PEX_TODO.md

Create a RPS Nada Program

We'll use the nada tool to create a new project

https://docs.nillion.com/nada

1. Create an rps nada project

nada init rps

2. Go into the rps folder

cd rps

3. Write the RPS program in main.py (if you get stuck, check nada/src/main.py)

• Initialize 2 parties: computer and player

party_computer = Party(name="Computer")
party_player = Party(name="Player")

• Add each player's choice as a named SecretInput

choice_computer = SecretInteger(Input(name="choice_computer", party=party_computer))
choice_player_2 = SecretInteger(Input(name="choice_player_2", party=party_player))

• Adjust choice values (original secrets can't be 0 values)

adjusted_choice_computer = (choice_computer - Integer(10)) % Integer(3)
adjusted_choice_player_2 = (choice_player_2 - Integer(10)) % Integer(3)

• Compute result

result = (adjusted_choice_computer - adjusted_choice_player_2 + Integer(3)) % Integer(3)

• Determine winner

winner = (
    (result > Integer(0)).if_else(
        (result > Integer(1)).if_else(Integer(2), Integer(1)),
        Integer(0)
    )
)

• Create an output variable

out = Output(winner, "game_result", party_computer)

• Return the output

return [out]

4. Build (compile) the program

nada build

5. Generate a test file

nada generate-test --test-name test_r_p main

6. Modify and run test

nada test test_r_p