The-Powder-Toy/src/simulation/elements/BOYL.cpp

#include "simulation/Elements.h"
//#TPT-Directive ElementClass Element_BOYL PT_BOYL 141
Element_BOYL::Element_BOYL()
{
    Identifier = "DEFAULT_PT_BOYL";
    Name = "BOYL";
    Colour = PIXPACK(0x0A3200);
    MenuVisible = 1;
    MenuSection = SC_GAS;
    Enabled = 1;
    
    Advection = 1.0f;
    AirDrag = 0.01f * CFDS;
    AirLoss = 0.99f;
    Loss = 0.30f;
    Collision = -0.1f;
    Gravity = 0.0f;
    Diffusion = 0.18f;
    HotAir = 0.000f	* CFDS;
    Falldown = 0;
    
    Flammable = 0;
    Explosive = 0;
    Meltable = 0;
    Hardness = 1;
    
    Weight = 1;
    
    Temperature = R_TEMP+2.0f	+273.15f;
    HeatConduct = 42;
    Description = "Boyle, variable pressure gas. Expands when heated.";
    
    State = ST_GAS;
    Properties = TYPE_GAS;
    
    LowPressure = IPL;
    LowPressureTransition = NT;
    HighPressure = IPH;
    HighPressureTransition = NT;
    LowTemperature = ITL;
    LowTemperatureTransition = NT;
    HighTemperature = ITH;
    HighTemperatureTransition = NT;
    
    Update = &Element_BOYL::update;
    
}

//#TPT-Directive ElementHeader Element_BOYL static int update(UPDATE_FUNC_ARGS)
int Element_BOYL::update(UPDATE_FUNC_ARGS)
 {
	int r, rx, ry;
	if (sim->pv[y/CELL][x/CELL]<(parts[i].temp/100))
		sim->pv[y/CELL][x/CELL] += 0.001f*((parts[i].temp/100)-sim->pv[y/CELL][x/CELL]);
	if (y+CELL<YRES && sim->pv[y/CELL+1][x/CELL]<(parts[i].temp/100))
		sim->pv[y/CELL+1][x/CELL] += 0.001f*((parts[i].temp/100)-sim->pv[y/CELL+1][x/CELL]);
	if (x+CELL<XRES)
	{
		sim->pv[y/CELL][x/CELL+1] += 0.001f*((parts[i].temp/100)-sim->pv[y/CELL][x/CELL+1]);
		if (y+CELL<YRES)
			sim->pv[y/CELL+1][x/CELL+1] += 0.001f*((parts[i].temp/100)-sim->pv[y/CELL+1][x/CELL+1]);
	}
	if (y-CELL>=0 && sim->pv[y/CELL-1][x/CELL]<(parts[i].temp/100))
		sim->pv[y/CELL-1][x/CELL] += 0.001f*((parts[i].temp/100)-sim->pv[y/CELL-1][x/CELL]);
	if (x-CELL>=0)
	{
		sim->pv[y/CELL][x/CELL-1] += 0.001f*((parts[i].temp/100)-sim->pv[y/CELL][x/CELL-1]);
		if (y-CELL>=0)
			sim->pv[y/CELL-1][x/CELL-1] += 0.001f*((parts[i].temp/100)-sim->pv[y/CELL-1][x/CELL-1]);
	}
	for (rx=-1; rx<2; rx++)
		for (ry=-1; ry<2; 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;
				if ((r&0xFF)==PT_WATR && 1>rand()%30)
				{
					sim->part_change_type(r>>8,x+rx,y+ry,PT_FOG);
				}
				else if ((r&0xFF)==PT_O2 && 1>rand()%9)
				{
					sim->kill_part(r>>8);
					sim->part_change_type(i,x,y,PT_WATR);
					sim->pv[y/CELL][x/CELL] += 4.0;
				}
			}
	return 0;
}


Element_BOYL::~Element_BOYL() {}