32 lines
1.6 KiB
JavaScript
32 lines
1.6 KiB
JavaScript
import { GRID } from './config.js';
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export function yen(value) { return `JPY ${Math.floor(value).toLocaleString('en-US')}`; }
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export function key(col, row) { return `${col},${row}`; }
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export function parseKey(k) { const [col, row] = String(k).split(',').map(Number); return { col, row }; }
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export function clamp(n, min, max) { return Math.max(min, Math.min(max, n)); }
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export function randomBetween(min, max) { return min + Math.random() * (max - min); }
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export function inGrid(col, row) { return col >= 0 && col < GRID.cols && row >= 0 && row < GRID.rows; }
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export function cellCenter(col, row) {
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return { x: GRID.x + col * GRID.cell + GRID.cell / 2, y: GRID.y + row * GRID.cell + GRID.cell / 2 };
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}
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export function pointToCell(x, y) {
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const col = Math.floor((x - GRID.x) / GRID.cell);
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const row = Math.floor((y - GRID.y) / GRID.cell);
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if (!inGrid(col, row)) return null;
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return { col, row };
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}
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export function distance(a, b) { return Math.hypot(a.x - b.x, a.y - b.y); }
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export function sameCell(a, b) { return a && b && a.col === b.col && a.row === b.row; }
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export function lerp(a, b, t) { return a + (b - a) * t; }
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export function hexToRgb(hex) {
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const s = hex.replace('#', '');
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return { r: parseInt(s.slice(0, 2), 16), g: parseInt(s.slice(2, 4), 16), b: parseInt(s.slice(4, 6), 16) };
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}
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export function rgbToHex(r, g, b) {
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const c = n => Math.round(clamp(n, 0, 255)).toString(16).padStart(2, '0');
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return `#${c(r)}${c(g)}${c(b)}`;
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}
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export function mixHex(a, b, t) {
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const ca = hexToRgb(a), cb = hexToRgb(b);
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return rgbToHex(lerp(ca.r, cb.r, t), lerp(ca.g, cb.g, t), lerp(ca.b, cb.b, t));
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}
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