/* 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; }