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engines/zvision/scripting/effects/animation_effect.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 "common/scummsys.h"
+#include "graphics/surface.h"
+#include "video/video_decoder.h"
+#include "zvision/zvision.h"
+#include "zvision/graphics/render_manager.h"
+#include "zvision/scripting/script_manager.h"
+#include "zvision/scripting/effects/animation_effect.h"
+
+namespace ZVision {
+
+AnimationEffect::AnimationEffect(ZVision *engine, uint32 controlKey, const Common::Path &fileName, int32 mask, int32 frate, bool disposeAfterUse)
+	: ScriptingEffect(engine, controlKey, SCRIPTING_EFFECT_ANIM),
+	  _disposeAfterUse(disposeAfterUse),
+	  _mask(mask),
+	  _animation(NULL) {
+
+	_animation = engine->loadAnimation(fileName);
+
+	if (frate > 0) {
+		_frmDelayOverride = (int32)(1000.0 / frate);
+
+		// WORKAROUND: We do not allow the engine to delay more than 66 msec
+		// per frame (15fps max)
+		if (_frmDelayOverride > 66)
+			_frmDelayOverride = 66;
+	} else {
+		_frmDelayOverride = 0;
+	}
+}
+
+AnimationEffect::~AnimationEffect() {
+	if (_animation)
+		delete _animation;
+
+	_engine->getScriptManager()->setStateValue(_key, 2);
+
+	PlayNodes::iterator it = _playList.begin();
+	if (it != _playList.end()) {
+		_engine->getScriptManager()->setStateValue((*it).slot, 2);
+
+		if ((*it)._scaled) {
+			(*it)._scaled->free();
+			delete(*it)._scaled;
+		}
+	}
+
+	_playList.clear();
+}
+
+bool AnimationEffect::process(uint32 deltaTimeInMillis) {
+	ScriptManager *scriptManager = _engine->getScriptManager();
+	RenderManager *renderManager = _engine->getRenderManager();
+	RenderTable::RenderState renderState = renderManager->getRenderTable()->getRenderState();
+	bool isPanorama = (renderState == RenderTable::PANORAMA);
+	int16 velocity = _engine->getMouseVelocity() + _engine->getKeyboardVelocity();
+
+	// Do not update animation nodes in panoramic mode while turning, if the user
+	// has set this option
+	if (scriptManager->getStateValue(StateKey_NoTurnAnim) == 1 && isPanorama && velocity)
+		return false;
+
+	PlayNodes::iterator it = _playList.begin();
+	if (it != _playList.end()) {
+		playnode *nod = &(*it);
+
+		if (nod->_curFrame == -1) {
+			// The node is just beginning playback
+			nod->_curFrame = nod->start;
+
+			_animation->start();
+			_animation->seekToFrame(nod->start);
+			_animation->setEndFrame(nod->stop);
+
+			nod->_delay = deltaTimeInMillis; // Force the frame to draw
+			if (nod->slot)
+				scriptManager->setStateValue(nod->slot, 1);
+		} else if (_animation->endOfVideo()) {
+			// The node has reached the end; check if we need to loop
+			nod->loop--;
+
+			if (nod->loop == 0) {
+				if (nod->slot >= 0)
+					scriptManager->setStateValue(nod->slot, 2);
+				if (nod->_scaled) {
+					nod->_scaled->free();
+					delete nod->_scaled;
+				}
+				_playList.erase(it);
+				return _disposeAfterUse;
+			}
+
+			nod->_curFrame = nod->start;
+			_animation->seekToFrame(nod->start);
+		}
+
+		// Check if we need to draw a frame
+		bool needsUpdate = false;
+		if (_frmDelayOverride == 0) {
+			// If not overridden, use the VideoDecoder's check
+			needsUpdate = _animation->needsUpdate();
+		} else {
+			// Otherwise, implement our own timing
+			nod->_delay -= deltaTimeInMillis;
+
+			if (nod->_delay <= 0) {
+				nod->_delay += _frmDelayOverride;
+				needsUpdate = true;
+			}
+		}
+
+		if (needsUpdate) {
+			const Graphics::Surface *frame = _animation->decodeNextFrame();
+
+			if (frame) {
+				int dstw;
+				int dsth;
+				if (isPanorama) {
+					dstw = nod->pos.height();
+					dsth = nod->pos.width();
+				} else {
+					dstw = nod->pos.width();
+					dsth = nod->pos.height();
+				}
+
+				// We only scale down the animation to fit its frame, not up, otherwise we
+				// end up with distorted animations - e.g. the armor visor in location cz1e
+				// in Nemesis (one of the armors inside Irondune), or the planet in location
+				// aa10 in Nemesis (Juperon, outside the asylum). We do allow scaling up only
+				// when a simple 2x filter is requested (e.g. the alchemists and cup sequence
+				// in Nemesis)
+				if (frame->w > dstw || frame->h > dsth || (frame->w == dstw / 2 && frame->h == dsth / 2)) {
+					if (nod->_scaled)
+						if (nod->_scaled->w != dstw || nod->_scaled->h != dsth) {
+							nod->_scaled->free();
+							delete nod->_scaled;
+							nod->_scaled = NULL;
+						}
+
+					if (!nod->_scaled) {
+						nod->_scaled = new Graphics::Surface;
+						nod->_scaled->create(dstw, dsth, frame->format);
+					}
+
+					renderManager->scaleBuffer(frame->getPixels(), nod->_scaled->getPixels(), frame->w, frame->h, frame->format.bytesPerPixel, dstw, dsth);
+					frame = nod->_scaled;
+				}
+
+				if (isPanorama) {
+					Graphics::Surface *transposed = RenderManager::tranposeSurface(frame);
+					renderManager->blitSurfaceToBkg(*transposed, nod->pos.left, nod->pos.top, _mask);
+					transposed->free();
+					delete transposed;
+				} else {
+					renderManager->blitSurfaceToBkg(*frame, nod->pos.left, nod->pos.top, _mask);
+				}
+			}
+		}
+	}
+
+	return false;
+}
+
+void AnimationEffect::addPlayNode(int32 slot, int x, int y, int x2, int y2, int startFrame, int endFrame, int loops) {
+	playnode nod;
+	nod.loop = loops;
+	nod.pos = Common::Rect(x, y, x2 + 1, y2 + 1);
+	nod.start = startFrame;
+	nod.stop = CLIP<int>(endFrame, 0, _animation->getFrameCount() - 1);
+	nod.slot = slot;
+	nod._curFrame = -1;
+	nod._delay = 0;
+	nod._scaled = NULL;
+	_playList.push_back(nod);
+}
+
+bool AnimationEffect::stop() {
+	PlayNodes::iterator it = _playList.begin();
+	if (it != _playList.end()) {
+		_engine->getScriptManager()->setStateValue((*it).slot, 2);
+		if ((*it)._scaled) {
+			(*it)._scaled->free();
+			delete(*it)._scaled;
+		}
+	}
+
+	_playList.clear();
+
+	// We don't need to delete, it's may be reused
+	return false;
+}
+
+} // End of namespace ZVision