🥊 Episode 9 · Advanced · AI

Teach It to Think
Episode 9: AI

A fighter with no brain just stands there. The AI is a set of rules that decides when to attack, block and back off. Make it beatable but not boring.

👶 Ages 10+ ⏱️ ~1 hour 🥊 MUGEN ✓ Free workshop
🤖 AI rules 📏 Distance 🛡️ Blocking ⚖️ Difficulty
🤖 Start Step 1 ← All Episodes
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Ember says: good AI is good rules, not magic. Decide what the fighter should do at close, mid and far range, and you are most of the way there.
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How MUGEN AI Works
Special commands
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Goal for this step

Understand that AI is your own code deciding.

  • 1When the computer controls a fighter, the engine lets your commands fire by themselves.
  • 2You write AI rules that use the same commands a player would.
  • 3The AILevel value tells you how hard the CPU is set to play.
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Fill in the Blanks
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The difficulty of the CPU is read from .
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Knowledge Check
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What does MUGEN AI actually use?
AThe same commands a player uses, fired by your rules
BA hidden neural network
CThe internet
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React to Distance
Close, mid, far
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Goal for this step

Decide behaviour by how far the enemy is.

  • 1Find the distance between the fighters each moment.
  • 2Far: walk forward. Mid: approach or poke. Close: attack or block.
  • 3Three ranges make an AI that reads well.
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Fill in the Blanks
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A simple AI thinks in three ranges: far, mid and .
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Knowledge Check
+15 XP
A simple, readable AI divides the fight into how many ranges?
AThree
BTwenty
CNone
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🛡️
Block and Punish
Not just attacking
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Goal for this step

Make the AI block sometimes.

  • 1An AI that only attacks is easy to beat.
  • 2Block when the enemy is attacking, then attack back when they stop.
  • 3A little randomness makes it feel alive, not robotic.
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Fill in the Blanks
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An AI should as well as attack.
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Knowledge Check
+15 XP
Why should an AI sometimes block?
AAn AI that only attacks is too easy to beat
BBlocking looks nice
CIt is required
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Balance the Difficulty
Fun, not unfair
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Goal for this step

Tune the AI so it is beatable.

  • 1A perfect AI is no fun. Leave gaps.
  • 2Use AILevel so a hard setting acts more often than an easy one.
  • 3Play against it five times and see if you ever lose. Adjust.
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Fill in the Blanks
+15 XP
A perfect AI that never misses is fun to fight.
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Knowledge Check
+15 XP
What is the goal of AI difficulty?
ABeatable but interesting
BImpossible to beat
CNever attack
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Your Fighter Thinks!
The CPU can now fight. The last step is to put everything together into a complete game.
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Next: Episode 10: Build the Whole Game →