Gain insights into Solidity fundamentals, the Ethereum network, and blockchain basics. Learn about creating and deploying Play-to-Earn games, overcoming technical challenges, and earning cryptocurrency rewards.

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Ethereum

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Solidity is a high-level programming language used for implementing smart contracts. Solidity is widely-used in developing Play-to-earn (P2E) games. P2E are NFT-gated games on the blockchain, where players can earn cryptocurrency and prizes that have real-world value. The ability to make these games is currently one of the most sought-after skills among blockchain developers.

In this course, you will be introduced to Solidity and the fundamentals of the Ethereum network. This course also gives a preliminary introduction to blockchains so users who don’t have any prior knowledge of it can brush up on their concepts—to assist them in developing and deploying P2E smart contracts in Solidity. Next, this course will also address a few technical challenges that P2E games present. 

By the end of this course, you will be able to create and deploy your own P2E game on an Ethereum test network.

Developing Play-to-Earn Games in Solidity

**(Select all that apply.)** Which types of functions in a base contract are accessible to derived contracts?




(Select all that apply.) Which types of functions in a base contract are accessible to derived contracts?

At least one of its functions is declared but not implemented.

When is a contract marked as <code>abstract</code>?

We forget to include the `nonReentrant` modifier in every function in our contract.

A malicious callee of one of our functions calls back and attempts to drain funds.

When does a reentrancy attack occur?

It gets executed before any other function.

It replaces a `virtual` function of the same name declared in a base contract.

It replaces all functions in a base contract.

What does a function of type `override` do?

What does a function of type <code>override</code> do?

Returns the ID of the `j`th NFT owned by address `i` in the collection

Returns the ID of the `i`th NFT owned by address `j` in the collection

Returns the IDs of all NFTs owned by address `i` in the collection

Returns the IDs of all NFTs owned by address `j` in the collection

In an ERC721Enumerable NFT contract, what does the `tokenOfOwnerByIndex(i,j)` function do?

In an ERC721Enumerable NFT contract, what does the <code>tokenOfOwnerByIndex(i,j)</code> function do?

Introduction

Ethereum Fundamentals

Solidity Smart Contract Structure and Syntax

Inheritance

Off-Chain Oracles

Putting it All Together: The Treasure Hunt Game

Conclusion

Quiz: Inheritance