Copter: implement set_target_location method

ArduCopter/Copter.cpp

@@ -271,6 +271,17 @@ void Copter::fast_loop()
     }
 }
 
+// set target location (for use by scripting)
+bool Copter::set_target_location(const Location& target_loc)
+{
+    // exit if vehicle is not in Guided mode or Auto-Guided mode
+    if (!flightmode->in_guided_mode()) {
+        return false;
+    }
+
+    return mode_guided.set_destination(target_loc);
+}
+
 // rc_loops - reads user input from transmitter/receiver
 // called at 100hz
 void Copter::rc_loop()

ArduCopter/Copter.h

@@ -636,6 +636,7 @@ private:
                              uint8_t &task_count,
                              uint32_t &log_bit) override;
     void fast_loop() override;
+    bool set_target_location(const Location& target_loc) override;
     void rc_loop();
     void throttle_loop();
     void update_batt_compass(void);