STEP 4 — Building a Full Decision System

Alright, coder — this is the moment your game stops being a simple “if this, then that” machine and starts acting like it actually understands what’s happening.

This step is all about combining everything:

• conditions
• comparisons
• logical operators
• lists

…to build a decision system —the same kind of logic that powers battles, quests, shops,
puzzles, and every “choose your path” moment in games.

Let’s build one.

1. Scenario — A Player Encounters an Enemy

Your game needs to decide:

• Can the player fight?
• Should they run?
• Do they have the right items?
• Are they strong enough?

This is where your game’s brain kicks in.

2. Combining Conditions + Lists + Logic

Here’s a full decision system in action:

health = 45
inventory = ["sword", "potion", "map"]
enemy = "goblin"

if health > 50 and "sword" in inventory:
    print("You engage the goblin confidently.")
elif health <= 50 and "potion" in inventory:
    print("You drink a potion before fighting.")
elif "sword" not in inventory:
    print("You have no weapon. You run away.")
else:
    print("You decide to avoid the fight for now.")

Your game is now thinking like this:

• “Health is good AND you have a sword? Go fight.”
• “Health is low BUT you have a potion? Heal first.”
• “No sword? Absolutely not, we’re leaving.”
• “Otherwise… maybe don’t fight a goblin today.”

This is real game logic — branching, reactive, and smart.

3. Why This Matters

This step unlocks:

• battle systems
• shop systems
• quest requirements
• puzzle logic
• dialogue choices
• branching storylines

Basically, everything that makes a game feel alive and responsive. You are now building the
core decision engine behind every modern game.

health = 30
inventory = ["key", "torch"]
door_locked = True