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authorAndrei Karas <akaras@inbox.ru>2011-01-02 01:48:38 +0200
committerAndrei Karas <akaras@inbox.ru>2011-01-02 02:41:24 +0200
commit3eeae12c498d1a4dbe969462d2ba841f77ee3ccb (patch)
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Initial commit.
This code based on mana client http://www.gitorious.org/mana/mana and my private repository.
Diffstat (limited to 'src/particle.cpp')
-rw-r--r--src/particle.cpp450
1 files changed, 450 insertions, 0 deletions
diff --git a/src/particle.cpp b/src/particle.cpp
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+++ b/src/particle.cpp
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+/*
+ * The Mana Client
+ * Copyright (C) 2006-2009 The Mana World Development Team
+ * Copyright (C) 2009-2010 The Mana Developers
+ *
+ * This file is part of The Mana Client.
+ *
+ * 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 2 of the License, or
+ * 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 <algorithm>
+#include <cmath>
+
+#include "animationparticle.h"
+#include "configuration.h"
+#include "imageparticle.h"
+#include "log.h"
+#include "map.h"
+#include "particle.h"
+#include "particleemitter.h"
+#include "rotationalparticle.h"
+#include "textparticle.h"
+
+#include "resources/resourcemanager.h"
+
+#include "utils/dtor.h"
+#include "utils/mathutils.h"
+#include "utils/xml.h"
+
+#include <guichan/color.hpp>
+
+#include <algorithm>
+#include <cmath>
+
+#define SIN45 0.707106781f
+
+class Graphics;
+class Image;
+
+int Particle::particleCount = 0;
+int Particle::maxCount = 0;
+int Particle::fastPhysics = 0;
+int Particle::emitterSkip = 1;
+bool Particle::enabled = true;
+const float Particle::PARTICLE_SKY = 800.0f;
+
+Particle::Particle(Map *map):
+ mAlpha(1.0f),
+ mLifetimeLeft(-1),
+ mLifetimePast(0),
+ mFadeOut(0),
+ mFadeIn(0),
+ mAlive(ALIVE),
+ mAutoDelete(true),
+ mAllowSizeAdjust(false),
+ mDeathEffectConditions(0x00),
+ mGravity(0.0f),
+ mRandomness(0),
+ mBounce(0.0f),
+ mFollow(false),
+ mTarget(NULL),
+ mAcceleration(0.0f),
+ mInvDieDistance(-1.0f),
+ mMomentum(1.0f)
+{
+ setMap(map);
+ Particle::particleCount++;
+}
+
+Particle::~Particle()
+{
+ // Delete child emitters and child particles
+ clear();
+ //update particle count
+ Particle::particleCount--;
+}
+
+void Particle::setupEngine()
+{
+ Particle::maxCount = config.getIntValue("particleMaxCount");
+ Particle::fastPhysics = config.getIntValue("particleFastPhysics");
+ Particle::emitterSkip = config.getIntValue("particleEmitterSkip") + 1;
+ Particle::enabled = config.getBoolValue("particleeffects");
+ disableAutoDelete();
+ logger->log1("Particle engine set up");
+}
+
+bool Particle::draw(Graphics *, int, int) const
+{
+ return false;
+}
+
+bool Particle::update()
+{
+ if (!mMap)
+ return false;
+
+ if (mLifetimeLeft == 0 && mAlive == ALIVE)
+ mAlive = DEAD_TIMEOUT;
+
+ Vector oldPos = mPos;
+
+ if (mAlive == ALIVE)
+ {
+ //calculate particle movement
+ if (mMomentum != 1.0f)
+ mVelocity *= mMomentum;
+
+ if (mTarget && mAcceleration != 0.0f)
+ {
+ Vector dist = mPos - mTarget->getPosition();
+ dist.x *= SIN45;
+ float invHypotenuse;
+
+ switch (Particle::fastPhysics)
+ {
+ case 1:
+ invHypotenuse = fastInvSqrt(
+ dist.x * dist.x + dist.y * dist.y + dist.z * dist.z);
+ break;
+ case 2:
+ invHypotenuse = 0;
+ if (!dist.x)
+ break;
+
+ invHypotenuse = 2.0f / static_cast<float>(fabs(dist.x))
+ + static_cast<float>(fabs(dist.y))
+ + static_cast<float>(fabs(dist.z));
+ break;
+ default:
+ invHypotenuse = 1.0f / sqrt(
+ dist.x * dist.x + dist.y * dist.y + dist.z * dist.z);
+ break;
+ }
+
+ if (invHypotenuse)
+ {
+ if (mInvDieDistance > 0.0f && invHypotenuse > mInvDieDistance)
+ mAlive = DEAD_IMPACT;
+ float accFactor = invHypotenuse * mAcceleration;
+ mVelocity -= dist * accFactor;
+ }
+ }
+
+ if (mRandomness > 0)
+ {
+ mVelocity.x += (rand() % mRandomness - rand()
+ % mRandomness) / 1000.0f;
+ mVelocity.y += (rand() % mRandomness - rand()
+ % mRandomness) / 1000.0f;
+ mVelocity.z += (rand() % mRandomness - rand()
+ % mRandomness) / 1000.0f;
+ }
+
+ mVelocity.z -= mGravity;
+
+ // Update position
+ mPos.x += mVelocity.x;
+ mPos.y += mVelocity.y * SIN45;
+ mPos.z += mVelocity.z * SIN45;
+
+ // Update other stuff
+ if (mLifetimeLeft > 0)
+ mLifetimeLeft--;
+
+ mLifetimePast++;
+
+ if (mPos.z < 0.0f)
+ {
+ if (mBounce > 0.0f)
+ {
+ mPos.z *= -mBounce;
+ mVelocity *= mBounce;
+ mVelocity.z = -mVelocity.z;
+ }
+ else
+ {
+ mAlive = DEAD_FLOOR;
+ }
+ } else if (mPos.z > PARTICLE_SKY)
+ {
+ mAlive = DEAD_SKY;
+ }
+
+ // Update child emitters
+ if ((mLifetimePast - 1) % Particle::emitterSkip == 0)
+ {
+ for (EmitterIterator e = mChildEmitters.begin();
+ e != mChildEmitters.end(); e++)
+ {
+ Particles newParticles = (*e)->createParticles(mLifetimePast);
+ for (ParticleIterator p = newParticles.begin();
+ p != newParticles.end(); p++)
+ {
+ (*p)->moveBy(mPos);
+ mChildParticles.push_back (*p);
+ }
+ }
+ }
+ }
+
+ // create death effect when the particle died
+ if (mAlive != ALIVE && mAlive != DEAD_LONG_AGO)
+ {
+ if ((mAlive & mDeathEffectConditions) > 0x00 && !mDeathEffect.empty())
+ {
+ Particle* deathEffect = particleEngine->addEffect(
+ mDeathEffect, 0, 0);
+ if (deathEffect)
+ deathEffect->moveBy(mPos);
+ }
+ mAlive = DEAD_LONG_AGO;
+ }
+
+ Vector change = mPos - oldPos;
+
+ // Update child particles
+
+ for (ParticleIterator p = mChildParticles.begin();
+ p != mChildParticles.end(); )
+ {
+ //move particle with its parent if desired
+ if ((*p)->doesFollow())
+ (*p)->moveBy(change);
+
+ //update particle
+ if ((*p)->update())
+ {
+ p++;
+ }
+ else
+ {
+ delete (*p);
+ p = mChildParticles.erase(p);
+ }
+ }
+ if (mAlive != ALIVE && mChildParticles.empty() && mAutoDelete)
+ return false;
+
+ return true;
+}
+
+void Particle::moveBy(const Vector &change)
+{
+ mPos += change;
+ for (ParticleIterator p = mChildParticles.begin();
+ p != mChildParticles.end(); p++)
+ {
+ if ((*p)->doesFollow())
+ (*p)->moveBy(change);
+ }
+}
+
+void Particle::moveTo(float x, float y)
+{
+ moveTo(Vector(x, y, mPos.z));
+}
+
+Particle *Particle::createChild()
+{
+ Particle *newParticle = new Particle(mMap);
+ mChildParticles.push_back(newParticle);
+ return newParticle;
+}
+
+Particle *Particle::addEffect(const std::string &particleEffectFile,
+ int pixelX, int pixelY, int rotation)
+{
+ Particle *newParticle = NULL;
+
+ XML::Document doc(particleEffectFile);
+ xmlNodePtr rootNode = doc.rootNode();
+
+ if (!rootNode || !xmlStrEqual(rootNode->name, BAD_CAST "effect"))
+ {
+ logger->log("Error loading particle: %s", particleEffectFile.c_str());
+ return NULL;
+ }
+
+ ResourceManager *resman = ResourceManager::getInstance();
+
+ // 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);
+ }
+ // Rotational
+ else if ((node = XML::findFirstChildByName(
+ effectChildNode, "rotation")))
+ {
+ newParticle = new RotationalParticle(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
+ float offsetX = XML::getFloatProperty(
+ effectChildNode, "position-x", 0);
+ float offsetY = XML::getFloatProperty(
+ effectChildNode, "position-y", 0);
+ float offsetZ = XML::getFloatProperty(
+ effectChildNode, "position-z", 0);
+ Vector position (mPos.x + (float)pixelX + offsetX,
+ mPos.y + (float)pixelY + offsetY,
+ mPos.z + offsetZ);
+ newParticle->moveTo(position);
+
+ int lifetime = XML::getProperty(effectChildNode, "lifetime", -1);
+ newParticle->setLifetime(lifetime);
+ bool resizeable = "false" != XML::getProperty(effectChildNode,
+ "size-adjustable", "false");
+
+ newParticle->setAllowSizeAdjust(resizeable);
+
+ // Look for additional emitters for this particle
+ for_each_xml_child_node(emitterNode, effectChildNode)
+ {
+ if (xmlStrEqual(emitterNode->name, BAD_CAST "emitter"))
+ {
+ ParticleEmitter *newEmitter;
+ newEmitter = new ParticleEmitter(
+ emitterNode, newParticle, mMap, rotation);
+ newParticle->addEmitter(newEmitter);
+ }
+ else if (xmlStrEqual(emitterNode->name, BAD_CAST "deatheffect"))
+ {
+ std::string deathEffect = (const char*)emitterNode
+ ->xmlChildrenNode->content;
+
+ char deathEffectConditions = 0x00;
+ if (XML::getBoolProperty(emitterNode, "on-floor", true))
+ {
+ deathEffectConditions += Particle::DEAD_FLOOR;
+ }
+ if (XML::getBoolProperty(emitterNode, "on-sky", true))
+ {
+ deathEffectConditions += Particle::DEAD_SKY;
+ }
+ if (XML::getBoolProperty(emitterNode, "on-other", false))
+ {
+ deathEffectConditions += Particle::DEAD_OTHER;
+ }
+ if (XML::getBoolProperty(emitterNode, "on-impact", true))
+ {
+ deathEffectConditions += Particle::DEAD_IMPACT;
+ }
+ if (XML::getBoolProperty(emitterNode, "on-timeout", true))
+ {
+ deathEffectConditions += Particle::DEAD_TIMEOUT;
+ }
+ newParticle->setDeathEffect(
+ deathEffect, deathEffectConditions);
+ }
+ }
+
+ mChildParticles.push_back(newParticle);
+ }
+
+ return newParticle;
+}
+
+Particle *Particle::addTextSplashEffect(const std::string &text, int x, int y,
+ const gcn::Color *color,
+ gcn::Font *font, bool outline)
+{
+ Particle *newParticle = new TextParticle(mMap, text, color, font, outline);
+ newParticle->moveTo(static_cast<float>(x), static_cast<float>(y));
+ newParticle->setVelocity(((rand() % 100) - 50) / 200.0f, // X
+ ((rand() % 100) - 50) / 200.0f, // Y
+ ((rand() % 100) / 200.0f) + 4.0f); // Z
+ newParticle->setGravity(0.1f);
+ newParticle->setBounce(0.5f);
+ newParticle->setLifetime(200);
+ newParticle->setFadeOut(100);
+
+ mChildParticles.push_back(newParticle);
+
+ return newParticle;
+}
+
+Particle *Particle::addTextRiseFadeOutEffect(const std::string &text,
+ int x, int y,
+ const gcn::Color *color,
+ gcn::Font *font, bool outline)
+{
+ Particle *newParticle = new TextParticle(mMap, text, color, font, outline);
+ newParticle->moveTo(static_cast<float>(x), static_cast<float>(y));
+ newParticle->setVelocity(0.0f, 0.0f, 0.5f);
+ newParticle->setGravity(0.0015f);
+ newParticle->setLifetime(300);
+ newParticle->setFadeOut(50);
+ newParticle->setFadeIn(200);
+
+ mChildParticles.push_back(newParticle);
+
+ return newParticle;
+}
+
+void Particle::adjustEmitterSize(int w, int h)
+{
+ if (mAllowSizeAdjust)
+ {
+ for (EmitterIterator e = mChildEmitters.begin();
+ e != mChildEmitters.end(); e++)
+ {
+ (*e)->adjustSize(w, h);
+ }
+ }
+}
+
+void Particle::clear()
+{
+ delete_all(mChildEmitters);
+ mChildEmitters.clear();
+
+ delete_all(mChildParticles);
+ mChildParticles.clear();
+}