fixed bug with uninitialized structure usage

changed resources layout
added unlimited zoom patch
working around rendering process

CMakeLists.txt

@@ -120,6 +120,8 @@ set(SOURCES
         patches/hires_textures/redirect_load_cached_textures.cpp
         patches/hires_textures/upscale_texture_buffer.cpp
         patches/hires_textures/expand_size_hash_table.cpp
+        patches/fix_usage_unitialized_structure.cpp
+        patches/unlimited_zoom_hack.cpp
         reimpl/SurfHashList__probablySort.cpp
         reimpl/draw3dScene.cpp
         tools/unpack_texture_cache.cpp
@@ -145,7 +147,7 @@ target_include_directories(bootstrap_patcher PRIVATE include)
 target_link_libraries(bootstrap_patcher PRIVATE Dbghelp Shcore Comctl32 win32_gui_layout)
 target_compile_definitions(bootstrap_patcher PRIVATE DIRECTINPUT_VERSION=0x0500 DIRECT3D_VERSION=0x0600)
 
-add_subdirectory(vendor)
+add_subdirectory(3rdparty)
 target_link_libraries(bootstrap_patcher PRIVATE lodepng)
 
 set_target_properties(bootstrap_patcher PROPERTIES RUNTIME_OUTPUT_DIRECTORY "${BIN_DIR}")

README.md

@@ -17,6 +17,17 @@ As dll has `export table`, you can generate lib file with Visual Studio tool `li
 I've collected all the `esp register modification instruction locations`, so you can walk the stack based on this mapping(`mappings/stack.map`).
 - Launcher with gui. (Planned for the future) users can enable/disable/configure patches in launcher
 
+Usage:
+- Download zip archive from [releases](https://github.com/DiaLight/Ember/releases/latest) 
+- Unpack wherever you like. Consider it a separate program with its own folder
+- Run `launcher.exe`
+- First you need to find the `Dungeon Keeper 2` directory using launcher. The program looks for the `DKII.exe` file and determines its version. Currently only version `1.70` is supported.
+- Then you can configure resolution, etc
+- Start the game with the big `start` button
+
+The program does not modify existing game files.
+For a complete removal, you must remove launcher's and `Dungeon Keeper 2\resources` directories and remove `HKEY_CURRENT_USER\SOFTWARE\Ember Launcher` registry key
+
 Requirements:
 - Python 3
 - Visual Studio 2022

api/patch.cpp

@@ -20,18 +20,20 @@ void PatchBuilder::writeAsm(void (*asmFun)()) {
   write(pos, size);
 }
 
-void write_jump(uint8_t *pos, void *to) {
+void write_jump(uint8_t *pos, void *to, size_t orig_size) {
   DWORD oldProtect;
   VirtualProtect(pos, 5, PAGE_EXECUTE_READWRITE, &oldProtect);
   pos[0] = 0xE9;
   *((uint32_t *) (pos + 1)) = (uint8_t *) to - (pos + 5);
+  for (int i = 5; i < orig_size; ++i) pos[i] = 0x90;
   VirtualProtect(pos, 5, oldProtect, NULL);
 }
-void write_call(uint8_t *pos, void *to) {
+void write_call(uint8_t *pos, void *to, size_t orig_size) {
   DWORD oldProtect;
   VirtualProtect(pos, 5, PAGE_EXECUTE_READWRITE, &oldProtect);
   pos[0] = 0xE8;
   *((uint32_t *) (pos + 1)) = (uint8_t *) to - (pos + 5);
+  for (int i = 5; i < orig_size; ++i) pos[i] = 0x90;
   VirtualProtect(pos, 5, oldProtect, NULL);
 }
 
@@ -172,7 +174,7 @@ HookHandle *HookHandle::_create(uint8_t *orig_addr, size_t orig_size, size_t rel
   }
 
   // jump proxy
-  write_jump(orig_addr, handle->code);
+  write_jump(orig_addr, handle->code, orig_size);
   return handle;
 }
 HookHandle *HookHandle::create(uint8_t *orig_addr, size_t orig_size, size_t reloc_offs) {

include/api/patch.h

@@ -8,8 +8,8 @@
 #include <vector>
 #include <functional>
 
-void write_jump(uint8_t *pos, void *to);
-void write_call(uint8_t *pos, void *to);
+void write_jump(uint8_t *pos, void *to, size_t orig_size = 0);
+void write_call(uint8_t *pos, void *to, size_t orig_size = 0);
 
 class PatchBuilder {
   std::vector<uint8_t> proxy;