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Kim Ravn Hansen
2025-09-19 16:04:11 +02:00
parent b1d667d7cb
commit 3a9185ca94
20 changed files with 2520 additions and 360 deletions
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102
frontend/SourceCell.js Executable file
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import { Direction } from "./WfcConstants.js";
/**
* Represents a 3x3 grid of values (sub-cells), that are used as building blocks for procedurally
* generated grids. In reality, only the center value will be included in the outputted WfcGrid;
* the 8 surrounding colors are there to establish which SourceCells can live next to each other.
*/
export class SourceCell {
/** @param {Uint8Array?} values The 9 sub cells that make up this SourceCell */
constructor(values) {
if (values === undefined) {
this.values = new Uint8Array(9);
return;
}
this.values = values;
}
/** @returns {string} The actual value of this Trainin gCell is represented by its center value */
get value() {
return this.values[Direction.C];
}
/**
* @param {uint8} value
* Set the default value of this source cell */
set value(value) {
this.values[Direction.C] = value;
}
clone() {
return new SourceCell(this.values.slice());
}
/**
* @param {SourceCell} other
* @param {number} direction
*
* @returns {boolean}
*/
potentialNeighbours(other, direction) {
// sadly, we're not allowed to be friends with ourselves.
if (this === other) {
console.log("WTF were checking to be friends with ourselves!", { _this: this, other, direction });
// throw new Error("WTF were checking to be friends with ourselves!", { _this: this, other, direction });
}
return (
//
// if they want to live to my east,
// their two westmost columns must match
// my two eastmost columns
(direction == Direction.E &&
// My center col must match their west col
this.values[Direction.N] === other.values[Direction.NW] &&
this.values[Direction.C] === other.values[Direction.W] &&
this.values[Direction.S] === other.values[Direction.SW] &&
// My east col must match their center col
this.values[Direction.NE] === other.values[Direction.N] &&
this.values[Direction.E] === other.values[Direction.C] &&
this.values[Direction.SE] === other.values[Direction.S]) ||
//
// if they want to live to my west,
// their two eastmost columns must match
// my two westmost columns
(direction == Direction.W &&
// My center col must match their east col
this.values[Direction.N] === other.values[Direction.NE] &&
this.values[Direction.C] === other.values[Direction.E] &&
this.values[Direction.S] === other.values[Direction.SE] &&
// My west col must match their center col
this.values[Direction.NW] === other.values[Direction.N] &&
this.values[Direction.W] === other.values[Direction.C] &&
this.values[Direction.SW] === other.values[Direction.S]) ||
//
// if they want to live to my north,
// their two souther rows must match
// my two northern rows
(direction == Direction.N &&
// my middle row must match their south row
this.values[Direction.W] === other.values[Direction.SW] &&
this.values[Direction.C] === other.values[Direction.S] &&
this.values[Direction.E] === other.values[Direction.SE] &&
// my north row must match their middle row
this.values[Direction.NW] === other.values[Direction.W] &&
this.values[Direction.N] === other.values[Direction.C] &&
this.values[Direction.NE] === other.values[Direction.E]) ||
//
// if they want to live to my south,
// their two northern rows must match
// my two southern rows
(direction == Direction.S &&
// my middle row must match their north row
this.values[Direction.W] === other.values[Direction.NW] &&
this.values[Direction.C] === other.values[Direction.N] &&
this.values[Direction.E] === other.values[Direction.NE] &&
// my south row must match their middle row
this.values[Direction.SW] === other.values[Direction.W] &&
this.values[Direction.S] === other.values[Direction.C] &&
this.values[Direction.SE] === other.values[Direction.E])
);
}
}