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Starship Simulator Controls thoriumsim.com
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2.9 kB · 99 lines
TypeScript
at develop
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100import { pubsub } from "@thorium/.server/init/pubsub";import { type Entity, System } from "@thorium/utils/ecs";import { pursue } from "@thorium/utils/starmap/steering";import { Vector3 } from "three";
const positionVector = new Vector3();const targetPositionVector = new Vector3();const velocityVector = new Vector3();const newVelocityVector = new Vector3();const targetVelocityVector = new Vector3();export class TorpedoMovementSystem extends System { static flightMode = ["nova"]; test(entity: Entity) { return !!entity.components.isTorpedo; } update(entity: Entity, deltaTime: number) { const deltaInSeconds = deltaTime / 1000; const component = entity.components.isTorpedo; if (!component) return;
const { speed, maxForce } = component; const mass = entity.components.mass?.mass || 1500; { const { x, y, z } = entity.components.position || { x: 0, y: 0, z: 0 }; positionVector.set(x, y, z); } { const { x, y, z } = entity.components.velocity || { x: 0, y: 0, z: 0 }; velocityVector.set(x, y, z); } const target = component.targetId ? this.ecs.getEntityById(component.targetId) : null; // If there's no target, continue traveling at the current velocity if (!target) { this.handleTorpedoDistance( entity, component.distanceTraveled, deltaInSeconds, component.maxRange, ); return; } { const { x, y, z } = target.components.position || { x: 0, y: 0, z: 0 }; targetPositionVector.set(x, y, z); } { const { x, y, z } = target.components.velocity || { x: 0, y: 0, z: 0 }; targetVelocityVector.set(x, y, z); } const predictionTime = positionVector.distanceTo(targetPositionVector) / speed;
const desiredVelocity = pursue( positionVector, targetPositionVector, targetVelocityVector, predictionTime, ) .normalize() .multiplyScalar(speed); const steering = desiredVelocity .sub(velocityVector) .normalize() .multiplyScalar(((maxForce * 1000) / mass) * deltaInSeconds); newVelocityVector.addVectors(velocityVector, steering); // Smooth out the velocity change just a little bit. velocityVector.lerp(newVelocityVector, 0.1);
entity.updateComponent("velocity", { x: velocityVector.x, y: velocityVector.y, z: velocityVector.z, }); this.handleTorpedoDistance( entity, component.distanceTraveled, deltaInSeconds, component.maxRange, ); } handleTorpedoDistance( entity: Entity, distanceTraveled: number, deltaInSeconds: number, maxRange: number, ) { entity.updateComponent("isTorpedo", { distanceTraveled: (distanceTraveled || 0) + velocityVector.length() * deltaInSeconds, }); if (distanceTraveled > maxRange) { // TODO May 11, 2024: Make a small explosion on the viewscreen const systemId = entity.components.position?.parentId || null; this.ecs.removeEntity(entity);
pubsub.publish.starmapCore.torpedos({ systemId, }); } }}