From 790e630a2446142efd37e8a416a1f44065ed697a Mon Sep 17 00:00:00 2001
From: hackbard <hackbard>
Date: Wed, 17 Nov 2004 16:31:26 +0000
Subject: [PATCH] last changes, no more segfaults still need to find right
 parameter set

---
 dfe.c | 67 +++++++++++++++++++++++++++++++++++++++++++----------------
 1 file changed, 49 insertions(+), 18 deletions(-)

diff --git a/dfe.c b/dfe.c
index c507fa8..208b1a6 100644
--- a/dfe.c
+++ b/dfe.c
@@ -9,6 +9,10 @@
  *
  * usage: ./dfe 100 50 2 1 1 10
  *
+ * anmerkung frank: bisschen was ging so: ./dfe 1 5 2 1 1 10
+ *                  ist auch schotter, aber mit richtigen parametern
+ *                  wirds. viel glueck!!
+ * 
  * author: christian leirer, frank zirkelbach
  *
  * need api: cvs -d:pserver:anonymous@hackdaworld.dyndns.org:/my-code co api
@@ -38,16 +42,16 @@ typedef struct s_gp {
 
 int main(int argc,char **argv) {
 
-  int x,y;
+  int x,y=0;
   int dx,dy;
-  int mx,my;
+  int mx=0,my=0;
   double lf[2];
   double sf[2];
   double mf;
   double lpp;
   int i;
   int size;
-  t_gp gp;
+  t_gp gp,cgp;
   t_gp *gp_ptr;
   t_list list;
   t_list_element *tmp;
@@ -81,7 +85,7 @@ int main(int argc,char **argv) {
 
   fd=open("/dev/null",O_WRONLY);
 
-  list_init(&list,fd);
+  list_init(&list,1);
 
   size=X_*Y_;
   bmp_init(&bmp,1);
@@ -90,7 +94,7 @@ int main(int argc,char **argv) {
   bmp.mode=WRITE;
   bmp_alloc_map(&bmp);
 
-  srandom(time(NULL));
+  srand(time(NULL));
 
   for(x=0;x<X_;x++) {
     memset(&gp,0,sizeof(t_gp));
@@ -101,6 +105,7 @@ int main(int argc,char **argv) {
 
   /* mainloop */
   for(i=0;i<STEPS;i++) {
+
     /* determine status of vortex, liquid or solid */
     list_reset(&list);
     do {
@@ -115,12 +120,12 @@ int main(int argc,char **argv) {
             if(y>=0&&y<Y_) {
               gp.x=x; gp.y=y;
               if(list_search_data(&list,&gp,2*sizeof(int))==L_SUCCESS)
-                gp_ptr->pp+=exp(-1.0*sqrt(x*x+y*y)/xi);
-		
+                lpp+=exp(-1.0*sqrt(x*x+y*y)/xi);
             }
           }
         }
       }
+      gp_ptr->pp=pp-lpp;
       if(lpp>(0.8*pp)) gp_ptr->status=FLUESSIG;
       else gp_ptr->status=FEST;
       list.current=tmp;
@@ -129,6 +134,7 @@ int main(int argc,char **argv) {
 
     /* force on vortex */
     list_reset(&list);
+    mf=0;
     do {
       lf[0]=0; lf[1]=0;
       sf[0]=0; sf[1]=0;
@@ -145,16 +151,14 @@ int main(int argc,char **argv) {
               if(list_search_data(&list,&gp,2*sizeof(int))==L_SUCCESS) {
                 memcpy(&gp,list.current->data,sizeof(t_gp));
                 if(gp.status&FEST) {
-                  if(dy==0) sf[0]+=(-1.0/(dx*dx+dy*dy)*co*(dx/abs(dx)));
-                  else if (dx==0) sf[1]+=(-1.0/(dx*dx+dy*dy)*co*(dy/abs(dy)));
-                  /* hier ist die scheisse drin!! */
+                  if(dy==0) sf[0]+=(-1.0/(dx*dx)*co*(dx/abs(dx)));
+                  else if (dx==0) sf[1]+=(-1.0/(dy*dy)*co*(dy/abs(dy)));
                   else {
-                    sf[0]+=(-1.0/(dx*dx+dy*dy)*co*dx/abs(dy));
-                    sf[1]+=(-1.0/(dx*dx+dy*dy)*co*dy/abs(dx));
+                    sf[0]+=(-1.0/(dx*dx+dy*dy)*co*1.0*dx/abs(dy));
+                    sf[1]+=(-1.0/(dx*dx+dy*dy)*co*1.0*dy/abs(dx));
 		  }
                 }
                 else {
-                  /* und hier wahrscheinlich auch */
                   if(dy==0) lf[0]+=(-1.0*(dx/abs(dx))*(by+co));
 		  else if(dx==0) lf[1]+=(-1.0*(dy/abs(dy))*(by+co));
 		  else{
@@ -169,6 +173,7 @@ int main(int argc,char **argv) {
       }
       gp_ptr->fx=sf[0]+lf[0]+((1.0*rand()/RAND_MAX)-0.5)/rs;
       gp_ptr->fy=sf[1]+lf[1]+((1.0*rand()/RAND_MAX)-0.5)/rs;
+      if(gp_ptr->y==0) gp_ptr->fy+=by;
       if(gp_ptr->status&FEST) {
         gp_ptr->fy+=(bf*exp(-y*1.0/100));
         if(gp_ptr->fx>0) {
@@ -188,7 +193,6 @@ int main(int argc,char **argv) {
           if(gp_ptr->fy>0) gp_ptr->fy=0;
         }
       }
-      if(gp_ptr->y==0) gp_ptr->fy+=by; /* wenn rand by dazu, arschloch !!1 */
       if((mf<gp_ptr->fx)||(mf<gp_ptr->fy)) {
         mf=gp_ptr->fx>gp_ptr->fy?gp_ptr->fx:gp_ptr->fy;
         mx=gp_ptr->x;
@@ -200,7 +204,7 @@ int main(int argc,char **argv) {
 
     /* move vortex with highest force */
     gp.x=mx; gp.y=my;
-    printf("step %d: move vortex %d %d,",i,mx,my);
+    printf("step %d: want to move vortex %d %d,",i,mx,my);
     list_search_data(&list,&gp,2*sizeof(int));
     gp_ptr=(t_gp *)list.current->data;
     dx=0; dy=0;
@@ -213,9 +217,36 @@ int main(int argc,char **argv) {
       else dy=-1;
     }
     printf(" with direction dx=%d dy=%d | force: %f %f\n",dx,dy,gp_ptr->fx,gp_ptr->fy);
-    gp_ptr->x+=dx;
-    gp_ptr->y+=dy;
-    if(gp.y==0) list_add_element(&list,&gp,sizeof(t_gp));
+    cgp.x=gp_ptr->x+dx;
+    cgp.y=gp_ptr->y+dy;
+    if(list_search_data(&list,&cgp,2*sizeof(int))==L_SUCCESS) {
+      printf("but there is allready a flussfaden! this parameter set suX!\n");
+    }
+    else if(gp_ptr->y==0&&dy==-1) {
+      printf("but this wuld be stupid (out of target), skipped!\n");
+    }
+    else {
+      printf("and i am doing it now! :)\n");
+      gp_ptr->x+=dx;
+      gp_ptr->y+=dy;
+      if(gp.y==0) {
+        printf("adding moved flussfaden (y=0)\n");
+        list_add_element(&list,&gp,sizeof(t_gp));
+      }
+    }
+    if(gp_ptr->y==Y_-1) {
+      printf("flussfaden reached top of target, ending simulation!\n");
+      return 1;
+    }
+
+    /*
+    printf("alle flussfaden:\n");
+    list_reset(&list);
+    do {
+      gp_ptr=(t_gp *)list.current->data;
+      printf("flussfaden bei %d %d\n",gp_ptr->x,gp_ptr->y);
+    } while(list_next(&list)!=L_NO_NEXT_ELEMENT);
+    */
 
     /* plot every PLOT steps */
     if(i%PLOT==0) {
-- 
2.20.1