changed to only update one plant, copied and renamed some code from last year's wrist
diff --git a/frc971/control_loops/shooter/shooter.cc b/frc971/control_loops/shooter/shooter.cc
new file mode 100644
index 0000000..3d3e7ae
--- /dev/null
+++ b/frc971/control_loops/shooter/shooter.cc
@@ -0,0 +1,80 @@
+#include "frc971/control_loops/shooters/shooters.h"
+
+#include <stdio.h>
+
+#include <algorithm>
+
+#include "aos/common/control_loop/control_loops.q.h"
+#include "aos/common/logging/logging.h"
+
+#include "frc971/constants.h"
+#include "frc971/control_loops/shooters/top_shooter_motor_plant.h"
+#include "frc971/control_loops/shooters/bottom_shooter_motor_plant.h"
+
+namespace frc971 {
+namespace control_loops {
+
+ShooterMotor::ShooterMotor(control_loops::ShooterLoop *my_shooter)
+    : aos::control_loops::ControlLoop<control_loops::ShooterLoop>(my_shooter),
+      zeroed_joint_(MakeShooterLoop()) {
+  {
+    using ::frc971::constants::GetValues;
+    ZeroedJoint<1>::ConfigurationData config_data;
+
+    config_data.lower_limit = GetValues().shooter_lower_limit;
+    config_data.upper_limit = GetValues().shooter_upper_limit;
+    config_data.hall_effect_start_angle[0] =
+        GetValues().shooter_hall_effect_start_angle;
+    config_data.zeroing_off_speed = GetValues().shooter_zeroing_off_speed;
+    config_data.zeroing_speed = GetValues().shooter_zeroing_speed;
+
+    config_data.max_zeroing_voltage = 5.0;
+    config_data.deadband_voltage = 0.0;
+
+    zeroed_joint_.set_config_data(config_data);
+  }
+}
+
+// Positive angle is up, and positive power is up.
+void ShooterMotor::RunIteration(
+    const ::aos::control_loops::Goal *goal,
+    const control_loops::ShooterLoop::Position *position,
+    ::aos::control_loops::Output *output,
+    ::aos::control_loops::Status * status) {
+
+  // Disable the motors now so that all early returns will return with the
+  // motors disabled.
+  if (output) {
+    output->voltage = 0;
+  }
+
+  ZeroedJoint<1>::PositionData transformed_position;
+  ZeroedJoint<1>::PositionData *transformed_position_ptr =
+      &transformed_position;
+  if (!position) {
+    transformed_position_ptr = NULL;
+  } else {
+    transformed_position.position = position->pos;
+    transformed_position.hall_effects[0] = position->hall_effect;
+    transformed_position.hall_effect_positions[0] = position->calibration;
+  }
+
+  const double voltage = zeroed_joint_.Update(transformed_position_ptr,
+    output != NULL,
+    goal->goal, 0.0);
+
+  if (position) {
+    LOG(DEBUG, "pos: %f hall: %s absolute: %f\n",
+        position->pos,
+        position->hall_effect ? "true" : "false",
+        zeroed_joint_.absolute_position());
+  }
+
+  if (output) {
+    output->voltage = voltage;
+  }
+  status->done = ::std::abs(zeroed_joint_.absolute_position() - goal->goal) < 0.004;
+}
+
+}  // namespace control_loops
+}  // namespace frc971