AI Design:
Knight Duel
This is the first boss fight I ever made.
A cursed Knight was found inside a village and the local villager managed to trap it inside the church. You, as a holy Knight, need to defeat it for the good of the people.
The intention of the design is to build an AI system that not only make decisions based on player's action but also forces player to adjust their decisions accordingly so an emerging gameplay is generated.
FSM Design
There's Six States embedded in this AI system. They loop and transfer back and forth between eachother based on the informations collected from the player
These States are: Idle State / Distance Adjust State / Normal Attack State / Defence State / Break Defence State / Periodic Behavior State
Default state: Idling
What: Stay at the initial location and loop Idle Animation
When: When the player is outside the detection range, determined by the Detection range variable.
Function: HP / Stamina fully charge in this state, idle animation playing
Transition: When player inside the detection range, transfer to one of the “Battle” states
State: Adjusting Position
what: Move towards the player / move away from the player
when: When player either too far from the AI (outside the attack distance) or player too close to the AI.
Function: AI adjusts its position by either moving backward or forward until it gets to a proper position that allows it to attack player.
Transition: Transfer to attack mode when get far / close enough to player
State: Normal Attack
What: Start attacking the player by Normal Slash
When: When player inside the attack distance
Function: Attack player
Transition:
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if player attacking - transfer to defense state
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if player defending - transfer to break defense state or keep attacking
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if performed more than 5 normal attack transfer to periodic behavior
State: Defence
what: Block player’s attack by shield
when: When player is attacking
Function: Block the incoming attack
Transition:
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if player keep attacking - defense
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When player ends attack - attack player
or transfer to periodic behavior
State: Break Player Defence
what: Break player defense by either Heavy Slash or Combo Slash
when: When player is Defencing
Function: Break player defense
Transition:
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When player stop defecing, transfer to either Normal Attack State or Adjust Distance State
State: Periodic Behavior
what: AI perform a sequence of action that act as a combo / skill
when: The periodic Behavior happens every 5 Normal Slash
Function: Transfer to one of the Three Periodic Behavior: Combo Slash / Charged Slash / Recover Stamina
Transition: Randomly select one periodic behavior and execute it. After execution, back to one of the following state depends on the player’s relative position:
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Normal attack
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Adjust distance
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Periodic Behavior
