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[Decompilation] [th02] Endings: Clearing the text line 

Part of P0278, funded by Yanga.
This commit is contained in:
nmlgc 2024-03-29 09:08:58 +01:00
parent ddaf8c9495
commit f623a70929
2 changed files with 24 additions and 52 deletions
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23
th02/end/end.cpp
View File

@ -21,6 +21,14 @@
// -----------
static const screen_y_t CUTSCENE_PIC_TOP = ((RES_Y / 2) - (CUTSCENE_PIC_H / 2));
static const pixel_t END_LINE_W = (END_LINE_LENGTH * GLYPH_HALF_W);
static const screen_x_t END_LINE_LEFT = ((RES_X / 2) - (END_LINE_W / 2));
static const screen_y_t END_LINE_TOP = (
CUTSCENE_PIC_TOP + CUTSCENE_PIC_H + (GLYPH_H * 2)
);
static const screen_x_t END_LINE_RIGHT = (END_LINE_LEFT + END_LINE_W);
static const screen_y_t END_LINE_BOTTOM = (END_LINE_TOP + GLYPH_H);
// -----------
// State
@ -266,3 +274,18 @@ void pascal near end_pic_put_rows(
CUTSCENE_PIC_LEFT, CUTSCENE_PIC_TOP, rows, quarter, quarter_offset_y
);
}
void near end_line_clear(void)
{
screen_y_t y;
screen_y_t x;
grcg_setcolor(GC_RMW, 0);
for(y = END_LINE_TOP; y < END_LINE_BOTTOM; y++) {
for(x = END_LINE_LEFT; x < END_LINE_RIGHT; x += GLYPH_FULL_W) {
vram_offset_t vo = vram_offset_shift(x, y);
grcg_put(vo, 0xFFFF, GLYPH_FULL_W);
}
}
grcg_off();
}

53
th02_maine.asm
View File

@ -127,6 +127,7 @@ END_TEXT segment byte public 'CODE' use16
@STAFFROLL_PIC_PUT$QIII procdesc pascal near \
left_and_top:dword, quarter:word
@END_PIC_PUT_ROWS$QIII procdesc pascal near
@end_line_clear$qv procdesc near
END_TEXT ends
; Segment type: Pure code
@ -135,58 +136,6 @@ maine_01_TEXT segment byte public 'CODE' use16
;org 3
assume es:nothing, ss:nothing, ds:_DATA, fs:nothing, gs:nothing
; =============== S U B R O U T I N E =======================================
; Attributes: bp-based frame
public @end_line_clear$qv
@end_line_clear$qv proc near
var_2 = word ptr -2
enter 2, 0
push si
push di
call grcg_setcolor pascal, (GC_RMW shl 16) + 0
mov si, 14Ch
jmp short loc_9AC5
; ---------------------------------------------------------------------------
loc_9A94:
mov di, 90h
jmp short loc_9ABE
; ---------------------------------------------------------------------------
loc_9A99:
mov ax, di
sar ax, 3
mov dx, si
shl dx, 6
add ax, dx
mov dx, si
shl dx, 4
add ax, dx
mov [bp+var_2], ax
les bx, _VRAM_PLANE_B
add bx, [bp+var_2]
mov word ptr es:[bx], 0FFFFh
add di, 10h
loc_9ABE:
cmp di, 1F0h
jl short loc_9A99
inc si
loc_9AC5:
cmp si, 15Ch
jl short loc_9A94
call grcg_off
pop di
pop si
leave
retn
@end_line_clear$qv endp
; =============== S U B R O U T I N E =======================================
; Attributes: bp-based frame