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non-linear fatigue energy relationship #391

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non-linear fatigue energy relationship #391

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59 changes: 22 additions & 37 deletions src/worker/core/GameSim.basketball/index.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -689,21 +689,23 @@ class GameSim {
*/
fatigue(energy: number, skip?: boolean): number {
energy += 0.016;

if (energy > 1) {
energy = 1;
}
if (skip) {
return energy;
}

// Late in games, or in OT, fatigue matters less
if (this.isLateGame()) {
const factor = 6 - this.t;
return (energy + factor) / (1 + factor);
let res = energy;
if (res > 1) {
res = 1;
}
if (!skip) {
// Late in games, or in OT, fatigue matters less
if (this.isLateGame()) {
const factor = 6 - this.t;
res = (res + factor) / (1 + factor);
}
}
// *0.5 + 0.5 is just turning tanh into sigmoid
// 50 is the steepness of curve
// 0.85 is the average (e.g. when output equals 0.5)
res = Math.tanh((res - 0.85) * 50) * 0.5 + 0.5;

return energy;
return res;
}

/**
Expand Down Expand Up @@ -754,15 +756,17 @@ class GameSim {
) {
ovrs[p] = -Infinity;
} else {
// scale energy based on playing time, except in all-star game.
const energy = !this.allStarGame
? this.team[t].player[p].stat.energy *
this.team[t].player[p].ptModifier
: this.team[t].player[p].stat.energy;

ovrs[p] =
this.team[t].player[p].valueNoPot *
this.fatigue(this.team[t].player[p].stat.energy) *
this.fatigue(energy) *
(!lateGame ? random.uniform(0.9, 1.1) : 1);

if (!this.allStarGame) {
ovrs[p] *= this.team[t].player[p].ptModifier;
}

// Also scale based on margin late in games, so stars play less in blowouts (this doesn't really work that well, but better than nothing)
if (blowout) {
ovrs[p] *= (p + 1) / 10;
Expand Down Expand Up @@ -854,25 +858,6 @@ class GameSim {
}
}

const cutoff =
this.numPlayersOnCourt >= 5
? 2
: this.numPlayersOnCourt >= 3
? 1
: 0;
if (
(numG < cutoff && numPG === 0) ||
(numF < cutoff && numC === 0)
) {
if (
this.fatigue(this.team[t].player[p].stat.energy) > 0.728 &&
!onCourtIsIneligible
) {
// Exception for ridiculously tired players, so really unbalanced teams won't play starters whole game
continue;
}
}

substitutions = true;

// Substitute player
Expand Down