Add level-aware builder controls

src/lib/builder/loadout.ts

@@ -1,6 +1,6 @@
 export type Roll = { statId: string; value: number };
-export type GearSelection = { itemId: string; level: number; brandId: string; talentId: string; health: number; armor: number; rolls: Roll[]; augmentSlots: number[] };
-export type WeaponSelection = { itemId: string; tier: number; damage: number; firepower: number; toughness: number; engineering: number; talent1Id: string; talent2Id: string };
+export type GearSelection = { itemId: string; level: number; brandId: string; talentId: string; health: number; armor: number; rolls: [Roll, Roll]; augmentSlots: number[] };
+export type WeaponSelection = { itemId: string; level: number; tier: number; damage: number; firepower: number; toughness: number; engineering: number; talent1Id: string; talent2Id: string; rolls: [Roll, Roll] };
 export type ChipSelection = { setId: string; quality: 'Superior' | 'High-end'; primary: Roll; secondary: [Roll, Roll] };
 export type ProtocolSelection = { itemId: string; level: number; talentUpgrades: number };
 export type LoadoutDraft = {
@@ -15,8 +15,8 @@ export type LoadoutDraft = {
 
 export const gearSlots = ['Holster', 'Gloves', 'Backpack', 'Knee Pads', 'Body Armor', 'Mask'] as const;
 export const blankRoll = (): Roll => ({ statId: '', value: 0 });
-export const blankGear = (): GearSelection => ({ itemId: '', level: 50, brandId: '', talentId: '', health: 0, armor: 0, rolls: [blankRoll()], augmentSlots: [] });
-export const blankWeapon = (): WeaponSelection => ({ itemId: '', tier: 0, damage: 0, firepower: 0, toughness: 0, engineering: 0, talent1Id: '', talent2Id: '' });
+export const blankGear = (): GearSelection => ({ itemId: '', level: 50, brandId: '', talentId: '', health: 0, armor: 0, rolls: [blankRoll(), blankRoll()], augmentSlots: [] });
+export const blankWeapon = (): WeaponSelection => ({ itemId: '', level: 50, tier: 0, damage: 0, firepower: 0, toughness: 0, engineering: 0, talent1Id: '', talent2Id: '', rolls: [blankRoll(), blankRoll()] });
 export const blankChip = (): ChipSelection => ({ setId: '', quality: 'Superior', primary: blankRoll(), secondary: [blankRoll(), blankRoll()] });
 export const createDraft = (): LoadoutDraft => ({
 	version: 1,
@@ -36,3 +36,45 @@ export const clamp = (value: unknown, min: unknown, max: unknown) => {
 
 export const scaled = (min: unknown, max: unknown, progress: number, steps: number) =>
 	Number(min) + (Number(max) - Number(min)) * Math.min(steps, Math.max(0, progress)) / steps;
+
+export type LevelScaledRange = {
+	rawMin: number;
+	rawMax: number;
+	min: number;
+	max: number;
+	provisional: boolean;
+};
+
+const itemLevel = (value: unknown) => Math.round(clamp(value, 1, 50));
+export const gearMultiplier = (level: unknown) => 0.91 + 0.05 * itemLevel(level);
+export const weaponMultiplier = (level: unknown) => 1.14 + 0.05 * itemLevel(level);
+
+export function levelScaledRange(
+	minimum: unknown,
+	maximum: unknown,
+	targetLevel: unknown,
+	referenceLevel: unknown,
+	source: 'gear' | 'weapon'
+): LevelScaledRange {
+	const target = itemLevel(targetLevel);
+	const reference = itemLevel(referenceLevel);
+	const multiplier = source === 'gear' ? gearMultiplier : weaponMultiplier;
+	const ratio = multiplier(target) / multiplier(reference);
+	const configuredMin = Number(minimum);
+	const configuredMax = Number(maximum);
+	const rawMin = (Number.isFinite(configuredMin) ? configuredMin : 0) * ratio;
+	const rawMax = (Number.isFinite(configuredMax) ? configuredMax : 0) * ratio;
+	return {
+		rawMin,
+		rawMax,
+		min: Math.floor(rawMin),
+		max: Math.floor(rawMax),
+		provisional: source === 'gear' ? target < 10 || reference < 10 : target < 40 || reference < 40
+	};
+}
+
+export function remapRangeValue(value: unknown, from: LevelScaledRange, to: LevelScaledRange) {
+	const span = from.max - from.min;
+	const position = span > 0 ? (clamp(value, from.min, from.max) - from.min) / span : 0;
+	return Math.round(to.min + (to.max - to.min) * position);
+}