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-rw-r--r--src/elements/pipe.cpp332
1 files changed, 332 insertions, 0 deletions
diff --git a/src/elements/pipe.cpp b/src/elements/pipe.cpp
new file mode 100644
index 0000000..08432f5
--- /dev/null
+++ b/src/elements/pipe.cpp
@@ -0,0 +1,332 @@
+#include "element.h"
+
+signed char pos_1_rx[] = {-1,-1,-1, 0, 0, 1, 1, 1};
+signed char pos_1_ry[] = {-1, 0, 1,-1, 1,-1, 0, 1};
+
+void pushParticle(Simulation * sim, int i, int count, int original)
+{
+ int rndstore, rnd, rx, ry, r, x, y, np, q, notctype=(((sim->parts[i].ctype)%3)+2);
+ if ((sim->parts[i].tmp&0xFF) == 0 || count >= 2)//don't push if there is nothing there, max speed of 2 per frame
+ return;
+ x = (int)(sim->parts[i].x+0.5f);
+ y = (int)(sim->parts[i].y+0.5f);
+ if( !(sim->parts[i].tmp&0x200) )
+ {
+ //normal random push
+ rndstore = rand();
+ // RAND_MAX is at least 32767 on all platforms i.e. pow(8,5)-1
+ // so can go 5 cycles without regenerating rndstore
+ for (q=0; q<3; q++)//try to push twice
+ {
+ rnd = rndstore&7;
+ rndstore = rndstore>>3;
+ rx = pos_1_rx[rnd];
+ ry = pos_1_ry[rnd];
+ if (x+rx>=0 && y+ry>=0 && x+rx<XRES && y+ry<YRES)
+ {
+ r = sim->pmap[y+ry][x+rx];
+ if (!r)
+ continue;
+ else if ((r&0xFF)==PT_PIPE && sim->parts[r>>8].ctype!=notctype && (sim->parts[r>>8].tmp&0xFF)==0)
+ {
+ sim->parts[r>>8].tmp = (sim->parts[r>>8].tmp&~0xFF) | (sim->parts[i].tmp&0xFF);
+ sim->parts[r>>8].temp = sim->parts[i].temp;
+ sim->parts[r>>8].flags = sim->parts[i].flags;
+ sim->parts[r>>8].pavg[0] = sim->parts[i].pavg[0];
+ sim->parts[r>>8].pavg[1] = sim->parts[i].pavg[1];
+ if (r>>8 > original)
+ sim->parts[r>>8].tmp2 = 1;//skip particle push, normalizes speed
+ sim->parts[i].tmp &= ~0xFF;
+ count++;
+ pushParticle(sim, r>>8,count,original);
+ }
+ }
+ }
+ }
+ else //predefined 1 pixel thick pipe movement
+ {
+ int coords = 7 - ((sim->parts[i].tmp>>10)&7);
+ r = sim->pmap[y+ pos_1_ry[coords]][x+ pos_1_rx[coords]];
+ if (!r)
+ {
+ }
+ else if ((r&0xFF)==PT_PIPE && sim->parts[r>>8].ctype!=notctype && (sim->parts[r>>8].tmp&0xFF)==0)
+ {
+ sim->parts[r>>8].tmp = (sim->parts[r>>8].tmp&~0xFF) | (sim->parts[i].tmp&0xFF);
+ sim->parts[r>>8].temp = sim->parts[i].temp;
+ sim->parts[r>>8].flags = sim->parts[i].flags;
+ sim->parts[r>>8].pavg[0] = sim->parts[i].pavg[0];
+ sim->parts[r>>8].pavg[1] = sim->parts[i].pavg[1];
+ if (r>>8 > original)
+ sim->parts[r>>8].tmp2 = 1;//skip particle push, normalizes speed
+ sim->parts[i].tmp &= ~0xFF;
+ count++;
+ pushParticle(sim, r>>8,count,original);
+ }
+
+
+ }
+ return;
+}
+
+int update_PIPE(UPDATE_FUNC_ARGS) {
+ int r, rx, ry, np;
+ int rnd, rndstore;
+ if (parts[i].ctype>=2 && parts[i].ctype<=4)
+ {
+ if (parts[i].life==3)
+ {
+ int lastneighbor = -1;
+ int neighborcount = 0;
+ int count = 0;
+ // make automatic pipe pattern
+ for (rx=-1; rx<2; rx++)
+ for (ry=-1; ry<2; ry++)
+ if (x+rx>=0 && y+ry>0 && x+rx<XRES && y+ry<YRES && (rx || ry))
+ {
+ r = pmap[y+ry][x+rx];
+ if (!r)
+ continue;
+ if ((r&0xFF)==PT_PIPE&&parts[r>>8].ctype==1)
+ {
+ parts[r>>8].ctype = (((parts[i].ctype)%3)+2);//reverse
+ parts[r>>8].life = 6;
+ if ( parts[i].tmp&0x100)//is a single pixel pipe
+ {
+ parts[r>>8].tmp |= 0x200;//will transfer to a single pixel pipe
+ parts[r>>8].tmp |= count<<10;//coords of where it came from
+ }
+ neighborcount ++;
+ lastneighbor = r>>8;
+ }
+ else if ((r&0xFF)==PT_PIPE&&parts[r>>8].ctype!=(((parts[i].ctype-1)%3)+2))
+ {
+ neighborcount ++;
+ lastneighbor = r>>8;
+ }
+ count++;
+ }
+ if(neighborcount == 1)
+ parts[lastneighbor].tmp |= 0x100;
+ }
+ else
+ {
+ if (parts[i].tmp2 == 1)//skip particle push to prevent particle number being higher causeing speed up
+ {
+ parts[i].tmp2 = 0 ;
+ }
+ else
+ {
+ pushParticle(sim, i,0,i);
+ }
+
+ if (nt)//there is something besides PIPE around current particle
+ {
+ rndstore = rand();
+ rnd = rndstore&7;
+ rndstore = rndstore>>3;
+ rx = pos_1_rx[rnd];
+ ry = pos_1_ry[rnd];
+ if (x+rx>=0 && y+ry>=0 && x+rx<XRES && y+ry<YRES)
+ {
+ r = pmap[y+ry][x+rx];
+ if(!r)
+ r = sim->photons[y+ry][x+rx];
+ if (surround_space && !r && (parts[i].tmp&0xFF)!=0) //creating at end
+ {
+ np = sim->create_part(-1,x+rx,y+ry,parts[i].tmp&0xFF);
+ if (np!=-1)
+ {
+ parts[np].temp = parts[i].temp;//pipe saves temp and life now
+ parts[np].life = parts[i].flags;
+ parts[np].tmp = parts[i].pavg[0];
+ parts[np].ctype = parts[i].pavg[1];
+ parts[i].tmp &= ~0xFF;
+ }
+ }
+ //try eating particle at entrance
+ else if ((parts[i].tmp&0xFF) == 0 && (sim->ptypes[r&0xFF].falldown!= 0 || sim->ptypes[r&0xFF].state == ST_GAS))
+ {
+ if ((r&0xFF)==PT_SOAP)
+ sim->detach(r>>8);
+ parts[i].tmp = (parts[i].tmp&~0xFF) | parts[r>>8].type;
+ parts[i].temp = parts[r>>8].temp;
+ parts[i].flags = parts[r>>8].life;
+ parts[i].pavg[0] = parts[r>>8].tmp;
+ parts[i].pavg[1] = parts[r>>8].ctype;
+ sim->kill_part(r>>8);
+ }
+ else if ((parts[i].tmp&0xFF) == 0 && (r&0xFF)==PT_STOR && parts[r>>8].tmp && (sim->ptypes[parts[r>>8].tmp].falldown!= 0 || sim->ptypes[parts[r>>8].tmp].state == ST_GAS))
+ {
+ parts[i].tmp = parts[r>>8].tmp;
+ parts[i].temp = parts[r>>8].temp;
+ parts[i].flags = parts[r>>8].flags;
+ parts[i].pavg[0] = parts[r>>8].pavg[0];
+ parts[i].pavg[1] = parts[r>>8].pavg[1];
+ parts[r>>8].tmp = 0;
+ parts[r>>8].life = 0;
+ }
+ }
+ }
+ }
+ }
+ else if (!parts[i].ctype && parts[i].life<=10)
+ {
+ if (parts[i].temp<272.15)//manual pipe colors
+ {
+ if (parts[i].temp>173.25&&parts[i].temp<273.15)
+ {
+ parts[i].ctype = 2;
+ parts[i].life = 0;
+ }
+ if (parts[i].temp>73.25&&parts[i].temp<=173.15)
+ {
+ parts[i].ctype = 3;
+ parts[i].life = 0;
+ }
+ if (parts[i].temp>=0&&parts[i].temp<=73.15)
+ {
+ parts[i].ctype = 4;
+ parts[i].life = 0;
+ }
+ }
+ else
+ {
+ // make a border
+ for (rx=-2; rx<3; rx++)
+ for (ry=-2; ry<3; ry++)
+ {
+ if (x+rx>=0 && y+ry>0 && x+rx<XRES && y+ry<YRES && (rx || ry))
+ {
+ r = pmap[y+ry][x+rx];
+ if (!r)
+ sim->create_part(-1,x+rx,y+ry,PT_BRCK);//BRCK border, people didn't like DMND
+ }
+ }
+ if (parts[i].life<=1)
+ parts[i].ctype = 1;
+ }
+ }
+ else if (parts[i].ctype==1)//wait for empty space before starting to generate automatic pipe pattern
+ {
+ if (!parts[i].life)
+ {
+ for (rx=-1; rx<2; rx++)
+ for (ry=-1; ry<2; ry++)
+ if (x+rx>=0 && y+ry>0 && x+rx<XRES && y+ry<YRES && (rx || ry))
+ {
+ if (!pmap[y+ry][x+rx])
+ parts[i].life=50;
+ }
+ }
+ else if (parts[i].life==5)//check for beginning of pipe single pixel
+ {
+ int issingle = 1;
+ for (rx=-1; rx<2; rx++)
+ for (ry=-1; ry<2; ry++)
+ if (x+rx>=0 && y+ry>0 && x+rx<XRES && y+ry<YRES && (rx || ry))
+ {
+ r = pmap[y+ry][x+rx];
+ if ((r&0xFF)==PT_PIPE && parts[i].ctype==1 && parts[i].life )
+ issingle = 0;
+ }
+ if (issingle)
+ parts[i].tmp |= 0x100;
+ }
+ else if (parts[i].life==2)
+ {
+ parts[i].ctype = 2;
+ parts[i].life = 6;
+ }
+ }
+ return 0;
+}
+
+int graphics_PIPE(GRAPHICS_FUNC_ARGS)
+{
+
+ if ((cpart->tmp&0xFF)>0 && (cpart->tmp&0xFF)<PT_NUM)
+ {
+ //Create a temp. particle and do a subcall.
+ Particle tpart;
+ int t;
+ memset(&tpart, 0, sizeof(Particle));
+ tpart.type = cpart->tmp&0xFF;
+ tpart.temp = cpart->temp;
+ tpart.life = cpart->flags;
+ tpart.tmp = cpart->pavg[0];
+ tpart.ctype = cpart->pavg[1];
+ t = tpart.type;
+ if (ren->graphicscache[t].isready)
+ {
+ *pixel_mode = ren->graphicscache[t].pixel_mode;
+ *colr = ren->graphicscache[t].colr;
+ *colg = ren->graphicscache[t].colg;
+ *colb = ren->graphicscache[t].colb;
+ *firea = ren->graphicscache[t].firea;
+ *firer = ren->graphicscache[t].firer;
+ *fireg = ren->graphicscache[t].fireg;
+ *fireb = ren->graphicscache[t].fireb;
+ }
+ else
+ {
+ *colr = PIXR(ren->sim->ptypes[t].pcolors);
+ *colg = PIXR(ren->sim->ptypes[t].pcolors);
+ *colb = PIXR(ren->sim->ptypes[t].pcolors);
+ if (ren->sim->ptypes[t].graphics_func)
+ {
+ (*(ren->sim->ptypes[t].graphics_func))(ren, &tpart, nx, ny, pixel_mode, cola, colr, colg, colb, firea, firer, fireg, fireb);
+ }
+ else
+ {
+ graphics_DEFAULT(ren, &tpart, nx, ny, pixel_mode, cola, colr, colg, colb, firea, firer, fireg, fireb);
+ }
+ }
+ //*colr = PIXR(ptypes[cpart->tmp&0xFF].pcolors);
+ //*colg = PIXG(ptypes[cpart->tmp&0xFF].pcolors);
+ //*colb = PIXB(ptypes[cpart->tmp&0xFF].pcolors);
+ }
+ else
+ {
+ if (cpart->ctype==2)
+ {
+ *colr = 50;
+ *colg = 1;
+ *colb = 1;
+ }
+ else if (cpart->ctype==3)
+ {
+ *colr = 1;
+ *colg = 50;
+ *colb = 1;
+ }
+ else if (cpart->ctype==4)
+ {
+ *colr = 1;
+ *colg = 1;
+ *colb = 50;
+ }
+ else if (cpart->temp<272.15&&cpart->ctype!=1)
+ {
+ if (cpart->temp>173.25&&cpart->temp<273.15)
+ {
+ *colr = 50;
+ *colg = 1;
+ *colb = 1;
+ }
+ if (cpart->temp>73.25&&cpart->temp<=173.15)
+ {
+ *colr = 1;
+ *colg = 50;
+ *colb = 1;
+ }
+ if (cpart->temp>=0&&cpart->temp<=73.15)
+ {
+ *colr = 1;
+ *colg = 1;
+ *colb = 50;
+ }
+ }
+ }
+ return 0;
+}