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This commit is contained in:
Andras Schmelczer 2026-08-23 10:27:55 +01:00
commit 8f50ebdb97
1 changed files with 1842 additions and 3095 deletions
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99
backend/src/create-world.ts
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@ -2,16 +2,14 @@ import { vec2 } from 'gl-matrix';
import { Random, PlanetBase, hsl, settings, evaluateSdf } from 'shared';
import { LampPhysical } from './objects/lamp-physical';
import { PlanetPhysical } from './objects/planet-physical';
import { PhysicalContainer } from './physics/containers/physical-container';
import { Physical } from './physics/physicals/physical';
import { PhysicalContainer } from './physics/physical-container';
export const createWorld = (objectContainer: PhysicalContainer) => {
const objects: Array<Physical> = [];
const lights: Array<Physical> = [];
const planets: Array<PlanetPhysical> = [];
const lamps: Array<LampPhysical> = [];
for (let r = 0; r < settings.worldRadius; r += settings.radiusSteps) {
const circumference = 2 * Math.PI * r;
const stepCount = circumference * settings.objectsOnCircleLength;
const stepCount = 2 * Math.PI * r * settings.objectsOnCircleLength;
for (let rad = 0; rad < 2 * Math.PI; rad += (2 * Math.PI) / stepCount) {
const position = vec2.rotate(
vec2.create(),
@ -20,12 +18,12 @@ export const createWorld = (objectContainer: PhysicalContainer) => {
rad,
);
if (objects.length !== 0 && Random.getRandom() > 0.5) {
if (planets.length !== 0 && Random.getRandom() > 0.5) {
if (
evaluateSdf(position, objects) > 200 &&
!lights.find((l) => l.distance(position) < 2500)
evaluateSdf(position, planets) > 200 &&
!lamps.find((l) => l.distance(position) < 2500)
) {
lights.push(
lamps.push(
new LampPhysical(
position,
hsl(
@ -37,56 +35,43 @@ export const createWorld = (objectContainer: PhysicalContainer) => {
),
);
}
} else {
if (
evaluateSdf(position, objects) > 1400 &&
!lights.find((l) => l.distance(position) < 1700)
) {
const planet =
objects.length === 0
? new PlanetPhysical(
PlanetBase.createPlanetVertices(
position,
Random.getRandomInRange(1600, 2400),
Random.getRandomInRange(1600, 2400),
Random.getRandomInRange(80, 300),
),
true,
)
: new PlanetPhysical(
PlanetBase.createPlanetVertices(
position,
Random.getRandomInRange(300, 1600),
Random.getRandomInRange(300, 1600),
Random.getRandomInRange(20, 100),
),
);
objects.push(planet);
}
} else if (
evaluateSdf(position, planets) > 1400 &&
!lamps.find((l) => l.distance(position) < 1700)
) {
const isKeystone = planets.length === 0;
const [sizeMin, sizeMax, roughMin, roughMax] = isKeystone
? [1600, 2400, 80, 300]
: [300, 1600, 20, 100];
planets.push(
new PlanetPhysical(
PlanetBase.createPlanetVertices(
position,
Random.getRandomInRange(sizeMin, sizeMax),
Random.getRandomInRange(sizeMin, sizeMax),
Random.getRandomInRange(roughMin, roughMax),
),
isKeystone,
objectContainer.game,
),
);
}
}
}
console.info(`Generated ${objects.length} planets`);
console.info(`Generated ${lights.length} light`);
console.info(`Generated ${planets.length} planets and ${lamps.length} lamps`);
// Each lamp is associated with its nearest planet via the planet SDF
// (negative inside), so it advertises that planet's capture.
const planets = objects.filter((o): o is PlanetPhysical => o instanceof PlanetPhysical);
lights
.filter((l): l is LampPhysical => l instanceof LampPhysical)
.forEach((lamp) => {
let nearest: PlanetPhysical | undefined;
let nearestDistance = Infinity;
planets.forEach((planet) => {
const distance = planet.distance(lamp.center);
if (distance < nearestDistance) {
nearestDistance = distance;
nearest = planet;
}
});
nearest?.addLamp(lamp);
});
for (const lamp of lamps) {
let nearest: PlanetPhysical | undefined;
let nearestDistance = Infinity;
for (const planet of planets) {
const distance = planet.distance(lamp.center);
if (distance < nearestDistance) {
nearestDistance = distance;
nearest = planet;
}
}
nearest?.addLamp(lamp);
}
[...objects, ...lights].forEach((o) => objectContainer.addObject(o));
[...planets, ...lamps].forEach((o) => objectContainer.addObject(o));
};