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Refactor reset_game_state
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@devinsmith
devinsmith committed Dec 29, 2021
1 parent 4ecba66 commit ed9328c
Showing 1 changed file with 157 additions and 184 deletions.
341 changes: 157 additions & 184 deletions src/lib/engine.c
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Original file line number Diff line number Diff line change
Expand Up @@ -350,6 +350,8 @@ static void sub_11A0(int set_11C4);
static void handle_byte_callback(unsigned char byte);
static void set_sb_handler_append_string();
static void append_string(unsigned char byte);
static void sub_1A72();
static void sub_1ABD(uint8_t val);
static void sub_280E();
static void sub_1BF8(uint8_t color, uint8_t y_adjust);
static void set_ui_header(unsigned char *base_ptr, uint16_t offset);
Expand Down Expand Up @@ -3248,45 +3250,188 @@ static void sub_4D5C()
}
}

// 0x1A68
void reset_game_state()
{
memset(game_state.unknown + 0x18, 0, 7);

sub_1A72();
}

// 0x1A72
static void sub_1A72()
{
uint8_t al, ah;
uint8_t val;

if (ui_rect_redraw(11) == 1) {
return;
}

al = draw_point.x;
ah = draw_point.y;
cpu.ax = (ah << 8) | al;
push_word(cpu.ax);
al = game_state.unknown[6];
cpu.ax = (ah << 8) | al;
cpu.ax = (ah << 8) | game_state.unknown[6];
push_word(cpu.ax);

// 0x1A85
set_sb_handler_ui_draw_chr();
cpu.bx = 6;
do {
int counter = 6;
while (counter >= 0) {
// 0x1A8B
al = game_state.unknown[cpu.bx + 0x18];
al = game_state.unknown[0x18 + counter];
if (al < 0x80) {
// 0x1A93
printf("%s: 0x1A93 unimplemented\n", __func__);
exit(1);
set_game_state(__func__, 6, counter & 0xFF);
ah = 0;
// si = ax

if (al == 0) {
val = 0x10;
} else {
val = 0x01;
}
al = val;
sub_1ABD(al);
set_game_state(__func__, 0x18 + counter, 0xFF);
}
// 0x1AA9
cpu.bx--;
} while (cpu.bx != 0xFFFF);
// 0x1AAC
counter--;
}
cpu.ax = pop_word();
set_game_state(__func__, 6, cpu.ax & 0xFF);
cpu.ax = pop_word();
draw_point.y = (cpu.ax & 0xFF00) >> 8;
draw_point.x = (cpu.ax & 0xFF);
draw_point.x = cpu.ax & 0xFF;
set_sb_handler_append_string();
}

// 0x1ABD
// input will be 0x01 or 0x10
static void sub_1ABD(uint8_t val)
{
uint8_t al, ah, bl;
uint16_t fill_color; // 3713
int si;

cpu.ax = (cpu.ax & 0xFF00) | val;
cpu.bx = cpu.ax;
bl = cpu.bx & 0xFF;
bl = bl & 0xF; // make sure it's not higher than 0xF.
byte_1BE5 = bl; // color.

ui_set_background(cpu.ax);

bl = game_state.unknown[0x6];
al = bl;
al = al << 4;
al += 0x20;
draw_point.y = al;
draw_point.x = 0x1B;
cpu.bx = bl; // xor bh, bh

cpu.ax = 0xC960;
ah = (cpu.ax & 0xFF00) >> 8;

ah += game_state.unknown[cpu.bx + 0xA]; // Character selector ?
cpu.ax = (ah << 8) | (cpu.ax & 0xFF);
player_base_offset = cpu.ax;

al = game_state.unknown[6];
if (al >= game_state.unknown[31]) {
// 1AF6
al = byte_1BE5;
fill_color = al; // color ?
al = draw_point.y;
cpu.ax = al;
g_linenum = cpu.ax; // line number
word_36C0 = 0x36; // starting point
word_36C2 = 0x4E; // ending point

while (1) {
ui_draw_solid_color(fill_color, word_36C0, word_36C2, g_linenum);
g_linenum++;

if ((g_linenum & 0x0F) == 0) {
break;
}
}
reset_ui_background();
return;
}
// 1B22
al = 0xC;
cpu.ax = (cpu.ax & 0xFF00) | al;
unsigned char *c960 = get_player_data_base();
unsigned char *di = c960 + (player_base_offset - 0xC960);
di--;

// 1B29
do {
di++;
cpu.ax--;
} while ((*di & 0x80) == 0x80);

// 1B30
al = cpu.ax & 0xFF;
uint8_t carry = al & 0x1;
al = al >> 1;
al = al + 0x1B + carry; // adc al, 0x1B
cpu.ax = (cpu.ax & 0xFF00) | al;
sub_1BE6();
write_character_name();
al = 0x27;
cpu.ax = (cpu.ax & 0xFF00) | al;
sub_1BE6();
di = c960 + (player_base_offset - 0xC960);
al = di[0x4C];

si = 3;

// 1B4A
int found = 0;
while (si >= 0) {
uint8_t si_val = get_1BC1_table(si);
if ((si_val & al) != 0) {
found = 1;
break; // 1B95
}
si--;
}
if (found == 0) {
// 1B53 (not found)
uint8_t dl = 2; // health
cpu.bx = 0x14;
al = 8;
cpu.ax = (cpu.ax & 0xFF00) | al;
sub_1BF8(dl, al);
// 0x1B5D
dl = 3; // stun
cpu.bx = 0x18;
al = 0x0B;
cpu.ax = (cpu.ax & 0xFF00) | al;
sub_1BF8(dl, al);
dl = 4; // magic
cpu.bx = 0x1C;
al = 0x0E;
sub_1BF8(dl, al);
al = byte_1BE5;
fill_color = al;
g_linenum--;
word_36C0 = 0x36;
word_36C2 = 0x4E;
// 0x1B87
ui_draw_solid_color(fill_color, word_36C0, word_36C2, g_linenum);
g_linenum -= 3;
ui_draw_solid_color(fill_color, word_36C0, word_36C2, g_linenum);
reset_ui_background();
return;
}
// 1B95
printf("%s 0x1B95 %d %d unimplemented\n", __func__, si, found);
exit(1);
}

// 0x1F10
static void sub_1F10()
{
Expand Down Expand Up @@ -5286,178 +5431,6 @@ void run_engine()
free(data_D760);
}

// 0x1ABD
// input will be 0x01 or 0x10
static void sub_1ABD(uint8_t val)
{
uint8_t al, ah, bl;
uint16_t fill_color; // 3713
int si;

cpu.ax = (cpu.ax & 0xFF00) | val;
cpu.bx = cpu.ax;
bl = cpu.bx & 0xFF;
bl = bl & 0xF; // make sure it's not higher than 0xF.
byte_1BE5 = bl; // color.

ui_set_background(cpu.ax);

bl = game_state.unknown[0x6];
al = bl;
al = al << 4;
al += 0x20;
draw_point.y = al;
draw_point.x = 0x1B;
cpu.bx = bl; // xor bh, bh

cpu.ax = 0xC960;
ah = (cpu.ax & 0xFF00) >> 8;

ah += game_state.unknown[cpu.bx + 0xA]; // Character selector ?
cpu.ax = (ah << 8) | (cpu.ax & 0xFF);
player_base_offset = cpu.ax;

al = game_state.unknown[6];
if (al >= game_state.unknown[31]) {
// 1AF6
al = byte_1BE5;
fill_color = al; // color ?
al = draw_point.y;
cpu.ax = al;
g_linenum = cpu.ax; // line number
word_36C0 = 0x36; // starting point
word_36C2 = 0x4E; // ending point

while (1) {
ui_draw_solid_color(fill_color, word_36C0, word_36C2, g_linenum);
g_linenum++;

if ((g_linenum & 0x0F) == 0) {
break;
}
}
reset_ui_background();
return;
}
// 1B22
al = 0xC;
cpu.ax = (cpu.ax & 0xFF00) | al;
unsigned char *c960 = get_player_data_base();
unsigned char *di = c960 + (player_base_offset - 0xC960);
di--;

// 1B29
do {
di++;
cpu.ax--;
} while ((*di & 0x80) == 0x80);

// 1B30
al = cpu.ax & 0xFF;
uint8_t carry = al & 0x1;
al = al >> 1;
al = al + 0x1B + carry; // adc al, 0x1B
cpu.ax = (cpu.ax & 0xFF00) | al;
sub_1BE6();
write_character_name();
al = 0x27;
cpu.ax = (cpu.ax & 0xFF00) | al;
sub_1BE6();
di = c960 + (player_base_offset - 0xC960);
al = di[0x4C];

si = 3;

// 1B4A
int found = 0;
while (si >= 0) {
uint8_t si_val = get_1BC1_table(si);
if ((si_val & al) != 0) {
found = 1;
break; // 1B95
}
si--;
}
if (found == 0) {
// 1B53 (not found)
uint8_t dl = 2; // health
cpu.bx = 0x14;
al = 8;
cpu.ax = (cpu.ax & 0xFF00) | al;
sub_1BF8(dl, al);
// 0x1B5D
dl = 3; // stun
cpu.bx = 0x18;
al = 0x0B;
cpu.ax = (cpu.ax & 0xFF00) | al;
sub_1BF8(dl, al);
dl = 4; // magic
cpu.bx = 0x1C;
al = 0x0E;
sub_1BF8(dl, al);
al = byte_1BE5;
fill_color = al;
g_linenum--;
word_36C0 = 0x36;
word_36C2 = 0x4E;
// 0x1B87
ui_draw_solid_color(fill_color, word_36C0, word_36C2, g_linenum);
g_linenum -= 3;
ui_draw_solid_color(fill_color, word_36C0, word_36C2, g_linenum);
reset_ui_background();
return;
}
// 1B95
printf("%s 0x1B95 %d %d unimplemented\n", __func__, si, found);
exit(1);
}

// 0x1A68
void reset_game_state()
{
uint8_t al, ah;
uint8_t val;

memset(game_state.unknown + 0x18, 0, 7);
if (ui_rect_redraw(11) == 1) {
return;
}

al = draw_point.x;
ah = draw_point.y;
cpu.ax = (ah << 8) | al;
push_word(cpu.ax);
cpu.ax = (ah << 8) | game_state.unknown[6];
push_word(cpu.ax);

set_sb_handler_ui_draw_chr();
int counter = 6;
while (counter >= 0) {
al = game_state.unknown[0x18 + counter];
if (al < 0x80) {
set_game_state(__func__, 6, counter & 0xFF);
ah = 0;
// si = ax

if (al == 0) {
val = 0x10;
} else {
val = 0x01;
}
al = val;
sub_1ABD(al);
set_game_state(__func__, 0x18 + counter, 0xFF);
}
counter--;
}
cpu.ax = pop_word();
set_game_state(__func__, 6, cpu.ax & 0xFF);
cpu.ax = pop_word();
draw_point.y = (cpu.ax & 0xFF00) >> 8;
draw_point.x = cpu.ax & 0xFF;
set_sb_handler_append_string();
}

static int sub_1C57()
{
unsigned char *c960 = get_player_data_base();
Expand Down

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