From 9b1dee8a2bed82df98d68001b9458f29a780c71e Mon Sep 17 00:00:00 2001
From: Chris Xiong <chirs241097@gmail.com>
Date: Mon, 16 May 2016 23:49:34 +0800
Subject: Finish the particle system.
---
visualization/extrasmeltutils.cpp | 73 ++++++++++++++++++++++++++++++++++-----
visualization/extrasmeltutils.hpp | 6 ++++
2 files changed, 70 insertions(+), 9 deletions(-)
(limited to 'visualization')
diff --git a/visualization/extrasmeltutils.cpp b/visualization/extrasmeltutils.cpp
index 160f7d6..a2ccf2c 100644
--- a/visualization/extrasmeltutils.cpp
+++ b/visualization/extrasmeltutils.cpp
@@ -1,7 +1,10 @@
#include <cstdarg>
+#include <ctime>
+#include <algorithm>
#include "extrasmeltutils.hpp"
SMELT* smEntity3DBuffer::sm=NULL;
SMELT* smParticle::sm=NULL;
+SMELT* smParticleSystem::sm=NULL;
smVertex makeVertex(float x,float y,float z,DWORD color,float tx,float ty)
{smVertex v;v.x=x;v.y=y;v.z=z;v.col=color;v.tx=tx;v.ty=ty;return v;}
void smEntity3D::addVerices(int n,...)
@@ -60,13 +63,14 @@ void smEntity3DBuffer::drawBatch()
sm->smDrawCustomIndexedVertices(&vertices[0],&indices[0],vertices.size(),indices.size(),BLEND_ALPHABLEND,0);
vertices.clear();indices.clear();
}
-smParticle::smParticle(){sm=smGetInterface(SMELT_APILEVEL);}
+smParticle::smParticle()
+{sm=smGetInterface(SMELT_APILEVEL);dead=false;lifespan=0;}
smParticle::~smParticle(){sm->smRelease();}
void smParticle::render()
{sm->smRenderQuad(&q);}
void smParticle::update()
{
- clifespan+=sm->smGetDelta();
+ clifespan+=sm->smGetDelta();if(clifespan>lifespan){dead=true;return;}
vel=vel+accel;pos=pos+vel;rotv=rotv+rota;rot=rot+rotv;
size=clifespan/lifespan*(finalsize-initsize)+initsize;
color=ARGB(
@@ -74,21 +78,72 @@ void smParticle::update()
(DWORD)(clifespan/lifespan*(GETR(finalcolor)-GETR(initcolor)+GETR(initcolor))),
(DWORD)(clifespan/lifespan*(GETG(finalcolor)-GETG(initcolor)+GETG(initcolor))),
(DWORD)(clifespan/lifespan*(GETB(finalcolor)-GETB(initcolor)+GETB(initcolor))));
- //set up the quad
+ for(int i=0;i<4;++i)q.v[i].col=color;
+ smMatrix m;m.loadIdentity();m.rotate(rot.x,1,0,0);m.rotate(rot.y,0,1,0);m.rotate(rot.z,0,0,1);
+ smvec3d v0=m*smvec3d(-size,-size,0),v1=m*smvec3d(size,-size,0);
+ smvec3d v2=m*smvec3d(size,size,0),v3=m*smvec3d(-size,size,0);
+ q.v[0].x=v0.x;q.v[0].y=v0.y;q.v[0].z=v0.z;
+ q.v[1].x=v1.x;q.v[1].y=v1.y;q.v[1].z=v1.z;
+ q.v[2].x=v2.x;q.v[2].y=v2.y;q.v[2].z=v2.z;
+ q.v[3].x=v3.x;q.v[3].y=v3.y;q.v[3].z=v3.z;
}
-smParticleSystem::smParticleSystem(){particles.clear();posGenerator=NULL;}
+smParticleSystem::smParticleSystem()
+{sm=smGetInterface(SMELT_APILEVEL);particles.clear();posGenerator=NULL;}
smParticleSystem::~smParticleSystem()
-{for(int i=0;i<particles.size();++i)delete particles[i];particles.clear();}
+{for(unsigned i=0;i<particles.size();++i)delete particles[i];particles.clear();}
void smParticleSystem::setParticleSystemInfo(smParticleSystemInfo _psinfo)
{psinfo=_psinfo;}
void smParticleSystem::setPos(smvec3d _pos){pos=_pos;}
void smParticleSystem::setPSEmissionPosGen(smPSEmissionPositionGenerator *_gen)
{posGenerator=_gen;}
void smParticleSystem::startPS()
-{}
+{active=true;nemdelay=0;re.setSeed(time(NULL));}
void smParticleSystem::stopPS()
-{}
+{active=false;}
void smParticleSystem::updatePS()
-{}
+{
+ cemdelay+=sm->smGetDelta();
+ if(cemdelay>nemdelay)
+ {
+ int ec=re.nextInt(psinfo.emissioncount-psinfo.ecvar,psinfo.emissioncount+psinfo.ecvar);
+ for(int i=0;i<ec;++i)
+ {
+ smParticle *p=new smParticle();
+ p->pos=pos+(posGenerator?posGenerator->genPos():smvec3d(0,0,0));
+ p->rot=smvec3d(0,0,0);
+ p->lifespan=re.nextDouble(psinfo.lifespan-psinfo.lifespanvar,psinfo.lifespan+psinfo.lifespanvar);
+ p->initsize=re.nextDouble(psinfo.initsize-psinfo.initsizevar,psinfo.initsize+psinfo.initsizevar);
+ p->finalsize=re.nextDouble(psinfo.finalsize-psinfo.finalsizevar,psinfo.finalsize+psinfo.finalsizevar);
+ p->size=p->initsize;
+ p->initcolor=ARGB(
+ re.nextInt(GETA(psinfo.initcolor)-GETA(psinfo.initcolorvar),GETA(psinfo.initcolor)+GETA(psinfo.initcolorvar)),
+ re.nextInt(GETR(psinfo.initcolor)-GETR(psinfo.initcolorvar),GETR(psinfo.initcolor)+GETR(psinfo.initcolorvar)),
+ re.nextInt(GETG(psinfo.initcolor)-GETG(psinfo.initcolorvar),GETG(psinfo.initcolor)+GETG(psinfo.initcolorvar)),
+ re.nextInt(GETB(psinfo.initcolor)-GETB(psinfo.initcolorvar),GETB(psinfo.initcolor)+GETB(psinfo.initcolorvar)));
+ p->finalcolor=ARGB(
+ re.nextInt(GETA(psinfo.finalcolor)-GETA(psinfo.finalcolorvar),GETA(psinfo.finalcolor)+GETA(psinfo.finalcolorvar)),
+ re.nextInt(GETR(psinfo.finalcolor)-GETR(psinfo.finalcolorvar),GETR(psinfo.finalcolor)+GETR(psinfo.finalcolorvar)),
+ re.nextInt(GETG(psinfo.finalcolor)-GETG(psinfo.finalcolorvar),GETG(psinfo.finalcolor)+GETG(psinfo.finalcolorvar)),
+ re.nextInt(GETB(psinfo.finalcolor)-GETB(psinfo.finalcolorvar),GETB(psinfo.finalcolor)+GETB(psinfo.finalcolorvar)));
+ p->color=p->initcolor;p->q.tex=psinfo.texture;p->q.blend=psinfo.blend;
+ p->q.v[0].tx=p->q.v[3].tx=0;p->q.v[0].ty=p->q.v[1].ty=0;
+ p->q.v[1].tx=p->q.v[2].tx=1;p->q.v[2].ty=p->q.v[3].ty=1;
+ particles.push_back(p);
+ }
+ cemdelay=0;
+ nemdelay=re.nextDouble(psinfo.emissiondelay-psinfo.edvar,psinfo.emissiondelay+psinfo.edvar);
+ }
+ for(unsigned i=0,j;i<particles.size()&&!particles[i]->dead;++i)
+ {
+ particles[i]->update();
+ if(particles[i]->dead)
+ {
+ for(j=particles.size()-1;j>i&&particles[j]->dead;--j);
+ std::swap(particles[i],particles[j]);
+ }
+ }
+ while(!particles.empty()&&particles.back()->dead)
+ {delete particles.back();particles.back()=NULL;particles.pop_back();}
+}
void smParticleSystem::renderPS()
-{}
+{for(unsigned i=0;i<particles.size();++i)particles[i]->render();}
diff --git a/visualization/extrasmeltutils.hpp b/visualization/extrasmeltutils.hpp
index 092fbfb..bd103b0 100644
--- a/visualization/extrasmeltutils.hpp
+++ b/visualization/extrasmeltutils.hpp
@@ -3,6 +3,7 @@
#include <vector>
#include <smelt.hpp>
#include <smmath.hpp>
+#include <smrandom.hpp>
class smEntity3D
{
friend class smEntity3DBuffer;
@@ -59,6 +60,7 @@ class smParticle
double initsize,finalsize,size;
DWORD color,initcolor,finalcolor;
smQuad q;
+ bool dead;
public:
smParticle();
~smParticle();
@@ -68,10 +70,14 @@ class smParticle
class smParticleSystem
{
private:
+ static SMELT* sm;
std::vector<smParticle*> particles;
smParticleSystemInfo psinfo;
smvec3d pos;
+ smRandomEngine re;
smPSEmissionPositionGenerator* posGenerator;
+ bool active;
+ double cemdelay,nemdelay;
public:
smParticleSystem();
~smParticleSystem();
--
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