Change to invoke orca_run and reject bad time args

cli_main.c

@@ -1,5 +1,6 @@
 #include "base.h"
 #include "field.h"
+#include "sim.h"
 #include <getopt.h>
 
 int main(int argc, char** argv) {
@@ -16,7 +17,13 @@ int main(int argc, char** argv) {
     switch (c) {
     case 't':
       ticks = atoi(optarg);
+      if (ticks == 0 && strcmp(optarg, "0")) {
+        fprintf(stderr, "Bad time argument %s\n", optarg);
+        return 1;
+      }
       break;
+    case '?':
+      return 1;
     }
   }
 
@@ -58,6 +65,9 @@ int main(int argc, char** argv) {
     fprintf(stderr, "File load error: %s\n", errstr);
     return 1;
   }
+  for (int i = 0; i < ticks; ++i) {
+    orca_run(&field);
+  }
   field_fput(&field, stdout);
   field_deinit(&field);
   return 0;