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:roclet: improve algorithm, add an intermediate phase to clean up residual cell from previous layer, before grabing the free ones

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platane
2020-10-26 00:18:50 +01:00
parent 69c3551cc5
commit a3f590a7d2
13 changed files with 565 additions and 21 deletions
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14
packages/compute/pruneLayer.ts
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@@ -15,8 +15,7 @@ import {
type M = Point & { parent: M | null; h: number };
const unwrap = (grid: Grid, m: M | null): Point[] =>
m ? [...unwrap(grid, m.parent), m] : [];
const unwrap = (m: M | null): Point[] => (m ? [...unwrap(m.parent), m] : []);
const getEscapePath = (grid: Grid, x: number, y: number, color: Color) => {
const openList: M[] = [{ x, y, h: 0, parent: null }];
@@ -25,14 +24,13 @@ const getEscapePath = (grid: Grid, x: number, y: number, color: Color) => {
while (openList.length) {
const c = openList.shift()!;
if (c.y === -1 || c.y === grid.height) return unwrap(grid, c);
if (c.y === -1 || c.y === grid.height) return unwrap(c);
for (const a of around4) {
const x = c.x + a.x;
const y = c.y + a.y;
if (!isInside(grid, x, y))
return unwrap(grid, { x, y, parent: c } as any);
if (!isInside(grid, x, y)) return unwrap({ x, y, parent: c } as any);
const u = getColor(grid, x, y);
@@ -63,10 +61,10 @@ const snakeCanEscape = (grid: Grid, snake: Snake, color: Color) => {
const s = openList.shift()!;
for (const a of around4) {
const x = getHeadX(s) + a.x;
const y = getHeadY(s) + a.y;
if (!snakeWillSelfCollide(s, a.x, a.y)) {
const x = getHeadX(s) + a.x;
const y = getHeadY(s) + a.y;
if (!isInside(grid, x, y)) return true;
const u = getColor(grid, x, y);