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Rework monster decision code #109

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demoth opened this issue Jan 16, 2024 · 0 comments
Open

Rework monster decision code #109

demoth opened this issue Jan 16, 2024 · 0 comments
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ai Enemy or Character behavior gamemod game logic related

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@demoth
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demoth commented Jan 16, 2024 •
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Implement a composable monster ai decisioning using Behavior Trees

Character behaviors:

  • idle states - fidget/stand
  • react to damage - pain/dead state
  • walking/running
  • melee attack
  • ranged attack
  • TODO: "sliding"
  • TODO: jump
  • TODO: flying / swimming
  • TODO: specials (medic)
  • TODO: path target and combat target
  • TODO: bosses

Priorities:

  1. if triggered & has combat point -> go to combat point
  2. if triggered & see enemy & fired at -> duck
  3. if triggered & see enemy -> attack enemy
  4. if triggered & !see enemy -> chase
  5. if !triggered & has path-target -> goto path-target
  6. else: Idle
@demoth demoth added ai Enemy or Character behavior gamemod game logic related labels Jan 16, 2024
@demoth demoth mentioned this issue Jan 16, 2024
Open
demoth added a commit that referenced this issue Jan 16, 2024
@demoth
Rework monster decision code #109: PoC introduce Behavior tree
d00c3f9 
follower ai - follows the attacker, work only along straight lines
demoth added a commit that referenced this issue Jan 16, 2024
@demoth
Rework monster decision code #109: PoC introduce Behavior tree
4056867 
wip melee attack - no hit event yet
demoth added a commit that referenced this issue Jan 16, 2024
@demoth
Rework monster decision code #109: PoC introduce Behavior tree
2b80649 
wip melee attack + hit event
demoth added a commit that referenced this issue Jan 16, 2024
@demoth
Rework monster decision code #109: better name for behavior tree nodes
160e555
demoth added a commit that referenced this issue Jan 16, 2024
@demoth
Rework monster decision code #109: drafting the BT decision outcomes
a052036
demoth added a commit that referenced this issue Jan 16, 2024
@demoth
Rework monster decision code #109: BtNodeState
0c21986 
Instead of boolean. Support for continuous node execution
demoth added a commit that referenced this issue Jan 16, 2024
@demoth
Rework monster decision code #109: continuous task
51a330c 
Leaf nodes now can return a continuous task: `BtActionTask`(for a certain number of frames) and `BtWaitingTask` (until an event is received).
 This is a way of saving a state of the BT which was completely stateless before (previously each execution of BT could result in a different decision every frame, even though the character's state machine is unlikely to change so quickly).

 BT is now wrapped into a `BtContext`, which is a combination of a BT and a current task (if exists).

 As an example, when the BT decides to initiate an attack, it would keep this decision until the attack is finished.
demoth added a commit that referenced this issue Jan 16, 2024
@demoth
Rework monster decision code #109: attack or chase
62fd1ab 
Monster can now decide to shoot or run for a certain duration towards the target. Previously, continuous running was possible only as a fallback (because there was no state, no place to store current decision).

Plus some random docs & comments
demoth added a commit that referenced this issue Jan 27, 2024
@demoth
Rework monster decision code #109: cleanup & refactoring
2535e0b 
move enemy knowledge variables to `.monsterinfo` structure from Game object into the Entity
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