More function pointers.

1 files changed, 39 insertions, 0 deletions

diff --git a/src/elements/acid.c b/src/elements/acid.c
new file mode 100644
index 0000000..b42379a
--- /dev/null
+++ b/src/elements/acid.c
@@ -0,0 +1,39 @@
+#include <powder.h>
+
+int update_ACID(UPDATE_FUNC_ARGS) {
+	int r;
+	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_ACID)
+				{
+					if ((r&0xFF)==PT_PLEX || (r&0xFF)==PT_NITR || (r&0xFF)==PT_GUNP || (r&0xFF)==PT_RBDM || (r&0xFF)==PT_LRBD)
+					{
+						parts[i].type = PT_FIRE;
+						parts[i].life = 4;
+						parts[r>>8].type = PT_FIRE;
+						parts[r>>8].life = 4;
+					}
+					else if (((r&0xFF)!=PT_CLNE && (r&0xFF)!=PT_PCLN && ptypes[parts[r>>8].type].hardness>(rand()%1000))&&parts[i].life>=50)
+					{
+						if (parts_avg(i, r>>8,PT_GLAS)!= PT_GLAS)
+						{
+							parts[i].life--;
+							parts[r>>8].type = PT_NONE;
+							return 1;
+						}
+					}
+					else if (parts[i].life<=50)
+					{
+						parts[i].life = 0;
+						parts[i].type = PT_NONE;
+						return 1;
+					}
+				}
+			}
+	return 0;
+}