// All tuning and constants. TUNE is live-editable in game via the T panel;
// the exported consts below are structural values that code shares but the panel doesn't show.

export const TUNE = {
  camZ: 36, camY: 9, camF: 280, horizon: 40,
  gravity: 9.2,            // slightly floaty vs 9.8 for readability
  spinFactor: 0.9,         // extra dive on quality shots (fake topspin)
  bounceY: 0.58, bounceXZ: 0.78,
  playerSpeed: 5.4, aiSpeed: 4.3,
  reach: 1.3, aiReach: 1.6, // tight contact radius: the assist positions you, the tap must be honest
  swingWindup: 0.06,       // s before contact window opens
  swingWindow: 0.16,       // s contact window length
  baseShotSpeed: 16, qualityShotSpeed: 12,  // horizontal m/s = base + q*quality; perfect timing = real pace
  serveSpeed: 21, serveQualitySpeed: 7,
  aimError: 2.4,           // m of scatter at quality 0
  perfectMs: 45,           // |offset from window center| for PERFECT
  aiQualityMin: 0.45, aiQualityMax: 0.85, aiFlub: 0.09,
  aiReaction: 0.45,        // s before the CPU reads your shot — well-aimed corners are winners
  autoAssist: matchMedia('(pointer: coarse)').matches ? 1.15 : 0, // auto-run speed factor (mobile)
};

export const COURT = { L: 23.77, W: 8.23, dblW: 10.97, netZ: 11.885, netH: 0.914, netW: 10.06 };
COURT.svcFar = COURT.netZ - 6.4;   // far service line
COURT.svcNear = COURT.netZ + 6.4;  // near service line

// world sizes (meters)
export const PLAYER_H = 1.88;
export const BOY_H = 1.2;
export const UMP_H = 3.0;

// contact rules: outside this height band the ball can't be hit (below = it's past you)
export const CONTACT = { minY: 0.24, maxY: 2.3 };

// how deep from the far/near baseline a player's interception zone extends
export const ZONE_DEPTH = 9.5;

// recovery positions between shots
export const HOME = { P: { x: 0, z: 22.8 }, O: { x: 0, z: 2.5 } };

// where the near player is allowed to move
export const P_BOUNDS = { x: 6.5, zMin: COURT.netZ + 1.2, zMax: 26 };

// serve toss: release height and upward speed (apex derives from these + gravity)
export const TOSS = { y0: 1.8, vy: 4.6 };

// shot target depth from the receiving baseline, by aim (up = deep, none = mid, down = short)
export const SHOT_DEPTH = { deep: 3.0, mid: 5.4, short: 8.6 };

// how long swing/serve poses hold before returning to idle (s)
export const POSE_TIME = 0.38;

// the server's idle ball bounce: sideways offset to the free hand, apex height, tempo.
// tempo drives the ball, the hand sprite AND the pock sound — one value, always in sync.
export const BOUNCE_IDLE = { dx: 0.5, apex: 0.55, tempo: 3.6 };

// generated sprite sheets: the idle pose is this many pixels tall; all scales derive from it
export const SPRITE_H = 112;