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-rw-r--r--src/engine/lightning.h123
1 files changed, 0 insertions, 123 deletions
diff --git a/src/engine/lightning.h b/src/engine/lightning.h
deleted file mode 100644
index cec993a..0000000
--- a/src/engine/lightning.h
+++ /dev/null
@@ -1,123 +0,0 @@
-#define MAXLIGHTNINGSTEPS 64
-#define LIGHTNINGSTEP 8
-int lnjitterx[2][MAXLIGHTNINGSTEPS], lnjittery[2][MAXLIGHTNINGSTEPS];
-int lnjitterframe = 0, lastlnjitter = 0;
-
-VAR(lnjittermillis, 0, 100, 1000);
-VAR(lnjitterradius, 0, 4, 100);
-FVAR(lnjitterscale, 0, 0.5f, 10);
-VAR(lnscrollmillis, 1, 300, 5000);
-FVAR(lnscrollscale, 0, 0.125f, 10);
-FVAR(lnblendpower, 0, 0.25f, 1000);
-
-static void calclightningjitter(int frame)
-{
- loopi(MAXLIGHTNINGSTEPS)
- {
- lnjitterx[lnjitterframe][i] = -lnjitterradius + rnd(2*lnjitterradius + 1);
- lnjittery[lnjitterframe][i] = -lnjitterradius + rnd(2*lnjitterradius + 1);
- }
-}
-
-static void setuplightning()
-{
- if(!lastlnjitter || lastmillis-lastlnjitter > lnjittermillis)
- {
- if(!lastlnjitter) calclightningjitter(lnjitterframe);
- lastlnjitter = lastmillis - (lastmillis%lnjittermillis);
- calclightningjitter(lnjitterframe ^= 1);
- }
-}
-
-static void renderlightning(Texture *tex, const vec &o, const vec &d, float sz)
-{
- vec step(d);
- step.sub(o);
- float len = step.magnitude();
- int numsteps = clamp(int(ceil(len/LIGHTNINGSTEP)), 2, MAXLIGHTNINGSTEPS);
- step.div(numsteps+1);
- int jitteroffset = detrnd(int(d.x+d.y+d.z), MAXLIGHTNINGSTEPS);
- vec cur(o), up, right;
- up.orthogonal(step);
- up.normalize();
- right.cross(up, step);
- right.normalize();
- float scroll = -float(lastmillis%lnscrollmillis)/lnscrollmillis,
- scrollscale = lnscrollscale*(LIGHTNINGSTEP*tex->ys)/(sz*tex->xs),
- blend = pow(clamp(float(lastmillis - lastlnjitter)/lnjittermillis, 0.0f, 1.0f), lnblendpower),
- jitter0 = (1-blend)*lnjitterscale*sz/lnjitterradius, jitter1 = blend*lnjitterscale*sz/lnjitterradius;
- gle::begin(GL_TRIANGLE_STRIP);
- loopj(numsteps)
- {
- vec next(cur);
- next.add(step);
- if(j+1==numsteps) next = d;
- else
- {
- int lj = (j+jitteroffset)%MAXLIGHTNINGSTEPS;
- next.add(vec(right).mul((jitter1*lnjitterx[lnjitterframe][lj] + jitter0*lnjitterx[lnjitterframe^1][lj])));
- next.add(vec(up).mul((jitter1*lnjittery[lnjitterframe][lj] + jitter0*lnjittery[lnjitterframe^1][lj])));
- }
- vec dir1 = next, dir2 = next, across;
- dir1.sub(cur);
- dir2.sub(camera1->o);
- across.cross(dir2, dir1).normalize().mul(sz);
- gle::attribf(cur.x-across.x, cur.y-across.y, cur.z-across.z);
- gle::attribf(scroll, 1);
- gle::attribf(cur.x+across.x, cur.y+across.y, cur.z+across.z);
- gle::attribf(scroll, 0);
- scroll += scrollscale;
- if(j+1==numsteps)
- {
- gle::attribf(next.x-across.x, next.y-across.y, next.z-across.z);
- gle::attribf(scroll, 1);
- gle::attribf(next.x+across.x, next.y+across.y, next.z+across.z);
- gle::attribf(scroll, 0);
- }
- cur = next;
- }
- gle::end();
-}
-
-struct lightningrenderer : listrenderer
-{
- lightningrenderer()
- : listrenderer("packages/particles/lightning.png", 2, PT_LIGHTNING|PT_TRACK|PT_GLARE)
- {}
-
- void startrender()
- {
- glDisable(GL_CULL_FACE);
- gle::defattrib(gle::ATTRIB_VERTEX, 3, GL_FLOAT);
- gle::defattrib(gle::ATTRIB_TEXCOORD0, 2, GL_FLOAT);
- }
-
- void endrender()
- {
- glEnable(GL_CULL_FACE);
- }
-
- void update()
- {
- setuplightning();
- }
-
- void seedemitter(particleemitter &pe, const vec &o, const vec &d, int fade, float size, int gravity)
- {
- pe.maxfade = max(pe.maxfade, fade);
- pe.extendbb(o, size);
- pe.extendbb(d, size);
- }
-
- void renderpart(listparticle *p, const vec &o, const vec &d, int blend, int ts)
- {
- blend = min(blend<<2, 255);
- if(type&PT_MOD) //multiply alpha into color
- gle::colorub((p->color.r*blend)>>8, (p->color.g*blend)>>8, (p->color.b*blend)>>8);
- else
- gle::color(p->color, blend);
- renderlightning(tex, o, d, p->size);
- }
-};
-static lightningrenderer lightnings;
-