Function matchTerrainRule

matchTerrainRule(
    rule: TerrainRule,
    x: number,
    y: number,
    flagsAt: TerrainFlagsAt,
    rotate?: TerrainRotate,
    rotationIndex?: number,
): boolean
Whether rule, rotated by rotationIndex of rotations steps, matches the cell at x, y.
Parameters
- rule: TerrainRule
- x: number
- y: number
- flagsAt: TerrainFlagsAt
- rotate: TerrainRotate = squareRotate
- rotationIndex: number = 0
Returns boolean
Example
```
import { matchTerrainRule } from '@datamoc/mw_games/two-d/render';

const rule = { id: 'coast', conditions: [{ dx: 1, dy: 0, hasAll: ['water'] }], images: [] };
const flagsAt = (x: number, y: number) => (x === 1 && y === 0 ? new Set(['water']) : new Set(['land']));
console.log(matchTerrainRule(rule, 0, 0, flagsAt)); // true
```
- Defined in src/two-d/render/TerrainGraphics.ts:144