Support custom imagefiles

This commit is contained in:
fed 2023-01-14 20:04:09 +01:00
parent e90f0a2343
commit d42f36af50
3 changed files with 187 additions and 0 deletions

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@ -0,0 +1,151 @@
#include <std_include.hpp>
#include "loader/component_loader.hpp"
#include "images.hpp"
#include "console.hpp"
#include "filesystem.hpp"
#include "fastfiles.hpp"
#include "scheduler.hpp"
#include "game/game.hpp"
#include <utils/hook.hpp>
#include <utils/string.hpp>
#include <utils/io.hpp>
#include <utils/concurrency.hpp>
#define CUSTOM_IMAGE_FILE_INDEX 96
namespace imagefiles
{
namespace
{
struct image_file_unk
{
char __pad0[120];
};
std::unordered_map<std::string, image_file_unk*> image_file_unk_map;
std::unordered_map<std::string, game::DB_IFileSysFile*> image_file_handles;
std::string get_image_file_name()
{
return fastfiles::get_current_fastfile();
}
image_file_unk* get_image_file_unk(unsigned int index)
{
if (index != CUSTOM_IMAGE_FILE_INDEX)
{
return &reinterpret_cast<image_file_unk*>(
SELECT_VALUE(0x4802090_b, 0x6306770_b))[index];
}
const auto name = get_image_file_name();
if (image_file_unk_map.find(name) == image_file_unk_map.end())
{
const auto unk = utils::memory::get_allocator()->allocate<image_file_unk>();
image_file_unk_map[name] = unk;
return unk;
}
return image_file_unk_map[name];
}
game::DB_IFileSysFile* get_image_file_handle(unsigned int index)
{
if (index != CUSTOM_IMAGE_FILE_INDEX)
{
return reinterpret_cast<game::DB_IFileSysFile**>(
SELECT_VALUE(0x4801D80_b, 0x6306180_b))[index];
}
const auto name = get_image_file_name();
return image_file_handles[name];
}
void db_create_gfx_image_stream_stub(utils::hook::assembler& a)
{
const auto check_image_file_handle = a.newLabel();
const auto handle_is_open = a.newLabel();
a.movzx(eax, cx);
a.push(rax);
a.push(rax);
a.pushad64();
a.mov(rcx, rax);
a.call_aligned(get_image_file_unk);
a.mov(qword_ptr(rsp, 0x80), rax);
a.popad64();
a.pop(rax);
a.mov(rsi, rax);
a.pop(rax);
a.push(rax);
a.push(rax);
a.pushad64();
a.mov(rcx, rax);
a.call_aligned(get_image_file_handle);
a.mov(qword_ptr(rsp, 0x80), rax);
a.popad64();
a.pop(rax);
a.mov(r12, rax);
a.pop(rax);
a.cmp(r12, r13);
a.jnz(handle_is_open);
a.jmp(SELECT_VALUE(0x1FAD49_b, 0x3A0CA5_b));
a.bind(handle_is_open);
a.jmp(SELECT_VALUE(0x1FAD99_b, 0x3A0CF5_b));
}
void* pakfile_open_stub(void* /*handles*/, unsigned int count, int is_imagefile,
unsigned int index, int is_localized)
{
if (index != CUSTOM_IMAGE_FILE_INDEX)
{
return utils::hook::invoke<void*>(
SELECT_VALUE(0x42BC00_b, 0x5B2030_b),
SELECT_VALUE(0x4801D80_b, 0x6306180_b),
count, is_imagefile, index, is_localized
);
}
const auto name = get_image_file_name();
const auto db_fs = *game::db_fs;
const auto handle = db_fs->vftbl->OpenFile(db_fs,
game::SF_PAKFILE, utils::string::va("%s.pak", name.data()));
if (handle != nullptr)
{
image_file_handles[name] = handle;
}
return handle;
}
int com_sprintf_stub(char* buffer, const int len, const char* fmt, unsigned int index)
{
if (index != CUSTOM_IMAGE_FILE_INDEX)
{
return game::Com_sprintf(buffer, len, fmt, index);
}
const auto name = get_image_file_name();
return game::Com_sprintf(buffer, len, "%s.pak", name.data());
}
}
class component final : public component_interface
{
public:
void post_unpack() override
{
utils::hook::jump(SELECT_VALUE(0x1FAD35_b, 0x3A0C95_b),
utils::hook::assemble(db_create_gfx_image_stream_stub), true);
utils::hook::call(SELECT_VALUE(0x1FAD7B_b, 0x3A0CD7_b), pakfile_open_stub);
utils::hook::call(SELECT_VALUE(0x1FAD5D_b, 0x3A0CB9_b), com_sprintf_stub);
}
};
}
REGISTER_COMPONENT(imagefiles::component)

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@ -223,6 +223,40 @@ namespace game
SF_COUNT = 0x6,
};
enum FileSysResult : std::int32_t
{
FILESYSRESULT_SUCCESS = 0x0,
FILESYSRESULT_EOF = 0x1,
FILESYSRESULT_ERROR = 0x2,
};
struct DB_IFileSysFile
{
void* file;
uint64_t last_read;
uint64_t bytes_read;
};
static_assert(sizeof(DB_IFileSysFile) == 24);
struct DB_FileSysInterface;
// this is a best guess, interface doesn't match up exactly w/other games (IW8, T9)
struct DB_FileSysInterface_vtbl
{
DB_IFileSysFile* (__fastcall* OpenFile)(DB_FileSysInterface* _this, Sys_Folder folder, const char* filename);
FileSysResult(__fastcall* Read)(DB_FileSysInterface* _this, DB_IFileSysFile* handle, unsigned __int64 offset, unsigned __int64 size, void* dest);
FileSysResult(__fastcall* Tell)(DB_FileSysInterface* _this, DB_IFileSysFile* handle, unsigned __int64* bytesRead);
__int64(__fastcall* Size)(DB_FileSysInterface* _this, DB_IFileSysFile* handle);
void(__fastcall* Close)(DB_FileSysInterface* _this, DB_IFileSysFile* handle);
bool(__fastcall* Exists)(DB_FileSysInterface* _this, Sys_Folder folder, const char* filename);
};
struct DB_FileSysInterface
{
DB_FileSysInterface_vtbl* vftbl;
};
enum CodPlayMode
{
CODPLAYMODE_NONE = 0x0,

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@ -315,6 +315,8 @@ namespace game
WEAK symbol<void*> DB_XAssetPool{0xEC9FB0, 0x10B4460};
WEAK symbol<const char*> g_assetNames{0x991BA0, 0x10B30D0};
WEAK symbol< DB_FileSysInterface*> db_fs{0x25C1168, 0x1566C08};
WEAK symbol<int> keyCatchers{0x252AF70, 0x2EC82C4};
WEAK symbol<PlayerKeyState> playerKeys{0x2395B0C, 0x2999E1C};