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refactor: grid generation

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Azgaar 2022-07-11 01:38:55 +03:00
parent d18636eb8f
commit e59b536e83
15 changed files with 157 additions and 105 deletions
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17
src/scripts/reGraph.ts
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@ -5,9 +5,12 @@ import {UINT16_MAX} from "constants";
import {createTypedArray} from "utils/arrayUtils";
import {calculateVoronoi, getPackPolygon} from "utils/graphUtils";
import {rn} from "utils/numberUtils";
import {DISTANCE_FIELD, MIN_LAND_HEIGHT} from "config/generation";
const {LAND_COAST, WATER_COAST, DEEPER_WATER} = DISTANCE_FIELD;
// recalculate Voronoi Graph to pack cells
export function reGraph() {
export function reGraph(grid: IGrid) {
TIME && console.time("reGraph");
const {cells: gridCells, points, features} = grid;
const newCells: {p: TPoints; g: number[]; h: number[]} = {p: [], g: [], h: []}; // store new data
@ -16,14 +19,18 @@ export function reGraph() {
for (const i of gridCells.i) {
const height = gridCells.h[i];
const type = gridCells.t[i];
if (height < 20 && type !== -1 && type !== -2) continue; // exclude all deep ocean points
if (type === -2 && (i % 4 === 0 || features[gridCells.f[i]].type === "lake")) continue; // exclude non-coastal lake points
if (height < MIN_LAND_HEIGHT && type !== WATER_COAST && type !== DEEPER_WATER) continue; // exclude all deep ocean points
const feature = features[gridCells.f[i]];
const isLake = feature && feature.type === "lake";
if (type === DEEPER_WATER && (i % 4 === 0 || isLake)) continue; // exclude non-coastal lake points
const [x, y] = points[i];
addNewPoint(i, x, y, height);
// add additional points for cells along coast
if (type === 1 || type === -1) {
if (type === LAND_COAST || type === WATER_COAST) {
if (gridCells.b[i]) continue; // not for near-border cells
gridCells.c[i].forEach(e => {
if (i > e) return;
@ -55,7 +62,7 @@ export function reGraph() {
pack.cells.p = newCells.p;
pack.cells.g = createTypedArray({maxValue: grid.points.length, from: newCells.g});
pack.cells.q = d3.quadtree(newCells.p.map(([x, y], i) => [x, y, i]));
pack.cells.h = createTypedArray({maxValue: 100, from: newCells.h});
pack.cells.h = new Uint8Array(newCells.h);
pack.cells.area = createTypedArray({maxValue: UINT16_MAX, from: pack.cells.i}).map(getCellArea);
TIME && console.timeEnd("reGraph");