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[Reverse-engineering] [th04/th05] Target position for homing shots 

Funded by -Tom-.
This commit is contained in:
nmlgc 2018-12-30 15:31:26 +01:00
parent 612beb815b
commit 4770d145d6
3 changed files with 94 additions and 91 deletions
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4
th04/homing_target[bss].asm Normal file
View File

@ -0,0 +1,4 @@
; In 16th-pixel playfield coordinates.
HOMING_TARGET_NONE = (-999 shl 4)
public _homing_target
_homing_target Point <?>

105
th04_main.asm
View File

@ -9015,10 +9015,10 @@ arg_2 = word ptr 6
mov bp, sp
push si
mov si, [bp+arg_2]
mov ax, word_25984
mov ax, _homing_target.y
sub ax, player_pos.cur.y
push ax
mov ax, word_25982
mov ax, _homing_target.x
sub ax, [si+2]
push ax
call iatan2
@ -9136,7 +9136,7 @@ loc_F421:
add word ptr [si+2], 180h
loc_F426:
cmp word_25984, 0C190h
cmp _homing_target.y, HOMING_TARGET_NONE
jz short loc_F43A
push si
push 7
@ -9224,7 +9224,7 @@ loc_F4B7:
add word ptr [si+2], 180h
loc_F4BC:
cmp word_25984, 0C190h
cmp _homing_target.y, HOMING_TARGET_NONE
jz short loc_F4D0
push si
push 7
@ -9309,7 +9309,7 @@ loc_F553:
add word ptr [si+2], 180h
loc_F558:
cmp word_25984, 0C190h
cmp _homing_target.y, HOMING_TARGET_NONE
jz short loc_F56C
push si
push 7
@ -9394,7 +9394,7 @@ loc_F5EF:
add word ptr [si+2], 180h
loc_F5F4:
cmp word_25984, 0C190h
cmp _homing_target.y, HOMING_TARGET_NONE
jz short loc_F608
push si
push 7
@ -9479,7 +9479,7 @@ loc_F68B:
add word ptr [si+2], 180h
loc_F690:
cmp word_25984, 0C190h
cmp _homing_target.y, HOMING_TARGET_NONE
jz short loc_F6A4
push si
push 7
@ -9593,7 +9593,7 @@ loc_F75B:
add word ptr [si+2], 180h
loc_F760:
cmp word_25984, 0C190h
cmp _homing_target.y, HOMING_TARGET_NONE
jz short loc_F774
push si
push 7
@ -9695,7 +9695,7 @@ loc_F80E:
add word ptr [si+2], 180h
loc_F813:
cmp word_25984, 0C190h
cmp _homing_target.y, HOMING_TARGET_NONE
jz short loc_F827
push si
push 7
@ -9816,7 +9816,7 @@ loc_F8E9:
mov byte ptr [bp-2], 0CCh
loc_F8F2:
cmp word_25984, 0C190h
cmp _homing_target.y, HOMING_TARGET_NONE
jz short loc_F908
push si
push 7
@ -9850,7 +9850,7 @@ loc_F929:
add word ptr [si+2], 180h
loc_F92E:
cmp word_25984, 0C190h
cmp _homing_target.y, HOMING_TARGET_NONE
jz short loc_F93C
push si
push 0
@ -18057,9 +18057,9 @@ loc_1411F:
push offset _midboss_pos
call _motion_update_2
mov ax, _midboss_pos.cur.x
mov word_25982, ax
mov _homing_target.x, ax
mov ax, _midboss_pos.cur.y
mov word_25984, ax
mov _homing_target.y, ax
inc word_26706
cmp byte_26704, 8Bh ; '‹'
jnb short loc_14158
@ -18109,9 +18109,9 @@ loc_141BF:
push offset _midboss_pos
call _motion_update_2
mov ax, _midboss_pos.cur.x
mov word_25982, ax
mov _homing_target.x, ax
mov ax, _midboss_pos.cur.y
mov word_25984, ax
mov _homing_target.y, ax
inc word_26706
cmp byte_26704, 92h
jnb short loc_141FA
@ -18155,9 +18155,9 @@ loc_1422D:
cmp _scroll_speed, 2
ja short loc_142AC
mov ax, _midboss_pos.cur.x
mov word_25982, ax
mov _homing_target.x, ax
mov ax, _midboss_pos.cur.y
mov word_25984, ax
mov _homing_target.y, ax
inc word_26706
mov word_257E2, 180h
mov word_257E4, 100h
@ -18398,9 +18398,9 @@ var_1 = byte ptr -1
enter 4, 0
push si
mov ax, _midboss_pos.cur.x
mov word_25982, ax
mov _homing_target.x, ax
mov ax, _midboss_pos.cur.y
mov word_25984, ax
mov _homing_target.y, ax
cmp byte_26705, 0
jnz short loc_144F1
push offset _midboss_pos
@ -19371,9 +19371,9 @@ var_2 = word ptr -2
enter 2, 0
push si
mov ax, _midboss_pos.cur.x
mov word_25982, ax
mov _homing_target.x, ax
mov ax, _midboss_pos.cur.y
mov word_25984, ax
mov _homing_target.y, ax
cmp byte_26705, 0
jnz short loc_14D5D
push offset _midboss_pos
@ -19994,9 +19994,9 @@ var_2 = word ptr -2
enter 2, 0
push si
mov ax, _midboss_pos.cur.x
mov word_25982, ax
mov _homing_target.x, ax
mov ax, _midboss_pos.cur.y
mov word_25984, ax
mov _homing_target.y, ax
cmp byte_26705, 0
jnz short loc_15314
push offset _midboss_pos
@ -22648,9 +22648,9 @@ loc_169B3:
loc_169B8:
mov ax, _boss_pos.cur.x
mov word_25982, ax
mov _homing_target.x, ax
mov ax, _boss_pos.cur.y
mov word_25984, ax
mov _homing_target.y, ax
call sub_15DE8
push _boss_hp
push 9000
@ -23139,12 +23139,12 @@ loc_16D53:
loc_16D7E:
mov ax, [si+4]
cmp ax, word_25984
cmp ax, _homing_target.y
jge short loc_16D93
mov ax, [si+2]
mov word_25982, ax
mov _homing_target.x, ax
mov ax, [si+4]
mov word_25984, ax
mov _homing_target.y, ax
loc_16D93:
mov ax, [si+2]
@ -24877,9 +24877,9 @@ loc_17C9F:
loc_17CA4:
mov ax, _boss_pos.cur.x
mov word_25982, ax
mov _homing_target.x, ax
mov ax, _boss_pos.cur.y
mov word_25984, ax
mov _homing_target.y, ax
call sub_16C6A
push _boss_hp
push 6000
@ -25109,8 +25109,8 @@ var_1 = byte ptr -1
enter 2, 0
push si
push di
mov word_25982, 0C190h
mov word_25984, 0C190h
mov _homing_target.x, HOMING_TARGET_NONE
mov _homing_target.y, HOMING_TARGET_NONE
mov word_257E2, 100h
mov word_257E4, 0C0h
mov si, 8A92h
@ -25162,14 +25162,14 @@ loc_17ECA:
cmp ax, 1800h
jnb loc_17F9B
mov ax, [si+4]
cmp ax, word_25984
cmp ax, _homing_target.y
jle short loc_17F0F
cmp ax, player_pos.cur.y
jg short loc_17F0F
mov ax, [si+2]
mov word_25982, ax
mov _homing_target.x, ax
mov ax, [si+4]
mov word_25984, ax
mov _homing_target.y, ax
loc_17F0F:
mov eax, [si+2]
@ -26481,9 +26481,9 @@ loc_1899C:
loc_189A1:
mov ax, _boss_pos.cur.x
mov word_25982, ax
mov _homing_target.x, ax
mov ax, _boss_pos.cur.y
mov word_25984, ax
mov _homing_target.y, ax
push _boss_hp
push 9400
call sub_19F16
@ -27871,9 +27871,9 @@ loc_195A4:
loc_195A9:
mov ax, _boss_pos.cur.x
mov word_25982, ax
mov _homing_target.x, ax
mov ax, _boss_pos.cur.y
mov word_25984, ax
mov _homing_target.y, ax
push _boss_hp
push 4800
call sub_19F16
@ -28828,9 +28828,9 @@ loc_19E88:
loc_19E8D:
mov ax, _boss_pos.cur.x
mov word_25982, ax
mov _homing_target.x, ax
mov ax, _boss_pos.cur.y
mov word_25984, ax
mov _homing_target.y, ax
push _boss_hp
push 3050
call sub_19F16
@ -32154,9 +32154,9 @@ loc_1B8E5:
loc_1B8EA:
mov ax, _boss_pos.cur.x
mov word_25982, ax
mov _homing_target.x, ax
mov ax, _boss_pos.cur.y
mov word_25984, ax
mov _homing_target.y, ax
call sub_15DE8
call sub_1A110
push _boss_hp
@ -33686,9 +33686,9 @@ loc_1C675:
loc_1C67A:
mov ax, _boss_pos.cur.x
mov word_25982, ax
mov _homing_target.x, ax
mov ax, _boss_pos.cur.y
mov word_25984, ax
mov _homing_target.y, ax
push _boss_hp
push 6000
call sub_19F16
@ -37751,8 +37751,8 @@ loc_1E8E5:
loc_1E905:
inc word_2671A
mov word_25982, 0C190h
mov word_25984, 0C190h
mov _homing_target.x, HOMING_TARGET_NONE
mov _homing_target.y, HOMING_TARGET_NONE
loc_1E915:
pop bp
@ -39557,9 +39557,9 @@ loc_1F8A0:
loc_1F8A5:
mov ax, _boss_pos.cur.x
mov word_25982, ax
mov _homing_target.x, ax
mov ax, _boss_pos.cur.y
mov word_25984, ax
mov _homing_target.y, ax
call sub_1EBF3
push _boss_hp
push 9100
@ -41222,9 +41222,9 @@ loc_206B6:
cmp byte ptr word_237F8, 0
jnz short loc_206C9
mov ax, _boss_pos.cur.x
mov word_25982, ax
mov _homing_target.x, ax
mov ax, _boss_pos.cur.y
mov word_25984, ax
mov _homing_target.y, ax
loc_206C9:
call sub_15DE8
@ -45241,8 +45241,7 @@ word_257E4 dw ?
word_2597E dw ?
byte_25980 db ?
db ?
word_25982 dw ?
word_25984 dw ?
include th04/homing_target[bss].asm
public _stage_vm
_stage_vm dd ?
word_2598A dw ?

76
th05_main.asm
View File

@ -14273,12 +14273,12 @@ loc_12456:
mov byte ptr [si+0Fh], 0
loc_12460:
cmp word ptr dword_2C922, 0C190h
cmp _homing_target.x, HOMING_TARGET_NONE
jz loc_124FA
mov ax, word ptr dword_2C922+2
mov ax, _homing_target.y
sub ax, [si+4]
push ax
mov ax, word ptr dword_2C922
mov ax, _homing_target.x
sub ax, [si+2]
push ax
call iatan2
@ -14319,10 +14319,10 @@ loc_124B0:
jnb short loc_124DC
loc_124C4:
mov ax, word ptr dword_2C922+2
mov ax, _homing_target.y
sub ax, [si+4]
push ax
mov ax, word ptr dword_2C922
mov ax, _homing_target.x
sub ax, [si+2]
push ax
call iatan2
@ -21380,8 +21380,8 @@ var_1 = byte ptr -1
enter 2, 0
push si
push di
mov word ptr dword_2C922, 0C190h
mov word ptr dword_2C922+2, 0C190h
mov _homing_target.x, HOMING_TARGET_NONE
mov _homing_target.y, HOMING_TARGET_NONE
mov word_2CED6, 100h
mov word_2CED8, 0C0h
mov [bp+var_2], 0
@ -21435,12 +21435,12 @@ loc_160F2:
jnb loc_161C6
inc [bp+var_2]
mov ax, [si+4]
cmp ax, word ptr dword_2C922+2
cmp ax, _homing_target.y
jle short loc_16134
mov ax, [si+2]
mov word ptr dword_2C922, ax
mov _homing_target.x, ax
mov ax, [si+4]
mov word ptr dword_2C922+2, ax
mov _homing_target.y, ax
loc_16134:
mov eax, [si+2]
@ -21559,7 +21559,7 @@ loc_1624D:
loc_16251:
cmp di, 20h ; ' '
jl loc_160A7
cmp word ptr dword_2C922, 0C190h
cmp _homing_target.x, HOMING_TARGET_NONE
jz short loc_162B9
cmp [bp+var_2], 8
jb short loc_1626C
@ -25283,9 +25283,9 @@ loc_181C4:
push 1000
call sub_17354
mov ax, _midboss_pos.cur.x
mov word ptr dword_2C922, ax
mov _homing_target.x, ax
mov ax, _midboss_pos.cur.y
mov word ptr dword_2C922+2, ax
mov _homing_target.y, ax
pop bp
retf
sub_180BF endp
@ -25851,9 +25851,9 @@ sub_186B6 proc far
push bp
mov bp, sp
mov ax, _boss_pos.cur.x
mov word ptr dword_2C922, ax
mov _homing_target.x, ax
mov ax, _boss_pos.cur.y
mov word ptr dword_2C922+2, ax
mov _homing_target.y, ax
inc boss_phase_frame
mov byte ptr word_25FFA, 0
mov eax, _boss_pos.cur
@ -26351,9 +26351,9 @@ loc_18BA0:
push 1400
call sub_17354
mov ax, _midboss_pos.cur.x
mov word ptr dword_2C922, ax
mov _homing_target.x, ax
mov ax, _midboss_pos.cur.y
mov word ptr dword_2C922+2, ax
mov _homing_target.y, ax
pop bp
retf
sub_18A2F endp
@ -26943,9 +26943,9 @@ sub_1903A proc far
push bp
mov bp, sp
mov ax, _boss_pos.cur.x
mov word ptr dword_2C922, ax
mov _homing_target.x, ax
mov ax, _boss_pos.cur.y
mov word ptr dword_2C922+2, ax
mov _homing_target.y, ax
inc boss_phase_frame
mov byte ptr word_25FFA, 0
mov eax, _boss_pos.cur
@ -27591,9 +27591,9 @@ loc_19613:
push 1400
call sub_17354
mov ax, _midboss_pos.cur.x
mov word ptr dword_2C922, ax
mov _homing_target.x, ax
mov ax, _midboss_pos.cur.y
mov word ptr dword_2C922+2, ax
mov _homing_target.y, ax
pop bp
retf
sub_194E8 endp
@ -28774,9 +28774,9 @@ sub_1A044 proc far
mov bp, sp
push si
mov ax, _boss_pos.cur.x
mov word ptr dword_2C922, ax
mov _homing_target.x, ax
mov ax, _boss_pos.cur.y
mov word ptr dword_2C922+2, ax
mov _homing_target.y, ax
inc boss_phase_frame
mov byte ptr word_25FFA, 0
mov ax, _boss_pos.cur.x
@ -30126,7 +30126,7 @@ loc_1ABEE:
mov eax, dword_2634E
loc_1ABF2:
mov dword_2C922, eax
mov _homing_target, eax
inc boss_phase_frame
mov al, boss_phase
mov ah, 0
@ -30945,9 +30945,9 @@ loc_1B3A1:
push 1100
call sub_17354
mov ax, _midboss_pos.cur.x
mov word ptr dword_2C922, ax
mov _homing_target.x, ax
mov ax, _midboss_pos.cur.y
mov word ptr dword_2C922+2, ax
mov _homing_target.y, ax
pop bp
retf
sub_1B26F endp
@ -31707,7 +31707,7 @@ sub_1B9F2 proc far
push bp
mov bp, sp
mov eax, _boss_pos.cur
mov dword_2C922, eax
mov _homing_target, eax
mov dword_25FFC, eax
mov dword_2A722, eax
mov dword ptr word_2BC71+1, eax
@ -32913,7 +32913,7 @@ sub_1C518 proc far
mov bp, sp
push si
mov eax, _boss_pos.cur
mov dword_2C922, eax
mov _homing_target, eax
mov dword_25FFC, eax
mov dword_2A722, eax
mov _laser_template.coords.origin, eax
@ -34296,7 +34296,7 @@ sub_1D26B proc far
mov bp, sp
push si
mov eax, _boss_pos.cur
mov dword_2C922, eax
mov _homing_target, eax
mov dword_25FFC, eax
mov dword_2A722, eax
mov dword ptr word_2BC71+1, eax
@ -35899,7 +35899,7 @@ sub_1E197 proc far
push si
push di
mov eax, _boss_pos.cur
mov dword_2C922, eax
mov _homing_target, eax
mov dword_25FFC, eax
mov dword_2A722, eax
mov _laser_template.coords.origin, eax
@ -36647,9 +36647,9 @@ loc_1E864:
push 3000
call sub_17354
mov ax, _midboss_pos.cur.x
mov word ptr dword_2C922, ax
mov _homing_target.x, ax
mov ax, _midboss_pos.cur.y
mov word ptr dword_2C922+2, ax
mov _homing_target.y, ax
pop bp
retf
sub_1E70E endp
@ -37861,7 +37861,7 @@ sub_1F289 proc far
loc_1F298:
mov eax, _boss_pos.cur
mov dword_2C922, eax
mov _homing_target, eax
mov dword_25FFC, eax
mov dword_2A722, eax
mov _laser_template.coords.origin, eax
@ -38615,9 +38615,9 @@ loc_1F9A1:
push 1550
call sub_17354
mov ax, _midboss_pos.cur.x
mov word ptr dword_2C922, ax
mov _homing_target.x, ax
mov ax, _midboss_pos.cur.y
mov word ptr dword_2C922+2, ax
mov _homing_target.y, ax
pop bp
retf
sub_1F87B endp
@ -39146,8 +39146,8 @@ loc_1FD35:
call frame_delay
loc_1FD51:
mov word ptr dword_2C922, 0C190h
mov word ptr dword_2C922+2, 0C190h
mov _homing_target.x, HOMING_TARGET_NONE
mov _homing_target.y, HOMING_TARGET_NONE
loc_1FD5D:
pop si
@ -50083,7 +50083,7 @@ word_2C0C8 dw ?
dd ? ;
dd ? ;
dd ? ;
dword_2C922 dd ?
include th04/homing_target[bss].asm
public _stage_vm
_stage_vm dd ?
word_2C92A dw ?