Save slot management in Unity - Mini Project: Build & Apply

Save slot management

📖 Scenario: Imagine you are making a simple game where players can save their progress in different slots. Each slot stores the player's name and their score.

🎯 Goal: You will create a system to manage three save slots using a dictionary. You will set up the slots, add a new save, update a save, and finally display all saved slots.

📋 What You'll Learn

Create a dictionary called saveSlots with three slots named Slot1, Slot2, and Slot3 each holding a player's name and score.

Create a variable called newSave that holds a player's name and score to add or update a slot.

Write code to update Slot2 with the newSave data.

Print all save slots with their player names and scores.

💡 Why This Matters

🌍 Real World

Games often let players save progress in multiple slots. Managing these saves with dictionaries helps organize player data clearly.

💼 Career

Understanding how to store and update nested data structures is important for game development and many software applications.

1

Create initial save slots dictionary

Create a dictionary called saveSlots with these exact entries: "Slot1" with player name "Alice" and score 100, "Slot2" with player name "Bob" and score 150, and "Slot3" with player name "Charlie" and score 120. Use a dictionary where each slot key maps to another dictionary with keys "playerName" and "score".

Unity

# Create the saveSlots dictionary with 3 slots and player data
# Your code here

Need a hint?

Use a dictionary where each slot key maps to another dictionary holding "playerName" and "score".

2

Create new save data

Create a dictionary called newSave with player name "Diana" and score 180 to represent new save data.

Unity

using System.Collections.Generic;

Dictionary> saveSlots = new Dictionary>
{
    { "Slot1", new Dictionary { { "playerName", "Alice" }, { "score", 100 } } },
    { "Slot2", new Dictionary { { "playerName", "Bob" }, { "score", 150 } } },
    { "Slot3", new Dictionary { { "playerName", "Charlie" }, { "score", 120 } } }
};

// Create the newSave dictionary with playerName "Diana" and score 180
// Your code here

Need a hint?

Create a dictionary with keys "playerName" and "score" for the new save.

3

Update Slot2 with new save data

Update the saveSlots dictionary so that "Slot2" now holds the data from newSave.

Unity

using System.Collections.Generic;

Dictionary> saveSlots = new Dictionary>
{
    { "Slot1", new Dictionary { { "playerName", "Alice" }, { "score", 100 } } },
    { "Slot2", new Dictionary { { "playerName", "Bob" }, { "score", 150 } } },
    { "Slot3", new Dictionary { { "playerName", "Charlie" }, { "score", 120 } } }
};

Dictionary newSave = new Dictionary { { "playerName", "Diana" }, { "score", 180 } };

// Update Slot2 with newSave data
// Your code here

Need a hint?

Assign newSave to saveSlots["Slot2"] to update the slot.

4

Print all save slots

Use a foreach loop to print each slot name, player name, and score from the saveSlots dictionary. Format each line as: Slot1: Alice - 100.

Unity

using System.Collections.Generic;
using System;

Dictionary> saveSlots = new Dictionary>
{
    { "Slot1", new Dictionary { { "playerName", "Alice" }, { "score", 100 } } },
    { "Slot2", new Dictionary { { "playerName", "Bob" }, { "score", 150 } } },
    { "Slot3", new Dictionary { { "playerName", "Charlie" }, { "score", 120 } } }
};

Dictionary newSave = new Dictionary { { "playerName", "Diana" }, { "score", 180 } };

saveSlots["Slot2"] = newSave;

// Print all save slots with player names and scores
// Your code here

Need a hint?

Use a foreach loop over saveSlots. Access player name and score from the inner dictionary and print them.