/* The main game loop */
GAMECODE gameLoop()
{
static uint32_t lastFlushTime = 0;
static int renderBudget = 0; // Scaled time spent rendering minus scaled time spent updating.
static bool previousUpdateWasRender = false;
const Rational renderFraction(2, 5); // Minimum fraction of time spent rendering.
const Rational updateFraction = Rational(1) - renderFraction;
countUpdate(false); // kick off with correct counts
while (true)
{
// Receive NET_BLAH messages.
// Receive GAME_BLAH messages, and if it's time, process exactly as many GAME_BLAH messages as required to be able to tick the gameTime.
recvMessage();
// Update gameTime and graphicsTime, and corresponding deltas. Note that gameTime and graphicsTime pause, if we aren't getting our GAME_GAME_TIME messages.
gameTimeUpdate(renderBudget > 0 || previousUpdateWasRender);
if (deltaGameTime == 0)
{
break; // Not doing a game state update.
}
ASSERT(!paused && !gameUpdatePaused(), "Nonsensical pause values.");
unsigned before = wzGetTicks();
syncDebug("Begin game state update, gameTime = %d", gameTime);
gameStateUpdate();
syncDebug("End game state update, gameTime = %d", gameTime);
unsigned after = wzGetTicks();
renderBudget -= (after - before) * renderFraction.n;
renderBudget = std::max(renderBudget, (-updateFraction * 500).floor());
previousUpdateWasRender = false;
ASSERT(deltaGraphicsTime == 0, "Shouldn't update graphics and game state at once.");
}
if (realTime - lastFlushTime >= 400u)
{
lastFlushTime = realTime;
NETflush(); // Make sure that we aren't waiting too long to send data.
}
unsigned before = wzGetTicks();
GAMECODE renderReturn = renderLoop();
unsigned after = wzGetTicks();
renderBudget += (after - before) * updateFraction.n;
renderBudget = std::min(renderBudget, (renderFraction * 500).floor());
previousUpdateWasRender = true;
return renderReturn;
}
/* The main game loop */
GAMECODE gameLoop(void)
{
static uint32_t lastFlushTime = 0;
bool didTick = false;
while (true)
{
// Receive NET_BLAH messages.
// Receive GAME_BLAH messages, and if it's time, process exactly as many GAME_BLAH messages as required to be able to tick the gameTime.
recvMessage();
// Update gameTime and graphicsTime, and corresponding deltas. Note that gameTime and graphicsTime pause, if we aren't getting our GAME_GAME_TIME messages.
gameTimeUpdate();
if (deltaGameTime == 0)
{
break; // Not doing a game state update.
}
didTick = true;
ASSERT(!paused && !gameUpdatePaused() && !editPaused(), "Nonsensical pause values.");
syncDebug("Begin game state update, gameTime = %d", gameTime);
gameStateUpdate();
syncDebug("End game state update, gameTime = %d", gameTime);
ASSERT(deltaGraphicsTime == 0, "Shouldn't update graphics and game state at once.");
}
if (didTick || realTime - lastFlushTime < 400u)
{
lastFlushTime = realTime;
NETflush(); // Make sure the game time tick message is really sent over the network, and that we aren't waiting too long to send data.
}
return renderLoop();
}
static GAMECODE renderLoop()
{
if (bMultiPlayer && !NetPlay.isHostAlive && NetPlay.bComms && !NetPlay.isHost)
{
intAddInGamePopup();
}
int clearMode = 0;
if(getDrawShadows())
{
clearMode |= CLEAR_SHADOW;
}
if (loopMissionState == LMS_SAVECONTINUE)
{
pie_SetFogStatus(false);
clearMode = CLEAR_BLACK;
}
pie_ScreenFlip(clearMode);//gameloopflip
HandleClosingWindows(); // Needs to be done outside the pause case.
audio_Update();
wzShowMouse(true);
INT_RETVAL intRetVal = INT_NONE;
if (!paused)
{
/* Run the in game interface and see if it grabbed any mouse clicks */
if (!rotActive && getWidgetsStatus() && dragBox3D.status != DRAG_DRAGGING && wallDrag.status != DRAG_DRAGGING)
{
intRetVal = intRunWidgets();
}
//don't process the object lists if paused or about to quit to the front end
if (!gameUpdatePaused() && intRetVal != INT_QUIT)
{
if( dragBox3D.status != DRAG_DRAGGING
&& wallDrag.status != DRAG_DRAGGING
&& ( intRetVal == INT_INTERCEPT
|| ( radarOnScreen
&& CoordInRadar(mouseX(), mouseY())
&& getHQExists(selectedPlayer) ) ) )
{
// Using software cursors (when on) for these menus due to a bug in SDL's SDL_ShowCursor()
wzSetCursor(CURSOR_DEFAULT);
intRetVal = INT_INTERCEPT;
}
#ifdef DEBUG
// check all flag positions for duplicate delivery points
checkFactoryFlags();
#endif
//handles callbacks for positioning of DP's
process3DBuilding();
//ajl. get the incoming netgame messages and process them.
// FIXME Previous comment is deprecated. multiPlayerLoop does some other weird stuff, but not that anymore.
if (bMultiPlayer)
{
multiPlayerLoop();
}
for (unsigned i = 0; i < MAX_PLAYERS; i++)
{
for (DROID *psCurr = apsDroidLists[i]; psCurr; psCurr = psCurr->psNext)
{
// Don't copy the next pointer - if droids somehow get destroyed in the graphics rendering loop, who cares if we crash.
calcDroidIllumination(psCurr);
}
}
/* update animations */
animObj_Update();
}
if (!consolePaused())
{
/* Process all the console messages */
updateConsoleMessages();
}
if (!scrollPaused() && !getWarCamStatus() && dragBox3D.status != DRAG_DRAGGING && intMode != INT_INGAMEOP )
{
scroll();
}
}
else // paused
{
// Using software cursors (when on) for these menus due to a bug in SDL's SDL_ShowCursor()
wzSetCursor(CURSOR_DEFAULT);
if(dragBox3D.status != DRAG_DRAGGING)
{
scroll();
}
if(InGameOpUp || isInGamePopupUp) // ingame options menu up, run it!
{
unsigned widgval = widgRunScreen(psWScreen);
intProcessInGameOptions(widgval);
if(widgval == INTINGAMEOP_QUIT_CONFIRM || widgval == INTINGAMEOP_POPUP_QUIT)
{
if(gamePaused())
{
kf_TogglePauseMode();
}
intRetVal = INT_QUIT;
}
}
if(bLoadSaveUp && runLoadSave(true) && strlen(sRequestResult))
{
debug( LOG_NEVER, "Returned %s", sRequestResult );
if(bRequestLoad)
{
loopMissionState = LMS_LOADGAME;
NET_InitPlayers(); // otherwise alliances were not cleared
sstrcpy(saveGameName, sRequestResult);
}
else
{
char msgbuffer[256]= {'\0'};
if (saveInMissionRes())
{
if (saveGame(sRequestResult, GTYPE_SAVE_START))
{
sstrcpy(msgbuffer, _("GAME SAVED: "));
sstrcat(msgbuffer, sRequestResult);
addConsoleMessage( msgbuffer, LEFT_JUSTIFY, NOTIFY_MESSAGE);
}
else
{
ASSERT( false,"Mission Results: saveGame Failed" );
sstrcpy(msgbuffer, _("Could not save game!"));
addConsoleMessage( msgbuffer, LEFT_JUSTIFY, NOTIFY_MESSAGE);
deleteSaveGame(sRequestResult);
}
}
else if (bMultiPlayer || saveMidMission())
{
if (saveGame(sRequestResult, GTYPE_SAVE_MIDMISSION))//mid mission from [esc] menu
{
sstrcpy(msgbuffer, _("GAME SAVED: "));
sstrcat(msgbuffer, sRequestResult);
addConsoleMessage( msgbuffer, LEFT_JUSTIFY, NOTIFY_MESSAGE);
}
else
{
ASSERT(!"saveGame(sRequestResult, GTYPE_SAVE_MIDMISSION) failed", "Mid Mission: saveGame Failed" );
sstrcpy(msgbuffer, _("Could not save game!"));
addConsoleMessage( msgbuffer, LEFT_JUSTIFY, NOTIFY_MESSAGE);
deleteSaveGame(sRequestResult);
}
}
else
{
ASSERT( false, "Attempt to save game with incorrect load/save mode" );
}
}
}
}
/* Check for quit */
bool quitting = false;
if (intRetVal == INT_QUIT)
{
if (!loop_GetVideoStatus())
{
//quitting from the game to the front end
//so get a new backdrop
quitting = true;
pie_LoadBackDrop(SCREEN_RANDOMBDROP);
}
}
if (!loop_GetVideoStatus() && !quitting)
{
if (!gameUpdatePaused())
{
if (dragBox3D.status != DRAG_DRAGGING
&& wallDrag.status != DRAG_DRAGGING)
{
ProcessRadarInput();
}
processInput();
//no key clicks or in Intelligence Screen
if (intRetVal == INT_NONE && !InGameOpUp && !isInGamePopupUp)
{
processMouseClickInput();
}
displayWorld();
}
/* Display the in game interface */
pie_SetDepthBufferStatus(DEPTH_CMP_ALWAYS_WRT_ON);
pie_SetFogStatus(false);
if(bMultiPlayer && bDisplayMultiJoiningStatus)
{
intDisplayMultiJoiningStatus(bDisplayMultiJoiningStatus);
setWidgetsStatus(false);
}
if(getWidgetsStatus())
{
intDisplayWidgets();
}
pie_SetDepthBufferStatus(DEPTH_CMP_LEQ_WRT_ON);
pie_SetFogStatus(true);
}
pie_GetResetCounts(&loopPieCount, &loopPolyCount, &loopStateChanges);
if ((fogStatus & FOG_BACKGROUND) && (loopMissionState == LMS_SAVECONTINUE))
{
pie_SetFogStatus(false);
}
if (!quitting)
{
/* Check for toggling display mode */
if ((keyDown(KEY_LALT) || keyDown(KEY_RALT)) && keyPressed(KEY_RETURN))
{
screenToggleMode();
}
}
// deal with the mission state
switch (loopMissionState)
{
case LMS_CLEAROBJECTS:
missionDestroyObjects();
setScriptPause(true);
loopMissionState = LMS_SETUPMISSION;
break;
case LMS_NORMAL:
// default
break;
case LMS_SETUPMISSION:
setScriptPause(false);
if (!setUpMission(nextMissionType))
{
return GAMECODE_QUITGAME;
}
break;
case LMS_SAVECONTINUE:
// just wait for this to be changed when the new mission starts
break;
case LMS_NEWLEVEL:
//nextMissionType = MISSION_NONE;
nextMissionType = LDS_NONE;
return GAMECODE_NEWLEVEL;
break;
case LMS_LOADGAME:
return GAMECODE_LOADGAME;
break;
default:
ASSERT( false, "unknown loopMissionState" );
break;
}
if (quitting)
{
pie_SetFogStatus(false);
pie_ScreenFlip(CLEAR_BLACK);//gameloopflip
/* Check for toggling display mode */
if ((keyDown(KEY_LALT) || keyDown(KEY_RALT)) && keyPressed(KEY_RETURN))
{
screenToggleMode();
}
return GAMECODE_QUITGAME;
}
else if (loop_GetVideoStatus())
{
audio_StopAll();
return GAMECODE_PLAYVIDEO;
}
return GAMECODE_CONTINUE;
}
