Some more function pointers

1 files changed, 59 insertions, 0 deletions

diff --git a/src/elements/sing.c b/src/elements/sing.c
new file mode 100644
index 0000000..8f7c0a7
--- /dev/null
+++ b/src/elements/sing.c
@@ -0,0 +1,59 @@
+#include <powder.h>
+
+int update_SING(UPDATE_FUNC_ARGS) {
+	int r;
+	int singularity = -parts[i].life;
+
+	if (pv[y/CELL][x/CELL]<singularity)
+		pv[y/CELL][x/CELL] += 0.1f*(singularity-pv[y/CELL][x/CELL]);
+	if (y+CELL<YRES && pv[y/CELL+1][x/CELL]<singularity)
+		pv[y/CELL+1][x/CELL] += 0.1f*(singularity-pv[y/CELL+1][x/CELL]);
+	if (x+CELL<XRES)
+	{
+		pv[y/CELL][x/CELL+1] += 0.1f*(singularity-pv[y/CELL][x/CELL+1]);
+		if (y+CELL<YRES)
+			pv[y/CELL+1][x/CELL+1] += 0.1f*(singularity-pv[y/CELL+1][x/CELL+1]);
+	}
+	if (y+CELL>0 && pv[y/CELL-1][x/CELL]<singularity)
+		pv[y/CELL-1][x/CELL] += 0.1f*(singularity-pv[y/CELL-1][x/CELL]);
+	if (x+CELL>0)
+	{
+		pv[y/CELL][x/CELL-1] += 0.1f*(singularity-pv[y/CELL][x/CELL-1]);
+		if (y+CELL>0)
+			pv[y/CELL-1][x/CELL-1] += 0.1f*(singularity-pv[y/CELL-1][x/CELL-1]);
+	}
+	for (nx=-1; nx<2; nx++)
+		for (ny=-1; ny<2; ny++)
+			if (x+nx>=0 && y+ny>0 &&
+			        x+nx<XRES && y+ny<YRES && (nx || ny))
+			{
+				r = pmap[y+ny][x+nx];
+				if ((r>>8)>=NPART || !r)
+					continue;
+				if (parts[r>>8].type!=PT_DMND&&33>=rand()/(RAND_MAX/100)+1)
+				{
+					if (parts[r>>8].type==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)
+							{
+								parts[r>>8].type = PT_SING;
+								parts[r>>8].life = rand()%50+60;
+							}
+							continue;
+						}
+						parts[i].life += 3;
+					}
+					parts[i].temp = restrict_flt(parts[r>>8].temp+parts[i].temp, MIN_TEMP, MAX_TEMP);
+					parts[r>>8].type=PT_NONE;
+				}
+			}
+	return 0;
+}