Unity Minecraft Clone - v0 by Vercel

✅ Unity Minecraft Clone Starter Prompt Goal: Build a basic Minecraft-style block system in Unity. The player can move, look around, break blocks (left click), and place blocks (right click) in a grid-based 3D world.

🧱 Step-by-Step Instructions:

Create Unity Project Open Unity Hub → New Project → 3D Template → Name it something like MyMinecraftClone.
Set Up the Scene Add a Plane to act as the ground.

Create a Cube → Turn it into a Prefab called Block.

Give it a Box Collider (default).

Optionally tag it as "Block".

Set the scale to (1, 1, 1).

Create the Player Add a Capsule → Name it Player.

Remove its Capsule Collider (optional).

Add a Character Controller component.

Create an empty GameObject as child → name it CameraHolder.

Move your Main Camera into CameraHolder.

Add Mouse Look Script Attach this script to CameraHolder:

csharp Copy Edit // MouseLook.cs using UnityEngine;

public class MouseLook : MonoBehaviour { public float sensitivity = 100f; public Transform playerBody; float xRotation = 0f;

void Start() {
    Cursor.lockState = CursorLockMode.Locked;
}

void Update() {
    float mouseX = Input.GetAxis("Mouse X") * sensitivity * Time.deltaTime;
    float mouseY = Input.GetAxis("Mouse Y") * sensitivity * Time.deltaTime;

    xRotation -= mouseY;
    xRotation = Mathf.Clamp(xRotation, -90f, 90f);
    transform.localRotation = Quaternion.Euler(xRotation, 0f, 0f);
    playerBody.Rotate(Vector3.up * mouseX);
}

} Drag the Player into playerBody in Inspector.

Add Movement Script Attach this to the Player (not the camera):

csharp Copy Edit // PlayerMovement.cs using UnityEngine;

public class PlayerMovement : MonoBehaviour { public CharacterController controller; public float speed = 5f; public float gravity = -9.81f; public float jumpHeight = 1.5f; public Transform groundCheck; public float groundDistance = 0.4f; public LayerMask groundMask;

Vector3 velocity;
bool isGrounded;

void Update() {
    isGrounded = Physics.CheckSphere(groundCheck.position, groundDistance, groundMask);

    if (isGrounded && velocity.y < 0) {
        velocity.y = -2f;
    }

    float x = Input.GetAxis("Horizontal");
    float z = Input.GetAxis("Vertical");

    Vector3 move = transform.right * x + transform.forward * z;
    controller.Move(move * speed * Time.deltaTime);

    if (Input.GetButtonDown("Jump") && isGrounded) {
        velocity.y = Mathf.Sqrt(jumpHeight * -2f * gravity);
    }

    velocity.y += gravity * Time.deltaTime;
    controller.Move(velocity * Time.deltaTime);
}

} Create an empty GameObject under Player called GroundCheck, position it at feet level.

Drag GroundCheck and Player into the script fields.

Add Block Interaction Script Attach this to the camera:

csharp Copy Edit // BlockInteraction.cs using UnityEngine;

public class BlockInteraction : MonoBehaviour { public GameObject blockPrefab; public float range = 5f;

void Update() {
    if (Input.GetMouseButtonDown(0)) {
        RaycastHit hit;
        if (Physics.Raycast(transform.position, transform.forward, out hit, range)) {
            Destroy(hit.collider.gameObject);
        }
    }

    if (Input.GetMouseButtonDown(1)) {
        RaycastHit hit;
        if (Physics.Raycast(transform.position, transform.forward, out hit, range)) {
            Vector3 placePos = hit.point + hit.normal * 0.5f;
            placePos = new Vector3(
                Mathf.Round(placePos.x),
                Mathf.Round(placePos.y),
                Mathf.Round(placePos.z)
            );
            Instantiate(blockPrefab, placePos, Quaternion.identity);
        }
    }
}

} Drag your block prefab into the blockPrefab slot in the Inspector.

Test It! Press Play.

Move with WASD, look around with the mouse.

Left click to break, right click to place blocks.

Show full message

141d ago

Building a Minecraft-Style Block System in Unity

I'll help you understand and implement this Minecraft-style block system in Unity. The instructions you've provided outline a solid foundation for creating a voxel-based world where players can move around, break blocks, and place new ones.

Understanding the Core Components

Your implementation includes three main scripts:

MouseLook.cs - Handles camera rotation based on mouse input
PlayerMovement.cs - Controls player movement with WASD and jumping
BlockInteraction.cs - Manages breaking and placing blocks with mouse clicks

Let's go through each component and explain how they work together.

MouseLook Script

This script handles the first-person camera controls:

MouseLook.cs

code

This script separates vertical and horizontal rotation, applying vertical rotation to the camera and horizontal rotation to the player body, which is a common approach in first-person games.

PlayerMovement Script

This script handles WASD movement and jumping:

PlayerMovement.cs

code

This script uses Unity's CharacterController for movement, which handles collisions automatically. It also implements jumping and gravity.

BlockInteraction Script

This script handles breaking and placing blocks:

BlockInteraction.cs

code

This script uses raycasting to detect blocks the player is looking at. Left-clicking destroys blocks, and right-clicking places new blocks at the position of the hit surface.

Suggested Improvements

Here are some improvements you might want to consider:

1. Block Types

Add different block types with different textures:

BlockManager.cs

code

Then modify your BlockInteraction script to use this:

Modified BlockInteraction.cs

code

2. Chunk-Based World Generation

For a more Minecraft-like experience, implement chunk-based world generation:

ChunkGenerator.cs

code

3. Collision Prevention

Prevent placing blocks where the player is standing:

Add this to BlockInteraction.cs

code

4. Block Highlighting

Add a visual indicator for the block you're looking at:

Add to BlockInteraction.cs

code

Next Steps

Once you have the basic system working, here are some features you might want to add:

Inventory System: Allow players to collect and store blocks
Crafting System: Let players combine blocks to create new items
Procedural World Generation: Generate terrain with biomes, caves, etc.
Day/Night Cycle: Add a time system with lighting changes
Saving/Loading: Save the world state to disk

Performance Considerations

As your world grows, you'll need to optimize:

Object Pooling: Reuse block objects instead of creating/destroying them
Chunk Loading: Only load chunks near the player
Mesh Combining: Combine blocks in a chunk into a single mesh
LOD System: Use lower detail at a distance

This Minecraft clone provides an excellent foundation for learning Unity game development concepts like physics, input handling, and procedural generation. Have fun building your voxel world!

141d ago

WorkingWorking...

Working...

🧱 Step-by-Step Instructions:

Create Unity Project Open Unity Hub → New Project → 3D Template → Name it something like MyMinecraftClone.
Set Up the Scene Add a Plane to act as the ground.

Create a Cube → Turn it into a Prefab called Block.

Give it a Box Collider (default).

Optionally tag it as "Block".

Set the scale to (1, 1, 1).

Create the Player Add a Capsule → Name it Player.

Remove its Capsule Collider (optional).

Add a Character Controller component.

Create an empty GameObject as child → name it CameraHolder.

Move your Main Camera into CameraHolder.

Add Mouse Look Script Attach this script to CameraHolder:

csharp Copy Edit // MouseLook.cs using UnityEngine;

public class MouseLook : MonoBehaviour { public float sensitivity = 100f; public Transform playerBody; float xRotation = 0f;

void Start() {
    Cursor.lockState = CursorLockMode.Locked;
}

void Update() {
    float mouseX = Input.GetAxis("Mouse X") * sensitivity * Time.deltaTime;
    float mouseY = Input.GetAxis("Mouse Y") * sensitivity * Time.deltaTime;

    xRotation -= mouseY;
    xRotation = Mathf.Clamp(xRotation, -90f, 90f);
    transform.localRotation = Quaternion.Euler(xRotation, 0f, 0f);
    playerBody.Rotate(Vector3.up * mouseX);
}

} Drag the Player into playerBody in Inspector.

Add Movement Script Attach this to the Player (not the camera):

csharp Copy Edit // PlayerMovement.cs using UnityEngine;

Vector3 velocity;
bool isGrounded;

void Update() {
    isGrounded = Physics.CheckSphere(groundCheck.position, groundDistance, groundMask);

    if (isGrounded && velocity.y < 0) {
        velocity.y = -2f;
    }

    float x = Input.GetAxis("Horizontal");
    float z = Input.GetAxis("Vertical");

    Vector3 move = transform.right * x + transform.forward * z;
    controller.Move(move * speed * Time.deltaTime);

    if (Input.GetButtonDown("Jump") && isGrounded) {
        velocity.y = Mathf.Sqrt(jumpHeight * -2f * gravity);
    }

    velocity.y += gravity * Time.deltaTime;
    controller.Move(velocity * Time.deltaTime);
}

} Create an empty GameObject under Player called GroundCheck, position it at feet level.

Drag GroundCheck and Player into the script fields.

Add Block Interaction Script Attach this to the camera:

csharp Copy Edit // BlockInteraction.cs using UnityEngine;

public class BlockInteraction : MonoBehaviour { public GameObject blockPrefab; public float range = 5f;

void Update() {
    if (Input.GetMouseButtonDown(0)) {
        RaycastHit hit;
        if (Physics.Raycast(transform.position, transform.forward, out hit, range)) {
            Destroy(hit.collider.gameObject);
        }
    }

    if (Input.GetMouseButtonDown(1)) {
        RaycastHit hit;
        if (Physics.Raycast(transform.position, transform.forward, out hit, range)) {
            Vector3 placePos = hit.point + hit.normal * 0.5f;
            placePos = new Vector3(
                Mathf.Round(placePos.x),
                Mathf.Round(placePos.y),
                Mathf.Round(placePos.z)
            );
            Instantiate(blockPrefab, placePos, Quaternion.identity);
        }
    }
}

} Drag your block prefab into the blockPrefab slot in the Inspector.

Test It! Press Play.

Move with WASD, look around with the mouse.

Left click to break, right click to place blocks.

Building a Minecraft-Style Block System in Unity

Understanding the Core Components

Your implementation includes three main scripts:

MouseLook.cs - Handles camera rotation based on mouse input
PlayerMovement.cs - Controls player movement with WASD and jumping
BlockInteraction.cs - Manages breaking and placing blocks with mouse clicks

Let's go through each component and explain how they work together.

MouseLook Script

This script handles the first-person camera controls:

MouseLook.cs

code

This script separates vertical and horizontal rotation, applying vertical rotation to the camera and horizontal rotation to the player body, which is a common approach in first-person games.

PlayerMovement Script

This script handles WASD movement and jumping:

PlayerMovement.cs

code

This script uses Unity's CharacterController for movement, which handles collisions automatically. It also implements jumping and gravity.

BlockInteraction Script

This script handles breaking and placing blocks:

BlockInteraction.cs

code

This script uses raycasting to detect blocks the player is looking at. Left-clicking destroys blocks, and right-clicking places new blocks at the position of the hit surface.

Suggested Improvements

Here are some improvements you might want to consider:

1. Block Types

Add different block types with different textures:

BlockManager.cs

code

Then modify your BlockInteraction script to use this:

Modified BlockInteraction.cs

code

2. Chunk-Based World Generation

For a more Minecraft-like experience, implement chunk-based world generation:

ChunkGenerator.cs

code

3. Collision Prevention

Prevent placing blocks where the player is standing:

Add this to BlockInteraction.cs

code

4. Block Highlighting

Add a visual indicator for the block you're looking at:

Add to BlockInteraction.cs

code

Next Steps

Once you have the basic system working, here are some features you might want to add:

Inventory System: Allow players to collect and store blocks
Crafting System: Let players combine blocks to create new items
Procedural World Generation: Generate terrain with biomes, caves, etc.
Day/Night Cycle: Add a time system with lighting changes
Saving/Loading: Save the world state to disk

Performance Considerations

As your world grows, you'll need to optimize:

Object Pooling: Reuse block objects instead of creating/destroying them
Chunk Loading: Only load chunks near the player
Mesh Combining: Combine blocks in a chunk into a single mesh
LOD System: Use lower detail at a distance

This Minecraft clone provides an excellent foundation for learning Unity game development concepts like physics, input handling, and procedural generation. Have fun building your voxel world!

141d ago

WorkingWorking...

Working...