/* * Frame.c * * Initialisation and shutdown for the framework library. * * Includes a basic windows message loop. * */ // defines the inline functions in this module #define DEFINE_INLINE #include #include #include #include #include // window focus messages //#define DEBUG_GROUP1 #include "frame.h" #include "frameint.h" #include "frameresource.h" #include "input.h" #include "fractions.h" #include #ifdef __APPLE__ #include "cursors16.h" #else #include "cursors.h" #endif #include "SDL_framerate.h" #define IGNORE_FOCUS /* Linux specific stuff */ static FPSmanager wzFPSmanager; static UWORD currentCursorResID = UWORD_MAX; SDL_Cursor *aCursors[MAX_CURSORS]; typedef enum _focus_state { FOCUS_OUT, // Window does not have the focus FOCUS_SET, // Just received WM_SETFOCUS FOCUS_IN, // Window has got the focus FOCUS_KILL, // Just received WM_KILLFOCUS } FOCUS_STATE; FOCUS_STATE focusState, focusLast; /* Whether the mouse is currently being displayed or not */ static BOOL mouseOn=TRUE; /* Whether the mouse should be displayed in the app workspace */ static BOOL displayMouse=TRUE; /************************************************************************************ * * Alex's frame rate stuff */ /* Over how many seconds is the average required? */ #define TIMESPAN 5 /* Initial filler value for the averages - arbitrary */ #define IN_A_FRAME 70 /* Global variables for the frame rate stuff */ static Uint32 FrameCounts[TIMESPAN] = { 0 }; static Uint32 FrameIndex = 0; static Uint64 curFrames = 0; // Number of frames elapsed since start static Uint64 lastFrames = 0; static Uint32 curTicks = 0; // Number of ticks since execution started static Uint32 lastTicks = 0; /* InitFrameStuff - needs to be called once before frame loop commences */ static void InitFrameStuff( void ) { UDWORD i; for (i=0; i= lastTicks + 1000 ) { // TODO Would have to be normalized to be correct for < 1 fps: // FrameCounts[FrameIndex++] = 1000 * (curFrames - lastFrames) / (curTicks - lastTicks); FrameCounts[FrameIndex++] = curFrames - lastFrames; if ( FrameIndex >= TIMESPAN ) { FrameIndex = 0; } lastTicks = curTicks; lastFrames = curFrames; } } UDWORD frameGetAverageRate(void) { SDWORD averageFrames = 0, i = 0; for ( i = 0; i < TIMESPAN; i++ ) averageFrames += FrameCounts[i]; averageFrames /= TIMESPAN; return averageFrames; } UDWORD frameGetFrameNumber(void) { return curFrames; } /* If cursor on is TRUE the windows cursor will be displayed over the game window * (and in full screen mode). If it is FALSE the cursor will not be displayed. */ void frameShowCursor(BOOL cursorOn) { displayMouse = cursorOn; } /* Set the current cursor from a Resource ID */ void frameSetCursorFromRes(SWORD resID) { ASSERT( resID >= CURSOR_OFFSET, "frameSetCursorFromRes: bad resource ID" ); ASSERT( resID < CURSOR_OFFSET + MAX_CURSORS, "frameSetCursorFromRes: bad resource ID" ); //If we are already using this cursor then return if (resID != currentCursorResID) { SDL_SetCursor(aCursors[resID - CURSOR_OFFSET]); currentCursorResID = resID; } } /* * processEvent * * Event processing function */ static void processEvent(SDL_Event *event) { switch(event->type) { #ifndef IGNORE_FOCUS case SDL_ACTIVEEVENT: if (event->active.state == SDL_APPINPUTFOCUS || event->active.state == SDL_APPACTIVE) { if (event->active.gain == 1) { DBP1(("WM_SETFOCUS\n")); if (focusState != FOCUS_IN) { DBP1(("FOCUS_SET\n")); focusState = FOCUS_SET; } } else { DBP1(("WM_KILLFOCUS\n")); if (focusState != FOCUS_OUT) { DBP1(("FOCUS_KILL\n")); focusState = FOCUS_KILL; } /* Have to tell the input system that we've lost focus */ inputProcessEvent(event); } } break; #endif case SDL_KEYUP: case SDL_KEYDOWN: case SDL_MOUSEBUTTONUP: case SDL_MOUSEBUTTONDOWN: case SDL_MOUSEMOTION: inputProcessEvent(event); break; } } static void initCursors(void) { aCursors[CURSOR_ARROW - CURSOR_OFFSET] = init_system_cursor(cursor_arrow); aCursors[CURSOR_DEST - CURSOR_OFFSET] = init_system_cursor(cursor_dest); aCursors[CURSOR_SIGHT - CURSOR_OFFSET] = init_system_cursor(cursor_sight); aCursors[CURSOR_TARGET - CURSOR_OFFSET] = init_system_cursor(cursor_target); aCursors[CURSOR_LARROW - CURSOR_OFFSET] = init_system_cursor(cursor_larrow); aCursors[CURSOR_RARROW - CURSOR_OFFSET] = init_system_cursor(cursor_rarrow); aCursors[CURSOR_DARROW - CURSOR_OFFSET] = init_system_cursor(cursor_darrow); aCursors[CURSOR_UARROW - CURSOR_OFFSET] = init_system_cursor(cursor_uarrow); aCursors[CURSOR_DEFAULT - CURSOR_OFFSET] = init_system_cursor(cursor_default); aCursors[CURSOR_EDGEOFMAP - CURSOR_OFFSET] = init_system_cursor(cursor_default); aCursors[CURSOR_ATTACH - CURSOR_OFFSET] = init_system_cursor(cursor_attach); aCursors[CURSOR_ATTACK - CURSOR_OFFSET] = init_system_cursor(cursor_attack); aCursors[CURSOR_BOMB - CURSOR_OFFSET] = init_system_cursor(cursor_bomb); aCursors[CURSOR_BRIDGE - CURSOR_OFFSET] = init_system_cursor(cursor_bridge); aCursors[CURSOR_BUILD - CURSOR_OFFSET] = init_system_cursor(cursor_build); aCursors[CURSOR_EMBARK - CURSOR_OFFSET] = init_system_cursor(cursor_embark); aCursors[CURSOR_FIX - CURSOR_OFFSET] = init_system_cursor(cursor_fix); aCursors[CURSOR_GUARD - CURSOR_OFFSET] = init_system_cursor(cursor_guard); aCursors[CURSOR_JAM - CURSOR_OFFSET] = init_system_cursor(cursor_jam); aCursors[CURSOR_LOCKON - CURSOR_OFFSET] = init_system_cursor(cursor_lockon); aCursors[CURSOR_MENU - CURSOR_OFFSET] = init_system_cursor(cursor_menu); aCursors[CURSOR_MOVE - CURSOR_OFFSET] = init_system_cursor(cursor_move); aCursors[CURSOR_NOTPOSSIBLE - CURSOR_OFFSET] = init_system_cursor(cursor_notpossible); aCursors[CURSOR_PICKUP - CURSOR_OFFSET] = init_system_cursor(cursor_pickup); aCursors[CURSOR_SEEKREPAIR - CURSOR_OFFSET] = init_system_cursor(cursor_seekrepair); aCursors[CURSOR_SELECT - CURSOR_OFFSET] = init_system_cursor(cursor_select); } static void freeCursors(void) { unsigned int i = 0; for( ; i < MAX_CURSORS; i++ ) { SDL_FreeCursor( aCursors[i] ); } } /* * frameInitialise * * Initialise the framework library. - PC version */ BOOL frameInitialise( const char *pWindowName,// The text to appear in the window title bar UDWORD width, // The display width UDWORD height, // The display height UDWORD bitDepth, // The display bit depth BOOL fullScreen // Whether to start full screen or windowed ) { if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_CDROM) != 0) { debug( LOG_ERROR, "Error: Could not initialise SDL (%s).\n", SDL_GetError() ); return FALSE; } SDL_WM_SetCaption(pWindowName, NULL); focusState = FOCUS_IN; focusLast = FOCUS_IN; mouseOn = TRUE; displayMouse = TRUE; /* Initialise the trig stuff */ if (!trigInitialise()) { return FALSE; } /* initialise all cursors */ initCursors(); /* Initialise the Direct Draw Buffers */ if (!screenInitialise(width, height, bitDepth, fullScreen)) { return FALSE; } /* Initialise the input system */ inputInitialise(); /* Initialise the frame rate stuff */ InitFrameStuff(); SDL_initFramerate( &wzFPSmanager ); SDL_setFramerate( &wzFPSmanager, 60 ); // Initialise the resource stuff if (!resInitialise()) { return FALSE; } return TRUE; } /* * frameUpdate * * Call this each cycle to allow the framework to deal with * windows messages, and do general house keeping. * * Returns FRAME_STATUS. */ FRAME_STATUS frameUpdate(void) { SDL_Event event; FRAME_STATUS retVal; BOOL wzQuit = FALSE; /* Tell the input system about the start of another frame */ inputNewFrame(); /* Deal with any windows messages */ while ( SDL_PollEvent( &event ) != 0) { if (event.type == SDL_QUIT) wzQuit = TRUE; else processEvent(&event); } /* Now figure out what to return */ retVal = FRAME_OK; if (wzQuit) { retVal = FRAME_QUIT; } else if ((focusState == FOCUS_SET) && (focusLast == FOCUS_OUT)) { DBP1(("Returning SETFOCUS\n")); focusState = FOCUS_IN; retVal = FRAME_SETFOCUS; } else if ((focusState == FOCUS_KILL) && (focusLast == FOCUS_IN)) { DBP1(("Returning KILLFOCUS\n")); focusState = FOCUS_OUT; retVal = FRAME_KILLFOCUS; } if ((focusState == FOCUS_SET) || (focusState == FOCUS_KILL)) { /* Got a SET or KILL when we were already in or out of focus respectively */ focusState = focusLast; } else if (focusLast != focusState) { DBP1(("focusLast changing from %d to %d\n", focusLast, focusState)); focusLast = focusState; } /* If things are running normally update the framerate */ if ((!wzQuit) && (focusState == FOCUS_IN)) { /* Update the frame rate stuff */ MaintainFrameStuff(); SDL_framerateDelay( &wzFPSmanager ); } return retVal; } void frameShutDown(void) { screenShutDown(); /* Free the default cursor */ // DestroyCursor(hCursor); /* Free all cursors */ freeCursors(); /* Destroy the Application window */ SDL_Quit(); /* shutdown the trig stuff */ trigShutDown(); // Shutdown the resource stuff resShutDown(); // shutdown the block memory heap blkShutDown(); /* Shutdown the memory system */ memShutDown(); } /*************************************************************************** Load the file with name pointed to by pFileName into a memory buffer. If AllocateMem is true then the memory is allocated ... else it is already in allocated in ppFileData, and the max size is in pFileSize ... this is adjusted to the actual loaded file size. If hard_fail is true, we will assert and report on failures. ***************************************************************************/ static BOOL loadFile2(const char *pFileName, char **ppFileData, UDWORD *pFileSize, BOOL AllocateMem, BOOL hard_fail) { PHYSFS_file *pfile; PHYSFS_sint64 filesize; PHYSFS_sint64 length_read; pfile = PHYSFS_openRead(pFileName); if (!pfile) { debug(LOG_ERROR, "loadFile2: %s could not be opened: %s", pFileName, PHYSFS_getLastError()); if (hard_fail) assert(FALSE); return FALSE; } filesize = PHYSFS_fileLength(pfile); //debug(LOG_WZ, "loadFile2: %s opened, size %i", pFileName, filesize); if (AllocateMem == TRUE) { // Allocate a buffer to store the data and a terminating zero *ppFileData = (char*)MALLOC(filesize + 1); if (*ppFileData == NULL) { debug(LOG_ERROR, "loadFile2: Out of memory loading %s", pFileName); assert(FALSE); return FALSE; } } else { if (filesize > *pFileSize) { debug(LOG_ERROR, "loadFile2: No room for file %s", pFileName); assert(FALSE); return FALSE; } assert(*ppFileData != NULL); } /* Load the file data */ length_read = PHYSFS_read(pfile, *ppFileData, 1, filesize); if (length_read != filesize) { FREE( *ppFileData ); debug(LOG_ERROR, "loadFile2: Reading %s short: %s", pFileName, PHYSFS_getLastError()); assert(FALSE); return FALSE; } if (!PHYSFS_close(pfile)) { FREE( *ppFileData ); debug(LOG_ERROR, "loadFile2: Error closing %s: %s", pFileName, PHYSFS_getLastError()); assert(FALSE); return FALSE; } // Add the terminating zero *((*ppFileData) + filesize) = 0; // always set to correct size *pFileSize = filesize; return TRUE; } /*************************************************************************** Save the data in the buffer into the given file. ***************************************************************************/ BOOL saveFile(const char *pFileName, const char *pFileData, UDWORD fileSize) { PHYSFS_file *pfile; PHYSFS_uint32 size = fileSize; debug(LOG_WZ, "We are to write (%s) of size %d", pFileName, fileSize); pfile = PHYSFS_openWrite(pFileName); if (!pfile) { const char *found = PHYSFS_getRealDir(pFileName); debug(LOG_ERROR, "saveFile: %s could not be opened: %s", pFileName, PHYSFS_getLastError()); if (found) { debug(LOG_ERROR, "saveFile: %s found as %s", pFileName, found); } assert(FALSE); return FALSE; } if (PHYSFS_write(pfile, pFileData, 1, size) != size) { debug(LOG_ERROR, "saveFile: %s could not write: %s", pFileName, PHYSFS_getLastError()); assert(FALSE); return FALSE; } if (!PHYSFS_close(pfile)) { debug(LOG_ERROR, "saveFile: Error closing %s: %s", pFileName, PHYSFS_getLastError()); assert(FALSE); return FALSE; } if (PHYSFS_getRealDir(pFileName) == NULL) { // weird debug(LOG_ERROR, "saveFile: PHYSFS_getRealDir(%s) returns NULL?!", pFileName); } else { debug(LOG_WZ, "Successfully wrote to %s%s%s with %d bytes", PHYSFS_getRealDir(pFileName), PHYSFS_getDirSeparator(), pFileName, size); } return TRUE; } BOOL loadFile(const char *pFileName, char **ppFileData, UDWORD *pFileSize) { return loadFile2(pFileName, ppFileData, pFileSize, TRUE, TRUE); } // load a file from disk into a fixed memory buffer BOOL loadFileToBuffer(const char *pFileName, char *pFileBuffer, UDWORD bufferSize, UDWORD *pSize) { *pSize = bufferSize; return loadFile2(pFileName, &pFileBuffer, pSize, FALSE, TRUE); } // as above but returns quietly if no file found BOOL loadFileToBufferNoError(const char *pFileName, char *pFileBuffer, UDWORD bufferSize, UDWORD *pSize) { *pSize = bufferSize; return loadFile2(pFileName, &pFileBuffer, pSize, FALSE, FALSE); } /* next four used in HashPJW */ #define BITS_IN_int 32 #define THREE_QUARTERS ((UDWORD) ((BITS_IN_int * 3) / 4)) #define ONE_EIGHTH ((UDWORD) (BITS_IN_int / 8)) #define HIGH_BITS ( ~((UDWORD)(~0) >> ONE_EIGHTH )) //#define HIGH_BITS ((UDWORD)(0xf0000000)) //#define LOW_BITS ((UDWORD)(0x0fffffff)) /////////////////////////////////////////////////////////////////// /***************************************************************************/ /* * HashString * * Adaptation of Peter Weinberger's (PJW) generic hashing algorithm listed * in Binstock+Rex, "Practical Algorithms" p 69. * * Accepts string and returns hashed integer. */ /***************************************************************************/ UDWORD HashString( const char *c ) { UDWORD iHashValue, i; assert(c!=NULL); assert(*c!=0x0); for ( iHashValue=0; *c; ++c ) { iHashValue = ( iHashValue << ONE_EIGHTH ) + *c; if ( (i = iHashValue & HIGH_BITS) != 0 ) { iHashValue = ( iHashValue ^ ( i >> THREE_QUARTERS ) ) & ~HIGH_BITS; } } // printf("%%%%%%%% String:%s Hash:%0x\n",String,iHashValue); return iHashValue; } UDWORD HashStringIgnoreCase( const char *c ) { UDWORD iHashValue, i; assert(c!=NULL); assert(*c!=0x0); for ( iHashValue=0; *c; ++c ) { iHashValue = ( iHashValue << ONE_EIGHTH ) + ((*c)&(0xdf)); if ( (i = iHashValue & HIGH_BITS) != 0 ) { iHashValue = ( iHashValue ^ ( i >> THREE_QUARTERS ) ) & ~HIGH_BITS; } } // printf("%%%%%%%% (Ignorcase) String:%s Hash:%0x\n",String,iHashValue); return iHashValue; } // Examine a filename for the last dot and slash // and so giving the extension of the file and the directory // // PosOfDot and/of PosOfSlash can be NULL and then nothing will be stored // static void ScanFilename(const char *Fullname, int *PosOfDot, int *PosOfSlash) { int Namelength; int DotPos=-1; int SlashPos=-1; int Pos; Namelength=strlen(Fullname); for (Pos=Namelength;Pos>=0;Pos--) { if (Fullname[Pos]=='.') { DotPos=Pos; break; } } for (Pos=Namelength;Pos>=0;Pos--) { if (Fullname[Pos]=='/') { SlashPos=Pos; break; } } if (PosOfDot!=NULL) *PosOfDot=DotPos; if (PosOfSlash!=NULL) *PosOfSlash=SlashPos; }