🏎️ FPGA Racing Game

A VHDL-based racing game implementation for the Basys 3 FPGA board. This project uses a custom VGA driver to display the game interface and implements real-time logic for car movement, collision detection, and UART communication to play the game with another player.

🛠️ Hardware Setup

FPGA Board Setup

🏗️ System Architecture

The following block diagram represents the internal hardware structure of the design:

graph LR
    subgraph Top_Level [Top Level: padre.vhd]
        direction LR
        
        %% Driver Logic
        VGA[VGA Driver] --> |X, Y Coordinates| Render
        VGA --> |HS, VS, Blank| VGA_OUT((VGA Connector))
        
        %% Input Processing
        RX_Mod[UART RX] --> |Remote Position| Logic
        Logic[Game Logic / FSM] --> |Player Position| TX_Mod[UART TX]
        Logic --> |Game State| Render
        
        %% Visualization
        subgraph Render [Visualization Pipeline]
            direction TB
            Track[Track Gen]
            P1[Player Car]
            P2[Remote Car]
            Mux[Priority Selector]
        end
        
        %% Internal Wiring
        Logic --> P1
        RX_Mod --> P2
        
        Track --> |RGB| Mux
        P1 --> |RGB| Mux
        P2 --> |RGB| Mux
        
        Mux --> |Final Pixel Color| VGA_OUT
    end

    %% External Inputs
    Controls((Buttons)) --> Logic
    RX_Line((RX Line)) --> RX_Mod
    
    %% External Outputs
    TX_Mod --> TX_Line((TX Line))
    
    CLK((100MHz CLK)) --> VGA
    CLK --> Logic

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Block Diagram of VHDL instances

🎮 Gameplay

Click the image below to watch the gameplay video.

Gameplay Video with the TX and RX lines connected

📂 Project Structure

The repository is organized as follows:

• src/: Source files.
  • hdl/: 🧠 VHDL source code (Logic, FSM, VGA Driver).
  • constraints/: 📐 XDC constraints file for Basys 3.
  • ip/: 🧱 IP Cores and Coefficient files (.coe).
• media/: 📷 Images and videos of the project.
• docs/: 📄 Documentation (Proyecto_FPGA.pdf).

🚀 How to Run

1. Open Vivado.
2. Create a New Project and select the Basys 3 board (Artix-7).
3. Program Device: Connect the Basys 3 board via USB and program it with the generated .bit file.

✨ Features

• 🖥️ VGA Video Output (640x480 @ 60Hz)
• 🚗 Real-time car movement
• 📡 Communication with a remote car via UART
• 💥 Collision detection
• 🔄 Finite State Machines (FSM) for game control

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Developed by Fernando Román, Marta Barroso and José Chaqués | Electronics Systems Course, University of Seville