/*****************************************************************************
* Copyright (c) 2014 Ted John
* OpenRCT2, an open source clone of Roller Coaster Tycoon 2.
*
* This file is part of OpenRCT2.
*
* OpenRCT2 is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program. If not, see .
*****************************************************************************/
#include
#include "addresses.h"
#include "object.h"
#include "util/sawyercoding.h"
#define OBJECT_ENTRY_GROUP_COUNT 11
#define OBJECT_ENTRY_COUNT 721
typedef struct {
uint32 total_files;
uint32 total_file_size;
uint32 date_modified_checksum;
uint32 object_list_size;
uint32 var_10;
} rct_plugin_header;
// 98DA00
int object_entry_group_counts[] = {
128, // rides
252, // small scenery
128, // large scenery
128, // walls
32, // banners
16, // paths
15, // path bits
19, // scenery sets
1, // park entrance
1, // water
1 // scenario text
};
// 98DA2C
int object_entry_group_encoding[] = {
CHUNK_ENCODING_RLE,
CHUNK_ENCODING_RLE,
CHUNK_ENCODING_RLE,
CHUNK_ENCODING_RLE,
CHUNK_ENCODING_RLE,
CHUNK_ENCODING_RLE,
CHUNK_ENCODING_RLE,
CHUNK_ENCODING_RLE,
CHUNK_ENCODING_RLE,
CHUNK_ENCODING_RLE,
CHUNK_ENCODING_ROTATE
};
struct { void **data; rct_object_entry_extended *entries; } object_entry_groups[] = {
(void**)(0x009ACFA4 ), (rct_object_entry_extended*)(0x00F3F03C ), // rides
(void**)(0x009ACFA4 + (128 * 4)), (rct_object_entry_extended*)(0x00F3F03C + (128 * 20)), // small scenery
(void**)(0x009ACFA4 + (380 * 4)), (rct_object_entry_extended*)(0x00F3F03C + (380 * 20)), // large scenery
(void**)(0x009ACFA4 + (508 * 4)), (rct_object_entry_extended*)(0x00F3F03C + (508 * 20)), // walls
(void**)(0x009ACFA4 + (636 * 4)), (rct_object_entry_extended*)(0x00F3F03C + (636 * 20)), // banners
(void**)(0x009ACFA4 + (668 * 4)), (rct_object_entry_extended*)(0x00F3F03C + (668 * 20)), // paths
(void**)(0x009ACFA4 + (684 * 4)), (rct_object_entry_extended*)(0x00F3F03C + (684 * 20)), // path bits
(void**)(0x009ACFA4 + (699 * 4)), (rct_object_entry_extended*)(0x00F3F03C + (699 * 20)), // scenery sets
(void**)(0x009ACFA4 + (718 * 4)), (rct_object_entry_extended*)(0x00F3F03C + (718 * 20)), // park entrance
(void**)(0x009ACFA4 + (719 * 4)), (rct_object_entry_extended*)(0x00F3F03C + (719 * 20)), // water
(void**)(0x009ACFA4 + (720 * 4)), (rct_object_entry_extended*)(0x00F3F03C + (720 * 20)) // scenario text
};
/**
*
* rct2: 0x006A93CD
*/
static void object_list_examine()
{
int i;
rct_object_entry *object;
object = RCT2_GLOBAL(RCT2_ADDRESS_INSTALLED_OBJECT_LIST, rct_object_entry*);
for (i = 0; i < RCT2_GLOBAL(0x00F42B6C, sint32); i++) {
if (object->flags & 0xF0)
RCT2_GLOBAL(0x00F42BDA, uint8) |= 1;
object = object_get_next(object);
}
}
/**
*
* rct2: 0x006A8B40
*/
void object_list_load()
{
HANDLE hFindFile;
WIN32_FIND_DATAA findFileData;
int totalFiles = 0, totalFileSize = 0, fileDateModifiedChecksum = 0;
// Enumerate through each object in the directory
hFindFile = FindFirstFile(RCT2_ADDRESS(RCT2_ADDRESS_OBJECT_DATA_PATH, char), &findFileData);
if (hFindFile != INVALID_HANDLE_VALUE) {
do {
totalFiles++;
totalFileSize += findFileData.nFileSizeLow;
fileDateModifiedChecksum ^=
findFileData.ftLastWriteTime.dwLowDateTime ^
findFileData.ftLastWriteTime.dwHighDateTime;
fileDateModifiedChecksum = ror32(fileDateModifiedChecksum, 5);
} while (FindNextFile(hFindFile, &findFileData));
FindClose(hFindFile);
}
totalFiles = ror32(totalFiles, 24);
totalFiles = (totalFiles & ~0xFF) | 1;
totalFiles = rol32(totalFiles, 24);
// Read plugin header
rct_plugin_header pluginHeader;
FILE *file = fopen(get_file_path(PATH_ID_PLUGIN), "rb");
if (file != NULL) {
if (fread(&pluginHeader, sizeof(pluginHeader), 1, file) == 1) {
// Check if object repository has changed in anyway
if (
totalFiles == pluginHeader.total_files &&
totalFileSize == pluginHeader.total_file_size &&
fileDateModifiedChecksum == pluginHeader.date_modified_checksum
) {
// Dispose installed object list
if (RCT2_GLOBAL(RCT2_ADDRESS_INSTALLED_OBJECT_LIST, sint32) != -1) {
rct2_free(RCT2_GLOBAL(RCT2_ADDRESS_INSTALLED_OBJECT_LIST, void*));
RCT2_GLOBAL(RCT2_ADDRESS_INSTALLED_OBJECT_LIST, sint32) = -1;
}
// Read installed object list
RCT2_GLOBAL(RCT2_ADDRESS_INSTALLED_OBJECT_LIST, void*) = rct2_malloc(pluginHeader.object_list_size);
if (fread(RCT2_GLOBAL(RCT2_ADDRESS_INSTALLED_OBJECT_LIST, void*), pluginHeader.object_list_size, 1, file) == 1) {
RCT2_GLOBAL(0x00F42B6C, uint32) = pluginHeader.var_10;
fclose(file);
RCT2_CALLPROC_EBPSAFE(0x006A9FC0);
object_list_examine();
return;
}
}
}
fclose(file);
}
// Reload object list
RCT2_GLOBAL(0x00F42B94, uint32) = totalFiles;
RCT2_GLOBAL(0x00F42B98, uint32) = totalFileSize;
RCT2_GLOBAL(0x00F42B9C, uint32) = fileDateModifiedChecksum;
RCT2_CALLPROC_EBPSAFE(0x006A8D8F);
}
static int check_object_entry(rct_object_entry *entry)
{
uint32 *dwords = (uint32*)entry;
return (0xFFFFFFFF & dwords[0] & dwords[1] & dwords[2] & dwords[3]) + 1 != 0;
}
/**
*
* rct2: 0x006AA0C6
*/
int object_read_and_load_entries(FILE *file)
{
object_unload_all();
int i, j;
rct_object_entry *entries;
// Read all the object entries
entries = malloc(OBJECT_ENTRY_COUNT * sizeof(rct_object_entry));
sawyercoding_read_chunk(file, (uint8*)entries);
// Load each object
for (i = 0; i < OBJECT_ENTRY_COUNT; i++) {
if (!check_object_entry(&entries[i]))
continue;
// Get entry group index
int entryGroupIndex = i;
for (j = 0; j < countof(object_entry_group_counts); j++) {
if (entryGroupIndex < object_entry_group_counts[j])
break;
entryGroupIndex -= object_entry_group_counts[j];
}
// Load the obect
if (!object_load(entryGroupIndex, &entries[i])) {
// Failed to load the object
//Destroy progress bar
memcpy((char*)0x13CE952, entries[i].name, 8);
free(entries);
object_unload_all();
RCT2_GLOBAL(0x14241BC, uint32) = 0;
return 0;
}
}
free(entries);
return 1;
}
/**
*
* rct2: 0x006A9CE8
*/
void object_unload_all()
{
int i, j;
for (i = 0; i < OBJECT_ENTRY_GROUP_COUNT; i++)
for (j = 0; j < object_entry_group_counts[i]; j++)
if (object_entry_groups[i].data[j] != (void**)0xFFFFFFFF)
object_unload(j, &object_entry_groups[i].entries[j]);
}