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98 lines
3.4 KiB
98 lines
3.4 KiB
/*==LICENSE==* |
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CyanWorlds.com Engine - MMOG client, server and tools |
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Copyright (C) 2011 Cyan Worlds, Inc. |
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This program is free software: you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation, either version 3 of the License, or |
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(at your option) any later version. |
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This program is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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You should have received a copy of the GNU General Public License |
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along with this program. If not, see <http://www.gnu.org/licenses/>. |
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You can contact Cyan Worlds, Inc. by email legal@cyan.com |
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or by snail mail at: |
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Cyan Worlds, Inc. |
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14617 N Newport Hwy |
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Mead, WA 99021 |
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*==LICENSE==*/ |
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#ifndef plParticle_inc |
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#define plParticle_inc |
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#include "hsGeometry3.h" |
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#include "hsColorRGBA.h" |
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// The meat of the particle. These classes, in combination with the plParticleEmitter that spawned it, |
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// should contain everything specific to a particle, necessary to build a renderable poly to represent a |
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// particular particle. (The emitter is necessary for properties (like texture) that are common among all |
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// particles that originated from the same emitter. |
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// For any reference in this object to a particle's poly vertices, the structure is as follows: |
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/* |
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|---| "HSize" |
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V3-----V2 - |
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| / | | "VSize" |
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| / | | |
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| P | - |
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| / | |
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| / | ("P" is the current position of the particle) |
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V0-----V1 |
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So the vertices are arranged counter-clockwise, starting in the lower-left corner. Order all other attributes |
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accordingly. |
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*/ |
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// The class plParticleCore should ONLY contain data necessary for the Drawable to create renderable polys |
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// Everything else goes into plParticleExt. |
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// plParticleEmitter is depending on the order that member variables appear in these classes, so |
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// DON'T MODIFY THEM WITHOUT MAKING SURE THE CONSTRUCTOR TO plParticleEmitter PROPERLY COMPUTES |
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// BASE ADDRESSES AND STRIDES! |
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// No initialization on construct. In nearly all cases, a default value won't be appropriate |
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// so there's no sense doing extra memory writes |
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class plParticleCore |
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{ |
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public: |
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hsPoint3 fPos; |
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UInt32 fColor; // Particle opacity goes into the color's alpha. |
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hsPoint3 fOrientation; // fMiscFlags determines how this should be used. |
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hsVector3 fNormal; |
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hsScalar fHSize, fVSize; // distance from the heart of the particle to the borders of its poly. |
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hsPoint3 fUVCoords[4]; |
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}; |
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class plParticleExt |
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{ |
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public: |
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//hsPoint3 fOldPos; |
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hsVector3 fVelocity; |
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hsScalar fInvMass; // The inverse (1 / mass) is what we actually need for calculations. Storing it this |
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// way allows us to make an object immovable with an inverse mass of 0 (and save a divide). |
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hsVector3 fAcceleration; // Accumulated from multiple forces. |
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hsScalar fLife; // how many seconds before we recycle this? (My particle has more of a life than I do...) |
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hsScalar fStartLife; |
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hsScalar fScale; |
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hsScalar fRadsPerSec; |
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//UInt32 fOrigColor; |
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enum // Miscellaneous flags for particles |
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{ |
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kImmortal = 0x00000001, |
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}; |
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UInt32 fMiscFlags; // I know... 32 bits for a single flag... |
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// Feel free to change this if you've got something to pack it against. |
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}; |
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#endif
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