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engines/hpl1/engine/graphics/ParticleEmitter.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/graphics/ParticleEmitter.h"
+#include "hpl1/engine/graphics/Graphics.h"
+#include "hpl1/engine/graphics/MaterialHandler.h"
+#include "hpl1/engine/resources/ImageManager.h"
+#include "hpl1/engine/resources/MaterialManager.h"
+#include "hpl1/engine/resources/Resources.h"
+#include "hpl1/engine/system/low_level_system.h"
+
+namespace hpl {
+
+//////////////////////////////////////////////////////////////////////////
+// DATA LOADER
+//////////////////////////////////////////////////////////////////////////
+
+//-----------------------------------------------------------------------
+
+iParticleEmitterData::iParticleEmitterData(const tString &asName, cResources *apResources,
+										   cGraphics *apGraphics) {
+	msName = asName;
+	mpResources = apResources;
+	mpGraphics = apGraphics;
+
+	mfWarmUpTime = 0;
+	mfWarmUpStepsPerSec = 20;
+}
+
+//-----------------------------------------------------------------------
+
+iParticleEmitterData::~iParticleEmitterData() {
+	for (int i = 0; i < (int)mvMaterials.size(); i++) {
+		if (mvMaterials[i])
+			mpResources->GetMaterialManager()->Destroy(mvMaterials[i]);
+	}
+}
+//-----------------------------------------------------------------------
+
+void iParticleEmitterData::AddMaterial(iMaterial *apMaterial) {
+	mvMaterials.push_back(apMaterial);
+}
+
+//-----------------------------------------------------------------------
+
+//////////////////////////////////////////////////////////////////////////
+// CONSTRUCTORS
+//////////////////////////////////////////////////////////////////////////
+
+//-----------------------------------------------------------------------
+
+iParticleEmitter::iParticleEmitter(tMaterialVec *avMaterials,
+								   unsigned int alMaxParticles, cVector3f avSize,
+								   cGraphics *apGraphics, cResources *apResources) {
+	mpGraphics = apGraphics;
+	mpResources = apResources;
+
+	mvParticles.resize(alMaxParticles);
+	for (int i = 0; i < (int)alMaxParticles; i++) {
+		mvParticles[i] = hplNew(cParticle, ());
+	}
+	mlMaxParticles = alMaxParticles;
+	mlNumOfParticles = 0;
+
+	mvMaterials = avMaterials;
+
+	// Update vars:
+	mbDying = false;
+	mfTime = 0;
+	mfFrame = 0;
+
+	mbUpdateGfx = true;
+	mbUpdateBV = true;
+}
+
+//-----------------------------------------------------------------------
+
+iParticleEmitter::~iParticleEmitter() {
+	for (int i = 0; i < (int)mvParticles.size(); i++) {
+		hplDelete(mvParticles[i]);
+	}
+}
+
+//-----------------------------------------------------------------------
+
+//////////////////////////////////////////////////////////////////////////
+// PUBLIC METHODS
+//////////////////////////////////////////////////////////////////////////
+
+//-----------------------------------------------------------------------
+
+void iParticleEmitter::Update(float afTimeStep) {
+	UpdateMotion(afTimeStep);
+
+	mfTime++;
+	mbUpdateGfx = true;
+	mbUpdateBV = true;
+}
+
+//-----------------------------------------------------------------------
+
+void iParticleEmitter::KillInstantly() {
+	mlMaxParticles = 0;
+	mlNumOfParticles = 0;
+	mbDying = true;
+}
+
+//-----------------------------------------------------------------------
+
+//////////////////////////////////////////////////////////////////////////
+// PROTECTED METHODS
+//////////////////////////////////////////////////////////////////////////
+
+//-----------------------------------------------------------------------
+
+cParticle *iParticleEmitter::CreateParticle() {
+	if (mlNumOfParticles == mlMaxParticles)
+		return NULL;
+	++mlNumOfParticles;
+	return mvParticles[mlNumOfParticles - 1];
+}
+
+//-----------------------------------------------------------------------
+
+void iParticleEmitter::SwapRemove(unsigned int alIndex) {
+	if (alIndex < mlNumOfParticles - 1) {
+		cParticle *pTemp = mvParticles[alIndex];
+		mvParticles[alIndex] = mvParticles[mlNumOfParticles - 1];
+		mvParticles[mlNumOfParticles - 1] = pTemp;
+	}
+	mlNumOfParticles--;
+}
+
+//-----------------------------------------------------------------------
+
+} // namespace hpl