1 files changed, 22 insertions, 0 deletions
diff --git a/src/elements/fog.c b/src/elements/fog.c
new file mode 100644
index 0000000..ff13916
--- /dev/null
+++ b/src/elements/fog.c
@@ -0,0 +1,22 @@
+#include <element.h>
+
+int update_FOG(UPDATE_FUNC_ARGS) {
+	int r, rx, ry;
+	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>>8)>=NPART || !r)
+					continue;
+				if (ptypes[r&0xFF].state==ST_SOLID&&5>=rand()%50&&parts[i].life==0&&!((r&0xFF)==PT_CLNE||(r&0xFF)==PT_PCLN)) // TODO: should this also exclude BCLN?
+				{
+					part_change_type(i,x,y,PT_RIME);
+				}
+				if ((r&0xFF)==PT_SPRK)
+				{
+					parts[i].life += rand()%20;
+				}
+			}
+	return 0;
+}