variables and if statements for scripts, GoL is glitchy for me, i don't know why

src/interface.c

@@ -3965,6 +3965,7 @@ int console_parse_type(char *txt, int *element, char *err)
 		if (strcmp(txt,num)==0)
 		{
 			*element = i;
+			strcpy(err,"");
 			return 1;
 		}
 	}
@@ -3976,12 +3977,14 @@ int console_parse_type(char *txt, int *element, char *err)
 	if (i>=0)
 	{
 		*element = i;
+		strcpy(err,"");
 		return 1;
 	}
 	for (i=1; i<PT_NUM; i++) {
 		if (strcasecmp(txt,ptypes[i].name)==0)
 		{
 			*element = i;
+			strcpy(err,"");
 			return 1;
 		}
 	}
@@ -4044,6 +4047,7 @@ int console_parse_partref(char *txt, int *which, char *err)
 	if (i>=0 && i<NPART && parts[i].type)
 	{
 		*which = i;
+		strcpy(err,"");
 		return 1;
 	}
 	strcpy(err,"Particle does not exist");

src/main.c

@@ -1780,7 +1780,7 @@ int main(int argc, char *argv[])
 			console = console_ui(vid_buf,console_error);
 			console = mystrdup(console);
 			strcpy(console_error,"");
-			if(process_command(vid_buf,console,&console_error)==0)
+			if(process_command(vid_buf,console,&console_error)==-1)
 			{
 				free(console);
 				break;
@@ -2627,7 +2627,10 @@ int main(int argc, char *argv[])
 }
 int process_command(pixel *vid_buf,char *console,char *console_error) {
 	
-int nx,ny,i,j,k;
+int x,y,nx,ny,i,j,k,m;
+int do_next = 1;
+char xcoord[10];
+char ycoord[10];
 char *console2;
 char *console3;
 char *console4;
@@ -2641,24 +2644,112 @@ char *console5;
 		console5 = strtok(NULL, " ");
 		if(strcmp(console2, "quit")==0)
 		{
-			return 0;
+			return -1;
 		}
 		else if(strcmp(console2, "file")==0 && console3)
 		{
 			FILE *f=fopen(console3, "r");
 			if(f)
 			{
+				nx = 0;
+				ny = 0;
+				j = 0;
+				m = 0;
+				if(console4)
+					console_parse_coords(console4, &nx , &ny, console_error);
 				char fileread[5000];//TODO: make this change with file size
 				char pch[5000];
+				memset(pch,0,sizeof(pch));
+				memset(fileread,0,sizeof(fileread));
+				char tokens[10];
+				int tokensize;
 				fread(fileread,1,5000,f);
-				j = 0;
 				for(i=0; i<strlen(fileread); i++)
 				{
 					if(fileread[i] != '\n')
-						pch[i-j] = fileread[i];
-					else
 					{
-						process_command(vid_buf, pch, console_error);
+						pch[i-j] = fileread[i];
+						if(fileread[i] != ' ')
+							tokens[i-m] = fileread[i];
+					}
+					if(fileread[i] == ' ' || fileread[i] == '\n')
+					{
+						if(sregexp(tokens,"^x.[0-9],y.[0-9]")==0)//TODO: fix regex matching to work with x,y ect, right now it has to have a +0 or -0
+						{
+							char temp[5];
+							int starty = 0;
+							tokensize = strlen(tokens);
+							x = 0;
+							y = 0;
+							strcpy(xcoord,strtok(tokens,","));
+							strcpy(ycoord,strtok(NULL," "));
+							if(xcoord[1]=='+')//get additions
+							{
+								for(k = 2; k<strlen(xcoord);k++)
+								{
+									temp[k-2] = xcoord[k];
+								}
+								x += atoi(temp);
+							}
+							else if(xcoord[1]=='-')
+							{
+								for(k = 2; k<strlen(xcoord);k++)
+								{
+									temp[k-2] = xcoord[k];
+								}
+								x += -atoi(temp);
+							}
+							memset(temp, 0,sizeof(temp));
+							if(ycoord[1]=='+')
+							{
+								for(k = 2; k<strlen(ycoord);k++)
+								{
+									temp[k-2] = ycoord[k];
+								}
+								y += atoi(temp);
+							}
+							else if(ycoord[1]=='-')
+							{
+								for(k = 2; k<strlen(ycoord);k++)
+								{
+									temp[k-2] = ycoord[k];
+								}
+								y += -atoi(temp);
+							}
+							x += nx;
+							y += ny;
+							sprintf(xcoord,"%d",x);
+							sprintf(ycoord,"%d",y);
+							for(k = 0; k<strlen(xcoord);k++)//rewrite pch with numbers
+							{
+								pch[i-j-tokensize+k] = xcoord[k];
+								starty = k+1;
+							}
+							pch[i-j-tokensize+starty] = ',';
+							starty++;
+							for(k=0;k<strlen(ycoord);k++)
+							{
+								pch[i-j-tokensize+starty+k] = ycoord[k];
+								
+							}
+							pch[i-j-tokensize +strlen(xcoord) +1 +strlen(ycoord)] = ' ';
+							j = j -tokensize +strlen(xcoord) +1 +strlen(ycoord);
+						}
+						memset(tokens,0,sizeof(tokens));
+						m = i+1;
+					}
+					if(fileread[i] == '\n')
+					{
+						
+						if(do_next)
+						{
+							if(strcmp(pch,"else")==0)
+								do_next = 0;
+							else
+								do_next = process_command(vid_buf, pch, console_error);
+						}
+						else if(strcmp(pch,"endif")==0 || strcmp(pch,"else")==0)
+							do_next = 1;
 						memset(pch,0,sizeof(pch));
 						j = i+1;
 					}
@@ -2682,6 +2773,22 @@ char *console5;
 				console_mode = 0;
 			}
 		}
+		else if(strcmp(console2, "if")==0 && console3)
+		{
+			if(strcmp(console3, "type")==0)//TODO: add more than just type, and be able to check greater/less than
+			{
+				if (console_parse_partref(console4, &i, console_error)
+					&& console_parse_type(console5, &j, console_error))
+				{
+					if(parts[i].type==j)
+						return 1;
+					else
+						return 0;
+				}
+				else
+					return 0;
+			}
+		}
 		else if (strcmp(console2, "create")==0 && console3 && console4)
 		{
 			if (console_parse_type(console3, &j, console_error)