1 files changed, 113 insertions, 0 deletions
diff --git a/Assets/Scripts/Controllers/GameController.cs b/Assets/Scripts/Controllers/GameController.cs
new file mode 100644
index 0000000..2ae5f21
--- /dev/null
+++ b/Assets/Scripts/Controllers/GameController.cs
@@ -0,0 +1,113 @@
+using System;
+using UnityEngine;
+
+namespace Controllers
+{
+  /// <summary>
+  /// The controller for the basketball-game logic.
+  /// </summary>
+  public class GameController : MonoBehaviour
+  {
+    private State state = State.JumpBall; // A basketball game always starts with a jump ball.
+
+    public Player player;
+    public Player enemy;
+    
+    /// <summary>
+    /// The single ball for the game.
+    /// </summary>
+    [SerializeField] private Ball ball;
+
+    private void Awake()
+    {
+      player = new Player { isEnemy = false, controller = this };
+      enemy = new Player { isEnemy = true, controller = this };
+      ball.controller = this;
+    }
+    
+    public struct Player
+    {
+      /// <summary>
+      /// Whether this player is the AI-enemy.
+      /// </summary>
+      internal bool isEnemy;
+      
+      /// <summary>
+      /// A back-reference to the containing GameController.
+      /// </summary>
+      internal GameController controller;
+      
+      private State dribble => isEnemy ? State.EnemyDribble : State.PlayerDribble;
+      private State shoot => isEnemy ? State.EnemyShoot : State.PlayerShoot;
+
+      /// <summary>
+      /// When dribbling, move the ball with the player.
+      /// </summary>
+      /// <param name="handPosition">The position of the hand dribbling the ball.</param>
+      public void Move(Vector2 handPosition)
+      {
+        if (controller.state == (isEnemy ? State.EnemyDribble : State.PlayerDribble)) // Make sure they're dribbling.
+          controller.ball.transform.position = handPosition; // TODO: Make this perform a dribbling motion, otherwise it looks like they're travelling.
+      }
+
+      /// <summary>
+      /// Grab the ball if possible given the current game state.
+      /// </summary>
+      /// <param name="handPosition">The position of the hand to attempt grabbing from.</param>
+      /// <returns>Whether or not the ball was able to be picked up.</returns>
+      public bool GrabBall(Vector2 handPosition)
+      { 
+        // Don't allow the ball to be picked up if someone shot it. Also don't try picking it up if we're already holding it.
+        if (controller.state.IsShot() || controller.state == dribble) return false;
+        
+        // Make sure its within their grab area.
+        if (Vector2.Distance(controller.ball.transform.position, handPosition) > 0.75f) return false;
+        
+        controller.state = dribble;
+        Move(handPosition);
+        return true;
+      }
+
+      /// <summary>
+      /// Shoot the ball if possible.
+      /// </summary>
+      /// <param name="playerTransform"></param>
+      /// <returns>Whether or not the ball was shot</returns>
+      public bool Shoot(Transform playerTransform)
+      {
+        if (controller.state != dribble) return false; // We must be dribbling the ball to shoot it.
+        controller.state = shoot;
+        controller.ball.Shoot(playerTransform);
+        return true;
+      }
+    }
+
+    internal void BallDropped()
+    {
+      state = State.Idle;
+    }
+
+    internal enum State
+    {
+      Idle,
+      JumpBall,
+      PlayerDribble,
+      PlayerShoot,
+      EnemyDribble,
+      EnemyShoot,
+    }
+  }
+
+  internal static class GameControllerStateExtensions
+  {
+    internal static bool IsShot(this GameController.State state)
+    {
+      return state == GameController.State.EnemyShoot || state == GameController.State.PlayerShoot;
+    }
+    
+    internal static bool IsDribble(this GameController.State state)
+    {
+      return state == GameController.State.EnemyDribble || state == GameController.State.PlayerDribble;
+    }
+  }
+}