diff options
Diffstat (limited to 'src/particle.cpp')
| -rw-r--r-- | src/particle.cpp | 366 |
1 files changed, 366 insertions, 0 deletions
diff --git a/src/particle.cpp b/src/particle.cpp new file mode 100644 index 00000000..bb28c873 --- /dev/null +++ b/src/particle.cpp @@ -0,0 +1,366 @@ +/*
+ * The Mana World
+ * Copyright 2006 The Mana World Development Team
+ *
+ * This file is part of The Mana World.
+ *
+ * The Mana World 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 2 of the License, or
+ * any later version.
+ *
+ * The Mana World 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 The Mana World; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#include "particle.h"
+
+#include <cmath>
+
+#include "animationparticle.h"
+#include "configuration.h"
+#include "imageparticle.h"
+#include "log.h"
+#include "map.h"
+#include "particleemitter.h"
+#include "textparticle.h"
+
+#include "resources/resourcemanager.h"
+
+#include "utils/dtor.h"
+#include "utils/fastsqrt.h"
+#include "utils/xml.h"
+
+class Graphics;
+class Image;
+
+int Particle::particleCount = 0;
+int Particle::maxCount = 0;
+int Particle::fastPhysics = 0;
+int Particle::emitterSkip = 1;
+const float Particle::PARTICLE_SKY = 800.0f;
+
+Particle::Particle(Map *map) :
+ mAlive(true),
+ mPosX(0.0f), mPosY(0.0f), mPosZ(0.0f),
+ mLifetimeLeft(-1),
+ mLifetimePast(0),
+ mFadeOut(0),
+ mFadeIn(0),
+ mAutoDelete(true),
+ mMap(map),
+ mVectorX(0.0f), mVectorY(0.0f), mVectorZ(0.0f),
+ mGravity(0.0f),
+ mRandomnes(0),
+ mBounce(0.0f),
+ mTarget(NULL),
+ mAcceleration(0.0f),
+ mInvDieDistance(-1.0f),
+ mMomentum(1.0f)
+{
+ Particle::particleCount++;
+ if (mMap) setSpriteIterator(mMap->addSprite(this));
+}
+
+
+void
+Particle::setupEngine()
+{
+ Particle::maxCount = (int)config.getValue("particleMaxCount", 3000);
+ Particle::fastPhysics = (int)config.getValue("particleFastPhysics", 0);
+ Particle::emitterSkip = (int)config.getValue("particleEmitterSkip", 0) + 1;
+ disableAutoDelete();
+ logger->log("Particle engine set up");
+}
+
+bool
+Particle::update()
+{
+ if (!mMap) return false;
+
+ if (mLifetimeLeft == 0)
+ {
+ mAlive = false;
+ }
+
+ if (mAlive)
+ {
+ //update child emitters
+ if (mLifetimePast%Particle::emitterSkip == 0)
+ {
+ for ( EmitterIterator e = mChildEmitters.begin();
+ e != mChildEmitters.end();
+ e++
+ )
+ {
+ Particles newParticles = (*e)->createParticles();
+ for ( ParticleIterator p = newParticles.begin();
+ p != newParticles.end();
+ p++
+ )
+ {
+ (*p)->moveBy(mPosX, mPosY, mPosZ);
+ mChildParticles.push_back (*p);
+ }
+ }
+ }
+
+ if (mMomentum != 1.0f)
+ {
+ mVectorX *= mMomentum;
+ mVectorY *= mMomentum;
+ mVectorZ *= mMomentum;
+ }
+
+ if (mTarget && mAcceleration != 0.0f)
+ {
+ float distX = mPosX - mTarget->getPosX();
+ float distY = mPosY - mTarget->getPosY();
+ float distZ = mPosZ - mTarget->getPosZ();
+ float invHypotenuse;
+
+ switch(Particle::fastPhysics)
+ {
+ case 1:
+ invHypotenuse = fastInvSqrt(
+ distX * distX + distY * distY + distZ * distZ);
+ break;
+ case 2:
+ invHypotenuse = 2.0f /
+ fabs(distX) + fabs(distY) + fabs(distZ);
+ break;
+ default:
+ invHypotenuse = 1.0f / sqrt(
+ distX * distX + distY * distY + distZ * distZ);
+ break;
+ }
+
+ if (invHypotenuse)
+ {
+ if (mInvDieDistance > 0.0f && invHypotenuse > mInvDieDistance)
+ {
+ logger->log("killed");
+ mAlive = false;
+ }
+ float accFactor = invHypotenuse * mAcceleration;
+ mVectorX -= distX * accFactor;
+ mVectorY -= distY * accFactor;
+ mVectorZ -= distZ * accFactor;
+ }
+ }
+
+ if (mRandomnes > 0)
+ {
+ mVectorX += (rand()%mRandomnes - rand()%mRandomnes) / 1000.0f;
+ mVectorY += (rand()%mRandomnes - rand()%mRandomnes) / 1000.0f;
+ mVectorZ += (rand()%mRandomnes - rand()%mRandomnes) / 1000.0f;
+ }
+
+ mVectorZ -= mGravity;
+
+ // update position
+ mPosX += mVectorX;
+ mPosY += mVectorY;
+ mPosZ += mVectorZ;
+
+ //update other stuff
+ if (mLifetimeLeft > 0)
+ {
+ mLifetimeLeft--;
+ }
+ mLifetimePast++;
+
+ if (mPosZ > PARTICLE_SKY || mPosZ < 0.0f)
+ {
+ if (mBounce && fabs(mVectorZ) > mGravity * 2) {
+ mPosZ *= -mBounce;
+ mVectorX *= mBounce;
+ mVectorY *= mBounce;
+ mVectorZ *= -mBounce;
+ }
+ else {
+ mAlive = false;
+ }
+ }
+ }
+
+ //update child particles
+ for ( ParticleIterator p = mChildParticles.begin();
+ p != mChildParticles.end();
+
+ )
+ {
+ if ((*p)->update())
+ {
+ p++;
+ }else {
+ delete (*p);
+ p = mChildParticles.erase(p);
+ }
+ }
+
+ if (!mAlive && mChildParticles.empty() && mAutoDelete)
+ {
+ return false;
+ };
+
+ return true;
+}
+
+
+void Particle::draw(Graphics *graphics, int offsetX, int offsetY) const
+{
+}
+
+
+Particle*
+Particle::addEffect (std::string particleEffectFile, int pixelX, int pixelY)
+{
+ Particle *newParticle = NULL;
+
+ // XML parser initialisation stuff
+ int size;
+ ResourceManager *resman = ResourceManager::getInstance();
+ char *data = (char*) resman->loadFile(particleEffectFile.c_str(), size);
+
+ if (!data) {
+ logger->log("Warning: Particle engine could not find %s !",
+ particleEffectFile.c_str());
+ return NULL;
+ }
+
+ xmlDocPtr doc = xmlParseMemory(data, size);
+ free(data);
+
+ if (!doc) {
+ logger->log("Warning: Particle engine found syntax error in %s!",
+ particleEffectFile.c_str());
+ return NULL;
+ }
+
+ xmlNodePtr rootNode = xmlDocGetRootElement(doc);
+ if (!rootNode || !xmlStrEqual(rootNode->name, BAD_CAST "effect")) {
+ logger->log("Warning: %s is not a valid particle effect definition file!",
+ particleEffectFile.c_str());
+ return NULL;
+ }
+
+ // parse particles
+ for_each_xml_child_node(effectChildNode, rootNode)
+ {
+ // We're only interested in particles
+ if (!xmlStrEqual(effectChildNode->name, BAD_CAST "particle"))
+ continue;
+
+ // Determine the exact particle type
+ xmlNodePtr node;
+
+ // Animation
+ if ((node = XML::findFirstChildByName(
+ effectChildNode, "animation"))) {
+ newParticle = new AnimationParticle(mMap, node);
+ }
+ // Image
+ else if ((node = XML::findFirstChildByName(
+ effectChildNode, "image"))) {
+ Image *img= resman->getImage((const char*)
+ node->xmlChildrenNode->content);
+
+ newParticle = new ImageParticle(mMap, img);
+ }
+ // Other
+ else {
+ newParticle = new Particle(mMap);
+ }
+
+ // Read and set the basic properties of the particle
+ int offsetX = XML::getProperty(effectChildNode, "position-x", 0);
+ int offsetY = XML::getProperty(effectChildNode, "position-y", 0);
+ int offsetZ = XML::getProperty(effectChildNode, "position-z", 0);
+
+ int particleX = (int)mPosX + pixelX + offsetX;
+ int particleY = (int)mPosY + pixelY + offsetY;
+ int particleZ = (int)mPosZ + offsetZ;
+
+ int lifetime = XML::getProperty(effectChildNode, "lifetime", -1);
+
+ newParticle->setPosition(particleX, particleY, particleZ);
+ newParticle->setLifetime(lifetime);
+
+ // Look for additional emitters for this particle
+ for_each_xml_child_node(emitterNode, effectChildNode)
+ {
+ if (!xmlStrEqual(emitterNode->name, BAD_CAST "emitter"))
+ continue;
+
+ ParticleEmitter *newEmitter;
+ newEmitter = new ParticleEmitter(emitterNode, newParticle, mMap);
+ newParticle->addEmitter(newEmitter);
+ }
+
+ mChildParticles.push_back(newParticle);
+ }
+
+ return newParticle;
+}
+
+
+Particle*
+Particle::addTextSplashEffect(std::string text, gcn::Font *font, gcn::Color color, int x, int y)
+{
+ Particle *newParticle = new TextParticle(mMap, text, font, color);
+ newParticle->setPosition( x,
+ y,
+ 0
+ );
+ newParticle->setVector ( ((rand()%100) - 50) / 200.0f, //X Vector
+ ((rand()%100) - 50) / 200.0f, //Y Vector
+ ((rand()%100) / 200.0f) + 4.0f //Z Vector
+ );
+ newParticle->setGravity(0.1f);
+ newParticle->setBounce(0.5f);
+
+ mChildParticles.push_back(newParticle);
+
+ return newParticle;
+}
+
+
+void
+Particle::setMap(Map *map)
+{
+ mMap = map;
+ if (mMap) setSpriteIterator(mMap->addSprite(this));
+
+ // TODO: Create map emitters based on emitter data in map data
+}
+
+
+Particle::~Particle()
+{
+ //remove from map sprite list
+ if (mMap) mMap->removeSprite(mSpriteIterator);
+ //delete child emitters and child particles
+ clear();
+ Particle::particleCount--;
+}
+
+
+void
+Particle::clear()
+{
+ std::for_each(mChildEmitters.begin(), mChildEmitters.end(),
+ make_dtor(mChildEmitters));
+ mChildEmitters.clear();
+
+ std::for_each(mChildParticles.begin(), mChildParticles.end(),
+ make_dtor(mChildParticles));
+ mChildParticles.clear();
+}
|