mirror of https://github.com/OpenRCT2/OpenRCT2.git
552 lines
14 KiB
C
552 lines
14 KiB
C
/*****************************************************************************
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* Copyright (c) 2014 Ted John
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* OpenRCT2, an open source clone of Roller Coaster Tycoon 2.
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*
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* This file is part of OpenRCT2.
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*
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* OpenRCT2 is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*****************************************************************************/
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#include "addresses.h"
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#include "localisation/localisation.h"
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#include "object.h"
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#include "platform/platform.h"
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#include "util/sawyercoding.h"
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int object_load_entry(const char *path, rct_object_entry *outEntry)
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{
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FILE *file;
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file = fopen(path, "rb");
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if (file == NULL)
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return 0;
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if (fread(outEntry, sizeof(rct_object_entry), 1, file) != 1) {
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fclose(file);
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return 0;
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}
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fclose(file);
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return 1;
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}
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int object_load_file(int groupIndex, const rct_object_entry *entry, int* chunkSize, const rct_object_entry *installedObject)
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{
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uint8 objectType;
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rct_object_entry openedEntry;
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char path[260];
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FILE *file;
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subsitute_path(path, RCT2_ADDRESS(RCT2_ADDRESS_OBJECT_DATA_PATH, char), (char*)installedObject + 16);
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log_verbose("loading object, %s", path);
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file = fopen(path, "rb");
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if (file == NULL)
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return 0;
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fread(&openedEntry, sizeof(rct_object_entry), 1, file);
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if (!object_entry_compare(&openedEntry, entry)) {
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fclose(file);
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return 0;
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}
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// Get chunk size
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uint8 *installedObject_pointer = (uint8*)installedObject + 16;
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// Skip file name
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while (*installedObject_pointer++);
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// Read chunk size
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*chunkSize = *((uint32*)installedObject_pointer);
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char *chunk;
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if (*chunkSize == 0xFFFFFFFF) {
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chunk = rct2_malloc(0x600000);
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*chunkSize = sawyercoding_read_chunk(file, chunk);
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chunk = rct2_realloc(chunk, *chunkSize);
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}
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else {
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chunk = rct2_malloc(*chunkSize);
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*chunkSize = sawyercoding_read_chunk(file, chunk);
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}
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fclose(file);
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// Calculate and check checksum
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if (object_calculate_checksum(&openedEntry, chunk, *chunkSize) != openedEntry.checksum) {
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log_error("Object Load failed due to checksum failure.");
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RCT2_GLOBAL(0x00F42BD9, uint8) = 2;
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rct2_free(chunk);
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return 0;
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}
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objectType = openedEntry.flags & 0x0F;
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if (object_paint(objectType, 2, 0, objectType, 0, (int)chunk, 0, 0)) {
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log_error("Object Load failed due to paint failure.");
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RCT2_GLOBAL(0x00F42BD9, uint8) = 3;
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rct2_free(chunk);
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return 0;
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}
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int yyy = RCT2_GLOBAL(0x009ADAF0, uint32);
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if (yyy >= 0x4726E){
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log_error("Object Load failed due to yyy failure.");
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RCT2_GLOBAL(0x00F42BD9, uint8) = 4;
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rct2_free(chunk);
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return 0;
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}
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uint8** chunk_list = object_entry_groups[objectType].chunks;
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if (groupIndex == -1) {
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for (groupIndex = 0; chunk_list[groupIndex] != (uint8*)-1; groupIndex++) {
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if (groupIndex + 1 >= object_entry_group_counts[objectType]) {
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log_error("Object Load failed due to too many objects of a certain type.");
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RCT2_GLOBAL(0x00F42BD9, uint8) = 5;
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rct2_free(chunk);
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return 0;
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}
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}
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}
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chunk_list[groupIndex] = chunk;
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rct_object_entry_extended* extended_entry = &object_entry_groups[objectType].entries[groupIndex];
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memcpy(extended_entry, &openedEntry, sizeof(rct_object_entry));
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extended_entry->chunk_size = *chunkSize;
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RCT2_GLOBAL(RCT2_ADDRESS_CURR_OBJECT_CHUNK_POINTER, char*) = chunk;
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if (RCT2_GLOBAL(0x9ADAFD, uint8) != 0)
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object_paint(objectType, 0, groupIndex, objectType, 0, (int)chunk, 0, 0);
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return 1;
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}
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/**
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*
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* rct2: 0x006A985D
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*/
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int object_load(int groupIndex, rct_object_entry *entry, int* chunkSize)
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{
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// Alow chunkSize to be null
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int tempChunkSize;
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if (chunkSize == NULL)
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chunkSize = &tempChunkSize;
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RCT2_GLOBAL(0xF42B64, uint32) = groupIndex;
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if (RCT2_GLOBAL(RCT2_ADDRESS_OBJECT_LIST_NO_ITEMS, uint32) == 0) {
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RCT2_GLOBAL(0xF42BD9, uint8) = 0;
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log_error("Object Load failed due to no items installed check.");
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return 1;
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}
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rct_object_entry *installedObject = object_list_find(entry);
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if (installedObject == NULL) {
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log_error("object not installed");
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return 0;
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}
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if (object_load_file(groupIndex, entry, chunkSize, installedObject))
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return 1;
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return 0;
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}
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/** rct2: 0x006a9f42
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* ebx : file
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* ebp : entry
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*/
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int sub_6A9F42(FILE *file, rct_object_entry* entry){
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int eax = 0, entryGroupIndex = 0, type = 0, edx = 0, edi = 0, ebp = (int)entry, chunk = 0;
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RCT2_CALLFUNC_X(0x6A9DA2, &eax, &entryGroupIndex, &type, &edx, &chunk, &edi, &ebp);
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if (eax == 0) return 0;
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object_paint(type, 1, entryGroupIndex, type, edx, chunk, edi, ebp);
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rct_object_entry_extended* installed_entry = &object_entry_groups[type].entries[entryGroupIndex];
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uint8* dst_buffer = malloc(0x600000);
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memcpy(dst_buffer, (uint8*)installed_entry, sizeof(rct_object_entry));
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uint32 size_dst = sizeof(rct_object_entry);
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sawyercoding_chunk_header chunkHeader;
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// Encoding type (not used anymore)
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RCT2_GLOBAL(0x9E3CBD, uint8) = object_entry_group_encoding[type];
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chunkHeader.encoding = object_entry_group_encoding[type];
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chunkHeader.length = installed_entry->chunk_size;
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size_dst += sawyercoding_write_chunk_buffer(dst_buffer + sizeof(rct_object_entry), (uint8*)chunk, chunkHeader);
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fwrite(dst_buffer, 1, size_dst, file);
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free(dst_buffer);
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return 1;
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}
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/**
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*
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* rct2: 0x006AA2B7
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*/
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int object_load_packed(FILE *file)
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{
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object_unload_all();
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rct_object_entry* entry = RCT2_ADDRESS(0xF42B84, rct_object_entry);
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fread((void*)entry, 16, 1, file);
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uint8* chunk = rct2_malloc(0x600000);
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uint32 chunkSize = sawyercoding_read_chunk(file, chunk);
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chunk = rct2_realloc(chunk, chunkSize);
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if (chunk == NULL){
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return 0;
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}
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if (object_calculate_checksum(entry, chunk, chunkSize) != entry->checksum){
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rct2_free(chunk);
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return 0;
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}
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if (object_paint(entry->flags & 0x0F, 2, 0, entry->flags & 0x0F, 0, (int)chunk, 0, 0)) {
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rct2_free(chunk);
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return 0;
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}
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int yyy = RCT2_GLOBAL(0x009ADAF0, uint32);
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if (yyy >= 0x4726E){
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rct2_free(chunk);
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return 0;
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}
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int type = entry->flags & 0x0F;
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// ecx
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int entryGroupIndex = 0;
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for (; entryGroupIndex < object_entry_group_counts[type]; entryGroupIndex++){
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if (object_entry_groups[type].chunks[entryGroupIndex] == (uint8*)-1){
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break;
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}
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}
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if (entryGroupIndex == object_entry_group_counts[type]){
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rct2_free(chunk);
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return 0;
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}
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object_entry_groups[type].chunks[entryGroupIndex] = chunk;
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rct_object_entry_extended* edx = &object_entry_groups[type].entries[entryGroupIndex];
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memcpy(edx, (int*)entry, sizeof(rct_object_entry));
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edx->chunk_size = chunkSize;
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//esi
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rct_object_entry *installedObject = RCT2_GLOBAL(RCT2_ADDRESS_INSTALLED_OBJECT_LIST, rct_object_entry*);
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if (RCT2_GLOBAL(RCT2_ADDRESS_OBJECT_LIST_NO_ITEMS, uint32)){
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for (uint32 i = 0; i < RCT2_GLOBAL(RCT2_ADDRESS_OBJECT_LIST_NO_ITEMS, uint32); ++i){
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if (object_entry_compare(entry, installedObject)){
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object_unload_all();
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return 0;
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}
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installedObject = object_get_next(installedObject);
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}
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}
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//Installing new data
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//format_string(0x141ED68, 3163, 0);
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//Code for updating progress bar removed.
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char path[260];
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char objectPath[13] = { 0 };
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for (int i = 0; i < 8; ++i){
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if (entry->name[i] != ' ')
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objectPath[i] = toupper(entry->name[i]);
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else
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objectPath[i] = '\0';
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}
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subsitute_path(path, RCT2_ADDRESS(RCT2_ADDRESS_OBJECT_DATA_PATH, char), objectPath);
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char* last_char = path + strlen(path);
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strcat(path, ".DAT");
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//
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for (; platform_file_exists(path);){
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for (char* curr_char = last_char - 1;; --curr_char){
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if (*curr_char == '\\'){
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subsitute_path(path, RCT2_ADDRESS(RCT2_ADDRESS_OBJECT_DATA_PATH, char), "00000000.DAT");
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char* last_char = path + strlen(path);
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break;
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}
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if (*curr_char < '0') *curr_char = '0';
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else if (*curr_char == '9') *curr_char = 'A';
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else if (*curr_char == 'Z') *curr_char = '0';
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else (*curr_char)++;
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if (*curr_char != '0') break;
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}
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}
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// Removed progress bar code
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// The following section cannot be finished until 6A9F42 is finished
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// Run the game once with vanila rct2 to not reach this part of code.
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log_verbose("Function might not be finished.");
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FILE* obj_file = fopen(path, "wb");
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if (obj_file){
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// Removed progress bar code
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sub_6A9F42(obj_file, entry);
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fclose(obj_file);
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// Removed progress bar code
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object_unload_all();
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// Removed progress bar code
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return 1;
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}
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else{
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object_unload_all();
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return 0;
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}
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//create file
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//6aa48C
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int eax = 1;//, ebx = 0, ecx = 0, edx = 0, esi = 0, edi = 0, ebp = 0;
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//RCT2_CALLFUNC_X(0x006AA2B7, &eax, &ebx, &ecx, &edx, &esi, &edi, &ebp);
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return 1;
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}
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/**
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*
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* rct2: 0x006A9CAF
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*/
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void object_unload(int groupIndex, rct_object_entry_extended *entry)
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{
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RCT2_CALLPROC_X(0x006A9CAF, 0, groupIndex, 0, 0, 0, 0, (int)entry);
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}
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int object_entry_compare(const rct_object_entry *a, const rct_object_entry *b)
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{
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if (a->flags & 0xF0) {
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if ((a->flags & 0x0F) != (b->flags & 0x0F))
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return 0;
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if (*((uint32*)a->name) != *((uint32*)b->name))
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return 0;
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if (*((uint32*)(&a->name[4])) != *((uint32*)(&b->name[4])))
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return 0;
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} else {
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if (a->flags != b->flags)
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return 0;
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if (*((uint32*)a->name) != *((uint32*)b->name))
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return 0;
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if (*((uint32*)(&a->name[4])) != *((uint32*)(&b->name[4])))
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return 0;
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if (a->checksum != b->checksum)
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return 0;
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}
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return 1;
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}
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int object_calculate_checksum(const rct_object_entry *entry, const char *data, int dataLength)
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{
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int i;
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const char *eee = (char*)entry;
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int checksum = 0xF369A75B;
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char *ccc = (char*)&checksum;
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*ccc ^= eee[0];
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checksum = rol32(checksum, 11);
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for (i = 4; i < 12; i++) {
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*ccc ^= eee[i];
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checksum = rol32(checksum, 11);
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}
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for (i = 0; i < dataLength; i++) {
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*ccc ^= data[i];
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checksum = rol32(checksum, 11);
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}
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return checksum;
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}
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/**
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* rct2: 0x66B355 part
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* If al is 0
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* chunk : esi
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*/
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int object_scenario_load_custom_text(char* chunk){
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int ebp = (int)(&((uint32*)chunk)[2]);
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int edx = 0;
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int eax, ebx, ecx, edi;
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RCT2_CALLFUNC_X(0x6A9E24, &eax, &ebx, &ecx, &edx, (int*)&chunk, &edi, &ebp);
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*((uint16*)chunk) = eax;
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edx++;
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RCT2_CALLFUNC_X(0x6A9E24, &eax, &ebx, &ecx, &edx, (int*)&chunk, &edi, &ebp);
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*((uint16*)chunk + 1) = eax;
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edx++;
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RCT2_CALLFUNC_X(0x6A9E24, &eax, &ebx, &ecx, &edx, (int*)&chunk, &edi, &ebp);
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*((uint16*)chunk + 2) = eax;
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if (RCT2_GLOBAL(0x9ADAF4, int) == -1)return 0;
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else *(RCT2_GLOBAL(0x9ADAF4, uint32*)) = 0;
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return 1;
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}
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int object_paint(int type, int eax, int ebx, int ecx, int edx, int esi, int edi, int ebp)
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{
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//if (type == OBJECT_TYPE_SCENARIO_TEXT){
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// if (eax == 0) return object_scenario_load_custom_text((char*)esi);
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//}
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return RCT2_CALLPROC_X(RCT2_ADDRESS(0x0098D9D4, uint32)[type], eax, ebx, ecx, edx, esi, edi, ebp) & 0x100;
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}
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/**
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*
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* rct2: 0x006A9428
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*/
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int object_get_scenario_text(rct_object_entry *entry)
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{
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// RCT2_CALLPROC_X(0x006A9428, 0, 0, 0, 0, 0, 0, (int)entry); return;
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int i;
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rct_object_entry *installedObject = RCT2_GLOBAL(RCT2_ADDRESS_INSTALLED_OBJECT_LIST, rct_object_entry*);
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for (i = 0; i < RCT2_GLOBAL(RCT2_ADDRESS_OBJECT_LIST_NO_ITEMS, sint32); i++) {
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if (object_entry_compare(installedObject, entry)) {
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char path[260];
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char *objectPath = (char*)installedObject + 16;
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subsitute_path(path, RCT2_ADDRESS(RCT2_ADDRESS_OBJECT_DATA_PATH, char), objectPath);
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rct_object_entry openedEntry;
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FILE *file = fopen(path, "rb");
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if (file != NULL) {
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fread(&openedEntry, sizeof(rct_object_entry), 1, file);
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if (object_entry_compare(&openedEntry, entry)) {
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// Get chunk size
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char *pos = (char*)installedObject + 16;
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// Skip file name
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while (*pos++);
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// Read chunk
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int chunkSize = *((uint32*)pos);
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char *chunk;
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if (chunkSize == 0xFFFFFFFF) {
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chunk = malloc(0x600000);
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chunkSize = sawyercoding_read_chunk(file, chunk);
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chunk = realloc(chunk, chunkSize);
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} else {
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chunk = malloc(chunkSize);
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sawyercoding_read_chunk(file, chunk);
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}
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fclose(file);
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// Calculate and check checksum
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if (object_calculate_checksum(&openedEntry, chunk, chunkSize) != openedEntry.checksum) {
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RCT2_GLOBAL(0x00F42BD9, uint8) = 2;
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free(chunk);
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return 0;
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}
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if (object_paint(openedEntry.flags & 0x0F, 2, 0, 0, 0, (int)chunk, 0, 0)) {
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RCT2_GLOBAL(0x00F42BD9, uint8) = 3;
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free(chunk);
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return 0;
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}
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int yyy = RCT2_GLOBAL(0x009ADAF0, uint32);
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RCT2_GLOBAL(0x009ADAF0, uint32) = 0x726E;
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RCT2_GLOBAL(0x009ADAF8, uint32) = (int)chunk;
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*((rct_object_entry*)0x00F42BC8) = openedEntry;
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RCT2_GLOBAL(0x009ADAFC, uint8) = 255;
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RCT2_GLOBAL(0x009ADAFD, uint8) = 1;
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object_paint(openedEntry.flags & 0x0F, 0, 0, 0, 0, (int)chunk, 0, 0);
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RCT2_GLOBAL(0x009ADAFC, uint8) = 0;
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RCT2_GLOBAL(0x009ADAFD, uint8) = 0;
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RCT2_GLOBAL(0x009ADAF0, uint32) = yyy;
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return 1;
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}
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|
fclose(file);
|
|
}
|
|
}
|
|
installedObject = object_get_next(installedObject);
|
|
}
|
|
|
|
RCT2_GLOBAL(0x00F42BD9, uint8) = 0;
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
*
|
|
* rct2: 0x006A982D
|
|
*/
|
|
void object_free_scenario_text()
|
|
{
|
|
if (RCT2_GLOBAL(0x009ADAF8, void*) != NULL) {
|
|
rct2_free(RCT2_GLOBAL(0x009ADAF8, void*));
|
|
RCT2_GLOBAL(0x009ADAF8, void*) = NULL;
|
|
}
|
|
}
|
|
|
|
int object_get_length(rct_object_entry *entry)
|
|
{
|
|
return (int)object_get_next(entry) - (int)entry;
|
|
}
|
|
|
|
rct_object_entry *object_get_next(rct_object_entry *entry)
|
|
{
|
|
uint8 *pos = (uint8*)entry;
|
|
|
|
// Skip sizeof(rct_object_entry)
|
|
pos += 16;
|
|
|
|
// Skip filename
|
|
while (*pos++);
|
|
|
|
// Skip
|
|
pos += 4;
|
|
|
|
// Skip name
|
|
while (*pos++);
|
|
|
|
// Skip size of chunk
|
|
pos += 4;
|
|
|
|
// Skip
|
|
pos += *pos++ * 16;
|
|
|
|
// Skip theme objects
|
|
pos += *pos++ * 16;
|
|
|
|
// Skip
|
|
pos += 4;
|
|
|
|
return (rct_object_entry*)pos;
|
|
}
|
|
|
|
char *object_get_name(rct_object_entry *entry)
|
|
{
|
|
uint8 *pos = (uint8*)entry;
|
|
|
|
// Skip sizeof(rct_object_entry)
|
|
pos += 16;
|
|
|
|
// Skip filename
|
|
while (*pos++);
|
|
|
|
// Skip
|
|
pos += 4;
|
|
|
|
return pos;
|
|
} |