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Started decompiling character width loading function

This commit is contained in:
Duncan Frost 2014-06-12 21:49:59 +01:00
parent e335166921
commit 0e3702f463
3 changed files with 145 additions and 107 deletions
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248
src/gfx.c
View File

@ -113,6 +113,46 @@ int gfx_load_g1()
return 0;
}
/*
* 0x6C19AC
*/
void gfx_load_character_widths(){
uint8* char_width_pointer = RCT2_ADDRESS(0x141E9E8, uint8);
for (int char_set_offset = 0; char_set_offset < 4*0xE0; char_set_offset+=0xE0){
for (char c = 0; c < 0xE0; c++, char_width_pointer++){
rct_g1_element g1 = RCT2_ADDRESS(RCT2_ADDRESS_G1_ELEMENTS, rct_g1_element)[c + 0xF15 + char_set_offset];
int width = g1.width - 1;
if (c >= 0x5B && c < 0x7F){
width = 0;
}
*char_width_pointer = (uint8)width;
}
}
uint8 drawing_surface[0x40];
rct_drawpixelinfo dpi;
dpi.bits = &drawing_surface;
dpi.width = 8;
dpi.height = 8;
dpi.x = 0;
dpi.y = 0;
dpi.pitch = 0;
dpi.zoom_level = 0;
for (int i = 0; i < 0xE0; ++i){
memset(drawing_surface, 0, 0x10);
gfx_draw_sprite(&dpi, i + 0x10D5, -1, 0);
uint8* bits_pointer = dpi.bits;
bits_pointer += 0;
for (int y = 0; y < 8; ++y){
for (int x = 0; x < 8; ++x){
}
}
}
}
/**
* Clears the screen with the specified colour.
* rct2: 0x00678A9F
@ -1891,9 +1931,45 @@ void gfx_draw_string(rct_drawpixelinfo *dpi, char *buffer, int colour, int x, in
} else {
if (al < 0x20) {
// Control codes
al -= 0x20;
switch (al) {
case 0x0E5://Start New Line at set y lower
case 1://Start New Line at start+buffer x, same y. (Overwrite?)
al = *(buffer+1);
buffer++;
max_x = x;//RCT2_GLOBAL(0x0EDF840, uint16);
max_x += al;
break;
case 2:
al = *(buffer + 1);
buffer++;
if (*current_font_flags & 1) {
if ((y + 0x13 <= dpi->y) || (dpi->y + dpi->height <= y)) {
skip_char = 1;
break;
}
}
eax = RCT2_ADDRESS(0x097FCBC, uint32)[al * 4];
g1_element = &(RCT2_ADDRESS(RCT2_ADDRESS_G1_ELEMENTS, rct_g1_element)[eax]);
ebx = g1_element->offset[0xF9] + (1 << 8);
if (!(*current_font_flags & 2)) {
ebx = ebx & 0xFF;
}
//Adjust the text palette
RCT2_GLOBAL(0x09ABE05, uint16) = ebx;
memcpy((uint8*)0x09ABE07, &(g1_element->offset[0xF7]), 2);
//ebx = g1_element->offset[0xF7];
//RCT2_GLOBAL(0x09ABE07, uint16) = ebx;
memcpy((uint8*)0x09ABE09, &(g1_element->offset[0xFA]), 2);
//ebx = g1_element->offset[0xFA];
//RCT2_GLOBAL(0x09ABE09, uint16) = ebx;
//Set the palette pointer
RCT2_GLOBAL(0x09ABDA4, uint32) = 0x09ABE04;
if ((y + 0x13 <= dpi->y) || (dpi->y + dpi->height <= y)) {
skip_char = 1;
}
break;
case 5://Start New Line at set y lower
max_x = x;//RCT2_GLOBAL(0x0EDF840, uint16);
max_y += 0x0A;
if (*current_font_sprite_base <= 0x0E) {
@ -1905,7 +1981,7 @@ void gfx_draw_string(rct_drawpixelinfo *dpi, char *buffer, int colour, int x, in
}
max_y -= 0xFFF4;
break;
case 0x0E6://Start New Line at set y lower
case 6://Start New Line at set y lower
max_x = x;//RCT2_GLOBAL(0x0EDF840, uint16);
max_y += 5;
if (*current_font_sprite_base <= 0x0E) {
@ -1917,13 +1993,64 @@ void gfx_draw_string(rct_drawpixelinfo *dpi, char *buffer, int colour, int x, in
}
max_y -= 0xFFFA;//This does not look correct probably should be an add
break;
case 0x0E1://Start New Line at start+buffer x, same y. (Overwrite?)
al = *(buffer+1);
buffer++;
max_x = x;//RCT2_GLOBAL(0x0EDF840, uint16);
max_x += al;
case 7:
*current_font_sprite_base = 0x1C0;
break;
case 0x0F1: //Start new line at specified x,y
case 8:
*current_font_sprite_base = 0x2A0;
break;
case 9:
*current_font_sprite_base = 0xE0;
break;
case 0xA:
*current_font_sprite_base = 0;
break;
case 0xB:
*current_font_flags |= 2;
break;
case 0xC:
*current_font_flags &= 0x0FFFD;
break;
case 0xD:
ebp = RCT2_GLOBAL(0x0141F740, uint8);
if (*current_font_flags & 1) {
if ((y + 0x13 <= dpi->y) || (dpi->y + dpi->height <= y)) {
skip_char = 1;
}
else {
skip_char = 0;
}
break;
}
sub_682AC7(ebp, current_font_flags);
break;
case 0xE:
ebp = RCT2_GLOBAL(0x0141F741, uint8);
if (*current_font_flags & 1) {
if ((y + 0x13 <= dpi->y) || (dpi->y + dpi->height <= y)) {
skip_char = 1;
}
else {
skip_char = 0;
}
break;
}
sub_682AC7(ebp, current_font_flags);
break;
case 0xF:
ebp = RCT2_GLOBAL(0x0141F742, uint8);
if (*current_font_flags & 1) {
if ((y + 0x13 <= dpi->y) || (dpi->y + dpi->height <= y)) {
skip_char = 1;
}
else {
skip_char = 0;
}
break;
}
sub_682AC7(ebp, current_font_flags);
break;
case 0x11: //Start new line at specified x,y
eax = *((uint16*)(buffer+1));
buffer += 2;
max_x = x;//RCT2_GLOBAL(0x0EDF840, uint16);
@ -1931,92 +2058,7 @@ void gfx_draw_string(rct_drawpixelinfo *dpi, char *buffer, int colour, int x, in
max_y = y;//RCT2_GLOBAL(0x0EDF842, uint16);
max_y += (eax & 0xFF00) >> 8;
break;
case 0x0E7:
*current_font_sprite_base = 0x1C0;
break;
case 0x0E8:
*current_font_sprite_base = 0x2A0;
break;
case 0x0E9:
*current_font_sprite_base = 0xE0;
break;
case 0x0EA:
*current_font_sprite_base = 0;
break;
case 0x0EB:
*current_font_flags |= 2;
break;
case 0x0EC:
*current_font_flags &= 0x0FFFD;
break;
case 0x0ED:
ebp = RCT2_GLOBAL(0x0141F740, uint8);
if (*current_font_flags & 1) {
if ((y + 0x13 <= dpi->y) || (dpi->y + dpi->height <= y)) {
skip_char = 1;
} else {
skip_char = 0;
}
break;
}
sub_682AC7(ebp, current_font_flags);
break;
case 0x0EE:
ebp = RCT2_GLOBAL(0x0141F741, uint8);
if (*current_font_flags & 1) {
if ((y + 0x13 <= dpi->y) || (dpi->y + dpi->height <= y)) {
skip_char = 1;
} else {
skip_char = 0;
}
break;
}
sub_682AC7(ebp, current_font_flags);
break;
case 0x0EF:
ebp = RCT2_GLOBAL(0x0141F742, uint8);
if (*current_font_flags & 1) {
if ((y + 0x13 <= dpi->y) || (dpi->y + dpi->height <= y)) {
skip_char = 1;
} else {
skip_char = 0;
}
break;
}
sub_682AC7(ebp, current_font_flags);
break;
case 0x0E2:
al = *(buffer+1);
buffer++;
if (*current_font_flags & 1) {
if ((y + 0x13 <= dpi->y) || (dpi->y + dpi->height <= y)) {
skip_char = 1;
break;
}
}
eax = RCT2_ADDRESS(0x097FCBC, uint32)[al*4];
g1_element = &(RCT2_ADDRESS(RCT2_ADDRESS_G1_ELEMENTS, rct_g1_element)[eax]);
ebx = g1_element->offset[0xF9] + (1 << 8);
if (!(*current_font_flags & 2)) {
ebx = ebx & 0xFF;
}
//Adjust the text palette
RCT2_GLOBAL(0x09ABE05, uint16) = ebx;
memcpy((uint8*)0x09ABE07,&(g1_element->offset[0xF7]),2);
//ebx = g1_element->offset[0xF7];
//RCT2_GLOBAL(0x09ABE07, uint16) = ebx;
memcpy((uint8*)0x09ABE09,&(g1_element->offset[0xFA]),2);
//ebx = g1_element->offset[0xFA];
//RCT2_GLOBAL(0x09ABE09, uint16) = ebx;
//Set the palette pointer
RCT2_GLOBAL(0x09ABDA4, uint32) = 0x09ABE04;
if ((y + 0x13 <= dpi->y) || (dpi->y + dpi->height <= y)) {
skip_char = 1;
}
break;
case 0x0F7:
case 0x17:
buffer += 4;
if (max_x >= dpi->x + dpi->width) {
skip_char = 1;
@ -2033,33 +2075,27 @@ void gfx_draw_string(rct_drawpixelinfo *dpi, char *buffer, int colour, int x, in
}
} else {
al -= 0x20;
if (max_x >= dpi->x + dpi->width) {
skip_char = 1;
}
if (max_x + 0x1A < dpi->x) {
ebx = al;
ebx = al-0x20;
ebx += *current_font_sprite_base;
max_x = max_x + (RCT2_ADDRESS(0x0141E9E8, uint8)[ebx] & 0xFF);
continue;
}
ebx = al + *current_font_sprite_base;
ebx = al-0x20 + *current_font_sprite_base;
ecx = max_x;
max_x = max_x + (RCT2_ADDRESS(0x0141E9E8, uint8)[ebx] & 0xFF);
max_x += (RCT2_ADDRESS(0x0141E9E8, uint8)[ebx] & 0xFF);
eax = (int)al;
ebx += 0xF15;
edx = max_y;
esi = (int)buffer;
edi = (int)dpi;
ebp = 0;
RCT2_GLOBAL(0x00EDF81C, uint32) = 0x20000000;
gfx_draw_sprite_palette_set(dpi, 0x20000000 | ebx, ecx, edx, RCT2_GLOBAL(0x9ABDA4, uint8*), NULL);
gfx_draw_sprite_palette_set(dpi, 0x20000000 | ebx, ecx, max_y, RCT2_GLOBAL(0x9ABDA4, uint8*), NULL);
continue;
}

1
src/gfx.h
View File

@ -62,6 +62,7 @@ extern int gLastDrawStringX;
extern int gLastDrawStringY;
int gfx_load_g1();
void gfx_load_character_widths();
void gfx_clear(rct_drawpixelinfo *dpi, int colour);
void gfx_draw_pixel(rct_drawpixelinfo *dpi, int x, int y, int colour);

3
src/rct2.c
View File

@ -157,7 +157,8 @@ void rct2_init()
scenario_load_list();
track_load_list(253);
gfx_load_g1();
RCT2_CALLPROC_EBPSAFE(0x006C19AC);
gfx_load_character_widths();
//RCT2_CALLPROC_EBPSAFE(0x006C19AC); //Load character widths
osinterface_init();
RCT2_CALLPROC_EBPSAFE(0x006BA8E0); // init_audio();
viewport_init_all();