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[Reverse-engineering] [th04/th05] Player shot cycle counter 

Part of P0036, funded by zorg.
This commit is contained in:
nmlgc 2019-10-08 22:08:37 +02:00
parent f33a3ef220
commit a84fa33beb
3 changed files with 44 additions and 33 deletions
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9
th04/player/player.inc
View File

@ -3,6 +3,15 @@ PLAYER_OPTION_W = 16
PLAYER_OPTION_H = 16
PLAYER_OPTION_DISTANCE = (PLAYER_W / 2) + (PLAYER_OPTION_W / 2)
; Shots
; -----
; Shots are always fired for multiples of this number of frames, even if
; INPUT_SHOT is held for a shorter amount of time.
SHOT_CYCLE_FRAMES = 18
; Set shot_time to this value to block shots from being fired this frame.
SHOT_BLOCKED_FOR_THIS_FRAME = 0FFh
; -----
MISS_ANIM_FRAMES = 32
MISS_ANIM_FLASH_AT = 28
MISS_ANIM_EXPLODE_UNTIL = 31

47
th04_main.asm
View File

@ -8386,7 +8386,7 @@ shot_reimu_a_l2 proc near
push si
push di
mov di, 1
cmp byte_259A6, 12h
cmp _shot_time, SHOT_CYCLE_FRAMES
jnz short loc_F3D7
mov byte_256A2, 0
@ -8470,7 +8470,7 @@ shot_reimu_a_l3 proc near
push si
push di
mov di, 2
cmp byte_259A6, 12h
cmp _shot_time, SHOT_CYCLE_FRAMES
jnz short loc_F467
mov byte_256A2, 0
@ -8557,7 +8557,7 @@ shot_reimu_a_l4 proc near
push si
push di
mov di, 3
cmp byte_259A6, 12h
cmp _shot_time, SHOT_CYCLE_FRAMES
jnz short loc_F4FE
mov byte_256A2, 0
@ -8642,7 +8642,7 @@ shot_reimu_a_l5 proc near
push si
push di
mov di, 3
cmp byte_259A6, 12h
cmp _shot_time, SHOT_CYCLE_FRAMES
jnz short loc_F59A
mov byte_256A2, 0
@ -8727,7 +8727,7 @@ shot_reimu_a_l6 proc near
push si
push di
mov di, 3
cmp byte_259A6, 12h
cmp _shot_time, SHOT_CYCLE_FRAMES
jnz short loc_F636
mov byte_256A2, 0
@ -8817,7 +8817,7 @@ var_2 = word ptr -2
push si
push di
mov di, 5
cmp byte_259A6, 12h
cmp _shot_time, SHOT_CYCLE_FRAMES
jnz short loc_F6D2
mov byte_256A2, 0
@ -9037,7 +9037,7 @@ var_2 = word ptr -2
push di
mov di, 5
add di, 2
cmp byte_259A6, 12h
cmp _shot_time, SHOT_CYCLE_FRAMES
jnz short loc_F85A
mov byte_256A2, 0
@ -9188,7 +9188,7 @@ var_1 = byte ptr -1
push si
push di
mov di, 1
cmp byte_259A6, 12h
cmp _shot_time, SHOT_CYCLE_FRAMES
jnz short loc_F96C
mov byte_256A2, 0
@ -9267,7 +9267,7 @@ shot_reimu_b_l3 proc near
push si
push di
mov di, 2
cmp byte_259A6, 12h
cmp _shot_time, SHOT_CYCLE_FRAMES
jnz short loc_F9FB
mov byte_256A2, 0
@ -9351,7 +9351,7 @@ shot_reimu_b_l4 proc near
push si
push di
mov di, 3
cmp byte_259A6, 12h
cmp _shot_time, SHOT_CYCLE_FRAMES
jnz short loc_FA92
mov byte_256A2, 0
@ -9435,7 +9435,7 @@ shot_reimu_b_l5 proc near
push si
push di
mov di, 3
cmp byte_259A6, 12h
cmp _shot_time, SHOT_CYCLE_FRAMES
jnz short loc_FB37
mov byte_256A2, 0
@ -9548,7 +9548,7 @@ shot_reimu_b_l6 proc near
push si
push di
mov di, 3
cmp byte_259A6, 12h
cmp _shot_time, SHOT_CYCLE_FRAMES
jnz short loc_FC05
mov byte_256A2, 0
@ -9661,7 +9661,7 @@ shot_reimu_b_l7 proc near
push si
push di
mov di, 3
cmp byte_259A6, 12h
cmp _shot_time, SHOT_CYCLE_FRAMES
jnz short loc_FCD3
mov byte_256A2, 0
@ -9774,7 +9774,7 @@ shot_reimu_b_l8 proc near
push si
push di
mov di, 5
cmp byte_259A6, 12h
cmp _shot_time, SHOT_CYCLE_FRAMES
jnz short loc_FDA1
mov byte_256A2, 0
@ -9887,7 +9887,7 @@ shot_reimu_b_l9 proc near
push si
push di
mov di, 7
cmp byte_259A6, 12h
cmp _shot_time, SHOT_CYCLE_FRAMES
jnz short loc_FE6F
mov byte_256A2, 0
@ -10553,7 +10553,7 @@ sub_1042A proc near
mov bp, sp
mov word_25608, 0
mov byte_2560A, 0
mov byte_259A6, 0
mov _shot_time, 0
mov _player_is_hit, 0
pop bp
retn
@ -11253,19 +11253,19 @@ loc_10B75:
loc_10B82:
test _input.lo, low INPUT_SHOT
jz short loc_10B97
cmp byte_259A6, 1
cmp _shot_time, 1
ja short loc_10B97
mov byte_259A6, 12h
mov _shot_time, SHOT_CYCLE_FRAMES
jmp short loc_10BB0
; ---------------------------------------------------------------------------
loc_10B97:
cmp byte_259A6, 0
cmp _shot_time, 0
jz short loc_10BC7
dec byte_259A6
cmp byte_259A6, 6
dec _shot_time
cmp _shot_time, (SHOT_CYCLE_FRAMES / 3) * 1
jz short loc_10BB0
cmp byte_259A6, 0Ch
cmp _shot_time, (SHOT_CYCLE_FRAMES / 3) * 2
jnz short loc_10BC7
loc_10BB0:
@ -41144,7 +41144,8 @@ _player_invincibility_time db ?
byte_259A3 db ?
power db ?
shot_level db ?
byte_259A6 db ?
public _SHOT_TIME
_shot_time db ?
include th01/player_is_hit[bss].asm
db ? ;
byte_259A9 db ?

21
th05_main.asm
View File

@ -1104,7 +1104,7 @@ sub_B55A proc near
mov _player_is_hit, 0
mov _player_invincibility_time, STAGE_START_INVINCIBILITY_FRAMES
mov _point_items_collected, 0
mov byte_2CEC0, 0
mov _shot_time, 0
mov fp_2C92E, offset sub_EE58
mov _scroll_active, 1
nopcall sub_E4FC
@ -3222,7 +3222,7 @@ sub_C99E proc near
loc_C9D0:
call sub_C84F
mov byte_2CEC0, 0FFh
mov _shot_time, SHOT_BLOCKED_FOR_THIS_FRAME
pop bp
retn
sub_C99E endp
@ -12941,20 +12941,20 @@ loc_121E7:
loc_121F4:
test _input.lo, low INPUT_SHOT
jz short loc_12207
cmp byte_2CEC0, 0
cmp _shot_time, 0
jnz short loc_12207
mov byte_2CEC0, 12h
mov _shot_time, SHOT_CYCLE_FRAMES
loc_12207:
cmp byte_2CEC0, 12h
cmp _shot_time, SHOT_CYCLE_FRAMES
jbe short loc_12213
mov byte_2CEC0, 0
mov _shot_time, 0
loc_12213:
cmp byte_2CEC0, 0
cmp _shot_time, 0
jz short loc_1222E
call playchar_shot_func
dec byte_2CEC0
dec _shot_time
jmp short loc_1222E
; ---------------------------------------------------------------------------
@ -13651,7 +13651,7 @@ var_1 = byte ptr -1
enter 2, 0
mov [bp+var_1], 0
mov al, byte_2CEC0
mov al, _shot_time
mov ah, 0
sub ax, 3
mov bx, ax
@ -44766,7 +44766,8 @@ _player_invincibility_time db ?
byte_2CEBD db ?
power db ?
shot_level db ?
byte_2CEC0 db ?
public _SHOT_TIME
_shot_time db ?
include th01/player_is_hit[bss].asm
public _MISS_TIME
_miss_time db ?