Initial commit

engines/sludge/freeze.cpp

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+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "sludge/cursors.h"
+#include "sludge/event.h"
+#include "sludge/graphics.h"
+#include "sludge/freeze.h"
+#include "sludge/newfatal.h"
+#include "sludge/people.h"
+#include "sludge/region.h"
+#include "sludge/sludge.h"
+#include "sludge/sludger.h"
+#include "sludge/speech.h"
+#include "sludge/statusba.h"
+#include "sludge/zbuffer.h"
+
+namespace Sludge {
+
+void GraphicsManager::freezeGraphics() {
+
+	int w = _winWidth;
+	int h = _winHeight;
+
+	_freezeSurface.create(w, h, *g_sludge->getScreenPixelFormat());
+
+	displayBase();
+	_freezeSurface.copyFrom(_renderSurface);
+}
+
+bool GraphicsManager::freeze() {
+	FrozenStuffStruct *newFreezer = new FrozenStuffStruct;
+	if (!checkNew(newFreezer))
+		return false;
+
+	// Grab a copy of the current scene
+	freezeGraphics();
+	newFreezer->backdropSurface.copyFrom(_backdropSurface);
+	newFreezer->sceneWidth = _sceneWidth;
+	newFreezer->sceneHeight = _sceneHeight;
+	newFreezer->cameraX = _cameraX;
+	newFreezer->cameraY = _cameraY;
+	newFreezer->cameraZoom = _cameraZoom;
+
+	newFreezer->lightMapSurface.copyFrom(_lightMap);
+	newFreezer->lightMapNumber = _lightMapNumber;
+
+	newFreezer->parallaxLayers = _parallaxLayers;
+	_parallaxLayers = NULL;
+
+	newFreezer->zBufferTex = _zBuffer->tex;
+	newFreezer->zBufferNumber = _zBuffer->originalNum;
+	newFreezer->zPanels = _zBuffer->numPanels;
+	_zBuffer->tex = NULL;
+	// resizeBackdrop kills parallax stuff, light map, z-buffer...
+	if (!killResizeBackdrop(_winWidth, _winHeight))
+		return fatal("Can't create new temporary backdrop buffer");
+
+	// Copy the old scene to the new backdrop
+	_backdropSurface.copyFrom(_freezeSurface);
+	_backdropExists = true;
+
+	_vm->_peopleMan->freeze(newFreezer);
+
+	StatusStuff *newStatusStuff = new StatusStuff;
+	if (!checkNew(newStatusStuff))
+		return false;
+	newFreezer->frozenStatus = _vm->_statusBar->copyStatusBarStuff(newStatusStuff);
+
+	_vm->_regionMan->freeze(newFreezer);
+	_vm->_cursorMan->freeze(newFreezer);
+	_vm->_speechMan->freeze(newFreezer);
+	_vm->_evtMan->freeze(newFreezer);
+
+	newFreezer->next = _frozenStuff;
+	_frozenStuff = newFreezer;
+
+	return true;
+}
+
+int GraphicsManager::howFrozen() {
+	int a = 0;
+	FrozenStuffStruct *f = _frozenStuff;
+	while (f) {
+		a++;
+		f = f->next;
+	}
+	return a;
+}
+
+void GraphicsManager::unfreeze(bool killImage) {
+	FrozenStuffStruct *killMe = _frozenStuff;
+
+	if (!_frozenStuff)
+		return;
+
+	_sceneWidth = _frozenStuff->sceneWidth;
+	_sceneHeight = _frozenStuff->sceneHeight;
+
+	_cameraX = _frozenStuff->cameraX;
+	_cameraY = _frozenStuff->cameraY;
+	_vm->_evtMan->mouseX() = (int)(_vm->_evtMan->mouseX() * _cameraZoom);
+	_vm->_evtMan->mouseY() = (int)(_vm->_evtMan->mouseY() * _cameraZoom);
+	_cameraZoom = _frozenStuff->cameraZoom;
+	_vm->_evtMan->mouseX() = (int)(_vm->_evtMan->mouseX() / _cameraZoom);
+	_vm->_evtMan->mouseY() = (int)(_vm->_evtMan->mouseY() / _cameraZoom);
+
+	g_sludge->_peopleMan->resotre(_frozenStuff);
+	g_sludge->_regionMan->resotre(_frozenStuff);
+
+	killLightMap();
+
+	_lightMap.copyFrom(_frozenStuff->lightMapSurface);
+	_lightMapNumber = _frozenStuff->lightMapNumber;
+	if (_lightMapNumber) {
+		loadLightMap(_lightMapNumber);
+	}
+
+	if (killImage)
+		killBackDrop();
+	_backdropSurface.copyFrom(_frozenStuff->backdropSurface);
+	_backdropExists = true;
+
+	_zBuffer->tex = _frozenStuff->zBufferTex;
+	killZBuffer();
+	_zBuffer->originalNum = _frozenStuff->zBufferNumber;
+	_zBuffer->numPanels = _frozenStuff->zPanels;
+	if (_zBuffer->numPanels) {
+		setZBuffer(_zBuffer->originalNum);
+	}
+
+	killParallax();
+	_parallaxLayers = _frozenStuff->parallaxLayers;
+
+	_vm->_cursorMan->resotre(_frozenStuff);
+	_vm->_statusBar->restoreBarStuff(_frozenStuff->frozenStatus);
+	_vm->_evtMan->restore(_frozenStuff);
+	_vm->_speechMan->restore(_frozenStuff);
+
+	_frozenStuff = _frozenStuff->next;
+
+	// free current frozen screen struct
+	if (killMe->backdropSurface.getPixels())
+		killMe->backdropSurface.free();
+	if (killMe->lightMapSurface.getPixels())
+		killMe->lightMapSurface.free();
+	delete killMe;
+	killMe = NULL;
+
+}
+
+} // End of namespace Sludge