Initial commit.

This code based on mana client http://www.gitorious.org/mana/mana
and my private repository.

1 files changed, 450 insertions, 0 deletions

diff --git a/src/particle.cpp b/src/particle.cpp
new file mode 100644
index 000000000..30ed7ea89
--- /dev/null
+++ b/src/particle.cpp
@@ -0,0 +1,450 @@
+/*
+ *  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();
+}