Updated so ScriptTrader can just buy as well.

Set port[1] == 0, and trades.foe[x] = true to what we
need to buy.

scripts.cpp

@@ -15,10 +15,17 @@ void ScriptTrader::activate(void) {
   auto port_info = director.galaxy.ports.find(port[0]);
   int port0_type = port_info->second.type;
   port_buysell[0] = get_buysell(port0_type);
-  port_info = director.galaxy.ports.find(port[1]);
-  int port1_type = port_info->second.type;
-  port_buysell[1] = get_buysell(port1_type);
-  BUGZ_LOG(fatal) << port0_type << " and " << port1_type;
+
+  // Special case - we just want to buy resources
+  if (port[1] != 0) {
+    port_info = director.galaxy.ports.find(port[1]);
+    int port1_type = port_info->second.type;
+    port_buysell[1] = get_buysell(port1_type);
+    BUGZ_LOG(fatal) << port0_type << " and " << port1_type;
+  } else {
+    BUGZ_LOG(fatal) << "Just buy from " << port[0];
+  }
+
   /*
   auto ttr = director.galaxy.trade_type_info(port0_type, port1_type);
   trades = ttr.trades;
@@ -198,7 +205,8 @@ void ScriptTrader::server_prompt(const std::string &prompt) {
       // Which port to trade with first?  examine trades
       BUGZ_LOG(fatal) << "trades: " << trades;
       BUGZ_LOG(fatal) << "port0:" << text_from_buysell(port_buysell[0]);
-      BUGZ_LOG(fatal) << "port1:" << text_from_buysell(port_buysell[1]);
+      if (port[1] != 0)
+        BUGZ_LOG(fatal) << "port1:" << text_from_buysell(port_buysell[1]);
 
       // Ok, I might still need this (so I know what port to start with)
       // which is selling?
@@ -213,6 +221,9 @@ void ScriptTrader::server_prompt(const std::string &prompt) {
           all_holds_empty = true;
       }
 
+      if (port[1] == 0) {
+        active_port = port[0];
+      } else {
       if (!all_holds_empty) {
         for (int x = 0; x < 3; ++x) {
           if (director.galaxy.meta["ship"]["holds"][foe[x]]) {
@@ -247,6 +258,7 @@ void ScriptTrader::server_prompt(const std::string &prompt) {
           }
         }
       }
+      }
 #ifdef NO_JUST_TRADES
       // Do we have what they are buying?
       bool have_buy = false;
@@ -317,9 +329,6 @@ void ScriptTrader::server_prompt(const std::string &prompt) {
         to_server(move);
         return;
       }
-
-      // for now...
-      deactivate();
     }
 
     if (state == 2) {
@@ -432,8 +441,13 @@ void ScriptTrader::server_prompt(const std::string &prompt) {
       // 1.) CHECK TURNS // need turn tracking
       // 2.) PORTS BURNT?
 
-      if (active_port == port[0])
+      if (active_port == port[0]) {
+        if (port[0] == 0) {
+          deactivate();
+          return;
+        }
         active_port = port[1];
+    }
       else
         active_port = port[0];