Initial commit.

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

1 files changed, 331 insertions, 0 deletions

diff --git a/src/particle.h b/src/particle.h
new file mode 100644
index 000000000..a512e1f61
--- /dev/null
+++ b/src/particle.h
@@ -0,0 +1,331 @@
+/*
+ *  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/>.
+ */
+
+#ifndef PARTICLE_H
+#define PARTICLE_H
+
+#include "actor.h"
+#include "guichanfwd.h"
+#include "vector.h"
+
+#include <list>
+#include <string>
+
+#ifdef __GNUC__
+#define _UNUSED_  __attribute__ ((unused))
+#else
+#define _UNUSED_
+#endif
+
+class Map;
+class Particle;
+class ParticleEmitter;
+
+typedef std::list<Particle *> Particles;
+typedef Particles::iterator ParticleIterator;
+typedef std::list<ParticleEmitter *> Emitters;
+typedef Emitters::iterator EmitterIterator;
+
+/**
+ * A particle spawned by a ParticleEmitter.
+ */
+class Particle : public Actor
+{
+    public:
+        enum AliveStatus
+        {
+            ALIVE = 0,
+            DEAD_TIMEOUT = 1,
+            DEAD_FLOOR = 2,
+            DEAD_SKY = 4,
+            DEAD_IMPACT = 8,
+            DEAD_OTHER = 16,
+            DEAD_LONG_AGO = 128
+        };
+        static const float PARTICLE_SKY; /**< Maximum Z position
+                                              of particles */
+        static int fastPhysics;          /**< Mode of squareroot calculation */
+        static int particleCount;        /**< Current number of particles */
+        static int maxCount;             /**< Maximum number of particles */
+        static int emitterSkip;          /**< Duration of pause between two
+                                              emitter updates in ticks */
+        static bool enabled;   /**< true when non-crucial particle effects
+                                    are disabled */
+
+        /**
+         * Constructor.
+         *
+         * @param map the map this particle will add itself to, may be NULL
+         */
+        Particle(Map *map);
+
+        /**
+         * Destructor.
+         */
+        ~Particle();
+
+        /**
+         * Deletes all child particles and emitters.
+         */
+        void clear();
+
+        /**
+         * Gives a particle the properties of an engine root particle and loads
+         * the particle-related config settings.
+         */
+        void setupEngine();
+
+        /**
+         * Updates particle position, returns false when the particle should
+         * be deleted.
+         */
+        virtual bool update();
+
+        /**
+         * Draws the particle image.
+         */
+        virtual bool draw(Graphics *graphics, int offsetX, int offsetY) const;
+
+        /**
+         * Necessary for sorting with the other sprites.
+         */
+        virtual int getPixelY() const
+        { return static_cast<int>(mPos.y + mPos.z) - 64; }
+
+        /**
+         * Creates a blank particle as a child of the current particle
+         * Useful for creating target particles
+         */
+        Particle *createChild();
+
+        /**
+         * Creates a child particle that hosts some emitters described in the
+         * particleEffectFile.
+         */
+        Particle *addEffect(const std::string &particleEffectFile,
+                            int pixelX, int pixelY, int rotation = 0);
+
+        /**
+         * Creates a standalone text particle.
+         */
+        Particle *addTextSplashEffect(const std::string &text, int x, int y,
+                                      const gcn::Color *color, gcn::Font *font,
+                                      bool outline = false);
+
+        /**
+         * Creates a standalone text particle.
+         */
+        Particle *addTextRiseFadeOutEffect(const std::string &text,
+                                           int x, int y,
+                                           const gcn::Color *color,
+                                           gcn::Font *font,
+                                           bool outline = false);
+
+        /**
+         * Adds an emitter to the particle.
+         */
+        void addEmitter (ParticleEmitter* emitter)
+        { mChildEmitters.push_back(emitter); }
+
+        /**
+         * Sets the position in 3 dimensional space in pixels relative to map.
+         */
+        void moveTo(const Vector &pos)
+        { moveBy (pos - mPos); }
+
+        /**
+         * Sets the position in 2 dimensional space in pixels relative to map.
+         */
+        void moveTo(float x, float y);
+
+        /**
+         * Changes the particle position relative
+         */
+        void moveBy (const Vector &change);
+
+        /**
+         * Sets the time in game ticks until the particle is destroyed.
+         */
+        void setLifetime(int lifetime)
+        { mLifetimeLeft = lifetime; mLifetimePast = 0; }
+
+        /**
+         * Sets the age of the pixel in game ticks where the particle has
+         * faded in completely.
+         */
+        void setFadeOut(int fadeOut)
+        { mFadeOut = fadeOut; }
+
+        /**
+         * Sets the remaining particle lifetime where the particle starts to
+         * fade out.
+         */
+        void setFadeIn(int fadeIn)
+        { mFadeIn = fadeIn; }
+
+        /**
+         * Sets the current velocity in 3 dimensional space.
+         */
+        void setVelocity(float x, float y, float z)
+        { mVelocity.x = x; mVelocity.y = y; mVelocity.z = z; }
+
+        /**
+         * Sets the downward acceleration.
+         */
+        void setGravity(float gravity)
+        { mGravity = gravity; }
+
+        /**
+         * Sets the ammount of random vector changes
+         */
+        void setRandomness(int r)
+        { mRandomness = r; }
+
+        /**
+         * Sets the ammount of velocity particles retain after
+         * hitting the ground.
+         */
+        void setBounce(float bouncieness)
+        { mBounce = bouncieness; }
+
+        /**
+         * Sets the flag if the particle is supposed to be moved by its parent
+         */
+        void setFollow(bool follow)
+        { mFollow = follow; }
+
+        /**
+         * Gets the flag if the particle is supposed to be moved by its parent
+         */
+        bool doesFollow()
+        { return mFollow; }
+
+        /**
+         * Makes the particle move toward another particle with a
+         * given acceleration and momentum
+         */
+        void setDestination(Particle *target, float accel, float moment)
+        { mTarget = target; mAcceleration = accel; mMomentum = moment; }
+
+        /**
+         * Sets the distance in pixel the particle can come near the target
+         * particle before it is destroyed. Does only make sense after a target
+         * particle has been set using setDestination.
+         */
+        void setDieDistance(float dist)
+        { mInvDieDistance = 1.0f / dist; }
+
+        /**
+         * Changes the size of the emitters so that the effect fills a
+         * rectangle of this size
+         */
+        void adjustEmitterSize(int w, int h);
+
+        void setAllowSizeAdjust(bool adjust)
+        { mAllowSizeAdjust = adjust; }
+
+        bool isAlive() const
+        { return mAlive == ALIVE; }
+
+        /**
+         * Determines whether the particle and its children are all dead
+         */
+        bool isExtinct() const
+        { return !isAlive() && mChildParticles.empty(); }
+
+        /**
+         * Manually marks the particle for deletion.
+         */
+        void kill()
+        { mAlive = DEAD_OTHER; mAutoDelete = true; }
+
+        /**
+         * After calling this function the particle will only request
+         * deletion when kill() is called
+         */
+        void disableAutoDelete()
+        { mAutoDelete = false; }
+
+        /** We consider particles (at least for now) to be one layer-sprites */
+        virtual int getNumberOfLayers() const
+        { return 1; }
+
+        virtual float getAlpha() const
+        { return 1.0f; }
+
+        virtual void setAlpha(float alpha _UNUSED_) {}
+
+        virtual void setDeathEffect(const std::string &effectFile,
+                                    char conditions)
+        { mDeathEffect = effectFile; mDeathEffectConditions = conditions; }
+
+    protected:
+        float mAlpha;               /**< Opacity of the graphical
+                                         representation of the particle */
+        int mLifetimeLeft;          /**< Lifetime left in game ticks*/
+        int mLifetimePast;          /**< Age of the particle in game ticks*/
+        int mFadeOut;               /**< Lifetime in game ticks left where
+                                         fading out begins*/
+        int mFadeIn;                /**< Age in game ticks where fading in is
+                                         finished*/
+        Vector mVelocity;           /**< Speed in pixels per game-tick. */
+
+    private:
+        AliveStatus mAlive;         /**< Is the particle supposed to be
+                                         drawn and updated?*/
+        // generic properties
+        bool mAutoDelete;           /**< May the particle request its deletion
+                                         by the parent particle? */
+        Emitters mChildEmitters;    /**< List of child emitters. */
+        Particles mChildParticles;  /**< List of particles controlled by this
+                                         particle */
+        bool mAllowSizeAdjust;      /**< Can the effect size be adjusted by
+                                         the object props in the map file? */
+        std::string mDeathEffect;   /**< Particle effect file to be spawned
+                                         when the particle dies */
+        char mDeathEffectConditions; /**< Bitfield of death conditions which
+                                          trigger spawning of the death
+                                          particle */
+
+        // dynamic particle
+        float mGravity;             /**< Downward acceleration in pixels per
+                                         game-tick. */
+        int mRandomness;            /**< Ammount of random vector change */
+        float mBounce;              /**< How much the particle bounces off when
+                                         hitting the ground */
+        bool mFollow;               /**< is this particle moved when its parent
+                                         particle moves? */
+
+        // follow-point particles
+        Particle *mTarget;          /**< The particle that attracts
+                                         this particle*/
+        float mAcceleration;        /**< Acceleration towards the target
+                                         particle in pixels per game-tick*/
+        float mInvDieDistance;      /**< Distance in pixels from the target
+                                         particle that causes the destruction
+                                         of the particle*/
+        float mMomentum;            /**< How much speed the particle retains
+                                         after each game tick*/
+};
+
+extern Particle *particleEngine;
+
+#endif