Some minor changes

1 files changed, 104 insertions, 0 deletions

diff --git a/src/elements/sing.cpp b/src/elements/sing.cpp
new file mode 100644
index 0000000..fa6121c
--- /dev/null
+++ b/src/elements/sing.cpp
@@ -0,0 +1,104 @@
+#include "element.h"
+
+int update_SING(UPDATE_FUNC_ARGS) {
+	int r, rx, ry, cry, crx, rad, nxi, nxj, nb, j, spawncount;
+	int singularity = -parts[i].life;
+	float angle, v;
+
+	if (sim->pv[y/CELL][x/CELL]<singularity)
+		sim->pv[y/CELL][x/CELL] += 0.1f*(singularity-sim->pv[y/CELL][x/CELL]);
+	if (y+CELL<YRES && sim->pv[y/CELL+1][x/CELL]<singularity)
+		sim->pv[y/CELL+1][x/CELL] += 0.1f*(singularity-sim->pv[y/CELL+1][x/CELL]);
+	if (x+CELL<XRES)
+	{
+		sim->pv[y/CELL][x/CELL+1] += 0.1f*(singularity-sim->pv[y/CELL][x/CELL+1]);
+		if (y+CELL<YRES)
+			sim->pv[y/CELL+1][x/CELL+1] += 0.1f*(singularity-sim->pv[y/CELL+1][x/CELL+1]);
+	}
+	if (y+CELL>0 && sim->pv[y/CELL-1][x/CELL]<singularity)
+		sim->pv[y/CELL-1][x/CELL] += 0.1f*(singularity-sim->pv[y/CELL-1][x/CELL]);
+	if (x+CELL>0)
+	{
+		sim->pv[y/CELL][x/CELL-1] += 0.1f*(singularity-sim->pv[y/CELL][x/CELL-1]);
+		if (y+CELL>0)
+			sim->pv[y/CELL-1][x/CELL-1] += 0.1f*(singularity-sim->pv[y/CELL-1][x/CELL-1]);
+	}
+	if (parts[i].life<1) {
+		//Pop!
+		for (rx=-2; rx<3; rx++) {
+			crx = (x/CELL)+rx;
+			for (ry=-2; ry<3; ry++) {
+				cry = (y/CELL)+ry;
+				if (cry > 0 && crx > 0 && crx < (XRES/CELL) && cry < (YRES/CELL)) {
+					sim->pv[cry][crx] += (float)parts[i].tmp;
+				}
+			}
+		}
+		spawncount = (parts[i].tmp>255)?255:parts[i].tmp;
+		if (spawncount>=1)
+			spawncount = spawncount/8;
+		spawncount = spawncount*spawncount*M_PI;
+		for (j=0;j<spawncount;j++)
+		{
+			switch(rand()%3)
+			{
+				case 0:
+					nb = sim->create_part(-3, x, y, PT_PHOT);
+					break;
+				case 1:
+					nb = sim->create_part(-3, x, y, PT_NEUT);
+					break;
+				case 2:
+					nb = sim->create_part(-3, x, y, PT_ELEC);
+					break;
+			}
+			if (nb!=-1) {
+				parts[nb].life = (rand()%300);
+				parts[nb].temp = MAX_TEMP/2;
+				angle = rand()*2.0f*M_PI/RAND_MAX;
+				v = (float)(rand())*5.0f/RAND_MAX;
+				parts[nb].vx = v*cosf(angle);
+				parts[nb].vy = v*sinf(angle);
+			}
+			else if (sim->pfree==-1)
+				break;//if we've run out of particles, stop trying to create them - saves a lot of lag on "sing bomb" saves
+		}
+		sim->kill_part(i);
+		return 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)
+					continue;
+				if ((r&0xFF)!=PT_DMND&&33>=rand()/(RAND_MAX/100)+1)
+				{
+					if ((r&0xFF)==PT_SING && parts[r>>8].life >10)
+					{
+						if (parts[i].life+parts[r>>8].life > 255)
+							continue;
+						parts[i].life += parts[r>>8].life;
+					}
+					else
+					{
+						if (parts[i].life+3 > 255)
+						{
+							if (parts[r>>8].type!=PT_SING && 1>rand()%100)
+							{
+								int np;
+								np = sim->create_part(r>>8,x+rx,y+ry,PT_SING);
+								parts[np].life = rand()%50+60;
+							}
+							continue;
+						}
+						parts[i].life += 3;
+						parts[i].tmp++;
+					}
+					parts[i].temp = restrict_flt(parts[r>>8].temp+parts[i].temp, MIN_TEMP, MAX_TEMP);
+					sim->kill_part(r>>8);
+				}
+			}
+	return 0;
+}