Initial

1 files changed, 332 insertions, 0 deletions

diff --git a/elements/pipe.cpp b/elements/pipe.cpp
new file mode 100644
index 0000000..08432f5
--- /dev/null
+++ b/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;
+}