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[Reverse-engineering] [th01] .GRC: Slot structure 

Part of P0105, funded by Yanga.
This commit is contained in:
nmlgc 2020-07-29 20:09:12 +02:00
parent bd1c2ee7de
commit b22bc80e98
4 changed files with 76 additions and 48 deletions
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15
th01/formats/grc.hpp Normal file
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@ -0,0 +1,15 @@
/// Uncompressed monochrome 8w×h sprite format
/// ------------------------------------------
static const int GRC_SLOT_COUNT = 8;
static const int GRC_IMAGES_PER_SLOT = 8;
// In-memory slot structure
struct grc_t {
int vram_w;
int h;
int image_count;
dots8_t* dots[GRC_IMAGES_PER_SLOT];
};
extern grc_t grc_images[GRC_SLOT_COUNT];
/// ------------------------------------------

12
th01/formats/grc[bss].asm Normal file
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@ -0,0 +1,12 @@
GRC_SLOT_COUNT = 8
GRC_IMAGES_PER_SLOT = 8
grc_t struc
GRC_vram_w dw ?
GRC_h dw ?
GRC_image_count dw ?
GRC_dots dd GRC_IMAGES_PER_SLOT dup(?)
grc_t ends
public _grc_images
_grc_images grc_t GRC_SLOT_COUNT dup(<?>)

1
th01/formats/pf[bss].asm
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@ -10,3 +10,4 @@ _cache dd ?
_arc_fn db 13 dup (?)
_file_pos dw ?
_cache_bytes_read dw ?
evendata

96
th01_reiiden.asm
View File

@ -12042,15 +12042,15 @@ arg_0 = word ptr 6
call arc_file_seek pascal, 4
push ds
mov ax, di
imul ax, 26h
add ax, 50BCh
imul ax, size grc_t
add ax, offset _grc_images.GRC_vram_w
push ax
push 2
call arc_file_get
push ds
mov ax, di
imul ax, 26h
add ax, 50BEh
imul ax, size grc_t
add ax, offset _grc_images.GRC_h
push ax
push 2
call arc_file_get
@ -12062,19 +12062,19 @@ arg_0 = word ptr 6
mov al, [bp+var_36]
mov ah, 0
mov bx, di
imul bx, 26h
mov [bx+50C0h], ax
imul bx, size grc_t
mov _grc_images[bx].GRC_image_count, ax
mov bx, di
imul bx, 26h
mov ax, [bx+50BCh]
imul bx, size grc_t
mov ax, _grc_images[bx].GRC_vram_w
mov bx, di
imul bx, 26h
imul word ptr [bx+50BEh]
imul bx, size grc_t
imul _grc_images[bx].GRC_h
mov [bp+var_2], ax
push ss
lea ax, [bp+var_36]
push ax
push 48
push size palette_t
call arc_file_get
mov [bp+var_4], 0
jmp short loc_17534
@ -12082,19 +12082,19 @@ arg_0 = word ptr 6
loc_174C8:
mov bx, di
imul bx, 26h
imul bx, size grc_t
mov ax, [bp+var_4]
shl ax, 2
add bx, ax
mov ax, [bx+50C2h]
or ax, [bx+50C4h]
mov ax, word ptr _grc_images.GRC_dots[bx]+0
or ax, word ptr _grc_images.GRC_dots[bx]+2
jz short loc_174F9
mov bx, di
imul bx, 26h
imul bx, size grc_t
mov ax, [bp+var_4]
shl ax, 2
add bx, ax
pushd dword ptr [bx+50C2h] ; font
pushd _grc_images.GRC_dots[bx] ; font
call @$bdla$qnv
add sp, 4
@ -12103,24 +12103,24 @@ loc_174F9:
call @$bnwa$qui
pop cx
mov bx, di
imul bx, 26h
imul bx, size grc_t
mov si, [bp+var_4]
shl si, 2
add bx, si
mov [bx+50C4h], dx
mov [bx+50C2h], ax
mov word ptr _grc_images.GRC_dots[bx]+2, dx
mov word ptr _grc_images.GRC_dots[bx]+0, ax
mov bx, di
imul bx, 26h
imul bx, size grc_t
mov ax, [bp+var_4]
shl ax, 2
add bx, ax
call arc_file_get pascal, large dword ptr [bx+50C2h], [bp+var_2]
call arc_file_get pascal, large _grc_images.GRC_dots[bx], [bp+var_2]
inc [bp+var_4]
loc_17534:
mov bx, di
imul bx, 26h
mov ax, [bx+50C0h]
imul bx, size grc_t
mov ax, _grc_images[bx].GRC_image_count
cmp ax, [bp+var_4]
jg short loc_174C8
call arc_file_free
@ -12164,16 +12164,16 @@ arg_6 = word ptr 0Ch
mov [bp+var_2], ax
mov [bp+var_8], 0
mov bx, si
imul bx, 26h
mov ax, [bx+50BCh]
imul bx, size grc_t
mov ax, _grc_images[bx].GRC_vram_w
imul ax, -8
cmp ax, [bp+arg_0]
jg loc_1767E
cmp [bp+arg_0], 280h
jge loc_1767E
mov bx, si
imul bx, 26h
mov ax, [bx+50BEh]
imul bx, size grc_t
mov ax, _grc_images[bx].GRC_h
imul ax, -1
cmp ax, [bp+arg_2]
jg loc_1767E
@ -12200,11 +12200,11 @@ loc_175BD:
loc_175D8:
mov bx, si
imul bx, 26h
imul bx, size grc_t
mov ax, [bp+arg_6]
shl ax, 2
add bx, ax
les bx, [bx+50C2h]
les bx, _grc_images.GRC_dots[bx]
add bx, [bp+var_8]
cmp byte ptr es:[bx], 0
jz short loc_17638
@ -12229,11 +12229,11 @@ loc_17605:
loc_17618:
mov bx, si
imul bx, 26h
imul bx, size grc_t
mov ax, [bp+arg_6]
shl ax, 2
add bx, ax
les bx, [bx+50C2h]
les bx, _grc_images.GRC_dots[bx]
add bx, [bp+var_8]
mov al, es:[bx]
les bx, _VRAM_PLANE_B
@ -12247,8 +12247,8 @@ loc_17638:
loc_1763F:
mov bx, si
imul bx, 26h
mov ax, [bx+50BCh]
imul bx, size grc_t
mov ax, _grc_images[bx].GRC_vram_w
cmp ax, [bp+var_6]
jg short loc_175D8
jmp short loc_1765B
@ -12256,8 +12256,8 @@ loc_1763F:
loc_1764F:
mov bx, si
imul bx, 26h
mov ax, [bx+50BCh]
imul bx, size grc_t
mov ax, _grc_images[bx].GRC_vram_w
add [bp+var_8], ax
loc_1765B:
@ -12268,8 +12268,8 @@ loc_1765B:
loc_17669:
mov bx, si
imul bx, 26h
mov ax, [bx+50BEh]
imul bx, size grc_t
mov ax, _grc_images[bx].GRC_h
cmp ax, [bp+var_4]
jg loc_175BD
@ -12303,36 +12303,36 @@ arg_0 = word ptr 6
loc_1768E:
mov bx, di
imul bx, 26h
imul bx, size grc_t
mov ax, si
shl ax, 2
add bx, ax
mov ax, [bx+50C2h]
or ax, [bx+50C4h]
mov ax, word ptr _grc_images.GRC_dots[bx]+0
or ax, word ptr _grc_images.GRC_dots[bx]+2
jz short loc_176D5
mov bx, di
imul bx, 26h
imul bx, size grc_t
mov ax, si
shl ax, 2
add bx, ax
pushd dword ptr [bx+50C2h] ; font
pushd _grc_images.GRC_dots[bx]
call @$bdla$qnv
add sp, 4
mov bx, di
imul bx, 26h
imul bx, size grc_t
mov ax, si
shl ax, 2
add bx, ax
mov word ptr [bx+50C4h], 0
mov word ptr [bx+50C2h], 0
mov word ptr _grc_images.GRC_dots[bx]+2, 0
mov word ptr _grc_images.GRC_dots[bx]+0, 0
loc_176D5:
inc si
loc_176D6:
mov bx, di
imul bx, 26h
cmp [bx+50C0h], si
imul bx, size grc_t
cmp _grc_images[bx].GRC_image_count, si
jg short loc_1768E
pop di
pop si
@ -53750,7 +53750,7 @@ word_39A2B dw ?
byte_39A32 db ?
db ?
include th01/formats/pf[bss].asm
db 305 dup(?)
include th01/formats/grc[bss].asm
palette_39B8C palette_t <?>
db 348 dup(?)
byte_39D18 db ?