zenno/doc/race: conserve power

zenno/src/lib/race.ts

@@ -642,6 +642,49 @@ export function laneChangeSpeed(powerStat: number, maxLaneOrOrder?: number, curr
  */
 export const LANE_CHANGE_ACCEL = 0.03;
 
+const conserveStratDistCoef = {
+	[RunningStyle.FrontRunner]: {
+		[Distance.Sprint]: 1,
+		[Distance.Mile]: 1,
+		[Distance.Medium]: 1,
+		[Distance.Long]: 1,
+	},
+	[RunningStyle.PaceChaser]: {
+		[Distance.Sprint]: 0.7,
+		[Distance.Mile]: 0.8,
+		[Distance.Medium]: 0.9,
+		[Distance.Long]: 0.9,
+	},
+	[RunningStyle.LateSurger]: {
+		[Distance.Sprint]: 0.75,
+		[Distance.Mile]: 0.7,
+		[Distance.Medium]: 0.875,
+		[Distance.Long]: 1,
+	},
+	[RunningStyle.EndCloser]: {
+		[Distance.Sprint]: 0.7,
+		[Distance.Mile]: 0.75,
+		[Distance.Medium]: 0.86,
+		[Distance.Long]: 0.9,
+	},
+	[RunningStyle.GreatEscape]: {
+		[Distance.Sprint]: 1,
+		[Distance.Mile]: 1,
+		[Distance.Medium]: 1,
+		[Distance.Long]: 1,
+	},
+} as const;
+
+export function conservePowerAccel(distanceType: Distance, style: RunningStyle, rawPower: number, powerSkillBonus?: number, spotStruggled?: boolean, rushed?: boolean): number {
+	const power = rawPower + (powerSkillBonus ?? 0);
+	if (power <= 1200) {
+		return 0;
+	}
+	const sdc = conserveStratDistCoef[style][distanceType];
+	const activity = rushed ? 0.8 : (spotStruggled ? 0.98 : 1);
+	return Math.sqrt((power - 1200) * 130) * 0.001 * sdc * activity;
+}
+
 /**
  * Calculate a horse's minimum speed for a race.
  * @param raceLen Length of the race in meters

zenno/src/routes/doc/race/+page.svelte

@@ -14,18 +14,9 @@
 	let surfaceApt = $state(race.AptitudeLevel.A);
 	let distanceApt = $state(race.AptitudeLevel.A);
 	let raceLen = $state(2000);
-	const raceLenType = $derived.by(() => {
+	const styleIsFront = $derived(style === race.RunningStyle.FrontRunner || style === race.RunningStyle.GreatEscape);
-		if (raceLen < 1500) {
+	const distanceType = $derived(race.distance(raceLen));
-			return 'Sprint';
+	const raceLenType = $derived(race.Distance[distanceType]);
-		}
-		if (raceLen < 1900) {
-			return 'Mile';
-		}
-		if (raceLen < 2500) {
-			return 'Medium';
-		}
-		return 'Long';
-	});
 
 	const spurtSpeed: Array<ComputedSeries | null> = $derived([
 		{ label: `Guts 1200`, y: (x) => race.spurtSpeed(x, 1200, style, distanceApt, raceLen) },
@@ -66,6 +57,11 @@
 		},
 	]);
 	const laneChange: ComputedSeries[] = [{ label: 'Lane Change Target Speed', y: (x) => race.laneChangeSpeed(x) }];
+	const conservePower: Array<ComputedSeries | null> = $derived([
+		{ label: 'Conserved Power', y: (_raw, x) => race.conservePowerAccel(distanceType, style, x, 0, false, false)},
+		{ label: 'Rushed', y: (_raw, x) => race.conservePowerAccel(distanceType, style, x, 0, false, true)},
+		styleIsFront ? { label: 'Spot Struggled', y: (_raw, x) => race.conservePowerAccel(distanceType, style, x, 0, true, false)} : null,
+	]);
 	const gutsSpurt: Array<ComputedSeries | null> = $derived([
 		{ label: `Speed 600`, y: (x) => race.spurtSpeed(600, x, style, distanceApt, raceLen) },
 		{ label: `Speed 1200`, y: (x) => race.spurtSpeed(1200, x, style, distanceApt, raceLen) },
@@ -85,7 +81,6 @@
 	];
 	const duelSpeed: ComputedSeries[] = [{ label: 'Dueling Speed Boost', y: (x) => race.duelSpeedMod(x) }];
 	const duelAccel: ComputedSeries[] = [{ label: 'Dueling Acceleration Boost', y: (x) => race.duelAccelMod(x) }];
-	const styleIsFront = $derived(style === race.RunningStyle.FrontRunner || style === race.RunningStyle.GreatEscape);
 	const secSpeed: Array<ComputedAreas | null> = $derived([
 		{
 			label: 'Early Race',
@@ -286,6 +281,11 @@
 		/>
 	</div>
 
+	<Sec h={3} id="conserve-power">Conserve Power Acceleration</Sec>
+	<p>Bonus acceleration at spurt start from the Conserve Power mechanic.</p>
+	<p>This mechanic does not appear to be well understood, in particular how long the acceleration bonus lasts and how the rushed and spot struggle multipliers apply.</p>
+	{@render statChart(race.Stat.Power, conservePower, 'Acceleration (m/s²)', [0, 0.35], {len: true, style: true})}
+
 	<Sec h={2} id="guts">Guts</Sec>
 
 	<Sec h={3} id="spurt-speed-guts">Spurt Speed</Sec>