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-rw-r--r--src/engine/renderparticles.cpp1551
1 files changed, 1551 insertions, 0 deletions
diff --git a/src/engine/renderparticles.cpp b/src/engine/renderparticles.cpp
new file mode 100644
index 0000000..17350cf
--- /dev/null
+++ b/src/engine/renderparticles.cpp
@@ -0,0 +1,1551 @@
+// renderparticles.cpp
+
+#include "engine.h"
+#include "rendertarget.h"
+
+Shader *particleshader = NULL, *particlenotextureshader = NULL;
+
+VARP(particlesize, 20, 100, 500);
+
+// Check canemitparticles() to limit the rate that paricles can be emitted for models/sparklies
+// Automatically stops particles being emitted when paused or in reflective drawing
+VARP(emitmillis, 1, 17, 1000);
+static int lastemitframe = 0, emitoffset = 0;
+static bool canemit = false, regenemitters = false, canstep = false;
+
+static bool canemitparticles()
+{
+ if(reflecting || refracting) return false;
+ return canemit || emitoffset;
+}
+
+VARP(showparticles, 0, 1, 1);
+VAR(cullparticles, 0, 1, 1);
+VAR(replayparticles, 0, 1, 1);
+VARN(seedparticles, seedmillis, 0, 3000, 10000);
+VAR(dbgpcull, 0, 0, 1);
+VAR(dbgpseed, 0, 0, 1);
+
+struct particleemitter
+{
+ extentity *ent;
+ vec bbmin, bbmax;
+ vec center;
+ float radius;
+ ivec cullmin, cullmax;
+ int maxfade, lastemit, lastcull;
+
+ particleemitter(extentity *ent)
+ : ent(ent), bbmin(ent->o), bbmax(ent->o), maxfade(-1), lastemit(0), lastcull(0)
+ {}
+
+ void finalize()
+ {
+ center = vec(bbmin).add(bbmax).mul(0.5f);
+ radius = bbmin.dist(bbmax)/2;
+ cullmin = ivec(int(floor(bbmin.x)), int(floor(bbmin.y)), int(floor(bbmin.z)));
+ cullmax = ivec(int(ceil(bbmax.x)), int(ceil(bbmax.y)), int(ceil(bbmax.z)));
+ if(dbgpseed) conoutf(CON_DEBUG, "radius: %f, maxfade: %d", radius, maxfade);
+ }
+
+ void extendbb(const vec &o, float size = 0)
+ {
+ bbmin.x = min(bbmin.x, o.x - size);
+ bbmin.y = min(bbmin.y, o.y - size);
+ bbmin.z = min(bbmin.z, o.z - size);
+ bbmax.x = max(bbmax.x, o.x + size);
+ bbmax.y = max(bbmax.y, o.y + size);
+ bbmax.z = max(bbmax.z, o.z + size);
+ }
+
+ void extendbb(float z, float size = 0)
+ {
+ bbmin.z = min(bbmin.z, z - size);
+ bbmax.z = max(bbmax.z, z + size);
+ }
+};
+
+static vector<particleemitter> emitters;
+static particleemitter *seedemitter = NULL;
+
+void clearparticleemitters()
+{
+ emitters.setsize(0);
+ regenemitters = true;
+}
+
+void addparticleemitters()
+{
+ emitters.setsize(0);
+ const vector<extentity *> &ents = entities::getents();
+ loopv(ents)
+ {
+ extentity &e = *ents[i];
+ if(e.type != ET_PARTICLES) continue;
+ emitters.add(particleemitter(&e));
+ }
+ regenemitters = false;
+}
+
+enum
+{
+ PT_PART = 0,
+ PT_TAPE,
+ PT_TRAIL,
+ PT_TEXT,
+ PT_TEXTICON,
+ PT_METER,
+ PT_METERVS,
+ PT_FIREBALL,
+ PT_LIGHTNING,
+ PT_FLARE,
+
+ PT_MOD = 1<<8,
+ PT_RND4 = 1<<9,
+ PT_LERP = 1<<10, // use very sparingly - order of blending issues
+ PT_TRACK = 1<<11,
+ PT_GLARE = 1<<12,
+ PT_SOFT = 1<<13,
+ PT_HFLIP = 1<<14,
+ PT_VFLIP = 1<<15,
+ PT_ROT = 1<<16,
+ PT_CULL = 1<<17,
+ PT_FEW = 1<<18,
+ PT_ICON = 1<<19,
+ PT_NOTEX = 1<<20,
+ PT_SHADER = 1<<21,
+ PT_FLIP = PT_HFLIP | PT_VFLIP | PT_ROT
+};
+
+const char *partnames[] = { "part", "tape", "trail", "text", "texticon", "meter", "metervs", "fireball", "lightning", "flare" };
+
+struct particle
+{
+ vec o, d;
+ int gravity, fade, millis;
+ bvec color;
+ uchar flags;
+ float size;
+ union
+ {
+ const char *text;
+ float val;
+ physent *owner;
+ struct
+ {
+ uchar color2[3];
+ uchar progress;
+ };
+ };
+};
+
+struct partvert
+{
+ vec pos;
+ bvec4 color;
+ vec2 tc;
+};
+
+#define COLLIDERADIUS 8.0f
+#define COLLIDEERROR 1.0f
+
+struct partrenderer
+{
+ Texture *tex;
+ const char *texname;
+ int texclamp;
+ uint type;
+ int collide;
+ string info;
+
+ partrenderer(const char *texname, int texclamp, int type, int collide = 0)
+ : tex(NULL), texname(texname), texclamp(texclamp), type(type), collide(collide)
+ {
+ }
+ partrenderer(int type, int collide = 0)
+ : tex(NULL), texname(NULL), texclamp(0), type(type), collide(collide)
+ {
+ }
+ virtual ~partrenderer()
+ {
+ }
+
+ virtual void init(int n) { }
+ virtual void reset() = 0;
+ virtual void resettracked(physent *owner) { }
+ virtual particle *addpart(const vec &o, const vec &d, int fade, int color, float size, int gravity = 0) = 0;
+ virtual int adddepthfx(vec &bbmin, vec &bbmax) { return 0; }
+ virtual void update() { }
+ virtual void render() = 0;
+ virtual bool haswork() = 0;
+ virtual int count() = 0; //for debug
+ virtual void cleanup() {}
+
+ virtual void seedemitter(particleemitter &pe, const vec &o, const vec &d, int fade, float size, int gravity)
+ {
+ }
+
+ //blend = 0 => remove it
+ void calc(particle *p, int &blend, int &ts, vec &o, vec &d, bool step = true)
+ {
+ o = p->o;
+ d = p->d;
+ if(type&PT_TRACK && p->owner) game::particletrack(p->owner, o, d);
+ if(p->fade <= 5)
+ {
+ ts = 1;
+ blend = 255;
+ }
+ else
+ {
+ ts = lastmillis-p->millis;
+ blend = max(255 - (ts<<8)/p->fade, 0);
+ if(p->gravity)
+ {
+ if(ts > p->fade) ts = p->fade;
+ float t = ts;
+ o.add(vec(d).mul(t/5000.0f));
+ o.z -= t*t/(2.0f * 5000.0f * p->gravity);
+ }
+ if(collide && o.z < p->val && step)
+ {
+ if(collide >= 0)
+ {
+ vec surface;
+ float floorz = rayfloor(vec(o.x, o.y, p->val), surface, RAY_CLIPMAT, COLLIDERADIUS);
+ float collidez = floorz<0 ? o.z-COLLIDERADIUS : p->val - floorz;
+ if(o.z >= collidez+COLLIDEERROR)
+ p->val = collidez+COLLIDEERROR;
+ else
+ {
+ adddecal(collide, vec(o.x, o.y, collidez), vec(p->o).sub(o).normalize(), 2*p->size, p->color, type&PT_RND4 ? (p->flags>>5)&3 : 0);
+ blend = 0;
+ }
+ }
+ else blend = 0;
+ }
+ }
+ }
+
+ const char *debuginfo()
+ {
+ formatstring(info, "%d\t%s(", count(), partnames[type&0xFF]);
+ if(type&PT_GLARE) concatstring(info, "g,");
+ if(type&PT_SOFT) concatstring(info, "s,");
+ if(type&PT_LERP) concatstring(info, "l,");
+ if(type&PT_MOD) concatstring(info, "m,");
+ if(type&PT_RND4) concatstring(info, "r,");
+ if(type&PT_FLIP) concatstring(info, "f,");
+ if(collide) concatstring(info, "c,");
+ int len = strlen(info);
+ info[len-1] = info[len-1] == ',' ? ')' : '\0';
+ if(texname)
+ {
+ const char *title = strrchr(texname, '/');
+ if(title) concformatstring(info, ": %s", title+1);
+ }
+ return info;
+ }
+};
+
+struct listparticle : particle
+{
+ listparticle *next;
+};
+
+VARP(outlinemeters, 0, 0, 1);
+
+struct listrenderer : partrenderer
+{
+ static listparticle *parempty;
+ listparticle *list;
+
+ listrenderer(const char *texname, int texclamp, int type, int collide = 0)
+ : partrenderer(texname, texclamp, type, collide), list(NULL)
+ {
+ }
+ listrenderer(int type, int collide = 0)
+ : partrenderer(type, collide), list(NULL)
+ {
+ }
+
+ virtual ~listrenderer()
+ {
+ }
+
+ virtual void killpart(listparticle *p)
+ {
+ }
+
+ void reset()
+ {
+ if(!list) return;
+ listparticle *p = list;
+ for(;;)
+ {
+ killpart(p);
+ if(p->next) p = p->next;
+ else break;
+ }
+ p->next = parempty;
+ parempty = list;
+ list = NULL;
+ }
+
+ void resettracked(physent *owner)
+ {
+ if(!(type&PT_TRACK)) return;
+ for(listparticle **prev = &list, *cur = list; cur; cur = *prev)
+ {
+ if(!owner || cur->owner==owner)
+ {
+ *prev = cur->next;
+ cur->next = parempty;
+ parempty = cur;
+ }
+ else prev = &cur->next;
+ }
+ }
+
+ particle *addpart(const vec &o, const vec &d, int fade, int color, float size, int gravity)
+ {
+ if(!parempty)
+ {
+ listparticle *ps = new listparticle[256];
+ loopi(255) ps[i].next = &ps[i+1];
+ ps[255].next = parempty;
+ parempty = ps;
+ }
+ listparticle *p = parempty;
+ parempty = p->next;
+ p->next = list;
+ list = p;
+ p->o = o;
+ p->d = d;
+ p->gravity = gravity;
+ p->fade = fade;
+ p->millis = lastmillis + emitoffset;
+ p->color = bvec(color>>16, (color>>8)&0xFF, color&0xFF);
+ p->size = size;
+ p->owner = NULL;
+ p->flags = 0;
+ return p;
+ }
+
+ int count()
+ {
+ int num = 0;
+ listparticle *lp;
+ for(lp = list; lp; lp = lp->next) num++;
+ return num;
+ }
+
+ bool haswork()
+ {
+ return (list != NULL);
+ }
+
+ virtual void startrender() = 0;
+ virtual void endrender() = 0;
+ virtual void renderpart(listparticle *p, const vec &o, const vec &d, int blend, int ts) = 0;
+
+ void render()
+ {
+ startrender();
+ if(texname)
+ {
+ if(!tex) tex = textureload(texname, texclamp);
+ glBindTexture(GL_TEXTURE_2D, tex->id);
+ }
+
+ for(listparticle **prev = &list, *p = list; p; p = *prev)
+ {
+ vec o, d;
+ int blend, ts;
+ calc(p, blend, ts, o, d, canstep);
+ if(blend > 0)
+ {
+ renderpart(p, o, d, blend, ts);
+
+ if(p->fade > 5 || !canstep)
+ {
+ prev = &p->next;
+ continue;
+ }
+ }
+ //remove
+ *prev = p->next;
+ p->next = parempty;
+ killpart(p);
+ parempty = p;
+ }
+
+ endrender();
+ }
+};
+
+listparticle *listrenderer::parempty = NULL;
+
+struct meterrenderer : listrenderer
+{
+ meterrenderer(int type)
+ : listrenderer(type|PT_NOTEX|PT_LERP)
+ {}
+
+ void startrender()
+ {
+ glDisable(GL_BLEND);
+ gle::defvertex();
+ }
+
+ void endrender()
+ {
+ glEnable(GL_BLEND);
+ }
+
+ void renderpart(listparticle *p, const vec &o, const vec &d, int blend, int ts)
+ {
+ int basetype = type&0xFF;
+ float scale = FONTH*p->size/80.0f, right = 8, left = p->progress/100.0f*right;
+ matrix4x3 m(camright, vec(camup).neg(), vec(camdir).neg(), o);
+ m.scale(scale);
+ m.translate(-right/2.0f, 0, 0);
+
+ if(outlinemeters)
+ {
+ gle::colorf(0, 0.8f, 0);
+ gle::begin(GL_TRIANGLE_STRIP);
+ loopk(10)
+ {
+ const vec2 &sc = sincos360[k*(180/(10-1))];
+ float c = (0.5f + 0.1f)*sc.y, s = 0.5f - (0.5f + 0.1f)*sc.x;
+ gle::attrib(m.transform(vec2(-c, s)));
+ gle::attrib(m.transform(vec2(right + c, s)));
+ }
+ gle::end();
+ }
+
+ if(basetype==PT_METERVS) gle::colorub(p->color2[0], p->color2[1], p->color2[2]);
+ else gle::colorf(0, 0, 0);
+ gle::begin(GL_TRIANGLE_STRIP);
+ loopk(10)
+ {
+ const vec2 &sc = sincos360[k*(180/(10-1))];
+ float c = 0.5f*sc.y, s = 0.5f - 0.5f*sc.x;
+ gle::attrib(m.transform(vec2(left + c, s)));
+ gle::attrib(m.transform(vec2(right + c, s)));
+ }
+ gle::end();
+
+ if(outlinemeters)
+ {
+ gle::colorf(0, 0.8f, 0);
+ gle::begin(GL_TRIANGLE_FAN);
+ loopk(10)
+ {
+ const vec2 &sc = sincos360[k*(180/(10-1))];
+ float c = (0.5f + 0.1f)*sc.y, s = 0.5f - (0.5f + 0.1f)*sc.x;
+ gle::attrib(m.transform(vec2(left + c, s)));
+ }
+ gle::end();
+ }
+
+ gle::color(p->color);
+ gle::begin(GL_TRIANGLE_STRIP);
+ loopk(10)
+ {
+ const vec2 &sc = sincos360[k*(180/(10-1))];
+ float c = 0.5f*sc.y, s = 0.5f - 0.5f*sc.x;
+ gle::attrib(m.transform(vec2(-c, s)));
+ gle::attrib(m.transform(vec2(left + c, s)));
+ }
+ gle::end();
+ }
+};
+static meterrenderer meters(PT_METER), metervs(PT_METERVS);
+
+struct textrenderer : listrenderer
+{
+ textrenderer(int type)
+ : listrenderer(type)
+ {}
+
+ void startrender()
+ {
+ }
+
+ void endrender()
+ {
+ }
+
+ void killpart(listparticle *p)
+ {
+ if(p->text && p->flags&1) delete[] p->text;
+ }
+
+ void renderpart(listparticle *p, const vec &o, const vec &d, int blend, int ts)
+ {
+ float scale = p->size/80.0f, xoff = -(text_width(p->text) + ((p->flags>>1)&7)*FONTH)/2, yoff = 0;
+
+ matrix4x3 m(camright, vec(camup).neg(), vec(camdir).neg(), o);
+ m.scale(scale);
+ m.translate(xoff, yoff, 50);
+
+ textmatrix = &m;
+ draw_text(p->text, 0, 0, p->color.r, p->color.g, p->color.b, blend);
+ textmatrix = NULL;
+ }
+};
+static textrenderer texts(PT_TEXT|PT_LERP);
+
+struct texticonrenderer : listrenderer
+{
+ texticonrenderer(const char *texname, int type)
+ : listrenderer(texname, 3, type)
+ {}
+
+ void startrender()
+ {
+ gle::defvertex();
+ gle::deftexcoord0();
+ gle::defcolor(4, GL_UNSIGNED_BYTE);
+ gle::begin(GL_QUADS);
+ }
+
+ void endrender()
+ {
+ gle::end();
+ }
+
+ void renderpart(listparticle *p, const vec &o, const vec &d, int blend, int ts)
+ {
+ float scale = p->size/80.0f, xoff = p->val, yoff = 0;
+
+ matrix4x3 m(camright, vec(camup).neg(), vec(camdir).neg(), o);
+ m.scale(scale);
+ m.translate(xoff, yoff, 50);
+
+ float tx = 0.25f*(p->flags&3), ty = 0.25f*((p->flags>>2)&3);
+
+ gle::attrib(m.transform(vec2(0, 0)));
+ gle::attrib(tx, ty);
+ gle::attrib(p->color, blend);
+ gle::attrib(m.transform(vec2(FONTH, 0)));
+ gle::attrib(tx + 0.25f, ty);
+ gle::attrib(p->color, blend);
+ gle::attrib(m.transform(vec2(FONTH, FONTH)));
+ gle::attrib(tx + 0.25f, ty + 0.25f);
+ gle::attrib(p->color, blend);
+ gle::attrib(m.transform(vec2(0, FONTH)));
+ gle::attrib(tx, ty + 0.25f);
+ gle::attrib(p->color, blend);
+ }
+};
+static texticonrenderer texticons("packages/hud/items.png", PT_TEXTICON|PT_LERP);
+
+template<int T>
+static inline void modifyblend(const vec &o, int &blend)
+{
+ blend = min(blend<<2, 255);
+}
+
+template<>
+inline void modifyblend<PT_TAPE>(const vec &o, int &blend)
+{
+}
+
+template<int T>
+static inline void genpos(const vec &o, const vec &d, float size, int grav, int ts, partvert *vs)
+{
+ vec udir = vec(camup).sub(camright).mul(size);
+ vec vdir = vec(camup).add(camright).mul(size);
+ vs[0].pos = vec(o.x + udir.x, o.y + udir.y, o.z + udir.z);
+ vs[1].pos = vec(o.x + vdir.x, o.y + vdir.y, o.z + vdir.z);
+ vs[2].pos = vec(o.x - udir.x, o.y - udir.y, o.z - udir.z);
+ vs[3].pos = vec(o.x - vdir.x, o.y - vdir.y, o.z - vdir.z);
+}
+
+template<>
+inline void genpos<PT_TAPE>(const vec &o, const vec &d, float size, int ts, int grav, partvert *vs)
+{
+ vec dir1 = d, dir2 = d, c;
+ dir1.sub(o);
+ dir2.sub(camera1->o);
+ c.cross(dir2, dir1).normalize().mul(size);
+ vs[0].pos = vec(d.x-c.x, d.y-c.y, d.z-c.z);
+ vs[1].pos = vec(o.x-c.x, o.y-c.y, o.z-c.z);
+ vs[2].pos = vec(o.x+c.x, o.y+c.y, o.z+c.z);
+ vs[3].pos = vec(d.x+c.x, d.y+c.y, d.z+c.z);
+}
+
+template<>
+inline void genpos<PT_TRAIL>(const vec &o, const vec &d, float size, int ts, int grav, partvert *vs)
+{
+ vec e = d;
+ if(grav) e.z -= float(ts)/grav;
+ e.div(-75.0f).add(o);
+ genpos<PT_TAPE>(o, e, size, ts, grav, vs);
+}
+
+template<int T>
+static inline void genrotpos(const vec &o, const vec &d, float size, int grav, int ts, partvert *vs, int rot)
+{
+ genpos<T>(o, d, size, grav, ts, vs);
+}
+
+#define ROTCOEFFS(n) { \
+ vec(-1, 1, 0).rotate_around_z(n*2*M_PI/32.0f), \
+ vec( 1, 1, 0).rotate_around_z(n*2*M_PI/32.0f), \
+ vec( 1, -1, 0).rotate_around_z(n*2*M_PI/32.0f), \
+ vec(-1, -1, 0).rotate_around_z(n*2*M_PI/32.0f) \
+}
+static const vec rotcoeffs[32][4] =
+{
+ ROTCOEFFS(0), ROTCOEFFS(1), ROTCOEFFS(2), ROTCOEFFS(3), ROTCOEFFS(4), ROTCOEFFS(5), ROTCOEFFS(6), ROTCOEFFS(7),
+ ROTCOEFFS(8), ROTCOEFFS(9), ROTCOEFFS(10), ROTCOEFFS(11), ROTCOEFFS(12), ROTCOEFFS(13), ROTCOEFFS(14), ROTCOEFFS(15),
+ ROTCOEFFS(16), ROTCOEFFS(17), ROTCOEFFS(18), ROTCOEFFS(19), ROTCOEFFS(20), ROTCOEFFS(21), ROTCOEFFS(22), ROTCOEFFS(7),
+ ROTCOEFFS(24), ROTCOEFFS(25), ROTCOEFFS(26), ROTCOEFFS(27), ROTCOEFFS(28), ROTCOEFFS(29), ROTCOEFFS(30), ROTCOEFFS(31),
+};
+
+template<>
+inline void genrotpos<PT_PART>(const vec &o, const vec &d, float size, int grav, int ts, partvert *vs, int rot)
+{
+ const vec *coeffs = rotcoeffs[rot];
+ (vs[0].pos = o).add(vec(camright).mul(coeffs[0].x*size)).add(vec(camup).mul(coeffs[0].y*size));
+ (vs[1].pos = o).add(vec(camright).mul(coeffs[1].x*size)).add(vec(camup).mul(coeffs[1].y*size));
+ (vs[2].pos = o).add(vec(camright).mul(coeffs[2].x*size)).add(vec(camup).mul(coeffs[2].y*size));
+ (vs[3].pos = o).add(vec(camright).mul(coeffs[3].x*size)).add(vec(camup).mul(coeffs[3].y*size));
+}
+
+template<int T>
+static inline void seedpos(particleemitter &pe, const vec &o, const vec &d, int fade, float size, int grav)
+{
+ if(grav)
+ {
+ vec end(o);
+ float t = fade;
+ end.add(vec(d).mul(t/5000.0f));
+ end.z -= t*t/(2.0f * 5000.0f * grav);
+ pe.extendbb(end, size);
+
+ float tpeak = d.z*grav;
+ if(tpeak > 0 && tpeak < fade) pe.extendbb(o.z + 1.5f*d.z*tpeak/5000.0f, size);
+ }
+}
+
+template<>
+inline void seedpos<PT_TAPE>(particleemitter &pe, const vec &o, const vec &d, int fade, float size, int grav)
+{
+ pe.extendbb(d, size);
+}
+
+template<>
+inline void seedpos<PT_TRAIL>(particleemitter &pe, const vec &o, const vec &d, int fade, float size, int grav)
+{
+ vec e = d;
+ if(grav) e.z -= float(fade)/grav;
+ e.div(-75.0f).add(o);
+ pe.extendbb(e, size);
+}
+
+template<int T>
+struct varenderer : partrenderer
+{
+ partvert *verts;
+ particle *parts;
+ int maxparts, numparts, lastupdate, rndmask;
+ GLuint vbo;
+
+ varenderer(const char *texname, int type, int collide = 0)
+ : partrenderer(texname, 3, type, collide),
+ verts(NULL), parts(NULL), maxparts(0), numparts(0), lastupdate(-1), rndmask(0), vbo(0)
+ {
+ if(type & PT_HFLIP) rndmask |= 0x01;
+ if(type & PT_VFLIP) rndmask |= 0x02;
+ if(type & PT_ROT) rndmask |= 0x1F<<2;
+ if(type & PT_RND4) rndmask |= 0x03<<5;
+ }
+
+ void cleanup()
+ {
+ if(vbo) { glDeleteBuffers_(1, &vbo); vbo = 0; }
+ }
+
+ void init(int n)
+ {
+ DELETEA(parts);
+ DELETEA(verts);
+ parts = new particle[n];
+ verts = new partvert[n*4];
+ maxparts = n;
+ numparts = 0;
+ lastupdate = -1;
+ }
+
+ void reset()
+ {
+ numparts = 0;
+ lastupdate = -1;
+ }
+
+ void resettracked(physent *owner)
+ {
+ if(!(type&PT_TRACK)) return;
+ loopi(numparts)
+ {
+ particle *p = parts+i;
+ if(!owner || (p->owner == owner)) p->fade = -1;
+ }
+ lastupdate = -1;
+ }
+
+ int count()
+ {
+ return numparts;
+ }
+
+ bool haswork()
+ {
+ return (numparts > 0);
+ }
+
+ particle *addpart(const vec &o, const vec &d, int fade, int color, float size, int gravity)
+ {
+ particle *p = parts + (numparts < maxparts ? numparts++ : rnd(maxparts)); //next free slot, or kill a random kitten
+ p->o = o;
+ p->d = d;
+ p->gravity = gravity;
+ p->fade = fade;
+ p->millis = lastmillis + emitoffset;
+ p->color = bvec(color>>16, (color>>8)&0xFF, color&0xFF);
+ p->size = size;
+ p->owner = NULL;
+ p->flags = 0x80 | (rndmask ? rnd(0x80) & rndmask : 0);
+ lastupdate = -1;
+ return p;
+ }
+
+ void seedemitter(particleemitter &pe, const vec &o, const vec &d, int fade, float size, int gravity)
+ {
+ pe.maxfade = max(pe.maxfade, fade);
+ size *= SQRT2;
+ pe.extendbb(o, size);
+
+ seedpos<T>(pe, o, d, fade, size, gravity);
+ if(!gravity) return;
+
+ vec end(o);
+ float t = fade;
+ end.add(vec(d).mul(t/5000.0f));
+ end.z -= t*t/(2.0f * 5000.0f * gravity);
+ pe.extendbb(end, size);
+
+ float tpeak = d.z*gravity;
+ if(tpeak > 0 && tpeak < fade) pe.extendbb(o.z + 1.5f*d.z*tpeak/5000.0f, size);
+ }
+
+ void genverts(particle *p, partvert *vs, bool regen)
+ {
+ vec o, d;
+ int blend, ts;
+
+ calc(p, blend, ts, o, d);
+ if(blend <= 1 || p->fade <= 5) p->fade = -1; //mark to remove on next pass (i.e. after render)
+
+ modifyblend<T>(o, blend);
+
+ if(regen)
+ {
+ p->flags &= ~0x80;
+
+ #define SETTEXCOORDS(u1c, u2c, v1c, v2c, body) \
+ { \
+ float u1 = u1c, u2 = u2c, v1 = v1c, v2 = v2c; \
+ body; \
+ vs[0].tc = vec2(u1, v1); \
+ vs[1].tc = vec2(u2, v1); \
+ vs[2].tc = vec2(u2, v2); \
+ vs[3].tc = vec2(u1, v2); \
+ }
+ if(type&PT_RND4)
+ {
+ float tx = 0.5f*((p->flags>>5)&1), ty = 0.5f*((p->flags>>6)&1);
+ SETTEXCOORDS(tx, tx + 0.5f, ty, ty + 0.5f,
+ {
+ if(p->flags&0x01) swap(u1, u2);
+ if(p->flags&0x02) swap(v1, v2);
+ });
+ }
+ else if(type&PT_ICON)
+ {
+ float tx = 0.25f*(p->flags&3), ty = 0.25f*((p->flags>>2)&3);
+ SETTEXCOORDS(tx, tx + 0.25f, ty, ty + 0.25f, {});
+ }
+ else SETTEXCOORDS(0, 1, 0, 1, {});
+
+ #define SETCOLOR(r, g, b, a) \
+ do { \
+ bvec4 col(r, g, b, a); \
+ loopi(4) vs[i].color = col; \
+ } while(0)
+ #define SETMODCOLOR SETCOLOR((p->color.r*blend)>>8, (p->color.g*blend)>>8, (p->color.b*blend)>>8, 255)
+ if(type&PT_MOD) SETMODCOLOR;
+ else SETCOLOR(p->color.r, p->color.g, p->color.b, blend);
+ }
+ else if(type&PT_MOD) SETMODCOLOR;
+ else loopi(4) vs[i].color.a = blend;
+
+ if(type&PT_ROT) genrotpos<T>(o, d, p->size, ts, p->gravity, vs, (p->flags>>2)&0x1F);
+ else genpos<T>(o, d, p->size, ts, p->gravity, vs);
+ }
+
+ void genverts()
+ {
+ loopi(numparts)
+ {
+ particle *p = &parts[i];
+ partvert *vs = &verts[i*4];
+ if(p->fade < 0)
+ {
+ do
+ {
+ --numparts;
+ if(numparts <= i) return;
+ }
+ while(parts[numparts].fade < 0);
+ *p = parts[numparts];
+ genverts(p, vs, true);
+ }
+ else genverts(p, vs, (p->flags&0x80)!=0);
+ }
+ }
+
+ void update()
+ {
+ if(lastmillis == lastupdate && vbo) return;
+ lastupdate = lastmillis;
+
+ genverts();
+
+ if(!vbo) glGenBuffers_(1, &vbo);
+ gle::bindvbo(vbo);
+ glBufferData_(GL_ARRAY_BUFFER, maxparts*4*sizeof(partvert), NULL, GL_STREAM_DRAW);
+ glBufferSubData_(GL_ARRAY_BUFFER, 0, numparts*4*sizeof(partvert), verts);
+ gle::clearvbo();
+ }
+
+ void render()
+ {
+ if(!tex) tex = textureload(texname, texclamp);
+ glBindTexture(GL_TEXTURE_2D, tex->id);
+
+ gle::bindvbo(vbo);
+ const partvert *ptr = 0;
+ gle::vertexpointer(sizeof(partvert), ptr->pos.v);
+ gle::texcoord0pointer(sizeof(partvert), ptr->tc.v);
+ gle::colorpointer(sizeof(partvert), ptr->color.v);
+ gle::enablevertex();
+ gle::enabletexcoord0();
+ gle::enablecolor();
+ gle::enablequads();
+
+ gle::drawquads(0, numparts);
+
+ gle::disablequads();
+ gle::disablevertex();
+ gle::disabletexcoord0();
+ gle::disablecolor();
+ gle::clearvbo();
+ }
+};
+typedef varenderer<PT_PART> quadrenderer;
+typedef varenderer<PT_TAPE> taperenderer;
+typedef varenderer<PT_TRAIL> trailrenderer;
+
+#include "depthfx.h"
+#include "explosion.h"
+#include "lensflare.h"
+#include "lightning.h"
+
+struct softquadrenderer : quadrenderer
+{
+ softquadrenderer(const char *texname, int type, int collide = 0)
+ : quadrenderer(texname, type|PT_SOFT, collide)
+ {
+ }
+
+ int adddepthfx(vec &bbmin, vec &bbmax)
+ {
+ if(!depthfxtex.highprecision() && !depthfxtex.emulatehighprecision()) return 0;
+ int numsoft = 0;
+ loopi(numparts)
+ {
+ particle &p = parts[i];
+ float radius = p.size*SQRT2;
+ vec o, d;
+ int blend, ts;
+ calc(&p, blend, ts, o, d, false);
+ if(!isfoggedsphere(radius, p.o) && (depthfxscissor!=2 || depthfxtex.addscissorbox(p.o, radius)))
+ {
+ numsoft++;
+ loopk(3)
+ {
+ bbmin[k] = min(bbmin[k], o[k] - radius);
+ bbmax[k] = max(bbmax[k], o[k] + radius);
+ }
+ }
+ }
+ return numsoft;
+ }
+};
+
+static partrenderer *parts[] =
+{
+ new quadrenderer("<grey>packages/particles/blood.png", PT_PART|PT_FLIP|PT_MOD|PT_RND4, DECAL_BLOOD), // blood spats (note: rgb is inverted)
+ new trailrenderer("packages/particles/base.png", PT_TRAIL|PT_LERP), // water, entity
+ new quadrenderer("<grey>packages/particles/smoke.png", PT_PART|PT_FLIP|PT_LERP), // smoke
+ new quadrenderer("<grey>packages/particles/steam.png", PT_PART|PT_FLIP), // steam
+ new quadrenderer("<grey>packages/particles/flames.png", PT_PART|PT_HFLIP|PT_RND4|PT_GLARE), // flame on - no flipping please, they have orientation
+ new quadrenderer("packages/particles/ball1.png", PT_PART|PT_FEW|PT_GLARE), // fireball1
+ new quadrenderer("packages/particles/ball2.png", PT_PART|PT_FEW|PT_GLARE), // fireball2
+ new quadrenderer("packages/particles/ball3.png", PT_PART|PT_FEW|PT_GLARE), // fireball3
+ new taperenderer("packages/particles/flare.jpg", PT_TAPE|PT_GLARE), // streak
+ &lightnings, // lightning
+ &fireballs, // explosion fireball
+ &bluefireballs, // bluish explosion fireball
+ new quadrenderer("packages/particles/spark.png", PT_PART|PT_FLIP|PT_GLARE), // sparks
+ new quadrenderer("packages/particles/base.png", PT_PART|PT_FLIP|PT_GLARE), // edit mode entities
+ new quadrenderer("<grey>packages/particles/snow.png", PT_PART|PT_FLIP|PT_RND4, -1), // colliding snow
+ new quadrenderer("packages/particles/muzzleflash1.jpg", PT_PART|PT_FEW|PT_FLIP|PT_GLARE|PT_TRACK), // muzzle flash
+ new quadrenderer("packages/particles/muzzleflash2.jpg", PT_PART|PT_FEW|PT_FLIP|PT_GLARE|PT_TRACK), // muzzle flash
+ new quadrenderer("packages/particles/muzzleflash3.jpg", PT_PART|PT_FEW|PT_FLIP|PT_GLARE|PT_TRACK), // muzzle flash
+ new quadrenderer("packages/hud/items.png", PT_PART|PT_FEW|PT_ICON), // hud icon
+ new quadrenderer("<colorify:1/1/1>packages/hud/items.png", PT_PART|PT_FEW|PT_ICON), // grey hud icon
+ &texts, // text
+ &texticons, // text icons
+ &meters, // meter
+ &metervs, // meter vs.
+ &flares // lens flares - must be done last
+};
+
+void finddepthfxranges()
+{
+ depthfxmin = vec(1e16f, 1e16f, 1e16f);
+ depthfxmax = vec(0, 0, 0);
+ numdepthfxranges = fireballs.finddepthfxranges(depthfxowners, depthfxranges, 0, MAXDFXRANGES, depthfxmin, depthfxmax);
+ numdepthfxranges = bluefireballs.finddepthfxranges(depthfxowners, depthfxranges, numdepthfxranges, MAXDFXRANGES, depthfxmin, depthfxmax);
+ loopk(3)
+ {
+ depthfxmin[k] -= depthfxmargin;
+ depthfxmax[k] += depthfxmargin;
+ }
+ if(depthfxparts)
+ {
+ loopi(sizeof(parts)/sizeof(parts[0]))
+ {
+ partrenderer *p = parts[i];
+ if(p->type&PT_SOFT && p->adddepthfx(depthfxmin, depthfxmax))
+ {
+ if(!numdepthfxranges)
+ {
+ numdepthfxranges = 1;
+ depthfxowners[0] = NULL;
+ depthfxranges[0] = 0;
+ }
+ }
+ }
+ }
+ if(depthfxscissor<2 && numdepthfxranges>0) depthfxtex.addscissorbox(depthfxmin, depthfxmax);
+}
+
+VARFP(maxparticles, 10, 4000, 40000, initparticles());
+VARFP(fewparticles, 10, 100, 40000, initparticles());
+
+void initparticles()
+{
+ if(!particleshader) particleshader = lookupshaderbyname("particle");
+ if(!particlenotextureshader) particlenotextureshader = lookupshaderbyname("particlenotexture");
+ loopi(sizeof(parts)/sizeof(parts[0])) parts[i]->init(parts[i]->type&PT_FEW ? min(fewparticles, maxparticles) : maxparticles);
+}
+
+void clearparticles()
+{
+ loopi(sizeof(parts)/sizeof(parts[0])) parts[i]->reset();
+ clearparticleemitters();
+}
+
+void cleanupparticles()
+{
+ loopi(sizeof(parts)/sizeof(parts[0])) parts[i]->cleanup();
+}
+
+void removetrackedparticles(physent *owner)
+{
+ loopi(sizeof(parts)/sizeof(parts[0])) parts[i]->resettracked(owner);
+}
+
+VARP(particleglare, 0, 2, 100);
+
+VARN(debugparticles, dbgparts, 0, 0, 1);
+
+void debugparticles()
+{
+ if(!dbgparts) return;
+ int n = sizeof(parts)/sizeof(parts[0]);
+ pushhudmatrix();
+ hudmatrix.ortho(0, FONTH*n*2*screenw/float(screenh), FONTH*n*2, 0, -1, 1); //squeeze into top-left corner
+ flushhudmatrix();
+ hudshader->set();
+ loopi(n) draw_text(parts[i]->info, FONTH, (i+n/2)*FONTH);
+ pophudmatrix();
+}
+
+void renderparticles(bool mainpass)
+{
+ canstep = mainpass;
+ //want to debug BEFORE the lastpass render (that would delete particles)
+ if(dbgparts && mainpass) loopi(sizeof(parts)/sizeof(parts[0])) parts[i]->debuginfo();
+
+ if(glaring && !particleglare) return;
+
+ loopi(sizeof(parts)/sizeof(parts[0]))
+ {
+ if(glaring && !(parts[i]->type&PT_GLARE)) continue;
+ parts[i]->update();
+ }
+
+ bool rendered = false;
+ uint lastflags = PT_LERP|PT_SHADER,
+ flagmask = PT_LERP|PT_MOD|PT_SHADER|PT_NOTEX;
+
+ if(binddepthfxtex()) flagmask |= PT_SOFT;
+
+ loopi(sizeof(parts)/sizeof(parts[0]))
+ {
+ partrenderer *p = parts[i];
+ if(glaring && !(p->type&PT_GLARE)) continue;
+ if(!p->haswork()) continue;
+
+ if(!rendered)
+ {
+ rendered = true;
+ glDepthMask(GL_FALSE);
+ glEnable(GL_BLEND);
+ glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+
+ if(glaring) GLOBALPARAMF(colorscale, particleglare, particleglare, particleglare, 1);
+ else GLOBALPARAMF(colorscale, 1, 1, 1, 1);
+ }
+
+ uint flags = p->type & flagmask, changedbits = (flags ^ lastflags);
+ if(changedbits)
+ {
+ if(changedbits&PT_LERP)
+ {
+ if(flags&PT_LERP) resetfogcolor();
+ else zerofogcolor();
+ }
+ if(changedbits&(PT_LERP|PT_MOD))
+ {
+ if(flags&PT_LERP) glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+ else if(flags&PT_MOD) glBlendFunc(GL_ZERO, GL_ONE_MINUS_SRC_COLOR);
+ else glBlendFunc(GL_SRC_ALPHA, GL_ONE);
+ }
+ if(!(flags&PT_SHADER))
+ {
+ if(changedbits&(PT_SOFT|PT_SHADER|PT_NOTEX|PT_LERP))
+ {
+ if(flags&PT_SOFT)
+ {
+ if(!depthfxtex.highprecision()) SETSHADER(particlesoft8);
+ else SETSHADER(particlesoft);
+
+ binddepthfxparams(depthfxpartblend);
+ }
+ else if(flags&PT_NOTEX) particlenotextureshader->set();
+ else particleshader->set();
+ }
+ }
+ lastflags = flags;
+ }
+ p->render();
+ }
+
+ if(rendered)
+ {
+ if(lastflags&(PT_LERP|PT_MOD)) glBlendFunc(GL_SRC_ALPHA, GL_ONE);
+ if(!(lastflags&PT_LERP)) resetfogcolor();
+ glDisable(GL_BLEND);
+ glDepthMask(GL_TRUE);
+ }
+}
+
+static int addedparticles = 0;
+
+static inline particle *newparticle(const vec &o, const vec &d, int fade, int type, int color, float size, int gravity = 0)
+{
+ static particle dummy;
+ if(seedemitter)
+ {
+ parts[type]->seedemitter(*seedemitter, o, d, fade, size, gravity);
+ return &dummy;
+ }
+ if(fade + emitoffset < 0) return &dummy;
+ addedparticles++;
+ return parts[type]->addpart(o, d, fade, color, size, gravity);
+}
+
+VARP(maxparticledistance, 256, 1024, 4096);
+
+static void splash(int type, int color, int radius, int num, int fade, const vec &p, float size, int gravity)
+{
+ if(camera1->o.dist(p) > maxparticledistance && !seedemitter) return;
+ float collidez = parts[type]->collide ? p.z - raycube(p, vec(0, 0, -1), COLLIDERADIUS, RAY_CLIPMAT) + (parts[type]->collide >= 0 ? COLLIDEERROR : 0) : -1;
+ int fmin = 1;
+ int fmax = fade*3;
+ loopi(num)
+ {
+ int x, y, z;
+ do
+ {
+ x = rnd(radius*2)-radius;
+ y = rnd(radius*2)-radius;
+ z = rnd(radius*2)-radius;
+ }
+ while(x*x+y*y+z*z>radius*radius);
+ vec tmp = vec((float)x, (float)y, (float)z);
+ int f = (num < 10) ? (fmin + rnd(fmax)) : (fmax - (i*(fmax-fmin))/(num-1)); //help deallocater by using fade distribution rather than random
+ newparticle(p, tmp, f, type, color, size, gravity)->val = collidez;
+ }
+}
+
+static void regularsplash(int type, int color, int radius, int num, int fade, const vec &p, float size, int gravity, int delay = 0)
+{
+ if(!canemitparticles() || (delay > 0 && rnd(delay) != 0)) return;
+ splash(type, color, radius, num, fade, p, size, gravity);
+}
+
+bool canaddparticles()
+{
+ return !renderedgame && !shadowmapping && !minimized;
+}
+
+void regular_particle_splash(int type, int num, int fade, const vec &p, int color, float size, int radius, int gravity, int delay)
+{
+ if(!canaddparticles()) return;
+ regularsplash(type, color, radius, num, fade, p, size, gravity, delay);
+}
+
+void particle_splash(int type, int num, int fade, const vec &p, int color, float size, int radius, int gravity)
+{
+ if(!canaddparticles()) return;
+ splash(type, color, radius, num, fade, p, size, gravity);
+}
+
+VARP(maxtrail, 1, 500, 10000);
+
+void particle_trail(int type, int fade, const vec &s, const vec &e, int color, float size, int gravity)
+{
+ if(!canaddparticles()) return;
+ vec v;
+ float d = e.dist(s, v);
+ int steps = clamp(int(d*2), 1, maxtrail);
+ v.div(steps);
+ vec p = s;
+ loopi(steps)
+ {
+ p.add(v);
+ vec tmp = vec(float(rnd(11)-5), float(rnd(11)-5), float(rnd(11)-5));
+ newparticle(p, tmp, rnd(fade)+fade, type, color, size, gravity);
+ }
+}
+
+VARP(particletext, 0, 1, 1);
+VARP(maxparticletextdistance, 0, 128, 10000);
+
+void particle_text(const vec &s, const char *t, int type, int fade, int color, float size, int gravity, int icons)
+{
+ if(!canaddparticles()) return;
+ if(!particletext || camera1->o.dist(s) > maxparticletextdistance) return;
+ particle *p = newparticle(s, vec(0, 0, 1), fade, type, color, size, gravity);
+ p->text = t;
+ p->flags = icons<<1;
+}
+
+void particle_textcopy(const vec &s, const char *t, int type, int fade, int color, float size, int gravity)
+{
+ if(!canaddparticles()) return;
+ if(!particletext || camera1->o.dist(s) > maxparticletextdistance) return;
+ particle *p = newparticle(s, vec(0, 0, 1), fade, type, color, size, gravity);
+ p->text = newstring(t);
+ p->flags = 1;
+}
+
+void particle_texticon(const vec &s, int ix, int iy, float offset, int type, int fade, int color, float size, int gravity)
+{
+ if(!canaddparticles()) return;
+ if(!particletext || camera1->o.dist(s) > maxparticletextdistance) return;
+ particle *p = newparticle(s, vec(0, 0, 1), fade, type, color, size, gravity);
+ p->flags |= ix | (iy<<2);
+ p->val = offset;
+}
+
+void particle_icon(const vec &s, int ix, int iy, int type, int fade, int color, float size, int gravity)
+{
+ if(!canaddparticles()) return;
+ particle *p = newparticle(s, vec(0, 0, 1), fade, type, color, size, gravity);
+ p->flags |= ix | (iy<<2);
+}
+
+void particle_meter(const vec &s, float val, int type, int fade, int color, int color2, float size)
+{
+ if(!canaddparticles()) return;
+ particle *p = newparticle(s, vec(0, 0, 1), fade, type, color, size);
+ p->color2[0] = color2>>16;
+ p->color2[1] = (color2>>8)&0xFF;
+ p->color2[2] = color2&0xFF;
+ p->progress = clamp(int(val*100), 0, 100);
+}
+
+void particle_flare(const vec &p, const vec &dest, int fade, int type, int color, float size, physent *owner)
+{
+ if(!canaddparticles()) return;
+ newparticle(p, dest, fade, type, color, size)->owner = owner;
+}
+
+void particle_fireball(const vec &dest, float maxsize, int type, int fade, int color, float size)
+{
+ if(!canaddparticles()) return;
+ float growth = maxsize - size;
+ if(fade < 0) fade = int(growth*20);
+ newparticle(dest, vec(0, 0, 1), fade, type, color, size)->val = growth;
+}
+
+//dir = 0..6 where 0=up
+static inline vec offsetvec(vec o, int dir, int dist)
+{
+ vec v = vec(o);
+ v[(2+dir)%3] += (dir>2)?(-dist):dist;
+ return v;
+}
+
+//converts a 16bit color to 24bit
+static inline int colorfromattr(int attr)
+{
+ return (((attr&0xF)<<4) | ((attr&0xF0)<<8) | ((attr&0xF00)<<12)) + 0x0F0F0F;
+}
+
+/* Experiments in shapes...
+ * dir: (where dir%3 is similar to offsetvec with 0=up)
+ * 0..2 circle
+ * 3.. 5 cylinder shell
+ * 6..11 cone shell
+ * 12..14 plane volume
+ * 15..20 line volume, i.e. wall
+ * 21 sphere
+ * 24..26 flat plane
+ * +32 to inverse direction
+ */
+void regularshape(int type, int radius, int color, int dir, int num, int fade, const vec &p, float size, int gravity, int vel = 200)
+{
+ if(!canemitparticles()) return;
+
+ int basetype = parts[type]->type&0xFF;
+ bool flare = (basetype == PT_TAPE) || (basetype == PT_LIGHTNING),
+ inv = (dir&0x20)!=0, taper = (dir&0x40)!=0 && !seedemitter;
+ dir &= 0x1F;
+ loopi(num)
+ {
+ vec to, from;
+ if(dir < 12)
+ {
+ const vec2 &sc = sincos360[rnd(360)];
+ to[dir%3] = sc.y*radius;
+ to[(dir+1)%3] = sc.x*radius;
+ to[(dir+2)%3] = 0.0;
+ to.add(p);
+ if(dir < 3) //circle
+ from = p;
+ else if(dir < 6) //cylinder
+ {
+ from = to;
+ to[(dir+2)%3] += radius;
+ from[(dir+2)%3] -= radius;
+ }
+ else //cone
+ {
+ from = p;
+ to[(dir+2)%3] += (dir < 9)?radius:(-radius);
+ }
+ }
+ else if(dir < 15) //plane
+ {
+ to[dir%3] = float(rnd(radius<<4)-(radius<<3))/8.0;
+ to[(dir+1)%3] = float(rnd(radius<<4)-(radius<<3))/8.0;
+ to[(dir+2)%3] = radius;
+ to.add(p);
+ from = to;
+ from[(dir+2)%3] -= 2*radius;
+ }
+ else if(dir < 21) //line
+ {
+ if(dir < 18)
+ {
+ to[dir%3] = float(rnd(radius<<4)-(radius<<3))/8.0;
+ to[(dir+1)%3] = 0.0;
+ }
+ else
+ {
+ to[dir%3] = 0.0;
+ to[(dir+1)%3] = float(rnd(radius<<4)-(radius<<3))/8.0;
+ }
+ to[(dir+2)%3] = 0.0;
+ to.add(p);
+ from = to;
+ to[(dir+2)%3] += radius;
+ }
+ else if(dir < 24) //sphere
+ {
+ to = vec(2*M_PI*float(rnd(1000))/1000.0, M_PI*float(rnd(1000)-500)/1000.0).mul(radius);
+ to.add(p);
+ from = p;
+ }
+ else if(dir < 27) // flat plane
+ {
+ to[dir%3] = float(rndscale(2*radius)-radius);
+ to[(dir+1)%3] = float(rndscale(2*radius)-radius);
+ to[(dir+2)%3] = 0.0;
+ to.add(p);
+ from = to;
+ }
+ else from = to = p;
+
+ if(inv) swap(from, to);
+
+ if(taper)
+ {
+ float dist = clamp(from.dist2(camera1->o)/maxparticledistance, 0.0f, 1.0f);
+ if(dist > 0.2f)
+ {
+ dist = 1 - (dist - 0.2f)/0.8f;
+ if(rnd(0x10000) > dist*dist*0xFFFF) continue;
+ }
+ }
+
+ if(flare)
+ newparticle(from, to, rnd(fade*3)+1, type, color, size, gravity);
+ else
+ {
+ vec d = vec(to).sub(from).rescale(vel); //velocity
+ particle *n = newparticle(from, d, rnd(fade*3)+1, type, color, size, gravity);
+ if(parts[type]->collide)
+ n->val = from.z - raycube(from, vec(0, 0, -1), parts[type]->collide >= 0 ? COLLIDERADIUS : max(from.z, 0.0f), RAY_CLIPMAT) + (parts[type]->collide >= 0 ? COLLIDEERROR : 0);
+ }
+ }
+}
+
+static void regularflame(int type, const vec &p, float radius, float height, int color, int density = 3, float scale = 2.0f, float speed = 200.0f, float fade = 600.0f, int gravity = -15)
+{
+ if(!canemitparticles()) return;
+
+ float size = scale * min(radius, height);
+ vec v(0, 0, min(1.0f, height)*speed);
+ loopi(density)
+ {
+ vec s = p;
+ s.x += rndscale(radius*2.0f)-radius;
+ s.y += rndscale(radius*2.0f)-radius;
+ newparticle(s, v, rnd(max(int(fade*height), 1))+1, type, color, size, gravity);
+ }
+}
+
+void regular_particle_flame(int type, const vec &p, float radius, float height, int color, int density, float scale, float speed, float fade, int gravity)
+{
+ if(!canaddparticles()) return;
+ regularflame(type, p, radius, height, color, density, scale, speed, fade, gravity);
+}
+
+static void makeparticles(entity &e)
+{
+ switch(e.attr1)
+ {
+ case 0: //fire and smoke - <radius> <height> <rgb> - 0 values default to compat for old maps
+ {
+ //regularsplash(PART_FIREBALL1, 0xFFC8C8, 150, 1, 40, e.o, 4.8f);
+ //regularsplash(PART_SMOKE, 0x897661, 50, 1, 200, vec(e.o.x, e.o.y, e.o.z+3.0f), 2.4f, -20, 3);
+ float radius = e.attr2 ? float(e.attr2)/100.0f : 1.5f,
+ height = e.attr3 ? float(e.attr3)/100.0f : radius/3;
+ regularflame(PART_FLAME, e.o, radius, height, e.attr4 ? colorfromattr(e.attr4) : 0x903020, 3, 2.0f);
+ regularflame(PART_SMOKE, vec(e.o.x, e.o.y, e.o.z + 4.0f*min(radius, height)), radius, height, 0x303020, 1, 4.0f, 100.0f, 2000.0f, -20);
+ break;
+ }
+ case 1: //steam vent - <dir>
+ regularsplash(PART_STEAM, 0x897661, 50, 1, 200, offsetvec(e.o, e.attr2, rnd(10)), 2.4f, -20);
+ break;
+ case 2: //water fountain - <dir>
+ {
+ int color;
+ if(e.attr3 > 0) color = colorfromattr(e.attr3);
+ else
+ {
+ int mat = MAT_WATER + clamp(-e.attr3, 0, 3);
+ const bvec &wfcol = getwaterfallcolor(mat);
+ color = (int(wfcol[0])<<16) | (int(wfcol[1])<<8) | int(wfcol[2]);
+ if(!color)
+ {
+ const bvec &wcol = getwatercolor(mat);
+ color = (int(wcol[0])<<16) | (int(wcol[1])<<8) | int(wcol[2]);
+ }
+ }
+ regularsplash(PART_WATER, color, 150, 4, 200, offsetvec(e.o, e.attr2, rnd(10)), 0.6f, 2);
+ break;
+ }
+ case 3: //fire ball - <size> <rgb>
+ newparticle(e.o, vec(0, 0, 1), 1, PART_EXPLOSION, colorfromattr(e.attr3), 4.0f)->val = 1+e.attr2;
+ break;
+ case 4: //tape - <dir> <length> <rgb>
+ case 7: //lightning
+ case 9: //steam
+ case 10: //water
+ case 13: //snow
+ {
+ static const int typemap[] = { PART_STREAK, -1, -1, PART_LIGHTNING, -1, PART_STEAM, PART_WATER, -1, -1, PART_SNOW };
+ static const float sizemap[] = { 0.28f, 0.0f, 0.0f, 1.0f, 0.0f, 2.4f, 0.60f, 0.0f, 0.0f, 0.5f };
+ static const int gravmap[] = { 0, 0, 0, 0, 0, -20, 2, 0, 0, 20 };
+ int type = typemap[e.attr1-4];
+ float size = sizemap[e.attr1-4];
+ int gravity = gravmap[e.attr1-4];
+ if(e.attr2 >= 256) regularshape(type, max(1+e.attr3, 1), colorfromattr(e.attr4), e.attr2-256, 5, e.attr5 > 0 ? min(int(e.attr5), 10000) : 200, e.o, size, gravity);
+ else newparticle(e.o, offsetvec(e.o, e.attr2, max(1+e.attr3, 0)), 1, type, colorfromattr(e.attr4), size, gravity);
+ break;
+ }
+ case 5: //meter, metervs - <percent> <rgb> <rgb2>
+ case 6:
+ {
+ particle *p = newparticle(e.o, vec(0, 0, 1), 1, e.attr1==5 ? PART_METER : PART_METER_VS, colorfromattr(e.attr3), 2.0f);
+ int color2 = colorfromattr(e.attr4);
+ p->color2[0] = color2>>16;
+ p->color2[1] = (color2>>8)&0xFF;
+ p->color2[2] = color2&0xFF;
+ p->progress = clamp(int(e.attr2), 0, 100);
+ break;
+ }
+ case 11: // flame <radius> <height> <rgb> - radius=100, height=100 is the classic size
+ regularflame(PART_FLAME, e.o, float(e.attr2)/100.0f, float(e.attr3)/100.0f, colorfromattr(e.attr4), 3, 2.0f);
+ break;
+ case 12: // smoke plume <radius> <height> <rgb>
+ regularflame(PART_SMOKE, e.o, float(e.attr2)/100.0f, float(e.attr3)/100.0f, colorfromattr(e.attr4), 1, 4.0f, 100.0f, 2000.0f, -20);
+ break;
+ case 32: //lens flares - plain/sparkle/sun/sparklesun <red> <green> <blue>
+ case 33:
+ case 34:
+ case 35:
+ flares.addflare(e.o, e.attr2, e.attr3, e.attr4, (e.attr1&0x02)!=0, (e.attr1&0x01)!=0);
+ break;
+ default:
+ if(!editmode)
+ {
+ defformatstring(ds, "particles %d?", e.attr1);
+ particle_textcopy(e.o, ds, PART_TEXT, 1, 0x6496FF, 2.0f);
+ }
+ break;
+ }
+}
+
+bool printparticles(extentity &e, char *buf, int len)
+{
+ switch(e.attr1)
+ {
+ case 0: case 4: case 7: case 8: case 9: case 10: case 11: case 12: case 13:
+ nformatstring(buf, len, "%s %d %d %d 0x%.3hX %d", entities::entname(e.type), e.attr1, e.attr2, e.attr3, e.attr4, e.attr5);
+ return true;
+ case 3:
+ nformatstring(buf, len, "%s %d %d 0x%.3hX %d %d", entities::entname(e.type), e.attr1, e.attr2, e.attr3, e.attr4, e.attr5);
+ return true;
+ case 5: case 6:
+ nformatstring(buf, len, "%s %d %d 0x%.3hX 0x%.3hX %d", entities::entname(e.type), e.attr1, e.attr2, e.attr3, e.attr4, e.attr5);
+ return true;
+ }
+ return false;
+}
+
+void seedparticles()
+{
+ renderprogress(0, "seeding particles");
+ addparticleemitters();
+ canemit = true;
+ loopv(emitters)
+ {
+ particleemitter &pe = emitters[i];
+ extentity &e = *pe.ent;
+ seedemitter = &pe;
+ for(int millis = 0; millis < seedmillis; millis += min(emitmillis, seedmillis/10))
+ makeparticles(e);
+ seedemitter = NULL;
+ pe.lastemit = -seedmillis;
+ pe.finalize();
+ }
+}
+
+void updateparticles()
+{
+ if(regenemitters) addparticleemitters();
+
+ if(minimized) { canemit = false; return; }
+
+ if(lastmillis - lastemitframe >= emitmillis)
+ {
+ canemit = true;
+ lastemitframe = lastmillis - (lastmillis%emitmillis);
+ }
+ else canemit = false;
+
+ flares.makelightflares();
+
+ if(!editmode || showparticles)
+ {
+ int emitted = 0, replayed = 0;
+ addedparticles = 0;
+ loopv(emitters)
+ {
+ particleemitter &pe = emitters[i];
+ extentity &e = *pe.ent;
+ if(e.o.dist(camera1->o) > maxparticledistance) { pe.lastemit = lastmillis; continue; }
+ if(cullparticles && pe.maxfade >= 0)
+ {
+ if(isfoggedsphere(pe.radius, pe.center)) { pe.lastcull = lastmillis; continue; }
+ if(pvsoccluded(pe.cullmin, pe.cullmax)) { pe.lastcull = lastmillis; continue; }
+ }
+ makeparticles(e);
+ emitted++;
+ if(replayparticles && pe.maxfade > 5 && pe.lastcull > pe.lastemit)
+ {
+ for(emitoffset = max(pe.lastemit + emitmillis - lastmillis, -pe.maxfade); emitoffset < 0; emitoffset += emitmillis)
+ {
+ makeparticles(e);
+ replayed++;
+ }
+ emitoffset = 0;
+ }
+ pe.lastemit = lastmillis;
+ }
+ if(dbgpcull && (canemit || replayed) && addedparticles) conoutf(CON_DEBUG, "%d emitters, %d particles", emitted, addedparticles);
+ }
+ if(editmode) // show sparkly thingies for map entities in edit mode
+ {
+ const vector<extentity *> &ents = entities::getents();
+ // note: order matters in this case as particles of the same type are drawn in the reverse order that they are added
+ loopv(entgroup)
+ {
+ entity &e = *ents[entgroup[i]];
+ particle_textcopy(e.o, entname(e), PART_TEXT, 1, 0xFF4B19, 2.0f);
+ }
+ loopv(ents)
+ {
+ entity &e = *ents[i];
+ if(e.type==ET_EMPTY) continue;
+ particle_textcopy(e.o, entname(e), PART_TEXT, 1, 0x1EC850, 2.0f);
+ regular_particle_splash(PART_EDIT, 2, 40, e.o, 0x3232FF, 0.32f*particlesize/100.0f);
+ }
+ }
+}
generated by cgit v1.2.3 (git 2.46.0) at 2026-02-21 09:03:27 +0000