* Simplify code

examples/minepump_ba/simu.c

 #include <stdio.h>
 #include <stdlib.h>
+#include <stdbool.h>
 #include <pthread.h>
 
-#ifdef __SIMU_SOCKET__
-#include <sys/types.h>
-#include <sys/socket.h>
-#include <arpa/inet.h>
-#endif /* __SIMU_SOCKET__ */
-
 #include "simu.h"
 
-#ifdef __SIMU_SOCKET__
-FILE * sockin;
-#endif /* __SIMU_SOCKET__ */
-
-FILE * sockout;
 pthread_mutex_t mutex_simu_minepump;
 int CmdPump_Value = 0; /* c = 0, pump is off, c = 1, pump is on */
 int WaterLevel_Value = 50;
 
 /*****************************************************************************/
 void InitSimu(void) {
-  if (sockout != NULL)
-    return;
-
-#ifdef __SIMU_SOCKET__
-
-  int sock;
-  struct sockaddr_in address;
-
-  if ((sock=socket(PF_INET,SOCK_STREAM,IPPROTO_TCP)) < 0)
-    perror("Can't open socket");
-
-  address.sin_family = AF_INET; /* Internet address family */
-  address.sin_addr.s_addr=inet_addr("127.0.0.1"); /* Server IP address */
-  address.sin_port =htons(4242); /* Server port */
-  if (connect(sock, (struct sockaddr*)&address,sizeof(address)) < 0)
-    perror("Je ne peux me connecter au simulateur. Assurez-vous que minepump.tcl s'execute");
-
-  sockin=fdopen(sock,"r");
-  sockout=fdopen(sock,"w");
+  static bool init_done = false;
 
-#else
-  sockout=stdout;
-#endif /* __SIMU_SOCKET__ */
-
-  pthread_mutex_init(&mutex_simu_minepump,0);
+  if (!init_done) {
+    init_done = true;
+    pthread_mutex_init(&mutex_simu_minepump,0);
+  }
 }
 
 /*****************************************************************************/
@@ -55,14 +26,8 @@ readhls (int *hls) {
   int b;
   pthread_mutex_lock (&mutex_simu_minepump);
 
-#ifdef __SIMU_SOCKET__
-  fprintf(sockout,"HLS\n");
-  fflush(sockout);
-  b=fgetc(sockin);
-#else
   WaterLevel_Value = WaterLevel_Value - CmdPump_Value*4 + 2;
   b = (WaterLevel_Value > 100)?1:0;
-#endif /* __SIMU_SOCKET__ */
 
   pthread_mutex_unlock (&mutex_simu_minepump);
   *hls = b;
@@ -73,16 +38,9 @@ readlls(int *lls) {
   InitSimu ();
 
   int b;
-  pthread_mutex_lock (&mutex_simu_minepump);
 
-#ifdef __SIMU_SOCKET__
-  fprintf(sockout,"LLS\n");
-  fflush(sockout);
-  b=fgetc(sockin);
-#else
+  pthread_mutex_lock (&mutex_simu_minepump);
   b = (WaterLevel_Value > 80)?1:0;
-#endif /* __SIMU_SOCKET__ */
-
   pthread_mutex_unlock (&mutex_simu_minepump);
   *lls = b;
 }
@@ -92,25 +50,18 @@ readms(int *ms) {
   InitSimu ();
 
   static int b = 50;
+  static int b_increment = 2;
 
   pthread_mutex_lock (&mutex_simu_minepump);
 
-#ifdef __SIMU_SOCKET__
-  fprintf(sockout,"MS\n");
-  fflush(sockout);
-  b=fgetc(sockin);
-#else
   /* If there is no GUI, we simply emulate the methane sensor. The methane
      gets up and down */
 
-  static int b_increment = 2;
   b += b_increment;
 
   if (b == 100 || b == 40)
     b_increment = - b_increment;
 
-#endif /* __SIMU_SOCKET__ */
-
   pthread_mutex_unlock (&mutex_simu_minepump);
   *ms = b;
 }
@@ -121,11 +72,8 @@ void cmdpump(int cmd) {
 
   pthread_mutex_lock (&mutex_simu_minepump);
   CmdPump_Value = cmd ? 1 : 0;
-#ifndef __SIMU_SOCKET__
-  fprintf(sockout,"WL = %3d\t", WaterLevel_Value);
-#endif /* __SIMU_SOCKET__ */
-  fprintf(sockout,"Pump %d\n",CmdPump_Value);
-  fflush(sockout);
+  printf("Pump %d\n",CmdPump_Value);
+  fflush(stdout);
   pthread_mutex_unlock (&mutex_simu_minepump);
 }
 
@@ -136,7 +84,7 @@ void cmdalarm(int cmd) {
   int c=cmd?1:0; /* c = 0, alarm is off, c = 1, alarm is on */
 
   pthread_mutex_lock (&mutex_simu_minepump);
-  fprintf(sockout,"Alarm %d\t",c);
-  fflush(sockout);
+  printf("Alarm %d\t",c);
+  fflush(stdout);
   pthread_mutex_unlock (&mutex_simu_minepump);
 }