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Ice Layer Data Model (#1262)

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* prototype for ice seperation

* feat: migrate ice data to new data model and update version to 1.110.0

* refactor: update ice data handling and rendering for improved performance

* feat: integrate ice generation and recalculation in heightmap editing

* fix ice selection(hopefully)

* fix ice selection better(pls)

* refactor: remove redundant element selection in ice editing functions

* fix: clear ice data before generating glaciers and icebergs

* sparse array implementation with reduced updates

* fix logic chech in modules/dynamic/auto-update.js

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* fix: migrate ice data to new data model structure

* refactor: streamline ice generation process and clean up rendering functions

* refactor: simplify ice rendering logic by removing redundant clearing of old SVG

* fix: update editIce function to accept element parameter and improve logic for glacier handling

* ice drawing with only type on less occuring glaciers

* feat: add compactPackData function to filter out undefined glaciers and icebergs

* fix: clear existing ice elements before redrawing in editHeightmap function

* fix compact problems on autosave

* refactor: unify ice data structure and streamline ice element handling

* refactor: improve getNextId function to fill gaps in ice element IDs(optional commit)

* just to be sure

* bump version in html

* fix index.html script import

---------

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
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kruschen 2026-01-22 17:33:30 +01:00 • committed by GitHub
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commit e597d905eb
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43
public/modules/ui/layers.js
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@ -417,49 +417,6 @@ function toggleIce(event) {
}
}
function drawIce() {
TIME && console.time("drawIce");
const {cells, features} = grid;
const {temp, h} = cells;
Math.random = aleaPRNG(seed);
const ICEBERG_MAX_TEMP = 0;
const GLACIER_MAX_TEMP = -8;
const minMaxTemp = d3.min(temp);
// cold land: draw glaciers
{
const type = "iceShield";
const getType = cellId => (h[cellId] >= 20 && temp[cellId] <= GLACIER_MAX_TEMP ? type : null);
const isolines = getIsolines(grid, getType, {polygons: true});
isolines[type]?.polygons?.forEach(points => {
const clipped = clipPoly(points);
ice.append("polygon").attr("points", clipped).attr("type", type);
});
}
// cold water: draw icebergs
for (const cellId of grid.cells.i) {
const t = temp[cellId];
if (h[cellId] >= 20) continue; // no icebergs on land
if (t > ICEBERG_MAX_TEMP) continue; // too warm: no icebergs
if (features[cells.f[cellId]].type === "lake") continue; // no icebers on lakes
if (P(0.8)) continue; // skip most of eligible cells
const randomFactor = 0.8 + rand() * 0.4; // random size factor
let baseSize = (1 - normalize(t, minMaxTemp, 1)) * 0.8; // size: 0 = zero size, 1 = full size
if (cells.t[cellId] === -1) baseSize /= 1.3; // coasline: smaller icebergs
const size = minmax(rn(baseSize * randomFactor, 2), 0.1, 1);
const [cx, cy] = grid.points[cellId];
const points = getGridPolygon(cellId).map(([x, y]) => [rn(lerp(cx, x, size), 2), rn(lerp(cy, y, size), 2)]);
ice.append("polygon").attr("points", points).attr("cell", cellId).attr("size", size);
}
TIME && console.timeEnd("drawIce");
}
function toggleCultures(event) {
const cultures = pack.cultures.filter(c => c.i && !c.removed);
const empty = !cults.selectAll("path").size();