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allow to add river - fix

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Azgaar 2021-07-20 01:31:48 +03:00
parent 4523e90551
commit 76c787b6e9
2 changed files with 37 additions and 28 deletions
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14
modules/river-generator.js
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@ -245,19 +245,19 @@
};
// add points at 1/3 and 2/3 of a line between adjacents river cells
const addMeandering = function (cells, width = 1, meandering = 0.5) {
const addMeandering = function (riverCells, width = 1, meandering = 0.5) {
const meandered = [];
const {p, conf, h} = pack.cells;
const lastCell = cells.length - 1;
const {p, conf} = pack.cells;
const lastCell = riverCells.length - 1;
for (let i = 0; i <= lastCell; i++, width++) {
const cell = cells[i];
const cell = riverCells[i];
const [x1, y1] = p[cell];
meandered.push([x1, y1, conf[cell]]);
if (i === lastCell) break;
const nextCell = cells[i + 1];
const nextCell = riverCells[i + 1];
if (nextCell === -1) {
meandered.push(getBorderPoint(cell));
break;
@ -271,14 +271,14 @@
const meander = meandering + 1 / width + Math.random() * Math.max(meandering - width / 100, 0);
const dist2 = (x2 - x1) ** 2 + (y2 - y1) ** 2; // square distance between cells
if (width < 10 && (dist2 > 64 || (dist2 > 36 && cells.length < 5))) {
if (width < 10 && (dist2 > 64 || (dist2 > 36 && riverCells.length < 5))) {
// if dist2 is big or river is small add extra points at 1/3 and 2/3 of segment
const p1x = (x1 * 2 + x2) / 3 + -sin * meander;
const p1y = (y1 * 2 + y2) / 3 + cos * meander;
const p2x = (x1 + x2 * 2) / 3 + sin * meander;
const p2y = (y1 + y2 * 2) / 3 + cos * meander;
meandered.push([p1x, p1y], [p2x, p2y]);
} else if (dist2 > 25 || cells.length < 6) {
} else if (dist2 > 25 || riverCells.length < 6) {
// if dist is medium or river is small add 1 extra middlepoint
const p1x = (x1 + x2) / 2 + -sin * meander;
const p1y = (y1 + y2) / 2 + cos * meander;