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