Further function pointers.

1 files changed, 37 insertions, 0 deletions

diff --git a/src/elements/ice.c b/src/elements/ice.c
new file mode 100644
index 0000000..11817e8
--- /dev/null
+++ b/src/elements/ice.c
@@ -0,0 +1,37 @@
+#include <powder.h>
+
+int update_ICEI(UPDATE_FUNC_ARGS) { //currently used for snow as well
+	int r;
+	if (parts[i].ctype==PT_FRZW)
+	{
+		parts[i].temp -= 1.0f;
+		if (parts[i].temp<0)
+			parts[i].temp = 0;
+
+	}
+	for (nx=-2; nx<3; nx++)
+		for (ny=-2; ny<3; 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 (((r&0xFF)==PT_SALT || (r&0xFF)==PT_SLTW) && 1>(rand()%1000))
+				{
+					parts[i].type = PT_SLTW;
+					parts[r>>8].type = PT_SLTW;
+				}
+				if (legacy_enable)
+				{
+					if (((r&0xFF)==PT_WATR || (r&0xFF)==PT_DSTW) && 1>(rand()%1000))
+					{
+						parts[i].type = PT_ICEI;
+						parts[r>>8].type = PT_ICEI;
+					}
+					if (parts[i].type==PT_SNOW && ((r&0xFF)==PT_WATR || (r&0xFF)==PT_DSTW) && 15>(rand()%1000))
+						parts[i].type = PT_WATR;
+				}
+			}
+	return 0;
+}