// All mutable game state in one place, plus the point-reset that re-arms it.

import { HOME } from './config.js';

export const P = { x: 1.3, z: 22.8, side: 'P', pose: 'idle', poseT: 0, swingT: -1, facing: 1, runT: 0 };
export const O = { x: -1.3, z: 1.0, side: 'O', pose: 'idle', poseT: 0, swingT: -1, facing: 1, runT: 0 };
export const ball = { x: 0, y: 1, z: 20, vx: 0, vy: 0, vz: 0, g: 9.2,
  active: false, lastHit: 'P', bounces: 0, firstLand: null, collected: false };
export const score = { pts: [0, 0], games: [0, 0], server: 'P' }; // pts index 0=P 1=O
export const crowd = { cheer: 0, dots: [] }; // dots are (re)built by render.buildCrowd

// everything that used to be loose top-level lets
export const G = {
  mode: 'tennis',     // tennis | transition | splatter
  transT: 0,          // transition timeline clock
  tFlags: null,       // one-shot markers within the transition
  hideO: false,       // the opponent has... left the match
  everTransitioned: false,
  phase: 'pretoss',   // pretoss | toss | rally | over
  serveNum: 1,
  overT: 0,
  hitstop: 0,
  flash: null,        // {text, t}
  idleT: 0,
  outMarker: null,    // {x, z, out, t} — where your last shot lands
  boy: null,          // ball boy sprinting across: {x, z, dir, runT}
  aiServeT: 0,
  aiSwingCool: 0,
  aiReactT: 9,        // time since the player's last hit; CPU reads the shot after TUNE.aiReaction
  wasServe: false,    // the ball in flight is a serve (first bounce must hit the box)
  splatT: 0,          // time survived in splatter mode — drives the difficulty ramp
  eatenT: 0,          // time since you were eaten — gates the restart tap
};

export const other = s => s === 'P' ? 'O' : 'P';
export const deuceSide = () => (score.pts[0] + score.pts[1]) % 2 === 0; // even points → deuce (right) side

export function setupPoint() {
  G.phase = 'pretoss'; ball.active = false; ball.bounces = 0; ball.firstLand = null;
  if (G.mode === 'splatter') { // always your serve, from wherever you're standing
    score.server = 'P';
    P.pose = 'idle'; P.swingT = -1; P.facing = 1;
    return;
  }
  const sv = score.server === 'P' ? P : O, rc = score.server === 'P' ? O : P;
  const sx = deuceSide() ? 1.3 : -1.3;
  sv.x = sv.side === 'P' ? sx : -sx;           // deuce side mirrors across the net
  sv.z = sv.side === 'P' ? 24.3 : -0.5;
  rc.x = -sv.x; rc.z = rc.side === 'P' ? 22.5 : HOME.O.z - 1.3;
  P.pose = O.pose = 'idle'; P.swingT = O.swingT = -1;
  P.facing = O.facing = 1; // canonical righty stance — bounce/serve sprites must not render mirrored
  G.aiServeT = score.server === 'O' ? 1.4 : 0;
}

export function sendBoy(tx = ball.x, tz = ball.z) { // fetch a dead ball — or mop a splat
  if (tz < -3 || tz > 27) return; // target left the field lengthwise, let it go
  const dir = tx > 0 ? 1 : -1;    // enter from the opposite side so the pickup is mid-run
  G.boy = { x: dir > 0 ? -13 : 13, z: tz, dir, runT: 0 };
}