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This commit is contained in:
schmelczerandras 2020-10-27 10:32:37 +01:00
parent 7e188c2b9a
commit c9eae3adeb
16 changed files with 227 additions and 279 deletions
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38
backend/src/objects/planet-physical.ts
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@ -154,43 +154,15 @@ export class PlanetPhysical
}
public getForce(position: vec2): vec2 {
const height = this.distance(position);
let closestIndex = 0;
this.vertices.forEach((v, i) => {
if (
vec2.distance(position, v) < vec2.distance(position, this.vertices[closestIndex])
) {
closestIndex = i;
}
});
const afterClosest = this.vertices[(closestIndex + 1) % this.vertices.length];
const closest = this.vertices[closestIndex];
const beforeClosest = this.vertices[
(closestIndex - 1 + this.vertices.length) % this.vertices.length
];
const diff = vec2.subtract(vec2.create(), position, closest);
const edge1 = vec2.subtract(vec2.create(), afterClosest, closest);
const edge2 = vec2.subtract(vec2.create(), closest, beforeClosest);
const normalizedDiff = vec2.normalize(vec2.create(), diff);
const currentEdge =
vec2.dot(vec2.normalize(vec2.create(), rotate90Deg(edge1)), normalizedDiff) >
vec2.dot(vec2.normalize(vec2.create(), rotate90Deg(edge2)), normalizedDiff)
? edge1
: edge2;
vec2.normalize(currentEdge, currentEdge);
const normal = rotateMinus90Deg(currentEdge);
const diff = vec2.subtract(vec2.create(), this.center, position);
const dist = Math.max(0, vec2.length(diff) - 600);
vec2.normalize(diff, diff);
const scale = clamp(
settings.maxGravityQ * ((settings.maxGravityDistance / height) ** 3 - 1),
settings.maxGravityQ * ((settings.maxGravityDistance / dist) ** 1.5 - 1),
0,
settings.maxGravityStrength,
);
return vec2.scale(normal, normal, scale);
return vec2.scale(diff, diff, scale);
}
public get gameObject(): this {