#include <element.h>

int update_PRES(UPDATE_FUNC_ARGS) {
    int r, rx, ry;
    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_PRES && parts[r>>8].temp>100)||(r&0xFF)==PT_FIRE)
                {
                    if (1>rand()%6)
                    {
                        part_change_type(i,x,y,PT_FIRE);
                        parts[r>>8].temp = parts[i].temp = 500;
                        parts[i].life = rand()%150+50;
                        pv[y/CELL][x/CELL] += 40.5;
                    }
                }
            }
    return 0;
}