@rpgjs/physic/dist/index5.js

A deterministic 2D top-down physics library for RPG, sandbox and MMO games

import { Vector2 } from "./index2.js";
const EPSILON = 1e-5;
function approximatelyEqual(a, b, epsilon = EPSILON) {
  return Math.abs(a - b) < epsilon;
}
function clamp(value, min, max) {
  return Math.max(min, Math.min(max, value));
}
function lerp(a, b, t) {
  return a + (b - a) * t;
}
function distance(x1, y1, x2, y2) {
  const dx = x2 - x1;
  const dy = y2 - y1;
  return Math.sqrt(dx * dx + dy * dy);
}
function distanceSquared(x1, y1, x2, y2) {
  const dx = x2 - x1;
  const dy = y2 - y1;
  return dx * dx + dy * dy;
}
function angleBetween(x1, y1, x2, y2) {
  return Math.atan2(y2 - y1, x2 - x1);
}
function normalizeAngle(angle) {
  while (angle > Math.PI) {
    angle -= 2 * Math.PI;
  }
  while (angle < -Math.PI) {
    angle += 2 * Math.PI;
  }
  return angle;
}
function angularDistance(from, to) {
  let diff = to - from;
  while (diff > Math.PI) {
    diff -= 2 * Math.PI;
  }
  while (diff < -Math.PI) {
    diff += 2 * Math.PI;
  }
  return diff;
}
function projectPointOnLineSegment(point, lineStart, lineEnd) {
  const line = lineEnd.sub(lineStart);
  const pointVec = point.sub(lineStart);
  const lineLengthSq = line.lengthSquared();
  if (lineLengthSq < EPSILON) {
    return lineStart.clone();
  }
  const t = clamp(pointVec.dot(line) / lineLengthSq, 0, 1);
  return lineStart.add(line.mul(t));
}
function closestPointOnAABB(point, aabb) {
  return new Vector2(
    clamp(point.x, aabb.minX, aabb.maxX),
    clamp(point.y, aabb.minY, aabb.maxY)
  );
}
function pointInCircle(point, center, radius) {
  return point.distanceToSquared(center) <= radius * radius;
}
function degToRad(degrees) {
  return degrees * Math.PI / 180;
}
function radToDeg(radians) {
  return radians * 180 / Math.PI;
}
export {
  EPSILON,
  angleBetween,
  angularDistance,
  approximatelyEqual,
  clamp,
  closestPointOnAABB,
  degToRad,
  distance,
  distanceSquared,
  lerp,
  normalizeAngle,
  pointInCircle,
  projectPointOnLineSegment,
  radToDeg
};
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