The-Powder-Toy/src/elements/sprk.cpp

#include "simulation/Element.h"

int update_SPRK(UPDATE_FUNC_ARGS) {
	int r, rx, ry, rt, conduct_sprk, nearp, pavg, ct = parts[i].ctype;
	update_PYRO(UPDATE_FUNC_SUBCALL_ARGS);

	if (parts[i].life<=0)
	{
		if (ct==PT_WATR||ct==PT_SLTW||ct==PT_PSCN||ct==PT_NSCN||ct==PT_ETRD||ct==PT_INWR)
			parts[i].temp = R_TEMP + 273.15f;
		if (ct<=0 || ct>=PT_NUM)
			ct = PT_METL;
		sim->part_change_type(i,x,y,ct);
		parts[i].ctype = PT_NONE;
		parts[i].life = 4;
		if (ct == PT_WATR)
			parts[i].life = 64;
		if (ct == PT_SLTW)
			parts[i].life = 54;
		if (ct == PT_SWCH)
			parts[i].life = 14;
		return 0;
	}
	if (ct==PT_SPRK)
	{
		sim->kill_part(i);
		return 1;
	}
	else if (ct==PT_NTCT || ct==PT_PTCT)
	{
		update_NPTCT(UPDATE_FUNC_SUBCALL_ARGS);
	}
	else if (ct==PT_ETRD&&parts[i].life==1)
	{
		nearp = sim->nearest_part(i, PT_ETRD, -1);
		if (nearp!=-1 && sim->parts_avg(i, nearp, PT_INSL)!=PT_INSL)
		{
			sim->create_line(x, y, (int)(parts[nearp].x+0.5f), (int)(parts[nearp].y+0.5f), 0, 0, PT_PLSM, 0);
			sim->part_change_type(i,x,y,ct);
			ct = parts[i].ctype = PT_NONE;
			parts[i].life = 20;
			sim->part_change_type(nearp,(int)(parts[nearp].x+0.5f),(int)(parts[nearp].y+0.5f),PT_SPRK);
			parts[nearp].life = 9;
			parts[nearp].ctype = PT_ETRD;
		}
	}
	else if (ct==PT_NBLE&&parts[i].life<=1&&parts[i].tmp!=1)
	{
		parts[i].life = rand()%150+50;
		sim->part_change_type(i,x,y,PT_PLSM);
		parts[i].ctype = PT_NBLE;
		parts[i].temp = 3500;
		sim->pv[y/CELL][x/CELL] += 1;
	}
	else if (ct==PT_TESC) // tesla coil code
	{
		if (parts[i].tmp>300)
			parts[i].tmp=300;
		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 (rand()%(parts[i].tmp*parts[i].tmp/20+6)==0)
					{
						int p = sim->create_part(-1, x+rx*2, y+ry*2, PT_LIGH);
						if (p!=-1)
						{
							if(parts[i].tmp<=4) //Prevent Arithmetic errors with zero values
								continue;
							parts[p].life=rand()%(2+parts[i].tmp/15)+parts[i].tmp/7;
							if (parts[i].life>60)
								parts[i].life=60;
							parts[p].temp=parts[p].life*parts[i].tmp/2.5;
							parts[p].tmp2=1;
							parts[p].tmp=acos(1.0*rx/sqrt(rx*rx+ry*ry))/M_PI*360;
							parts[i].temp-=parts[i].tmp*2+parts[i].temp/5; // slight self-cooling
							if (fabs(sim->pv[y/CELL][x/CELL])!=0.0f)
							{
								if (fabs(sim->pv[y/CELL][x/CELL])<=0.5f)
									sim->pv[y/CELL][x/CELL]=0;
								else
									sim->pv[y/CELL][x/CELL]-=(sim->pv[y/CELL][x/CELL]>0)?0.5:-0.5;
							}
						}
					}
				}
	}
	else if (ct==PT_IRON) {
		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_DSTW && 30>(rand()/(RAND_MAX/1000))) ||
					        ((r&0xFF) == PT_SLTW && 30>(rand()/(RAND_MAX/1000))) ||
					        ((r&0xFF) == PT_WATR && 30>(rand()/(RAND_MAX/1000))))
					{
						if (rand()<RAND_MAX/3)
							sim->part_change_type(r>>8,x+rx,y+ry,PT_O2);
						else
							sim->part_change_type(r>>8,x+rx,y+ry,PT_H2);
					}
				}
	}
	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;
				rt = parts[r>>8].type;
				conduct_sprk = 1;


				pavg = sim->parts_avg(r>>8, i,PT_INSL);
				if ((rt==PT_SWCH||(rt==PT_SPRK&&parts[r>>8].ctype==PT_SWCH)) && pavg!=PT_INSL && parts[i].life<4) // make sparked SWCH turn off correctly
				{
					if (rt==PT_SWCH&&ct==PT_PSCN&&parts[r>>8].life<10) {
						parts[r>>8].life = 10;
					}
					if (ct==PT_NSCN) {
						sim->part_change_type(r>>8,x+rx,y+ry,PT_SWCH);
						parts[r>>8].ctype = PT_NONE;
						parts[r>>8].life = 9;
					}
				}
				else if ((ct==PT_PSCN||ct==PT_NSCN) && (rt==PT_PUMP||rt==PT_GPMP||rt==PT_HSWC||rt==PT_PBCN) && parts[i].life<4) // PROP_PTOGGLE, Maybe? We seem to use 2 different methods for handling actived elements, this one seems better. Yes, use this one for new elements, PCLN is different for compatibility with existing saves
				{
					if (ct==PT_PSCN) parts[r>>8].life = 10;
					else if (ct==PT_NSCN && parts[r>>8].life>=10) parts[r>>8].life = 9;
				}
				else if ((ct==PT_PSCN||ct==PT_NSCN) && (rt==PT_LCRY&&abs(rx)<2&&abs(ry)<2) && parts[i].life<4)
				{
					if (ct==PT_PSCN && parts[r>>8].tmp == 0) parts[r>>8].tmp = 2;
					else if (ct==PT_NSCN && parts[r>>8].tmp == 3) parts[r>>8].tmp = 1;
				}


				// ct = spark from material, rt = spark to material. Make conduct_sprk = 0 if conduction not allowed

				if (pavg == PT_INSL) conduct_sprk = 0;
				if (!((sim->ptypes[rt].properties&PROP_CONDUCTS)||rt==PT_INST||rt==PT_QRTZ)) conduct_sprk = 0;
				if (abs(rx)+abs(ry)>=4 &&ct!=PT_SWCH&&rt!=PT_SWCH)
					conduct_sprk = 0;


				if (ct==PT_METL && (rt==PT_NTCT||rt==PT_PTCT||rt==PT_INWR||(rt==PT_SPRK&&(parts[r>>8].ctype==PT_NTCT||parts[r>>8].ctype==PT_PTCT))) && pavg!=PT_INSL && parts[i].life<4)
				{
					parts[r>>8].temp = 473.0f;
					if (rt==PT_NTCT||rt==PT_PTCT)
						conduct_sprk = 0;
				}
				if (ct==PT_NTCT && !(rt==PT_PSCN || rt==PT_NTCT || (rt==PT_NSCN&&parts[i].temp>373.0f)))
					conduct_sprk = 0;
				if (ct==PT_PTCT && !(rt==PT_PSCN || rt==PT_PTCT || (rt==PT_NSCN&&parts[i].temp<373.0f)))
					conduct_sprk = 0;
				if (ct==PT_INWR && !(rt==PT_NSCN || rt==PT_INWR || rt==PT_PSCN))
					conduct_sprk = 0;
				if (ct==PT_NSCN && rt==PT_PSCN)
					conduct_sprk = 0;
				if (ct==PT_ETRD && !(rt==PT_METL||rt==PT_ETRD||rt==PT_BMTL||rt==PT_BRMT||rt==PT_LRBD||rt==PT_RBDM||rt==PT_PSCN||rt==PT_NSCN))
					conduct_sprk = 0;
				if (ct==PT_INST&&rt!=PT_NSCN) conduct_sprk = 0;
				if (ct==PT_SWCH && (rt==PT_PSCN||rt==PT_NSCN||rt==PT_WATR||rt==PT_SLTW||rt==PT_NTCT||rt==PT_PTCT||rt==PT_INWR))
					conduct_sprk = 0;
				if (rt==PT_QRTZ && !((ct==PT_NSCN||ct==PT_METL||ct==PT_PSCN||ct==PT_QRTZ) && (parts[r>>8].temp<173.15||sim->pv[(y+ry)/CELL][(x+rx)/CELL]>8)))
					conduct_sprk = 0;
				if (rt==PT_NTCT && !(ct==PT_NSCN || ct==PT_NTCT || (ct==PT_PSCN&&parts[r>>8].temp>373.0f)))
					conduct_sprk = 0;
				if (rt==PT_PTCT && !(ct==PT_NSCN || ct==PT_PTCT || (ct==PT_PSCN&&parts[r>>8].temp<373.0f)))
					conduct_sprk = 0;
				if (rt==PT_INWR && !(ct==PT_NSCN || ct==PT_INWR || ct==PT_PSCN))
					conduct_sprk = 0;
				if (rt==PT_INST&&ct!=PT_PSCN)
					conduct_sprk = 0;
				if (rt == PT_NBLE && parts[r>>8].tmp == 1)
					conduct_sprk = 0;

				if (conduct_sprk) {
					if (rt==PT_WATR||rt==PT_SLTW) {
						if (parts[r>>8].life==0 && parts[i].life<3)
						{
							sim->part_change_type(r>>8,x+rx,y+ry,PT_SPRK);
							if (rt==PT_WATR) parts[r>>8].life = 6;
							else parts[r>>8].life = 5;
							parts[r>>8].ctype = rt;
						}
					}
					else if (rt==PT_INST) {
						if (parts[r>>8].life==0 && parts[i].life<4)
						{
							sim->flood_parts(x+rx,y+ry,PT_SPRK,PT_INST,-1, 0);//spark the wire
						}
					}
					else if (parts[r>>8].life==0 && parts[i].life<4) {
						parts[r>>8].life = 4;
						parts[r>>8].ctype = rt;
						sim->part_change_type(r>>8,x+rx,y+ry,PT_SPRK);
						if (parts[r>>8].temp+10.0f<673.0f&&!sim->legacy_enable&&(rt==PT_METL||rt==PT_BMTL||rt==PT_BRMT||rt==PT_PSCN||rt==PT_NSCN||rt==PT_ETRD||rt==PT_NBLE||rt==PT_IRON))
							parts[r>>8].temp = parts[r>>8].temp+10.0f;
					}
					else if (ct==PT_ETRD && parts[i].life==5)
					{
						sim->part_change_type(i,x,y,ct);
						parts[i].ctype = PT_NONE;
						parts[i].life = 20;
						parts[r>>8].life = 4;
						parts[r>>8].ctype = rt;
						sim->part_change_type(r>>8,x+rx,y+ry,PT_SPRK);
					}
				}
			}
	return 0;
}

int graphics_SPRK(GRAPHICS_FUNC_ARGS)
{
	*firea = 80;
	
	*firer = *colr = 170;
	*fireg = *colg = 200;
	*fireb = *colb = 220;
	//*pixel_mode |= FIRE_ADD;
	*pixel_mode |= FIRE_ADD;
	return 1;
}