Combining Everything

STEP 4 — Combining Everything (a.k.a. Building Real Game Abilities)

Great! Step 4 is here — the final boss of Unit 5.

This is where functions stop being “cute little helpers” and start becoming full game systems.

We’re talking parameters + returns + loops + conditions all teaming up like the Avengers of Python.

Let’s finish this unit with fireworks.

1. Example: A Real Attack Function

Let’s build an attack that:

  • takes damage as input
  • calculates bonus damage
  • returns the final hit
  • prints the result
def attack(base_damage):
    bonus = 5
    total = base_damage + bonus
    print("You strike for", total, "damage!")
    return total

hit = attack(10)

Now you can do:
hit = attack(10)
Your function just did math, printed action text, AND returned the final number.
Triple threat.

Try running the attack function

2. Example: A Healing Function With Conditions

def heal(health, amount):
    health = health + amount
    if health > 100:
        health = 100
    return health

health = heal(80, 30)
print("New health:", health)

Call it like:
health = heal(80, 30)
print(“New health:”, health)
Your game now heals responsibly.
No overpowered nonsense.

Try running the healing function

3. Example: Looping Through Enemies With a Function

def introduce(enemy):
    print("A wild", enemy, "appears!")

enemies = ["goblin", "orc", "slime"]

for e in enemies:
    introduce(e)

Your game now introduces enemies like it’s hosting a fantasy runway show.

Try running the enemy introduction

4. Example: Full Mini-System — Battle Turn

def take_turn(health, damage):
    health = health - damage
    print("Enemy hits you for", damage)
    print("Your health is now", health)
    return health

health = 50

while health > 0:
    health = take_turn(health, 10)

This is an actual battle loop.
You just built a tiny Role-Playing Game (RPG) engine.

Try running the battle system

Practice (Your Turn!)

Mini Challenge

Create a function called use_potion(health, amount) that:

  • heals the player
  • caps health at 100
  • returns the new health

Then call it inside a loop until health reaches 100.

Modify and Run

Boom.
You just built a healing system.

End of Unit 5 — You Now Have Superpowers

You can now:

  • define functions
  • customize them with parameters
  • get results with return values
  • combine them with loops, lists, and conditions
  • build REAL gameplay systems

Your code is officially leveling up.

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