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Fix neutrons crash

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Also fix neutrons causing unwanted movement of parts[0]
This commit is contained in:
jacksonmj 2011-04-03 01:37:41 +01:00 committed by Simon
parent 63089242a5
commit 4d80abc399
1 changed files with 11 additions and 5 deletions
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16
src/powder.c
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@ -237,7 +237,7 @@ int try_move(int i, int x, int y, int nx, int ny)
return 0;
}
if ((pmap[ny][nx]&0xFF)==PT_CNCT)//why is this here
if ((pmap[ny][nx]&0xFF)==PT_CNCT)//stops CNCT being displaced by other particles
return 0;
if (parts[i].type==PT_CNCT && y<ny && (pmap[y+1][x]&0xFF)==PT_CNCT)//check below CNCT for another CNCT
return 0;
@ -262,14 +262,20 @@ int try_move(int i, int x, int y, int nx, int ny)
if (parts[i].type==PT_NEUT) {
// target material is NEUTPENETRATE, meaning it gets moved around when neutron passes
unsigned s = pmap[y][x];
if ((s>>8)>=NPART) return 0;
if ((s&0xFF) && (s&0xFF)<PT_NUM && !(ptypes[s&0xFF].properties&PROP_NEUTPENETRATE))
return 1; // if the element currently underneath neutron isn't NEUTPENETRATE, don't move it around
if ((pmap[ny][nx]>>8)==e) pmap[ny][nx] = (s&~(0xFF))|parts[s>>8].type;
return 1; // if the element currently underneath neutron isn't NEUTPENETRATE, don't move anything except the neutron
// if nothing is currently underneath neutron, only move target particle
if (s)
{
pmap[ny][nx] = (s&~(0xFF))|parts[s>>8].type;
parts[s>>8].x = nx;
parts[s>>8].y = ny;
}
else pmap[ny][nx] = 0;
parts[e].x = x;
parts[e].y = y;
pmap[y][x] = (e<<8)|parts[e].type;
parts[s>>8].x = nx;
parts[s>>8].y = ny;
return 1;
}