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Elevated Lakes (#554)

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Fix #465 (river/lake) by @CanisArtorus 
* Give lake features a height attribute
* Outflow changes
* Outlets afterwards
* Fix river identities
* Pathfind big river across small-basin lakes.
* Scrap pathing, too ambitious
* Delete extraneous (de-)elevateLakes
* Code cleanup
* Attempt drawing improvements
* Make outflows a river again.
* Edge Cases. Explore drawing width.
* Pretty up. River initial width.
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Alexander James 2021-02-04 06:33:08 -07:00 • committed by GitHub
parent 40e5930571
commit ed33864e07
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5 changed files with 120 additions and 70 deletions
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18
main.js
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@ -530,7 +530,6 @@ function generate() {
reGraph();
drawCoastline();
elevateLakes();
Rivers.generate();
defineBiomes();
@ -1122,22 +1121,6 @@ function reMarkFeatures() {
TIME && console.timeEnd("reMarkFeatures");
}
// temporary elevate some lakes to resolve depressions and flux the water to form an open (exorheic) lake
function elevateLakes() {
if (templateInput.value === "Atoll") return; // no need for Atolls
TIME && console.time('elevateLakes');
const cells = pack.cells, features = pack.features;
const maxCells = cells.i.length / 100; // size limit; let big lakes be closed (endorheic)
cells.i.forEach(i => {
if (cells.h[i] >= 20) return;
if (features[cells.f[i]].group !== "freshwater" || features[cells.f[i]].cells > maxCells) return;
cells.h[i] = 20;
//debug.append("circle").attr("cx", cells.p[i][0]).attr("cy", cells.p[i][1]).attr("r", .5).attr("fill", "blue");
});
TIME && console.timeEnd('elevateLakes');
}
// assign biome id for each cell
function defineBiomes() {
TIME && console.time("defineBiomes");
@ -1145,7 +1128,6 @@ function defineBiomes() {
cells.biome = new Uint8Array(cells.i.length); // biomes array
for (const i of cells.i) {
if (f[cells.f[i]].group === "freshwater") cells.h[i] = 19; // de-elevate lakes; here to save some resources
const t = temp[cells.g[i]]; // cell temperature
const h = cells.h[i]; // cell height
const m = h < 20 ? 0 : calculateMoisture(i); // cell moisture