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engines/hpl1/engine/scene/AnimationState.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/>.
+ *
+ */
+
+/*
+ * Copyright (C) 2006-2010 - Frictional Games
+ *
+ * This file is part of HPL1 Engine.
+ */
+
+#include "hpl1/engine/scene/AnimationState.h"
+
+#include "hpl1/engine/graphics/Animation.h"
+#include "hpl1/engine/math/Math.h"
+#include "hpl1/engine/resources/AnimationManager.h"
+
+#include "hpl1/engine/system/low_level_system.h"
+
+namespace hpl {
+
+//////////////////////////////////////////////////////////////////////////
+// CONSTRUCTORS
+//////////////////////////////////////////////////////////////////////////
+
+//-----------------------------------------------------------------------
+
+cAnimationState::cAnimationState(cAnimation *apAnimation, const tString &asName,
+								 cAnimationManager *apAnimationManager) {
+	mpAnimation = apAnimation;
+
+	mpAnimationManager = apAnimationManager;
+
+	mfLength = mpAnimation->GetLength();
+	msName = asName;
+
+	mbActive = false;
+
+	mfTimePos = 0;
+	mfWeight = 1;
+	mfSpeed = 1.0f;
+	mfBaseSpeed = 1.0f;
+	mfTimePos = 0;
+	mfPrevTimePos = 0;
+
+	mbLoop = false;
+	mbPaused = false;
+
+	mfSpecialEventTime = 0;
+
+	mfFadeStep = 0;
+}
+
+//-----------------------------------------------------------------------
+
+cAnimationState::~cAnimationState() {
+	STLDeleteAll(mvEvents);
+
+	if (mpAnimationManager)
+		mpAnimationManager->Destroy(mpAnimation);
+}
+
+//-----------------------------------------------------------------------
+
+//////////////////////////////////////////////////////////////////////////
+// PUBLIC METHODS
+//////////////////////////////////////////////////////////////////////////
+
+//-----------------------------------------------------------------------
+
+void cAnimationState::Update(float afTimeStep) {
+	// Update animation
+	AddTimePosition(afTimeStep);
+
+	// Fading
+	if (mfFadeStep != 0) {
+		mfWeight += mfFadeStep * afTimeStep;
+
+		if (mfFadeStep < 0 && mfWeight <= 0) {
+			mfWeight = 0;
+			mbActive = false;
+			mfFadeStep = 0;
+		} else if (mfFadeStep > 0 && mfWeight >= 1) {
+			mfWeight = 1;
+			mfFadeStep = 0;
+		}
+	}
+}
+
+//-----------------------------------------------------------------------
+
+bool cAnimationState::IsFading() {
+	return mfFadeStep != 0;
+}
+
+//-----------------------------------------------------------------------
+
+bool cAnimationState::IsOver() {
+	if (mbLoop)
+		return false;
+
+	return mfTimePos >= mfLength;
+}
+
+//-----------------------------------------------------------------------
+
+void cAnimationState::FadeIn(float afTime) {
+	mfFadeStep = 1.0f / ABS(afTime);
+}
+
+void cAnimationState::FadeOut(float afTime) {
+	mfFadeStep = -1.0f / ABS(afTime);
+}
+
+//-----------------------------------------------------------------------
+
+void cAnimationState::SetLength(float afLength) {
+	mfLength = afLength;
+}
+
+float cAnimationState::GetLength() {
+	return mfLength;
+}
+
+//-----------------------------------------------------------------------
+
+void cAnimationState::SetWeight(float afWeight) {
+	mfWeight = afWeight;
+}
+float cAnimationState::GetWeight() {
+	return mfWeight;
+}
+
+//-----------------------------------------------------------------------
+
+void cAnimationState::SetSpeed(float afSpeed) {
+	mfSpeed = afSpeed;
+}
+float cAnimationState::GetSpeed() {
+	return mfSpeed;
+}
+
+//-----------------------------------------------------------------------
+
+void cAnimationState::SetBaseSpeed(float afSpeed) {
+	mfBaseSpeed = afSpeed;
+}
+float cAnimationState::GetBaseSpeed() {
+	return mfBaseSpeed;
+}
+
+//-----------------------------------------------------------------------
+
+void cAnimationState::SetTimePosition(float afPosition) {
+	if (mbLoop) {
+		mfTimePos = cMath::Wrap(afPosition, 0, mfLength);
+	} else {
+		mfTimePos = cMath::Clamp(afPosition, 0, mfLength);
+	}
+}
+
+float cAnimationState::GetTimePosition() {
+	return mfTimePos;
+}
+
+float cAnimationState::GetPreviousTimePosition() {
+	return mfPrevTimePos;
+}
+
+//-----------------------------------------------------------------------
+
+void cAnimationState::SetRelativeTimePosition(float afPosition) {
+	SetTimePosition(afPosition * mfLength);
+}
+
+float cAnimationState::GetRelativeTimePosition() {
+	return mfTimePos / mfLength;
+}
+
+//-----------------------------------------------------------------------
+
+bool cAnimationState::IsActive() {
+	return mbActive;
+}
+void cAnimationState::SetActive(bool abActive) {
+	if (mbActive == abActive)
+		return;
+
+	mbActive = abActive;
+
+	// Should this really be here?
+	mbPaused = false;
+	mfFadeStep = 0;
+}
+
+//-----------------------------------------------------------------------
+
+bool cAnimationState::IsLooping() {
+	return mbLoop;
+}
+void cAnimationState::SetLoop(bool abLoop) {
+	mbLoop = abLoop;
+}
+
+//-----------------------------------------------------------------------
+
+bool cAnimationState::IsPaused() {
+	return mbPaused;
+}
+
+void cAnimationState::SetPaused(bool abPaused) {
+	mbPaused = abPaused;
+}
+
+//-----------------------------------------------------------------------
+
+bool cAnimationState::IsAfterSpecialEvent() {
+	return mfTimePos > mfSpecialEventTime;
+}
+
+bool cAnimationState::IsBeforeSpecialEvent() {
+	return mfTimePos < mfSpecialEventTime;
+}
+
+//-----------------------------------------------------------------------
+
+void cAnimationState::AddTimePosition(float afAdd) {
+	if (mbPaused)
+		return;
+
+	mfPrevTimePos = mfTimePos;
+
+	mfTimePos += afAdd * mfSpeed * mfBaseSpeed;
+
+	SetTimePosition(mfTimePos);
+}
+
+//-----------------------------------------------------------------------
+
+cAnimation *cAnimationState::GetAnimation() {
+	return mpAnimation;
+}
+
+//-----------------------------------------------------------------------
+
+cAnimationEvent *cAnimationState::CreateEvent() {
+	cAnimationEvent *pEvent = hplNew(cAnimationEvent, ());
+	pEvent->mfTime = 0;
+	pEvent->mType = eAnimationEventType_LastEnum;
+	pEvent->msValue = "";
+	mvEvents.push_back(pEvent);
+
+	return pEvent;
+}
+
+cAnimationEvent *cAnimationState::GetEvent(int alIdx) {
+	return mvEvents[alIdx];
+}
+
+int cAnimationState::GetEventNum() {
+	return (int)mvEvents.size();
+}
+
+//-----------------------------------------------------------------------
+
+//////////////////////////////////////////////////////////////////////////
+// SAVE OBJECT STUFF
+//////////////////////////////////////////////////////////////////////////
+
+//-----------------------------------------------------------------------
+
+kBeginSerializeBase(cSaveData_cAnimationState)
+	kSerializeVar(msName, eSerializeType_String)
+
+		kSerializeVar(msAnimationName, eSerializeType_String)
+			kSerializeVar(mfDefaultSpeed, eSerializeType_Float32)
+
+				kSerializeVar(mfLength, eSerializeType_Float32)
+					kSerializeVar(mfWeight, eSerializeType_Float32)
+						kSerializeVar(mfSpeed, eSerializeType_Float32)
+							kSerializeVar(mfTimePos, eSerializeType_Float32)
+
+								kSerializeVar(mbActive, eSerializeType_Bool)
+									kSerializeVar(mbLoop, eSerializeType_Bool)
+										kSerializeVar(mbPaused, eSerializeType_Bool)
+
+											kSerializeVar(mfFadeStep, eSerializeType_Float32)
+												kEndSerialize()
+
+	//-----------------------------------------------------------------------
+
+	iSaveObject *cSaveData_cAnimationState::CreateSaveObject(cSaveObjectHandler *apSaveObjectHandler, cGame *apGame) {
+	return NULL;
+}
+
+//-----------------------------------------------------------------------
+
+int cSaveData_cAnimationState::GetSaveCreatePrio() {
+	return 2;
+}
+
+//-----------------------------------------------------------------------
+
+iSaveData *cAnimationState::CreateSaveData() {
+	return hplNew(cSaveData_cAnimationState, ());
+}
+
+//-----------------------------------------------------------------------
+
+void cAnimationState::SaveToSaveData(iSaveData *apSaveData) {
+	kSaveData_SaveToBegin(cAnimationState);
+
+	kSaveData_SaveTo(msName);
+
+	pData->msAnimationName = mpAnimation->GetFileName();
+	kSaveData_SaveTo(mfBaseSpeed);
+
+	kSaveData_SaveTo(mfLength);
+	kSaveData_SaveTo(mfWeight);
+	kSaveData_SaveTo(mfSpeed);
+	kSaveData_SaveTo(mfTimePos);
+
+	kSaveData_SaveTo(mbActive);
+	kSaveData_SaveTo(mbLoop);
+	kSaveData_SaveTo(mbPaused);
+
+	kSaveData_SaveTo(mfFadeStep);
+}
+
+//-----------------------------------------------------------------------
+
+void cAnimationState::LoadFromSaveData(iSaveData *apSaveData) {
+	kSaveData_LoadFromBegin(cAnimationState);
+
+	kSaveData_LoadFrom(msName);
+
+	kSaveData_LoadFrom(mfLength);
+	kSaveData_LoadFrom(mfWeight);
+	kSaveData_LoadFrom(mfSpeed);
+	kSaveData_LoadFrom(mfTimePos);
+
+	kSaveData_LoadFrom(mfBaseSpeed);
+
+	kSaveData_LoadFrom(mbActive);
+	kSaveData_LoadFrom(mbLoop);
+	kSaveData_LoadFrom(mbPaused);
+
+	kSaveData_LoadFrom(mfFadeStep);
+}
+
+//-----------------------------------------------------------------------
+
+void cAnimationState::SaveDataSetup(cSaveObjectHandler *apSaveObjectHandler, cGame *apGame) {
+	kSaveData_SetupBegin(cAnimationState);
+}
+
+//-----------------------------------------------------------------------
+
+} // namespace hpl