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-rw-r--r--src/powder.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/src/powder.c b/src/powder.c
index 2cb8e24..6059640 100644
--- a/src/powder.c
+++ b/src/powder.c
@@ -1320,8 +1320,12 @@ void update_particles_i(pixel *vid, int start, int inc)
for ( nnx=-1; nnx<2; nnx++)
for ( nny=-1; nny<2; nny++)//it will count itself as its own neighbor, which is needed, but will have 1 extra for delete check
{
- gol2[((nx+nnx+XRES-3*CELL)%(XRES-2*CELL))+CELL][((ny+nny+YRES-3*CELL)%(YRES-2*CELL))+CELL][golnum] ++;
- gol2[((nx+nnx+XRES-3*CELL)%(XRES-2*CELL))+CELL][((ny+nny+YRES-3*CELL)%(YRES-2*CELL))+CELL][0] ++;
+ rt = pmap[((ny+nny+YRES-3*CELL)%(YRES-2*CELL))+CELL][((nx+nnx+XRES-3*CELL)%(XRES-2*CELL))+CELL];
+ if (!rt || ptypes[rt&0xFF].properties&PROP_LIFE)
+ {
+ gol2[((nx+nnx+XRES-3*CELL)%(XRES-2*CELL))+CELL][((ny+nny+YRES-3*CELL)%(YRES-2*CELL))+CELL][golnum] ++;
+ gol2[((nx+nnx+XRES-3*CELL)%(XRES-2*CELL))+CELL][((ny+nny+YRES-3*CELL)%(YRES-2*CELL))+CELL][0] ++;
+ }
}
} else {
parts[r>>8].tmp --;