If you need more states, you can make this more formal however, you’ll add complexity. This is a basic implementation of the State Machine pattern.

ExitState: Cleans up the current state and calls EnterState of the next state.

Update: Performs the raycast as the mouse moves.

EnterState: Does the setup for this activation.

TileSelector will help select which piece to move, and MoveSelector will help pick a destination.īoth components have the same basic methods: You’ll add two new scripts to handle this functionality. Once the player selects a piece, you need to generate valid tiles where the piece can move. If you aren’t familiar with raycasting in Unity, check out our Introduction to Unity Scripting tutorial or our popular Bomberman tutorial. Raycasting is a way to find out which tile the user is mousing over. The first step is figuring out which piece to move. Take a look at AddPiece, PieceAtGrid and GridForPiece to see how this works.Įnter play mode to view the board and get the pieces set up and ready to go. GameManager stores a 2D array named pieces that tracks where the pieces are located on the board. It’s a singleton, so it’s easy for other classes to call it.

GameManager.cs: Stores game logic such as allowed moves, the initial arrangement of the pieces at the start of the game and more.

It also contains logic to determine the valid moves in the game. Piece.cs: The base class that defines enumerations for any instantiated pieces.It also holds the direction of play for pieces where direction matters, such as pawns. Player.cs: Keeps track of the player’s pieces, as well as the pieces a player has captured.Geometry.cs: Utility class that handles the conversion between row and column notation and Vector3 points.This component also handles the highlighting of individual pieces. Board: Keeps track of the visual representations of the pieces.Scripts: Contains the components that have already been attached to objects in the Hierarchy.Materials: Includes materials for the chess board, the chess pieces and the tile overlays.Prefabs: Includes the board, the individual pieces and the indicator squares that will be used in the move selection process.These objects already have scripts attached. You’ll see a Board object representing the game board and an object for the GameManager. Open the Main scene in the Scenes folder. However, this version is 3D to mimic sitting at a table playing with your friend. Open the starter project in Unity to get going.Ĭhess is often implemented as a simple 2D game. You can find a link at the top and the bottom of this page. If you want to skill up in C#, the Beginning C# with Unity Screencast series is a great place to start.ĭownload the project materials for this tutorial. Note: You should have some familiarity with Unity and the C# language.

Battle chess game design