The-Powder-Toy/elements/shld.cpp

#include "element.h"

int update_SHLD1(UPDATE_FUNC_ARGS) {
	int r, nnx, nny, rx, ry;
	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;
				else if ((r&0xFF)==PT_SPRK&&parts[i].life==0)
				{
					if (55>rand()%200&&parts[i].life==0)
					{
						sim->part_change_type(i,x,y,PT_SHLD2);
						parts[i].life = 7;
					}
					for ( nnx=-1; nnx<2; nnx++)
						for ( nny=-1; nny<2; nny++)
						{
							if (!pmap[y+ry+nny][x+rx+nnx])
							{
								sim->create_part(-1,x+rx+nnx,y+ry+nny,PT_SHLD1);
								//parts[pmap[y+ny+nny][x+nx+nnx]>>8].life=7;
							}
						}
				}
				else if ((r&0xFF)==PT_SHLD3&&4>rand()%10)
				{
					sim->part_change_type(i,x,y,PT_SHLD2);
					parts[i].life = 7;
				}
			}
	return 0;
}

int update_SHLD2(UPDATE_FUNC_ARGS) {
	int r, nnx, nny, rx, ry, np;
	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 && parts[i].life>0)
					sim->create_part(-1,x+rx,y+ry,PT_SHLD1);
				if (!r)
					continue;
				else if ((r&0xFF)==PT_SPRK&&parts[i].life==0)
				{
					if (25>rand()%200&&parts[i].life==0)
					{
						sim->part_change_type(i,x,y,PT_SHLD3);
						parts[i].life = 7;
					}
					for ( nnx=-1; nnx<2; nnx++)
						for ( nny=-1; nny<2; nny++)
						{
							if (!pmap[y+ry+nny][x+rx+nnx])
							{
								np = sim->create_part(-1,x+rx+nnx,y+ry+nny,PT_SHLD1);
								if (np<0) continue;
								parts[np].life=7;
							}
						}
				}
				else if ((r&0xFF)==PT_SHLD4&&4>rand()%10)
				{
					sim->part_change_type(i,x,y,PT_SHLD3);
					parts[i].life = 7;
				}
			}
	return 0;
}

int update_SHLD3(UPDATE_FUNC_ARGS) {
	int r, nnx, nny, rx, ry, np;
	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)
				{
					if (1>rand()%2500)
					{
						np = sim->create_part(-1,x+rx,y+ry,PT_SHLD1);
						if (np<0) continue;
						parts[np].life=7;
						sim->part_change_type(i,x,y,PT_SHLD2);
					}
					else
						continue;

				}
				if ((r&0xFF)==PT_SHLD1 && parts[i].life>3)
				{
					sim->part_change_type(r>>8,x+rx,y+ry,PT_SHLD2);
					parts[r>>8].life=7;
				}
				else if ((r&0xFF)==PT_SPRK&&parts[i].life==0)
				{
					if (18>rand()%3000&&parts[i].life==0)
					{
						sim->part_change_type(i,x,y,PT_SHLD4);
						parts[i].life = 7;
					}
					for ( nnx=-1; nnx<2; nnx++)
						for ( nny=-1; nny<2; nny++)
						{

							if (!pmap[y+ry+nny][x+rx+nnx])
							{
								np = sim->create_part(-1,x+rx+nnx,y+ry+nny,PT_SHLD1);
								if (np<0) continue;
								parts[np].life=7;
							}
						}
				}
			}
	return 0;
}

int update_SHLD4(UPDATE_FUNC_ARGS) {
	int r, nnx, nny, rx, ry, np;
	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)
				{
					if (1>rand()%5500)
					{
						np = sim->create_part(-1,x+rx,y+ry,PT_SHLD1);
						if (np<0) continue;
						parts[np].life=7;
						sim->part_change_type(i,x,y,PT_SHLD2);
					}
					else
						continue;

				}
				if ((r&0xFF)==PT_SHLD2 && parts[i].life>3)
				{
					sim->part_change_type(r>>8,x+rx,y+ry,PT_SHLD3);
					parts[r>>8].life = 7;
				}
				else if ((r&0xFF)==PT_SPRK&&parts[i].life==0)
					for ( nnx=-1; nnx<2; nnx++)
						for ( nny=-1; nny<2; nny++)
						{
							if (!pmap[y+ry+nny][x+rx+nnx])
							{
								np = sim->create_part(-1,x+rx+nnx,y+ry+nny,PT_SHLD1);
								if (np<0) continue;
								parts[np].life=7;
							}
						}
			}
	return 0;
}