AStar returns cell instead of path

This commit is contained in:
evanpelle
2024-12-03 14:35:09 -08:00
parent 330b6b93cb
commit 4edd66dc1f
12 changed files with 57 additions and 59 deletions
+1 -1
View File
@@ -2,7 +2,7 @@ import { Cell, TerrainType, Tile } from "../game/Game";
export interface AStar {
compute(): PathFindResultType
reconstructPath(): SearchNode[]
reconstructPath(): Cell[]
}
export enum PathFindResultType {
+12 -19
View File
@@ -31,29 +31,22 @@ export class MiniAStar implements AStar {
return this.aStar.compute()
}
reconstructPath(): SearchNode[] {
reconstructPath(): Cell[] {
const upscaled = upscalePath(this.aStar.reconstructPath())
.map(p => this.terrainMap.terrain(new Cell(p.x, p.y))) as SearchNode[]
upscaled.push(this.dst)
return upscaled
}
reconstructPathAsPoints(): Point[] {
const upscaled = upscalePath(this.aStar.reconstructPath())
upscaled.push({ x: this.dst.cell().x, y: this.dst.cell().y })
upscaled.push(this.dst.cell())
return upscaled
}
}
function upscalePath(path: SearchNode[], scaleFactor: number = 2): Point[] {
function upscalePath(path: Cell[], scaleFactor: number = 2): Cell[] {
// Scale up each point
const scaledPath = path.map(point => ({
x: point.cell().x * scaleFactor,
y: point.cell().y * scaleFactor
}));
const scaledPath = path.map(point => (new Cell(
point.x * scaleFactor,
point.y * scaleFactor
)));
const smoothPath: Point[] = [];
const smoothPath: Cell[] = [];
for (let i = 0; i < scaledPath.length - 1; i++) {
const current = scaledPath[i];
@@ -72,10 +65,10 @@ function upscalePath(path: SearchNode[], scaleFactor: number = 2): Point[] {
// Add intermediate points
for (let step = 1; step < steps; step++) {
smoothPath.push({
x: Math.round(current.x + (dx * step) / steps),
y: Math.round(current.y + (dy * step) / steps)
});
smoothPath.push(new Cell(
Math.round(current.x + (dx * step) / steps),
Math.round(current.y + (dy * step) / steps)
));
}
}
+10 -6
View File
@@ -1,4 +1,4 @@
import { Game, Tile } from "../game/Game";
import { Cell, Game, Tile } from "../game/Game";
import { manhattanDist } from "../Util";
import { AStar, PathFindResultType, TileResult } from "./AStar";
import { ParallelAStar, WorkerClient } from "../worker/WorkerClient";
@@ -9,17 +9,19 @@ export class PathFinder {
private curr: Tile = null
private dst: Tile = null
private path: Tile[]
private path: Cell[]
private aStar: AStar
private computeFinished = true
private constructor(
private game: Game,
private newAStar: (curr: Tile, dst: Tile) => AStar
) { }
public static Mini(game: Game, iterations: number, canMove: (t: Tile) => boolean, maxTries: number = 20) {
return new PathFinder(
game,
(curr: Tile, dst: Tile) => {
return new MiniAStar(
game.terrainMap(),
@@ -34,8 +36,9 @@ export class PathFinder {
)
}
public static Serial(iterations: number, canMove: (t: Tile) => boolean, maxTries: number = 20): PathFinder {
public static Serial(game: Game, iterations: number, canMove: (t: Tile) => boolean, maxTries: number = 20): PathFinder {
return new PathFinder(
game,
(curr: Tile, dst: Tile) => {
return new SerialAStar(
curr,
@@ -48,8 +51,9 @@ export class PathFinder {
)
}
public static Parallel(worker: WorkerClient, numTicks: number): PathFinder {
public static Parallel(game: Game, worker: WorkerClient, numTicks: number): PathFinder {
return new PathFinder(
game,
(curr: Tile, dst: Tile) => {
return worker.createParallelAStar(curr, dst, numTicks)
}
@@ -77,14 +81,14 @@ export class PathFinder {
this.computeFinished = false
return this.nextTile(curr, dst)
} else {
return { type: PathFindResultType.NextTile, tile: this.path.shift() }
return { type: PathFindResultType.NextTile, tile: this.game.tile(this.path.shift()) }
}
}
switch (this.aStar.compute()) {
case PathFindResultType.Completed:
this.computeFinished = true
this.path = this.aStar.reconstructPath() as Tile[]
this.path = this.aStar.reconstructPath()
// Remove the start tile
this.path.shift()
return this.nextTile(curr, dst)
+3 -2
View File
@@ -1,6 +1,7 @@
import { PriorityQueue } from "@datastructures-js/priority-queue";
import { AStar, SearchNode } from "./AStar";
import { PathFindResultType } from "./AStar";
import { Cell } from "../game/Game";
export class SerialAStar implements AStar {
@@ -114,7 +115,7 @@ export class SerialAStar implements AStar {
}
}
public reconstructPath(): SearchNode[] {
public reconstructPath(): Cell[] {
if (!this.meetingPoint) return [];
// Reconstruct path from start to meeting point
@@ -132,6 +133,6 @@ export class SerialAStar implements AStar {
fwdPath.push(current);
}
return fwdPath;
return fwdPath.map(sn => sn.cell());
}
}