irrlichtandClaude Opus 5
03a12c82dc
NPC strategy is now a Brain field on the entity (Idle, Wander, Hunt(Prey)) that Sim::think matches on, so behavior is data independent of species. Hunt follows the first step of an A* route to the nearest prey in sight, replanned every window; the pathfinder moves from game/ to sim/ for that. A greedy step-toward-target was tried first and oscillated at walls. Bumps between the same species no longer fight, and six foxes join the hens. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
55 lines
1.4 KiB
Rust
Executable File
55 lines
1.4 KiB
Rust
Executable File
/// Who decides an entity's actions. The sim only schedules intents for `Npc`s; a
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/// `Player`'s intents come from outside (input) through `Sim::set_action`.
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#[derive(Clone, Copy, PartialEq, Eq, Debug)]
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pub enum EntityKind {
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Player,
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Npc,
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}
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/// What a hunter goes after.
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#[derive(Clone, Copy, PartialEq, Eq, Debug)]
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pub enum Prey {
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Player,
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Kind(u16),
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}
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/// The decision strategy `Sim::think` runs for an NPC. Data, not code: it can be
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/// swapped at runtime (a hit hen may start fleeing) and serializes with the entity.
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#[derive(Clone, Copy, PartialEq, Eq, Debug)]
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pub enum Brain {
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/// Never schedules anything — the player, furniture.
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Idle,
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/// Occasionally a random king move.
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Wander,
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/// Step toward the nearest prey in sight, bumping into it on contact. Wanders
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/// when nothing is in sight.
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Hunt(Prey),
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}
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pub struct Entity {
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pub id: u32,
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pub kind: EntityKind,
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pub type_id: u16, // sprite index into the entity tileset; also the species
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pub brain: Brain,
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pub pos: (i16, i16),
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pub hp: u16,
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pub hp_max: u16,
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/// Damage dealt per bump.
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pub attack: u16,
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}
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impl Entity {
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pub fn new(id: u32, kind: EntityKind, type_id: u16, brain: Brain, pos: (i16, i16), hp: u16, attack: u16) -> Self {
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Self {
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id,
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kind,
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type_id,
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brain,
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pos,
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hp,
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hp_max: hp,
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attack,
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}
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}
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}
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