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#include <powder.h>
// Interactions which only occur when legacy_enable is on
int update_legacy_all(UPDATE_FUNC_ARGS) {
if (!legacy_enable) return 0;
int r, rx, ry, rt;
int t = parts[i].type;
if (t==PT_WTRV) {
for (rx=-2; rx<3; rx++)
for (ry=-2; ry<3; 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 (((r&0xFF)==PT_WATR||(r&0xFF)==PT_DSTW||(r&0xFF)==PT_SLTW) && 1>(rand()%1000))
{
part_change_type(i,x,y,PT_WATR);
part_change_type(r>>8,x+rx,y+ry,PT_WATR);
}
if (((r&0xFF)==PT_ICEI || (r&0xFF)==PT_SNOW) && 1>(rand()%1000))
{
part_change_type(i,x,y,PT_WATR);
if (1>(rand()%1000))
part_change_type(r>>8,x+nx,y+ny,PT_WATR);
}
}
}
else if (t==PT_WATR) {
for (rx=-2; rx<3; rx++)
for (ry=-2; ry<3; 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 (((r&0xFF)==PT_FIRE || (r&0xFF)==PT_LAVA) && 1>(rand()%10))
{
part_change_type(i,x,y,PT_WTRV);
}
}
}
else if (t==PT_SLTW) {
for (rx=-2; rx<3; rx++)
for (ry=-2; ry<3; 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 (((r&0xFF)==PT_FIRE || (r&0xFF)==PT_LAVA) && 1>(rand()%10))
{
part_change_type(i,x,y,PT_SALT);
part_change_type(r>>8,x+rx,y+ry,PT_WTRV);
}
}
}
else if (t==PT_DSTW) {
for (rx=-2; rx<3; rx++)
for (ry=-2; ry<3; 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 (((r&0xFF)==PT_FIRE || (r&0xFF)==PT_LAVA) && 1>(rand()%10))
{
part_change_type(i,x,y,PT_WTRV);
}
}
}
return 0;
}
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