/* ISLE SLINGERS -- physics/index.js (module: physics -- aggregator / public API)
 * Modularization pass. This is the THIN AGGREGATOR for the physics
 * module. The original js/core.js monolith is now split into submodules
 * (physics/constants, -/state, -/aim, -/abilities, -/damage, -/step,
 * -/collision, -/rules, -/camera); each installs its units into ONE shared
 * scope `P`, preserving the monolith's single-closure semantics exactly.
 *
 * Load contract:
 *   browser  -- every physics/<unit>/index.js <script> must load BEFORE this
 *               file (it reads the ordered parts off globalThis.ISLE_PHYSICS_PARTS);
 *   node     -- this file requires the submodules in dependency order itself.
 *
 * Public API (ISLE_CORE) is key-for-key identical to the pre-modularization
 * core.js return object -- same 20 keys, same values. No DOM, deterministic.
 */
(function (root, factory) {
  var api = factory();
  if (typeof module !== 'undefined' && module.exports) module.exports = api;
  else root.ISLE_CORE = api;
})(typeof globalThis !== 'undefined' ? globalThis : this, function () {
  'use strict';

  var P = {}; // the single shared physics scope (== the old monolith closure)

  var parts;
  if (typeof module !== 'undefined' && module.exports) {
    // Node: load submodules in dependency order (constants first, camera last)
    parts = [
      require('./constants/index.js'),
      require('./state/index.js'),
      require('./aim/index.js'),
      require('./abilities/index.js'),
      require('./damage/index.js'),
      require('./step/index.js'),
      require('./collision/index.js'),
      require('./topple/index.js'),
      require('./rules/index.js'),
      require('./camera/index.js')
    ];
  } else {
    // browser: submodules already pushed their installers, in <script> order
    parts = (typeof globalThis !== 'undefined' && globalThis.ISLE_PHYSICS_PARTS) || [];
  }

  for (var i = 0; i < parts.length; i++) parts[i](P);

  // ------------------------------------------------------------------ API
  // (kept key-for-key identical to the pre-S-2 core.js public surface)

  return {
    WORLD: P.WORLD,
    VIEW: P.VIEW,
    MATERIALS: P.MATERIALS,
    BIRD_TYPES: P.BIRD_TYPES,
    ENEMY_TYPES: P.ENEMY_TYPES,
    GRAVITY: P.GRAVITY,
    MAX_PULL: P.MAX_PULL,
    MIN_PULL: P.MIN_PULL,
    LAUNCH_POWER: P.LAUNCH_POWER,
    BIRD_BONUS: P.BIRD_BONUS,
    createGame: P.createGame,
    activeBird: P.activeBird,
    aimVector: P.aimVector,
    trajectory: P.trajectory,
    launch: P.launch,
    triggerAbility: P.triggerAbility,
    step: P.step,
    starsFor: P.starsFor,
    birdsRemaining: P.birdsRemaining,
    AIR_DRAG: P.AIR_DRAG
  };
});