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import { System, SystemNames } from ".";
import { ComponentNames, Grid, RadialObserve } from "../components";
import { Entity, EntityNames } from "../entities";
import { Game } from "../Game";
import { cartesianDistance } from "../interfaces";
const radialObservations: Record<string, Set<string>> = {
TODO: new Set([]),
};
export class RadialObserver extends System {
constructor() {
super(SystemNames.RadialObserver);
}
public update(_dt: number, game: Game) {
game.forEachEntityWithComponent(ComponentNames.RadialObserve, (entity) => {
if (!(entity.name in radialObservations)) {
return;
}
const observable = radialObservations[entity.name];
const entityObserve = entity.getComponent<RadialObserve>(
ComponentNames.RadialObserve,
);
if (!entityObserve.onObservation) {
return;
}
const entityPosition = entity.getComponent<Grid>(
ComponentNames.Grid,
).gridPosition;
const observations: Entity[] = [];
game.forEachEntityWithComponent(ComponentNames.RadialObserve, (other) => {
if (entity === other) {
return;
}
if (!observable.has(other.name)) {
return;
}
const otherPosition = other.getComponent<Grid>(
ComponentNames.Grid,
).gridPosition;
if (
cartesianDistance(entityPosition, otherPosition) >
entityObserve.radius
) {
return;
}
observations.push(other);
});
for (const observation of observations) {
entityObserve.onObservation!(game, observation);
}
});
}
}
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