbl_xmiddledemo_otherplayers), A0
adda.w D0, A0
move.w (A0), D1
adda.w #$02, A0
move.w (A0), D2
tst.b (A5,D1.w)
bne xmiddledemos_notsolo
tst.b (A5,D2.w)
bne xmiddledemos_notsolo
moveq #0, D0
rts
xmiddledemos_notsolo:
moveq #1, D0
rts
tbl_xmiddledemo_otherplayers:
dc.w $628, $66E8, $568, $66E8, $568, $628