The-Powder-Toy/elements/qrtz.cpp
Simon Robertshaw b0ea52690b Initial
2012-01-08 17:39:03 +00:00

95 lines
2.0 KiB
C++

#include "element.h"
int update_QRTZ(UPDATE_FUNC_ARGS) {
int r, tmp, trade, rx, ry, np, t;
t = parts[i].type;
if (t == PT_QRTZ)
{
parts[i].pavg[0] = parts[i].pavg[1];
parts[i].pavg[1] = sim->pv[y/CELL][x/CELL];
if (parts[i].pavg[1]-parts[i].pavg[0] > 0.05*(parts[i].temp/3) || parts[i].pavg[1]-parts[i].pavg[0] < -0.05*(parts[i].temp/3))
{
sim->part_change_type(i,x,y,PT_PQRT);
}
}
// absorb SLTW
if (parts[i].ctype!=-1)
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)
continue;
else if ((r&0xFF)==PT_SLTW && (1>rand()%2500))
{
sim->kill_part(r>>8);
parts[i].ctype ++;
}
}
// grow if absorbed SLTW
if (parts[i].ctype>0)
{
for ( trade = 0; trade<5; trade ++)
{
rx = rand()%3-1;
ry = rand()%3-1;
if (x+rx>=0 && y+ry>0 && x+rx<XRES && y+ry<YRES && (rx || ry))
{
r = pmap[y+ry][x+rx];
if (!r && parts[i].ctype!=0)
{
np = sim->create_part(-1,x+rx,y+ry,PT_QRTZ);
if (np>-1)
{
parts[np].tmp = parts[i].tmp;
parts[i].ctype--;
if (5>rand()%10)
{
parts[np].ctype=-1;//dead qrtz
}
else if (!parts[i].ctype && 1>rand()%15)
{
parts[i].ctype=-1;
}
break;
}
}
}
}
}
// diffuse absorbed SLTW
if (parts[i].ctype>0)
{
for ( trade = 0; trade<9; trade ++)
{
rx = rand()%5-2;
ry = rand()%5-2;
if (x+rx>=0 && y+ry>0 && x+rx<XRES && y+ry<YRES && (rx || ry))
{
r = pmap[y+ry][x+rx];
if (!r)
continue;
if ((r&0xFF)==t && (parts[i].ctype>parts[r>>8].ctype) && parts[r>>8].ctype>=0 )//diffusion
{
tmp = parts[i].ctype - parts[r>>8].ctype;
if (tmp ==1)
{
parts[r>>8].ctype ++;
parts[i].ctype --;
break;
}
if (tmp>0)
{
parts[r>>8].ctype += tmp/2;
parts[i].ctype -= tmp/2;
break;
}
}
}
}
}
return 0;
}