optional hotpatch support
This commit is contained in:
FunkyFr3sh
parent
868a4479ba
commit
d42284c4bf
12 changed files with 361 additions and 161 deletions
167
src/mouse.c
167
src/mouse.c
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@ -14,27 +14,25 @@
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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/* This is a special mouse coordinate fix for games that use GetCursorPos and expect to be in fullscreen */
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#include <windows.h>
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#include <stdio.h>
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#include "main.h"
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#include "surface.h"
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#include "hook.h"
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BOOL mouse_active = FALSE;
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int yAdjust = 0;
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BOOL WINAPI fake_GetCursorPos(LPPOINT lpPoint)
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{
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POINT pt, realpt;
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if (!GetCursorPos(&pt) || !ddraw)
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if (!real_GetCursorPos(&pt) || !ddraw)
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return FALSE;
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realpt.x = pt.x;
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realpt.y = pt.y;
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if(ddraw->locked && (!ddraw->windowed || ScreenToClient(ddraw->hWnd, &pt)))
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if(ddraw->locked && (!ddraw->windowed || real_ScreenToClient(ddraw->hWnd, &pt)))
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{
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//fallback solution for possible ClipCursor failure
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int diffx = 0, diffy = 0;
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@ -66,7 +64,7 @@ BOOL WINAPI fake_GetCursorPos(LPPOINT lpPoint)
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}
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if (diffx || diffy)
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SetCursorPos(realpt.x - diffx, realpt.y - diffy);
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real_SetCursorPos(realpt.x - diffx, realpt.y - diffy);
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if(ddraw->adjmouse)
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@ -98,7 +96,7 @@ BOOL WINAPI fake_GetCursorPos(LPPOINT lpPoint)
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}
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if (diffx || diffy)
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SetCursorPos(realpt.x - diffx, realpt.y - diffy);
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real_SetCursorPos(realpt.x - diffx, realpt.y - diffy);
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}
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}
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@ -127,7 +125,7 @@ int WINAPI fake_ShowCursor(BOOL bShow)
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static int count;
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if (ddraw && !ddraw->handlemouse)
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return ShowCursor(bShow);
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return real_ShowCursor(bShow);
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return bShow ? ++count : --count;
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}
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@ -135,70 +133,11 @@ int WINAPI fake_ShowCursor(BOOL bShow)
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HCURSOR WINAPI fake_SetCursor(HCURSOR hCursor)
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{
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if (ddraw && !ddraw->handlemouse)
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return SetCursor(hCursor);
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return real_SetCursor(hCursor);
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return NULL;
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}
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void HookIAT(HMODULE hMod, char *moduleName, char *functionName, PROC newFunction)
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{
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if (!hMod || hMod == INVALID_HANDLE_VALUE || !newFunction)
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return;
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PIMAGE_DOS_HEADER pDosHeader = (PIMAGE_DOS_HEADER)hMod;
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if (pDosHeader->e_magic != IMAGE_DOS_SIGNATURE)
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return;
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PIMAGE_NT_HEADERS pNTHeaders = (PIMAGE_NT_HEADERS)((DWORD)pDosHeader + (DWORD)pDosHeader->e_lfanew);
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if (pNTHeaders->Signature != IMAGE_NT_SIGNATURE)
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return;
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PIMAGE_IMPORT_DESCRIPTOR pImportDescriptor = (PIMAGE_IMPORT_DESCRIPTOR)((DWORD)pDosHeader +
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(DWORD)(pNTHeaders->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_IMPORT].VirtualAddress));
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if (pImportDescriptor == (PIMAGE_IMPORT_DESCRIPTOR)pNTHeaders)
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return;
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while (pImportDescriptor->FirstThunk)
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{
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char *impModuleName = (char *)((DWORD)pDosHeader + (DWORD)(pImportDescriptor->Name));
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if (_stricmp(impModuleName, moduleName) == 0)
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{
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PIMAGE_THUNK_DATA pFirstThunk =
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(PIMAGE_THUNK_DATA)((DWORD)pDosHeader + (DWORD)pImportDescriptor->FirstThunk);
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PIMAGE_THUNK_DATA pOrigFirstThunk =
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(PIMAGE_THUNK_DATA)((DWORD)pDosHeader + (DWORD)pImportDescriptor->OriginalFirstThunk);
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while (pFirstThunk->u1.Function && pOrigFirstThunk->u1.AddressOfData)
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{
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PIMAGE_IMPORT_BY_NAME pImport =
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(PIMAGE_IMPORT_BY_NAME)((DWORD)pDosHeader + pOrigFirstThunk->u1.AddressOfData);
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if ((pOrigFirstThunk->u1.Ordinal & IMAGE_ORDINAL_FLAG) == 0 &&
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_stricmp((const char *)pImport->Name, functionName) == 0)
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{
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DWORD oldProtect;
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if (VirtualProtect(&pFirstThunk->u1.Function, sizeof(DWORD), PAGE_READWRITE, &oldProtect))
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{
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pFirstThunk->u1.Function = (DWORD)newFunction;
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VirtualProtect(&pFirstThunk->u1.Function, sizeof(DWORD), oldProtect, &oldProtect);
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}
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break;
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}
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pFirstThunk++;
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pOrigFirstThunk++;
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}
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}
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pImportDescriptor++;
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}
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}
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void mouse_lock()
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{
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RECT rc;
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@ -206,15 +145,15 @@ void mouse_lock()
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if (ddraw->devmode)
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{
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if (ddraw->handlemouse)
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while(ShowCursor(FALSE) > 0);
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while(real_ShowCursor(FALSE) > 0);
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return;
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}
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if (mouse_active && !ddraw->locked)
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if (Hook_Active && !ddraw->locked)
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{
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// Get the window client area.
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GetClientRect(ddraw->hWnd, &rc);
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real_GetClientRect(ddraw->hWnd, &rc);
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if(ddraw->adjmouse)
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{
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@ -230,8 +169,8 @@ void mouse_lock()
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// Convert the client area to screen coordinates.
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POINT pt = { rc.left, rc.top };
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POINT pt2 = { rc.right, rc.bottom };
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ClientToScreen(ddraw->hWnd, &pt);
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ClientToScreen(ddraw->hWnd, &pt2);
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real_ClientToScreen(ddraw->hWnd, &pt);
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real_ClientToScreen(ddraw->hWnd, &pt2);
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SetRect(&rc, pt.x, pt.y, pt2.x, pt2.y);
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@ -239,29 +178,29 @@ void mouse_lock()
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if(ddraw->adjmouse)
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{
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SetCursorPos(
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real_SetCursorPos(
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rc.left + (ddraw->cursor.x * ddraw->render.scaleW),
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rc.top + ((ddraw->cursor.y - yAdjust) * ddraw->render.scaleH));
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}
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else
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{
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SetCursorPos(rc.left + ddraw->cursor.x, rc.top + ddraw->cursor.y - yAdjust);
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real_SetCursorPos(rc.left + ddraw->cursor.x, rc.top + ddraw->cursor.y - yAdjust);
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}
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if (ddraw->handlemouse)
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{
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//SetCapture(ddraw->hWnd);
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ClipCursor(&rc);
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while (ShowCursor(FALSE) > 0);
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real_ClipCursor(&rc);
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while (real_ShowCursor(FALSE) > 0);
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}
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else
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{
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if (ddraw->hidecursor)
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{
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ddraw->hidecursor = FALSE;
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ShowCursor(FALSE);
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real_ShowCursor(FALSE);
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}
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ClipCursor(&rc);
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real_ClipCursor(&rc);
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}
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ddraw->locked = TRUE;
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@ -275,12 +214,12 @@ void mouse_unlock()
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if (ddraw->devmode)
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{
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if (ddraw->handlemouse)
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while(ShowCursor(TRUE) < 0);
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while(real_ShowCursor(TRUE) < 0);
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return;
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}
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if(!mouse_active)
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if(!Hook_Active)
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{
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return;
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}
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@ -290,34 +229,34 @@ void mouse_unlock()
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ddraw->locked = FALSE;
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// Get the window client area.
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GetClientRect(ddraw->hWnd, &rc);
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real_GetClientRect(ddraw->hWnd, &rc);
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// Convert the client area to screen coordinates.
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POINT pt = { rc.left, rc.top };
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POINT pt2 = { rc.right, rc.bottom };
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ClientToScreen(ddraw->hWnd, &pt);
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ClientToScreen(ddraw->hWnd, &pt2);
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real_ClientToScreen(ddraw->hWnd, &pt);
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real_ClientToScreen(ddraw->hWnd, &pt2);
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SetRect(&rc, pt.x, pt.y, pt2.x, pt2.y);
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if (ddraw->handlemouse)
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{
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while (ShowCursor(TRUE) < 0);
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SetCursor(LoadCursor(NULL, IDC_ARROW));
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while (real_ShowCursor(TRUE) < 0);
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real_SetCursor(LoadCursor(NULL, IDC_ARROW));
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}
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else
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{
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CURSORINFO ci = { .cbSize = sizeof(CURSORINFO) };
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if (GetCursorInfo(&ci) && ci.flags == 0)
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if (real_GetCursorInfo(&ci) && ci.flags == 0)
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{
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ddraw->hidecursor = TRUE;
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while (ShowCursor(TRUE) < 0);
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while (real_ShowCursor(TRUE) < 0);
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}
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}
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ClipCursor(NULL);
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real_ClipCursor(NULL);
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//ReleaseCapture();
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SetCursorPos(
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real_SetCursorPos(
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rc.left + ddraw->render.viewport.x + (ddraw->cursor.x * ddraw->render.scaleW),
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rc.top + ddraw->render.viewport.y + ((ddraw->cursor.y + yAdjust) * ddraw->render.scaleH));
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}
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@ -338,11 +277,11 @@ BOOL WINAPI fake_GetWindowRect(HWND hWnd, LPRECT lpRect)
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}
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else
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{
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return GetWindowRect(hWnd, lpRect) && MapWindowPoints(HWND_DESKTOP, ddraw->hWnd, (LPPOINT)lpRect, 2);
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return real_GetWindowRect(hWnd, lpRect) && MapWindowPoints(HWND_DESKTOP, ddraw->hWnd, (LPPOINT)lpRect, 2);
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}
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}
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return GetWindowRect(hWnd, lpRect);
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return real_GetWindowRect(hWnd, lpRect);
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}
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BOOL WINAPI fake_GetClientRect(HWND hWnd, LPRECT lpRect)
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@ -357,13 +296,13 @@ BOOL WINAPI fake_GetClientRect(HWND hWnd, LPRECT lpRect)
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return TRUE;
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}
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return GetClientRect(hWnd, lpRect);
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return real_GetClientRect(hWnd, lpRect);
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}
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BOOL WINAPI fake_ClientToScreen(HWND hWnd, LPPOINT lpPoint)
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{
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if (ddraw && ddraw->hWnd != hWnd)
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return ClientToScreen(hWnd, lpPoint) && ScreenToClient(ddraw->hWnd, lpPoint);
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return real_ClientToScreen(hWnd, lpPoint) && real_ScreenToClient(ddraw->hWnd, lpPoint);
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return TRUE;
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}
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@ -371,7 +310,7 @@ BOOL WINAPI fake_ClientToScreen(HWND hWnd, LPPOINT lpPoint)
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BOOL WINAPI fake_ScreenToClient(HWND hWnd, LPPOINT lpPoint)
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{
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if (ddraw && ddraw->hWnd != hWnd)
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return ClientToScreen(ddraw->hWnd, lpPoint) && ScreenToClient(hWnd, lpPoint);
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return real_ClientToScreen(ddraw->hWnd, lpPoint) && real_ScreenToClient(hWnd, lpPoint);
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return TRUE;
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}
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@ -379,13 +318,13 @@ BOOL WINAPI fake_ScreenToClient(HWND hWnd, LPPOINT lpPoint)
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BOOL WINAPI fake_SetCursorPos(int X, int Y)
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{
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POINT pt = { X, Y };
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return ddraw && ClientToScreen(ddraw->hWnd, &pt) && SetCursorPos(pt.x, pt.y);
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return ddraw && real_ClientToScreen(ddraw->hWnd, &pt) && real_SetCursorPos(pt.x, pt.y);
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}
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HWND WINAPI fake_WindowFromPoint(POINT Point)
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{
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POINT pt = { Point.x, Point.y };
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return ddraw && ClientToScreen(ddraw->hWnd, &pt) ? WindowFromPoint(pt) : NULL;
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return ddraw && real_ClientToScreen(ddraw->hWnd, &pt) ? real_WindowFromPoint(pt) : NULL;
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}
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BOOL WINAPI fake_GetClipCursor(LPRECT lpRect)
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@ -405,7 +344,7 @@ BOOL WINAPI fake_GetClipCursor(LPRECT lpRect)
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BOOL WINAPI fake_GetCursorInfo(PCURSORINFO pci)
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{
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return pci && ddraw && GetCursorInfo(pci) && ScreenToClient(ddraw->hWnd, &pci->ptScreenPos);
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return pci && ddraw && real_GetCursorInfo(pci) && real_ScreenToClient(ddraw->hWnd, &pci->ptScreenPos);
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}
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int WINAPI fake_GetSystemMetrics(int nIndex)
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@ -419,7 +358,7 @@ int WINAPI fake_GetSystemMetrics(int nIndex)
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return ddraw->height;
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}
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return GetSystemMetrics(nIndex);
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return real_GetSystemMetrics(nIndex);
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}
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BOOL WINAPI fake_SetWindowPos(HWND hWnd, HWND hWndInsertAfter, int X, int Y, int cx, int cy, UINT uFlags)
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@ -427,7 +366,7 @@ BOOL WINAPI fake_SetWindowPos(HWND hWnd, HWND hWndInsertAfter, int X, int Y, int
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if (ddraw && ddraw->hWnd == hWnd)
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return TRUE;
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return SetWindowPos(hWnd, hWndInsertAfter, X, Y, cx, cy, uFlags);
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return real_SetWindowPos(hWnd, hWndInsertAfter, X, Y, cx, cy, uFlags);
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}
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BOOL WINAPI fake_MoveWindow(HWND hWnd, int X, int Y, int nWidth, int nHeight, BOOL bRepaint)
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@ -435,12 +374,12 @@ BOOL WINAPI fake_MoveWindow(HWND hWnd, int X, int Y, int nWidth, int nHeight, BO
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if (ddraw && ddraw->hWnd == hWnd)
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return TRUE;
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return MoveWindow(hWnd, X, Y, nWidth, nHeight, bRepaint);
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return real_MoveWindow(hWnd, X, Y, nWidth, nHeight, bRepaint);
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}
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LRESULT WINAPI fake_SendMessageA(HWND hWnd, UINT Msg, WPARAM wParam, LPARAM lParam)
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{
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LRESULT result = SendMessageA(hWnd, Msg, wParam, lParam);
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LRESULT result = real_SendMessageA(hWnd, Msg, wParam, lParam);
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if (result && ddraw && Msg == CB_GETDROPPEDCONTROLRECT)
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{
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@ -457,27 +396,5 @@ LONG WINAPI fake_SetWindowLongA(HWND hWnd, int nIndex, LONG dwNewLong)
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if (ddraw && ddraw->hWnd == hWnd && nIndex == GWL_STYLE)
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return 0;
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return SetWindowLongA(hWnd, nIndex, dwNewLong);
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}
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void mouse_init()
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{
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HookIAT(GetModuleHandle(NULL), "user32.dll", "GetCursorPos", (PROC)fake_GetCursorPos);
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HookIAT(GetModuleHandle(NULL), "user32.dll", "ClipCursor", (PROC)fake_ClipCursor);
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HookIAT(GetModuleHandle(NULL), "user32.dll", "ShowCursor", (PROC)fake_ShowCursor);
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HookIAT(GetModuleHandle(NULL), "user32.dll", "SetCursor", (PROC)fake_SetCursor);
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HookIAT(GetModuleHandle(NULL), "user32.dll", "GetWindowRect", (PROC)fake_GetWindowRect);
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HookIAT(GetModuleHandle(NULL), "user32.dll", "GetClientRect", (PROC)fake_GetClientRect);
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HookIAT(GetModuleHandle(NULL), "user32.dll", "ClientToScreen", (PROC)fake_ClientToScreen);
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HookIAT(GetModuleHandle(NULL), "user32.dll", "ScreenToClient", (PROC)fake_ScreenToClient);
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HookIAT(GetModuleHandle(NULL), "user32.dll", "SetCursorPos", (PROC)fake_SetCursorPos);
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HookIAT(GetModuleHandle(NULL), "user32.dll", "GetClipCursor", (PROC)fake_GetClipCursor);
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HookIAT(GetModuleHandle(NULL), "user32.dll", "WindowFromPoint", (PROC)fake_WindowFromPoint);
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HookIAT(GetModuleHandle(NULL), "user32.dll", "GetCursorInfo", (PROC)fake_GetCursorInfo);
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HookIAT(GetModuleHandle(NULL), "user32.dll", "GetSystemMetrics", (PROC)fake_GetSystemMetrics);
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HookIAT(GetModuleHandle(NULL), "user32.dll", "SetWindowPos", (PROC)fake_SetWindowPos);
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HookIAT(GetModuleHandle(NULL), "user32.dll", "MoveWindow", (PROC)fake_MoveWindow);
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HookIAT(GetModuleHandle(NULL), "user32.dll", "SendMessageA", (PROC)fake_SendMessageA);
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HookIAT(GetModuleHandle(NULL), "user32.dll", "SetWindowLongA", (PROC)fake_SetWindowLongA);
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mouse_active = TRUE;
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return real_SetWindowLongA(hWnd, nIndex, dwNewLong);
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}
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