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Copy pathnature.js
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2084 lines (2022 loc) · 78.4 KB
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// Procedural NATURE sprites for the map-builder. Pure Canvas2D vector drawing.
// Registers every generator as a side effect of import via family({...}).
// Origin (0,0) is the CENTRE of a size x size box; +y points DOWN.
import { family } from './registry';
import {
makeRng, rand, randInt, pick, chance, jitter,
mix, darken, lighten, withAlpha,
roundRect, polygonPath, ngon, star, blob, fillStroke, hatch,
softShadow, clearShadow, groundShadow,
} from './draw';
// ---- local conveniences (no extra imports) ----
const LW = (s) => Math.max(1, s * 0.02);
function circle(ctx, cx, cy, r) {
ctx.beginPath();
ctx.arc(cx, cy, r, 0, Math.PI * 2);
ctx.closePath();
}
// stable seed pulled from the live rng so a clipped silhouette can be re-traced
const rseed = (rng) => (rng() * 1e9) >>> 0;
/* =====================================================================
* TREES
* ===================================================================== */
family({
id: 'nature.tree.oak', name: 'Oak Tree', category: 'nature',
tags: ['tree', 'forest', 'deciduous', 'oak', 'broadleaf'], size: 64, variants: 8,
draw(ctx, { size, rng, theme, tint }) {
ctx.save();
const s = size, t = theme.sprite, main = tint || t.leaf;
groundShadow(ctx, 0, s * 0.36, s * 0.28, s * 0.09);
roundRect(ctx, -s * 0.055, s * 0.04, s * 0.11, s * 0.32, s * 0.03);
fillStroke(ctx, t.trunk, t.ink, LW(s));
const cy = -s * 0.1, R = s * 0.32;
const lobes = randInt(rng, 6, 9);
for (let i = 0; i < lobes; i++) {
const a = (i / lobes) * Math.PI * 2 + jitter(rng, 0.25);
blob(ctx, Math.cos(a) * R * 0.55, cy + Math.sin(a) * R * 0.42, R * rand(rng, 0.45, 0.62), rng, 0.25, 9);
fillStroke(ctx, mix(main, t.leafDark, rand(rng, 0, 0.45)), null);
}
blob(ctx, 0, cy, R, rng, 0.16, 16);
fillStroke(ctx, main, t.ink, LW(s));
ctx.globalAlpha = 0.5;
blob(ctx, -R * 0.3, cy - R * 0.3, R * 0.42, rng, 0.25, 10);
fillStroke(ctx, lighten(main, 0.22), null);
ctx.globalAlpha = 1;
ctx.restore();
},
});
family({
id: 'nature.tree.pine', name: 'Pine Tree', category: 'nature',
tags: ['tree', 'conifer', 'pine', 'evergreen', 'forest'], size: 64, variants: 8,
draw(ctx, { size, rng, theme, tint }) {
ctx.save();
const s = size, t = theme.sprite, main = tint || t.leafDark;
groundShadow(ctx, 0, s * 0.4, s * 0.2, s * 0.07);
roundRect(ctx, -s * 0.04, s * 0.22, s * 0.08, s * 0.18, s * 0.02);
fillStroke(ctx, t.trunk, t.ink, LW(s));
const tiers = randInt(rng, 3, 5);
for (let i = 0; i < tiers; i++) {
const f = i / (tiers - 1 || 1);
const apexY = -s * 0.44 + f * s * 0.5;
const w = s * 0.14 + f * s * 0.26;
const h = s * 0.2 + f * s * 0.06;
polygonPath(ctx, [
{ x: 0, y: apexY },
{ x: w, y: apexY + h },
{ x: w * 0.45, y: apexY + h },
{ x: 0, y: apexY + h * 1.16 },
{ x: -w * 0.45, y: apexY + h },
{ x: -w, y: apexY + h },
]);
fillStroke(ctx, mix(main, t.leaf, (1 - f) * 0.0 + f * 0.22), t.ink, LW(s));
ctx.globalAlpha = 0.35;
polygonPath(ctx, [
{ x: 0, y: apexY },
{ x: -w * 0.55, y: apexY + h },
{ x: -w * 0.15, y: apexY + h },
]);
fillStroke(ctx, lighten(main, 0.18), null);
ctx.globalAlpha = 1;
}
ctx.restore();
},
});
family({
id: 'nature.tree.birch', name: 'Birch Tree', category: 'nature',
tags: ['tree', 'birch', 'deciduous', 'pale', 'forest'], size: 64, variants: 6,
draw(ctx, { size, rng, theme, tint }) {
ctx.save();
const s = size, t = theme.sprite, main = tint || t.leafLight;
groundShadow(ctx, 0, s * 0.36, s * 0.18, s * 0.06);
roundRect(ctx, -s * 0.035, -s * 0.18, s * 0.07, s * 0.54, s * 0.02);
fillStroke(ctx, lighten(t.stoneLight, 0.28), t.ink, LW(s));
ctx.fillStyle = t.ink;
ctx.globalAlpha = 0.7;
for (let i = 0; i < 5; i++) {
const y = -s * 0.12 + i * s * 0.1;
roundRect(ctx, -s * 0.03, y, s * 0.04, s * 0.015, s * 0.005);
ctx.fill();
}
ctx.globalAlpha = 1;
const cy = -s * 0.24, R = s * 0.24;
const lobes = randInt(rng, 4, 6);
for (let i = 0; i < lobes; i++) {
const a = rand(rng, 0, Math.PI * 2);
blob(ctx, Math.cos(a) * R * 0.6, cy + Math.sin(a) * R * 0.6, R * rand(rng, 0.4, 0.6), rng, 0.3, 9);
fillStroke(ctx, mix(main, t.leaf, rand(rng, 0, 0.5)), null);
}
blob(ctx, 0, cy, R, rng, 0.22, 14);
fillStroke(ctx, main, t.ink, LW(s));
ctx.globalAlpha = 0.45;
blob(ctx, -R * 0.25, cy - R * 0.25, R * 0.4, rng, 0.3, 9);
fillStroke(ctx, lighten(main, 0.2), null);
ctx.globalAlpha = 1;
ctx.restore();
},
});
family({
id: 'nature.tree.willow', name: 'Willow Tree', category: 'nature',
tags: ['tree', 'willow', 'weeping', 'drooping', 'riverside'], size: 68, variants: 6,
draw(ctx, { size, rng, theme, tint }) {
ctx.save();
const s = size, t = theme.sprite, main = tint || t.leaf;
groundShadow(ctx, 0, s * 0.36, s * 0.32, s * 0.08);
roundRect(ctx, -s * 0.05, 0, s * 0.1, s * 0.34, s * 0.03);
fillStroke(ctx, t.trunk, t.ink, LW(s));
const cy = -s * 0.12, R = s * 0.34;
blob(ctx, 0, cy, R, rng, 0.18, 16);
fillStroke(ctx, mix(main, t.leafDark, 0.2), t.ink, LW(s));
ctx.strokeStyle = mix(main, t.leafDark, 0.1);
ctx.lineWidth = Math.max(1, s * 0.03);
ctx.lineCap = 'round';
const strands = randInt(rng, 8, 12);
for (let i = 0; i < strands; i++) {
const x0 = rand(rng, -R, R) * 0.9;
const y0 = cy + Math.sqrt(Math.max(0, R * R - x0 * x0)) * 0.55;
const len = rand(rng, s * 0.12, s * 0.3);
ctx.beginPath();
ctx.moveTo(x0, y0);
ctx.quadraticCurveTo(x0 + jitter(rng, s * 0.04), y0 + len * 0.6, x0 + jitter(rng, s * 0.06), y0 + len);
ctx.stroke();
}
ctx.globalAlpha = 0.45;
blob(ctx, -R * 0.3, cy - R * 0.25, R * 0.4, rng, 0.25, 10);
fillStroke(ctx, lighten(main, 0.2), null);
ctx.globalAlpha = 1;
ctx.restore();
},
});
family({
id: 'nature.tree.palm', name: 'Palm Tree', category: 'nature',
tags: ['tree', 'palm', 'tropical', 'beach', 'coconut'], size: 68, variants: 8,
draw(ctx, { size, rng, theme, tint }) {
ctx.save();
const s = size, t = theme.sprite, main = tint || t.leaf;
groundShadow(ctx, s * 0.04, s * 0.4, s * 0.22, s * 0.07);
const lean = jitter(rng, s * 0.1);
ctx.lineCap = 'round';
ctx.strokeStyle = t.trunk;
ctx.lineWidth = Math.max(2, s * 0.08);
ctx.beginPath();
ctx.moveTo(0, s * 0.38);
ctx.quadraticCurveTo(lean * 0.6, s * 0.02, lean, -s * 0.22);
ctx.stroke();
ctx.strokeStyle = lighten(t.trunk, 0.22);
ctx.lineWidth = Math.max(1, s * 0.03);
ctx.beginPath();
ctx.moveTo(0, s * 0.38);
ctx.quadraticCurveTo(lean * 0.6, s * 0.02, lean, -s * 0.22);
ctx.stroke();
const tx = lean, ty = -s * 0.24;
const n = randInt(rng, 6, 8);
for (let i = 0; i < n; i++) {
const a = (i / n) * Math.PI * 2 + jitter(rng, 0.2);
const fl = rand(rng, s * 0.22, s * 0.32);
const ex = tx + Math.cos(a) * fl, ey = ty + Math.sin(a) * fl * 0.7 - s * 0.02;
const fc = mix(main, t.leafDark, rand(rng, 0, 0.4));
ctx.beginPath();
ctx.moveTo(tx, ty);
ctx.quadraticCurveTo((tx + ex) / 2 + Math.cos(a + 1.5) * s * 0.05, (ty + ey) / 2 + Math.sin(a + 1.5) * s * 0.05, ex, ey);
ctx.quadraticCurveTo((tx + ex) / 2 + Math.cos(a - 1.5) * s * 0.05, (ty + ey) / 2 + Math.sin(a - 1.5) * s * 0.05, tx, ty);
ctx.closePath();
fillStroke(ctx, fc, t.ink, Math.max(1, s * 0.014));
}
ctx.fillStyle = t.woodDark;
for (let i = 0; i < randInt(rng, 2, 3); i++) {
circle(ctx, tx + jitter(rng, s * 0.06), ty + rand(rng, 0, s * 0.05), s * 0.035);
ctx.fill();
}
ctx.restore();
},
});
family({
id: 'nature.tree.dead', name: 'Dead Tree', category: 'nature',
tags: ['tree', 'dead', 'bare', 'branches', 'spooky', 'winter'], size: 64, variants: 6,
draw(ctx, { size, rng, theme }) {
ctx.save();
const s = size, t = theme.sprite;
groundShadow(ctx, 0, s * 0.36, s * 0.18, s * 0.06);
ctx.strokeStyle = t.woodDark;
ctx.lineCap = 'round';
ctx.lineJoin = 'round';
function branch(x, y, ang, len, w, depth) {
const ex = x + Math.cos(ang) * len, ey = y + Math.sin(ang) * len;
ctx.lineWidth = Math.max(1, w);
ctx.beginPath();
ctx.moveTo(x, y);
ctx.lineTo(ex, ey);
ctx.stroke();
if (depth <= 0 || len < s * 0.06) return;
const k = randInt(rng, 2, 3);
for (let i = 0; i < k; i++) {
branch(ex, ey, ang - 0.6 + (i / (k - 1 || 1)) * 1.2 + jitter(rng, 0.3), len * rand(rng, 0.6, 0.78), w * 0.62, depth - 1);
}
}
branch(0, s * 0.36, -Math.PI / 2 + jitter(rng, 0.15), s * 0.26, s * 0.09, randInt(rng, 3, 4));
ctx.restore();
},
});
family({
id: 'nature.tree.maple', name: 'Autumn Maple', category: 'nature',
tags: ['tree', 'maple', 'autumn', 'fall', 'deciduous'], size: 64, variants: 8,
draw(ctx, { size, rng, theme, tint }) {
ctx.save();
const s = size, t = theme.sprite;
const cols = [t.fire, t.gold, t.danger, t.roof, mix(t.fire, t.gold, 0.4)];
const main = tint || t.fire;
groundShadow(ctx, 0, s * 0.36, s * 0.27, s * 0.08);
roundRect(ctx, -s * 0.05, s * 0.04, s * 0.1, s * 0.32, s * 0.03);
fillStroke(ctx, t.trunk, t.ink, LW(s));
const cy = -s * 0.1, R = s * 0.32;
const lobes = randInt(rng, 7, 10);
for (let i = 0; i < lobes; i++) {
const a = rand(rng, 0, Math.PI * 2);
blob(ctx, Math.cos(a) * R * 0.55, cy + Math.sin(a) * R * 0.45, R * rand(rng, 0.4, 0.6), rng, 0.28, 9);
fillStroke(ctx, pick(rng, cols), null);
}
blob(ctx, 0, cy, R, rng, 0.18, 15);
fillStroke(ctx, main, t.ink, LW(s));
ctx.globalAlpha = 0.5;
blob(ctx, -R * 0.3, cy - R * 0.3, R * 0.4, rng, 0.25, 10);
fillStroke(ctx, lighten(t.gold, 0.2), null);
ctx.globalAlpha = 0.85;
for (let i = 0; i < randInt(rng, 3, 6); i++) {
ctx.fillStyle = pick(rng, [t.fire, t.gold, t.danger, t.roof]);
star(ctx, rand(rng, -R, R), rand(rng, s * 0.16, s * 0.34), 5, s * 0.03, s * 0.012, rand(rng, 0, 6));
ctx.fill();
}
ctx.globalAlpha = 1;
ctx.restore();
},
});
family({
id: 'nature.tree.snowpine', name: 'Snowy Pine', category: 'nature',
tags: ['tree', 'pine', 'conifer', 'snow', 'winter'], size: 64, variants: 6,
draw(ctx, { size, rng, theme, tint }) {
ctx.save();
const s = size, t = theme.sprite, main = tint || t.leafDark;
groundShadow(ctx, 0, s * 0.4, s * 0.2, s * 0.07);
roundRect(ctx, -s * 0.04, s * 0.22, s * 0.08, s * 0.18, s * 0.02);
fillStroke(ctx, t.trunk, t.ink, LW(s));
const tiers = randInt(rng, 3, 4);
for (let i = 0; i < tiers; i++) {
const f = i / (tiers - 1 || 1);
const apexY = -s * 0.44 + f * s * 0.5;
const w = s * 0.14 + f * s * 0.26;
const h = s * 0.2 + f * s * 0.06;
polygonPath(ctx, [
{ x: 0, y: apexY },
{ x: w, y: apexY + h },
{ x: 0, y: apexY + h * 1.16 },
{ x: -w, y: apexY + h },
]);
fillStroke(ctx, main, t.ink, LW(s));
polygonPath(ctx, [
{ x: 0, y: apexY },
{ x: w * 0.7, y: apexY + h * 0.7 },
{ x: 0, y: apexY + h * 0.5 },
{ x: -w * 0.7, y: apexY + h * 0.7 },
]);
fillStroke(ctx, t.snow, null);
}
ctx.fillStyle = withAlpha(t.white, 0.85);
for (let i = 0; i < randInt(rng, 4, 7); i++) {
circle(ctx, rand(rng, -s * 0.3, s * 0.3), rand(rng, -s * 0.36, s * 0.34), s * 0.012);
ctx.fill();
}
ctx.restore();
},
});
family({
id: 'nature.tree.jungle', name: 'Jungle Tree', category: 'nature',
tags: ['tree', 'jungle', 'broadleaf', 'tropical', 'rainforest'], size: 72, variants: 6,
draw(ctx, { size, rng, theme, tint }) {
ctx.save();
const s = size, t = theme.sprite, main = tint || t.leaf;
groundShadow(ctx, 0, s * 0.38, s * 0.32, s * 0.09);
roundRect(ctx, -s * 0.06, s * 0.06, s * 0.12, s * 0.3, s * 0.03);
fillStroke(ctx, t.trunk, t.ink, LW(s));
const cy = -s * 0.08, R = s * 0.36;
for (let i = 0; i < randInt(rng, 7, 10); i++) {
const a = rand(rng, 0, Math.PI * 2), d = R * rand(rng, 0.5, 0.9);
const lx = Math.cos(a) * d, ly = cy + Math.sin(a) * d * 0.8;
ctx.save();
ctx.translate(lx, ly);
ctx.rotate(a);
ctx.beginPath();
ctx.ellipse(0, 0, R * 0.32, R * 0.15, 0, 0, Math.PI * 2);
ctx.closePath();
fillStroke(ctx, mix(main, t.leafDark, rand(rng, 0, 0.5)), t.ink, Math.max(1, s * 0.012));
ctx.restore();
}
blob(ctx, 0, cy, R * 0.8, rng, 0.2, 15);
fillStroke(ctx, main, t.ink, LW(s));
ctx.globalAlpha = 0.5;
blob(ctx, -R * 0.25, cy - R * 0.2, R * 0.4, rng, 0.25, 10);
fillStroke(ctx, t.leafLight, null);
ctx.globalAlpha = 1;
ctx.restore();
},
});
family({
id: 'nature.tree.cypress', name: 'Cypress Tree', category: 'nature',
tags: ['tree', 'cypress', 'column', 'mediterranean', 'evergreen'], size: 64, variants: 6,
draw(ctx, { size, rng, theme, tint }) {
ctx.save();
const s = size, t = theme.sprite, main = tint || t.leafDark;
groundShadow(ctx, 0, s * 0.4, s * 0.13, s * 0.05);
roundRect(ctx, -s * 0.025, s * 0.28, s * 0.05, s * 0.12, s * 0.01);
fillStroke(ctx, t.trunk, t.ink, LW(s));
const w = s * (0.14 + rand(rng, 0, 0.04)), topY = -s * 0.38, botY = s * 0.3;
ctx.beginPath();
ctx.moveTo(0, topY);
ctx.bezierCurveTo(w, topY + s * 0.2, w, botY - s * 0.06, 0, botY);
ctx.bezierCurveTo(-w, botY - s * 0.06, -w, topY + s * 0.2, 0, topY);
ctx.closePath();
fillStroke(ctx, mix(main, t.leaf, 0.12), t.ink, LW(s));
ctx.strokeStyle = withAlpha(t.leafDark, 0.5);
ctx.lineWidth = Math.max(1, s * 0.015);
for (let i = 0; i < 5; i++) {
const x = rand(rng, -w * 0.7, w * 0.7);
ctx.beginPath();
ctx.moveTo(x, topY + s * 0.06);
ctx.lineTo(x + jitter(rng, s * 0.02), botY - s * 0.04);
ctx.stroke();
}
ctx.globalAlpha = 0.5;
ctx.beginPath();
ctx.ellipse(-w * 0.35, -s * 0.06, w * 0.4, s * 0.22, 0, 0, Math.PI * 2);
ctx.closePath();
fillStroke(ctx, lighten(main, 0.2), null);
ctx.globalAlpha = 1;
ctx.restore();
},
});
family({
id: 'nature.tree.fruit', name: 'Fruit Tree', category: 'nature',
tags: ['tree', 'fruit', 'apple', 'orchard', 'deciduous'], size: 64, variants: 8,
draw(ctx, { size, rng, theme, tint }) {
ctx.save();
const s = size, t = theme.sprite, main = tint || t.leaf;
groundShadow(ctx, 0, s * 0.36, s * 0.26, s * 0.08);
roundRect(ctx, -s * 0.05, s * 0.04, s * 0.1, s * 0.32, s * 0.03);
fillStroke(ctx, t.trunk, t.ink, LW(s));
const cy = -s * 0.08, R = s * 0.3;
for (let i = 0; i < randInt(rng, 5, 7); i++) {
const a = rand(rng, 0, Math.PI * 2);
blob(ctx, Math.cos(a) * R * 0.5, cy + Math.sin(a) * R * 0.45, R * rand(rng, 0.45, 0.6), rng, 0.25, 9);
fillStroke(ctx, mix(main, t.leafDark, rand(rng, 0, 0.4)), null);
}
blob(ctx, 0, cy, R, rng, 0.16, 15);
fillStroke(ctx, main, t.ink, LW(s));
const fc = pick(rng, [t.danger, t.gold, t.roof, t.flag]);
ctx.fillStyle = fc;
const fruit = [];
for (let i = 0; i < randInt(rng, 5, 9); i++) {
const a = rand(rng, 0, Math.PI * 2), d = R * rand(rng, 0.2, 0.85);
const fx = Math.cos(a) * d, fy = cy + Math.sin(a) * d * 0.9;
fruit.push([fx, fy]);
circle(ctx, fx, fy, s * 0.028);
ctx.fill();
}
ctx.fillStyle = lighten(fc, 0.35);
ctx.globalAlpha = 0.8;
for (const [fx, fy] of fruit) {
circle(ctx, fx - s * 0.01, fy - s * 0.01, s * 0.01);
ctx.fill();
}
ctx.globalAlpha = 1;
ctx.restore();
},
});
family({
id: 'nature.tree.poplar', name: 'Poplar Tree', category: 'nature',
tags: ['tree', 'poplar', 'column', 'tall', 'deciduous'], size: 64, variants: 6,
draw(ctx, { size, rng, theme, tint }) {
ctx.save();
const s = size, t = theme.sprite, main = tint || t.leaf;
groundShadow(ctx, 0, s * 0.4, s * 0.12, s * 0.05);
roundRect(ctx, -s * 0.02, s * 0.26, s * 0.04, s * 0.14, s * 0.01);
fillStroke(ctx, t.trunk, t.ink, LW(s));
ctx.save();
ctx.translate(0, -s * 0.06);
ctx.beginPath();
ctx.ellipse(0, 0, s * 0.15, s * 0.34, 0, 0, Math.PI * 2);
ctx.closePath();
fillStroke(ctx, mix(main, t.leafDark, 0.25), t.ink, LW(s));
ctx.restore();
for (let i = 0; i < 7; i++) {
blob(ctx, jitter(rng, s * 0.06), -s * 0.34 + i * s * 0.095, s * 0.1, rng, 0.35, 9);
fillStroke(ctx, mix(main, t.leaf, rand(rng, 0, 0.4)), null);
}
ctx.globalAlpha = 0.4;
for (let i = 0; i < 3; i++) {
blob(ctx, -s * 0.05, -s * 0.24 + i * s * 0.12, s * 0.07, rng, 0.3, 8);
fillStroke(ctx, t.leafLight, null);
}
ctx.globalAlpha = 1;
ctx.restore();
},
});
family({
id: 'nature.tree.mangrove', name: 'Mangrove Tree', category: 'nature',
tags: ['tree', 'mangrove', 'swamp', 'roots', 'wetland'], size: 72, variants: 6,
draw(ctx, { size, rng, theme, tint }) {
ctx.save();
const s = size, t = theme.sprite, main = tint || t.leaf;
groundShadow(ctx, 0, s * 0.4, s * 0.34, s * 0.06, withAlpha(theme.terrain.waterDeep, 0.3));
ctx.strokeStyle = t.woodDark;
ctx.lineWidth = Math.max(1, s * 0.035);
ctx.lineCap = 'round';
for (let i = 0; i < randInt(rng, 5, 7); i++) {
const x = rand(rng, -s * 0.3, s * 0.3);
ctx.beginPath();
ctx.moveTo(x * 0.4, s * 0.1);
ctx.quadraticCurveTo(x * 0.8, s * 0.34, x, s * 0.4);
ctx.stroke();
}
roundRect(ctx, -s * 0.05, -s * 0.02, s * 0.1, s * 0.16, s * 0.02);
fillStroke(ctx, t.trunk, t.ink, LW(s));
const cy = -s * 0.16, R = s * 0.34;
for (let i = 0; i < randInt(rng, 5, 7); i++) {
const a = rand(rng, 0, Math.PI * 2);
blob(ctx, Math.cos(a) * R * 0.55, cy + Math.sin(a) * R * 0.3, R * rand(rng, 0.4, 0.55), rng, 0.25, 9);
fillStroke(ctx, mix(main, t.leafDark, rand(rng, 0, 0.4)), null);
}
ctx.beginPath();
ctx.ellipse(0, cy, R, R * 0.62, 0, 0, Math.PI * 2);
ctx.closePath();
fillStroke(ctx, main, t.ink, LW(s));
ctx.globalAlpha = 0.5;
blob(ctx, -R * 0.3, cy - R * 0.18, R * 0.34, rng, 0.3, 9);
fillStroke(ctx, t.leafLight, null);
ctx.globalAlpha = 1;
ctx.restore();
},
});
/* =====================================================================
* SHRUBS / GROUND WOOD
* ===================================================================== */
family({
id: 'nature.shrub.bush', name: 'Bush', category: 'nature',
tags: ['bush', 'shrub', 'foliage', 'berries', 'undergrowth'], size: 56, variants: 8,
draw(ctx, { size, rng, theme, tint }) {
ctx.save();
const s = size, t = theme.sprite, main = tint || t.leaf;
groundShadow(ctx, 0, s * 0.32, s * 0.32, s * 0.08);
const cy = s * 0.04, R = s * 0.3;
for (let i = 0; i < randInt(rng, 4, 6); i++) {
const a = rand(rng, 0, Math.PI * 2), d = R * rand(rng, 0.3, 0.7);
blob(ctx, Math.cos(a) * d, cy + Math.sin(a) * d * 0.6, R * rand(rng, 0.4, 0.58), rng, 0.3, 10);
fillStroke(ctx, mix(main, t.leafDark, rand(rng, 0, 0.5)), null);
}
blob(ctx, 0, cy, R * 0.78, rng, 0.25, 13);
fillStroke(ctx, main, t.ink, LW(s));
ctx.globalAlpha = 0.5;
for (let i = 0; i < 3; i++) {
blob(ctx, rand(rng, -R * 0.4, R * 0.4), cy - R * 0.2, R * 0.25, rng, 0.3, 8);
fillStroke(ctx, t.leafLight, null);
}
ctx.globalAlpha = 1;
if (chance(rng, 0.5)) {
ctx.fillStyle = pick(rng, [t.danger, t.accent, t.flag]);
for (let i = 0; i < randInt(rng, 4, 8); i++) {
circle(ctx, rand(rng, -R * 0.6, R * 0.6), cy + rand(rng, -R * 0.4, R * 0.4), s * 0.022);
ctx.fill();
}
}
ctx.restore();
},
});
family({
id: 'nature.shrub.flowering', name: 'Flowering Shrub', category: 'nature',
tags: ['shrub', 'bush', 'flowers', 'garden', 'foliage'], size: 60, variants: 6,
draw(ctx, { size, rng, theme, tint }) {
ctx.save();
const s = size, t = theme.sprite, main = tint || t.grassDark;
groundShadow(ctx, 0, s * 0.32, s * 0.32, s * 0.07);
const n = randInt(rng, 2, 3);
for (let i = 0; i < n; i++) {
const x = (i - (n - 1) / 2) * s * 0.22;
const r = s * rand(rng, 0.16, 0.22);
blob(ctx, x, s * 0.08, r, rng, 0.3, 11);
fillStroke(ctx, mix(main, t.leafDark, 0.2), t.ink, LW(s));
ctx.globalAlpha = 0.5;
blob(ctx, x - r * 0.3, s * 0.08 - r * 0.3, r * 0.4, rng, 0.3, 8);
fillStroke(ctx, t.leafLight, null);
ctx.globalAlpha = 1;
ctx.fillStyle = pick(rng, [t.white, t.gold, t.accent, t.flag]);
for (let k = 0; k < randInt(rng, 3, 6); k++) {
circle(ctx, x + rand(rng, -r, r), s * 0.08 + rand(rng, -r, r * 0.6), s * 0.018);
ctx.fill();
}
}
ctx.restore();
},
});
family({
id: 'nature.shrub.hedge', name: 'Hedgerow', category: 'nature',
tags: ['hedge', 'hedgerow', 'shrub', 'trimmed', 'border'], size: 72, variants: 6,
draw(ctx, { size, rng, theme, tint }) {
ctx.save();
const s = size, t = theme.sprite, main = tint || t.leafDark;
groundShadow(ctx, 0, s * 0.32, s * 0.42, s * 0.06);
const w = s * 0.8, h = s * 0.34, x = -w / 2, y = -s * 0.02;
roundRect(ctx, x, y, w, h, s * 0.04);
fillStroke(ctx, mix(main, t.leaf, 0.12), t.ink, LW(s));
ctx.fillStyle = mix(main, t.leaf, 0.25);
for (let i = 0; i < 8; i++) {
const bx = x + (i + 0.5) * w / 8;
blob(ctx, bx, y, (w / 16) * rand(rng, 1, 1.3), rng, 0.3, 8);
ctx.fill();
}
hatch(ctx, x, y, w, h, s * 0.06, Math.PI / 4, withAlpha(t.leafDark, 0.3), Math.max(1, s * 0.01));
ctx.globalAlpha = 0.4;
roundRect(ctx, x + s * 0.03, y + s * 0.05, w - s * 0.06, h * 0.3, s * 0.03);
fillStroke(ctx, t.leafLight, null);
ctx.globalAlpha = 1;
ctx.restore();
},
});
family({
id: 'nature.shrub.stump', name: 'Tree Stump', category: 'nature',
tags: ['stump', 'wood', 'logged', 'rings', 'tree'], size: 56, variants: 6,
draw(ctx, { size, rng, theme }) {
ctx.save();
const s = size, t = theme.sprite;
groundShadow(ctx, 0, s * 0.28, s * 0.26, s * 0.08);
roundRect(ctx, -s * 0.2, -s * 0.02, s * 0.4, s * 0.22, s * 0.04);
fillStroke(ctx, t.woodDark, t.ink, LW(s));
ctx.strokeStyle = darken(t.woodDark, 0.2);
ctx.globalAlpha = 0.6;
ctx.lineWidth = Math.max(1, s * 0.012);
for (let i = 0; i < 6; i++) {
const x = -s * 0.18 + i * s * 0.072;
ctx.beginPath();
ctx.moveTo(x, s * 0.03);
ctx.lineTo(x, s * 0.18);
ctx.stroke();
}
ctx.globalAlpha = 1;
ctx.beginPath();
ctx.ellipse(0, -s * 0.02, s * 0.2, s * 0.1, 0, 0, Math.PI * 2);
ctx.closePath();
fillStroke(ctx, t.wood, t.ink, LW(s));
ctx.strokeStyle = t.woodDark;
ctx.lineWidth = Math.max(1, s * 0.012);
for (let i = 1; i <= 3; i++) {
ctx.beginPath();
ctx.ellipse(jitter(rng, s * 0.01), -s * 0.02, s * 0.2 * i / 4, s * 0.1 * i / 4, 0, 0, Math.PI * 2);
ctx.stroke();
}
ctx.beginPath();
ctx.moveTo(0, -s * 0.02);
ctx.lineTo(s * 0.14, -s * 0.06);
ctx.stroke();
ctx.restore();
},
});
family({
id: 'nature.shrub.log', name: 'Fallen Log', category: 'nature',
tags: ['log', 'wood', 'fallen', 'trunk', 'moss'], size: 64, variants: 6,
draw(ctx, { size, rng, theme }) {
ctx.save();
const s = size, t = theme.sprite;
groundShadow(ctx, 0, s * 0.18, s * 0.4, s * 0.09);
ctx.rotate(jitter(rng, 0.15));
roundRect(ctx, -s * 0.4, -s * 0.1, s * 0.8, s * 0.2, s * 0.1);
fillStroke(ctx, t.wood, t.ink, LW(s));
ctx.strokeStyle = darken(t.woodDark, 0.0);
ctx.globalAlpha = 0.5;
ctx.lineWidth = Math.max(1, s * 0.012);
for (let i = 0; i < 3; i++) {
const y = -s * 0.05 + i * s * 0.05;
ctx.beginPath();
ctx.moveTo(-s * 0.34, y);
ctx.lineTo(s * 0.3, y);
ctx.stroke();
}
ctx.globalAlpha = 1;
ctx.beginPath();
ctx.ellipse(-s * 0.36, 0, s * 0.05, s * 0.1, 0, 0, Math.PI * 2);
ctx.closePath();
fillStroke(ctx, lighten(t.wood, 0.15), t.ink, LW(s));
ctx.strokeStyle = t.woodDark;
for (let i = 1; i <= 2; i++) {
ctx.beginPath();
ctx.ellipse(-s * 0.36, 0, s * 0.05 * i / 3, s * 0.1 * i / 3, 0, 0, Math.PI * 2);
ctx.stroke();
}
if (chance(rng, 0.6)) {
ctx.fillStyle = withAlpha(t.leaf, 0.7);
for (let i = 0; i < randInt(rng, 3, 6); i++) {
blob(ctx, rand(rng, -s * 0.3, s * 0.25), -s * 0.08, s * 0.05, rng, 0.4, 7);
ctx.fill();
}
}
ctx.restore();
},
});
/* =====================================================================
* MOUNTAINS / ROCKS / TERRAIN
* ===================================================================== */
family({
id: 'nature.mountain.peak', name: 'Mountain Peak', category: 'nature',
tags: ['mountain', 'peak', 'rock', 'summit'], size: 72, variants: 6,
draw(ctx, { size, rng, theme, tint }) {
ctx.save();
const s = size, t = theme.sprite, main = tint || t.stone;
groundShadow(ctx, 0, s * 0.38, s * 0.34, s * 0.06);
const apex = { x: jitter(rng, s * 0.05), y: -s * 0.4 };
const bl = { x: -s * 0.4, y: s * 0.34 }, br = { x: s * 0.4, y: s * 0.34 };
polygonPath(ctx, [apex, bl, br]);
fillStroke(ctx, main, t.ink, LW(s));
polygonPath(ctx, [apex, { x: apex.x, y: s * 0.34 }, br]);
fillStroke(ctx, darken(main, 0.18), null);
ctx.globalAlpha = 0.5;
polygonPath(ctx, [apex, { x: apex.x - s * 0.14, y: s * 0.0 }, { x: apex.x, y: -s * 0.08 }]);
fillStroke(ctx, lighten(main, 0.2), null);
ctx.globalAlpha = 1;
if (chance(rng, 0.6)) {
polygonPath(ctx, [
apex,
{ x: apex.x - s * 0.13, y: -s * 0.16 },
{ x: apex.x - s * 0.04, y: -s * 0.2 },
{ x: apex.x + s * 0.05, y: -s * 0.15 },
{ x: apex.x + s * 0.12, y: -s * 0.17 },
]);
fillStroke(ctx, t.snow, null);
}
polygonPath(ctx, [apex, bl, br]);
fillStroke(ctx, null, t.ink, LW(s));
ctx.restore();
},
});
family({
id: 'nature.mountain.range', name: 'Mountain Range', category: 'nature',
tags: ['mountain', 'range', 'peaks', 'ridge', 'massif'], size: 88, variants: 6,
draw(ctx, { size, rng, theme, tint }) {
ctx.save();
const s = size, t = theme.sprite, main = tint || t.stone;
groundShadow(ctx, 0, s * 0.4, s * 0.46, s * 0.05);
const farN = randInt(rng, 2, 3);
for (let i = 0; i < farN; i++) {
const x = (i - (farN - 1) / 2) * s * 0.22 + jitter(rng, s * 0.03);
const apexY = -s * rand(rng, 0.16, 0.28);
polygonPath(ctx, [{ x, y: apexY }, { x: x - s * 0.22, y: s * 0.3 }, { x: x + s * 0.22, y: s * 0.3 }]);
fillStroke(ctx, lighten(main, 0.16), t.ink, LW(s));
polygonPath(ctx, [{ x, y: apexY }, { x: x - s * 0.05, y: apexY + s * 0.08 }, { x: x + s * 0.05, y: apexY + s * 0.08 }]);
fillStroke(ctx, t.snow, null);
}
const nearN = randInt(rng, 2, 3);
for (let i = 0; i < nearN; i++) {
const x = (i - (nearN - 1) / 2) * s * 0.24 + jitter(rng, s * 0.03);
const apexY = -s * rand(rng, 0.3, 0.42);
polygonPath(ctx, [{ x, y: apexY }, { x: x - s * 0.26, y: s * 0.36 }, { x: x + s * 0.26, y: s * 0.36 }]);
fillStroke(ctx, main, t.ink, LW(s));
polygonPath(ctx, [{ x, y: apexY }, { x: x + s * 0.26, y: s * 0.36 }, { x, y: s * 0.36 }]);
fillStroke(ctx, darken(main, 0.16), null);
polygonPath(ctx, [
{ x, y: apexY },
{ x: x - s * 0.08, y: apexY + s * 0.12 },
{ x, y: apexY + s * 0.08 },
{ x: x + s * 0.07, y: apexY + s * 0.13 },
]);
fillStroke(ctx, t.snow, null);
polygonPath(ctx, [{ x, y: apexY }, { x: x - s * 0.26, y: s * 0.36 }, { x: x + s * 0.26, y: s * 0.36 }]);
fillStroke(ctx, null, t.ink, LW(s));
}
ctx.restore();
},
});
family({
id: 'nature.mountain.snowcap', name: 'Snow-Capped Peak', category: 'nature',
tags: ['mountain', 'snow', 'peak', 'alpine', 'winter'], size: 76, variants: 6,
draw(ctx, { size, rng, theme, tint }) {
ctx.save();
const s = size, t = theme.sprite, main = tint || t.stoneDark;
groundShadow(ctx, 0, s * 0.38, s * 0.36, s * 0.06);
const apex = { x: jitter(rng, s * 0.04), y: -s * 0.42 };
const bl = { x: -s * 0.42, y: s * 0.34 }, br = { x: s * 0.42, y: s * 0.34 };
polygonPath(ctx, [apex, bl, br]);
fillStroke(ctx, main, t.ink, LW(s));
polygonPath(ctx, [apex, { x: apex.x, y: s * 0.34 }, br]);
fillStroke(ctx, darken(main, 0.16), null);
const snowY = -s * 0.04;
polygonPath(ctx, [
apex,
{ x: -s * 0.22, y: snowY },
{ x: -s * 0.12, y: snowY - s * 0.06 },
{ x: 0, y: snowY + s * 0.02 },
{ x: s * 0.1, y: snowY - s * 0.05 },
{ x: s * 0.22, y: snowY },
]);
fillStroke(ctx, t.snow, null);
ctx.globalAlpha = 0.4;
polygonPath(ctx, [apex, { x: s * 0.22, y: snowY }, { x: s * 0.1, y: snowY - s * 0.05 }, { x: apex.x, y: snowY - s * 0.02 }]);
fillStroke(ctx, mix(t.snow, t.water, 0.25), null);
ctx.globalAlpha = 1;
polygonPath(ctx, [apex, bl, br]);
fillStroke(ctx, null, t.ink, LW(s));
ctx.restore();
},
});
family({
id: 'nature.mountain.volcano', name: 'Volcano', category: 'nature',
tags: ['volcano', 'mountain', 'lava', 'smoke', 'eruption'], size: 80, variants: 6,
draw(ctx, { size, rng, theme, tint }) {
ctx.save();
const s = size, t = theme.sprite, main = tint || t.stoneDark;
groundShadow(ctx, 0, s * 0.38, s * 0.38, s * 0.06);
const topL = -s * 0.14, topR = s * 0.14, topY = -s * 0.18, bl = -s * 0.4, br = s * 0.4, by = s * 0.34;
polygonPath(ctx, [{ x: topL, y: topY }, { x: topR, y: topY }, { x: br, y: by }, { x: bl, y: by }]);
fillStroke(ctx, main, t.ink, LW(s));
polygonPath(ctx, [{ x: 0, y: topY }, { x: topR, y: topY }, { x: br, y: by }, { x: 0, y: by }]);
fillStroke(ctx, darken(main, 0.18), null);
ctx.strokeStyle = t.fire;
ctx.lineWidth = Math.max(1, s * 0.02);
ctx.lineCap = 'round';
for (let i = 0; i < randInt(rng, 1, 3); i++) {
const dir = pick(rng, [-1, 1]);
ctx.beginPath();
ctx.moveTo(dir * s * 0.06, topY);
ctx.quadraticCurveTo(dir * s * 0.18, s * 0.05, dir * s * 0.2, s * 0.2);
ctx.stroke();
}
ctx.beginPath();
ctx.ellipse(0, topY, s * 0.14, s * 0.05, 0, 0, Math.PI * 2);
ctx.closePath();
fillStroke(ctx, t.danger, t.ink, LW(s));
ctx.beginPath();
ctx.ellipse(0, topY, s * 0.1, s * 0.035, 0, 0, Math.PI * 2);
ctx.closePath();
fillStroke(ctx, t.fire, null);
ctx.beginPath();
ctx.ellipse(0, topY, s * 0.05, s * 0.018, 0, 0, Math.PI * 2);
ctx.closePath();
fillStroke(ctx, lighten(t.fire, 0.3), null);
ctx.fillStyle = withAlpha(t.stone, 0.5);
for (let i = 0; i < randInt(rng, 3, 5); i++) {
blob(ctx, jitter(rng, s * 0.06), topY - s * 0.08 - i * s * 0.07, s * 0.07 + i * s * 0.012, rng, 0.4, 9);
ctx.fill();
}
ctx.restore();
},
});
family({
id: 'nature.mountain.mesa', name: 'Mesa Butte', category: 'nature',
tags: ['mesa', 'butte', 'plateau', 'desert', 'rock'], size: 76, variants: 6,
draw(ctx, { size, rng, theme, tint }) {
ctx.save();
const s = size, t = theme.sprite, main = tint || t.brick;
groundShadow(ctx, 0, s * 0.36, s * 0.4, s * 0.06);
const topY = -s * 0.2, by = s * 0.32, topHalf = s * 0.3, botHalf = s * 0.36;
polygonPath(ctx, [{ x: -topHalf, y: topY }, { x: topHalf, y: topY }, { x: botHalf, y: by }, { x: -botHalf, y: by }]);
fillStroke(ctx, main, t.ink, LW(s));
ctx.strokeStyle = darken(main, 0.25);
ctx.globalAlpha = 0.55;
ctx.lineWidth = Math.max(1, s * 0.012);
for (let i = 1; i <= 3; i++) {
const y = topY + i * (by - topY) / 4;
ctx.beginPath();
ctx.moveTo(-topHalf - i * s * 0.015, y);
ctx.lineTo(topHalf + i * s * 0.015, y);
ctx.stroke();
}
ctx.globalAlpha = 0.5;
polygonPath(ctx, [{ x: topHalf, y: topY }, { x: botHalf, y: by }, { x: botHalf - s * 0.1, y: by }, { x: topHalf - s * 0.06, y: topY }]);
fillStroke(ctx, darken(main, 0.2), null);
ctx.globalAlpha = 1;
polygonPath(ctx, [
{ x: -topHalf, y: topY },
{ x: topHalf, y: topY },
{ x: topHalf - s * 0.04, y: topY - s * 0.05 },
{ x: -topHalf + s * 0.04, y: topY - s * 0.05 },
]);
fillStroke(ctx, lighten(main, 0.18), t.ink, LW(s));
ctx.restore();
},
});
family({
id: 'nature.mountain.crag', name: 'Rocky Crag', category: 'nature',
tags: ['crag', 'rock', 'jagged', 'outcrop', 'spire'], size: 68, variants: 6,
draw(ctx, { size, rng, theme, tint }) {
ctx.save();
const s = size, t = theme.sprite, main = tint || t.stoneDark;
groundShadow(ctx, 0, s * 0.34, s * 0.34, s * 0.06);
const n = randInt(rng, 3, 5);
for (let i = 0; i < n; i++) {
const cx = (i - (n - 1) / 2) * s * 0.16 + jitter(rng, s * 0.03);
const h = rand(rng, 0.3, 0.46), w = rand(rng, 0.1, 0.16);
polygonPath(ctx, [{ x: cx, y: -s * h }, { x: cx + s * w, y: s * 0.3 }, { x: cx - s * w, y: s * 0.3 }]);
fillStroke(ctx, mix(main, t.stone, rand(rng, 0, 0.4)), t.ink, LW(s));
polygonPath(ctx, [{ x: cx, y: -s * h }, { x: cx + s * w, y: s * 0.3 }, { x: cx, y: s * 0.3 }]);
fillStroke(ctx, darken(main, 0.2), null);
}
ctx.restore();
},
});
family({
id: 'nature.rock.boulder', name: 'Boulder', category: 'nature',
tags: ['rock', 'boulder', 'granite', 'stone'], size: 64, variants: 8,
draw(ctx, { size, rng, theme, tint }) {
ctx.save();
const s = size, t = theme.sprite, main = tint || t.stone;
groundShadow(ctx, 0, s * 0.28, s * 0.36, s * 0.1);
softShadow(ctx, theme.sprite.shadow, s * 0.08, s * 0.03);
const seed = rseed(rng);
blob(ctx, 0, s * 0.02, s * 0.34, makeRng(seed), 0.18, 12);
fillStroke(ctx, main, null);
clearShadow(ctx);
ctx.save();
blob(ctx, 0, s * 0.02, s * 0.34, makeRng(seed), 0.18, 12);
ctx.clip();
ctx.globalAlpha = 0.5;
ctx.fillStyle = darken(main, 0.2);
blob(ctx, s * 0.12, s * 0.14, s * 0.3, rng, 0.2, 10);
ctx.fill();
ctx.globalAlpha = 0.6;
ctx.fillStyle = lighten(main, 0.22);
blob(ctx, -s * 0.1, -s * 0.12, s * 0.22, rng, 0.2, 10);
ctx.fill();
ctx.globalAlpha = 1;
ctx.strokeStyle = withAlpha(t.ink, 0.45);
ctx.lineWidth = Math.max(1, s * 0.012);
ctx.beginPath();
ctx.moveTo(jitter(rng, s * 0.1), -s * 0.2);
ctx.lineTo(jitter(rng, s * 0.05), s * 0.0);
ctx.lineTo(s * 0.12, s * 0.18);
ctx.stroke();
ctx.restore();
blob(ctx, 0, s * 0.02, s * 0.34, makeRng(seed), 0.18, 12);
fillStroke(ctx, null, t.ink, LW(s));
ctx.fillStyle = mix(main, t.stoneDark, 0.3);
for (let i = 0; i < randInt(rng, 1, 3); i++) {
ngon(ctx, rand(rng, -s * 0.35, s * 0.35), s * 0.32, s * rand(rng, 0.04, 0.07), randInt(rng, 5, 6), rand(rng, 0, 1));
fillStroke(ctx, mix(main, t.stoneDark, 0.3), t.ink, Math.max(1, s * 0.012));
}
ctx.restore();
},
});
family({
id: 'nature.rock.mossy', name: 'Mossy Rocks', category: 'nature',
tags: ['rock', 'moss', 'cluster', 'stone', 'forest'], size: 64, variants: 6,
draw(ctx, { size, rng, theme, tint }) {
ctx.save();
const s = size, t = theme.sprite, main = tint || t.stoneDark;
groundShadow(ctx, 0, s * 0.3, s * 0.36, s * 0.08);
const rocks = [
{ x: 0, y: -s * 0.08, r: s * 0.22 },
{ x: -s * 0.16, y: s * 0.08, r: s * 0.2 },
{ x: s * 0.14, y: s * 0.04, r: s * 0.18 },
];
for (const rk of rocks) {
const sd = rseed(rng);
blob(ctx, rk.x, rk.y, rk.r, makeRng(sd), 0.2, 11);
fillStroke(ctx, mix(main, t.stone, rand(rng, 0, 0.4)), t.ink, LW(s));
ctx.save();
blob(ctx, rk.x, rk.y, rk.r, makeRng(sd), 0.2, 11);
ctx.clip();
ctx.fillStyle = withAlpha(t.leaf, 0.7);
blob(ctx, rk.x - rk.r * 0.2, rk.y - rk.r * 0.4, rk.r * 0.7, rng, 0.4, 9);
ctx.fill();
ctx.fillStyle = withAlpha(t.leafLight, 0.5);
blob(ctx, rk.x, rk.y - rk.r * 0.5, rk.r * 0.4, rng, 0.4, 8);
ctx.fill();
ctx.restore();
}
ctx.restore();
},
});
family({
id: 'nature.terrain.cliff', name: 'Cliff Edge', category: 'nature',
tags: ['cliff', 'edge', 'escarpment', 'rock', 'drop'], size: 72, variants: 6,
draw(ctx, { size, rng, theme, tint }) {
ctx.save();
const s = size, t = theme.sprite, main = tint || t.stone;
const seed = rseed(rng);
const sampler = () => {
const r = makeRng(seed);
const a = [];
for (let i = 0; i <= 10; i++) a.push(-s * 0.06 + (r() * 2 - 1) * s * 0.05);
return a;
};
const ys = sampler();
const xat = (i) => -s * 0.46 + i * (s * 0.92 / 10);
ctx.fillStyle = darken(theme.terrain.grass, 0.14);
roundRect(ctx, -s * 0.47, s * 0.06, s * 0.94, s * 0.42, s * 0.03);
ctx.fill();
ctx.beginPath();
ctx.moveTo(-s * 0.46, ys[0]);
for (let i = 1; i <= 10; i++) ctx.lineTo(xat(i), ys[i]);
ctx.lineTo(s * 0.46, s * 0.18);
ctx.lineTo(-s * 0.46, s * 0.18);
ctx.closePath();
fillStroke(ctx, main, t.ink, LW(s));
ctx.strokeStyle = darken(main, 0.22);
ctx.globalAlpha = 0.5;
ctx.lineWidth = Math.max(1, s * 0.012);
for (let k = 0; k < 12; k++) {
const x = -s * 0.42 + k * s * 0.078;
ctx.beginPath();
ctx.moveTo(x, 0);
ctx.lineTo(x + jitter(rng, s * 0.01), s * 0.16);
ctx.stroke();
}
ctx.globalAlpha = 1;
ctx.beginPath();
ctx.moveTo(-s * 0.46, -s * 0.46);
ctx.lineTo(s * 0.46, -s * 0.46);
ctx.lineTo(s * 0.46, ys[10]);
for (let i = 10; i >= 0; i--) ctx.lineTo(xat(i), ys[i]);
ctx.closePath();
fillStroke(ctx, theme.terrain.grass, t.ink, LW(s));
ctx.strokeStyle = darken(theme.terrain.grass, 0.2);
ctx.lineWidth = Math.max(1, s * 0.01);
for (let i = 0; i <= 10; i++) {
const x = xat(i);
ctx.beginPath();
ctx.moveTo(x, ys[i]);
ctx.lineTo(x + jitter(rng, s * 0.01), ys[i] - s * 0.03);
ctx.stroke();
}
ctx.restore();
},
});
family({
id: 'nature.terrain.hills', name: 'Rolling Hills', category: 'nature',
tags: ['hills', 'grass', 'rolling', 'meadow', 'landscape'], size: 88, variants: 6,
draw(ctx, { size, rng, theme, tint }) {
ctx.save();
const s = size, t = theme.sprite, main = tint || theme.terrain.grass;
groundShadow(ctx, 0, s * 0.44, s * 0.46, s * 0.04);
const shades = [lighten(main, 0.14), main, darken(main, 0.1)];
for (let L = 0; L < 3; L++) {
const baseY = -s * 0.04 + L * s * 0.14;
ctx.beginPath();
ctx.moveTo(-s * 0.5, s * 0.5);
ctx.lineTo(-s * 0.5, baseY);
const bumps = randInt(rng, 2, 4);
const seg = s / bumps;
let x = -s * 0.5;
for (let b = 0; b < bumps; b++) {
const cx = x + seg / 2;
const cy = baseY - rand(rng, s * 0.06, s * 0.14);
ctx.quadraticCurveTo(cx, cy, x + seg, baseY + jitter(rng, s * 0.02));
x += seg;
}
ctx.lineTo(s * 0.5, s * 0.5);