21 lines
943 B
JavaScript
21 lines
943 B
JavaScript
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export function derivePatchSeed(worldSeed, terrainType, variant) {
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let hash = (worldSeed >>> 0) ^ 0x9e3779b9;
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hash = Math.imul(hash ^ (variant >>> 0), 668265263) >>> 0;
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for (const char of String(terrainType || "auto")) hash = Math.imul(hash ^ char.charCodeAt(0), 16777619) >>> 0;
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return hash >>> 0;
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}
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export function buildMaximumProductionLasso(world, width = 470, height = 333) {
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const x0 = Math.max(0, Math.min(world.width - width, world.originX + 238));
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const y0 = Math.max(0, Math.min(world.height - height, world.originY));
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const rect = { x0, y0, x1: x0 + width, y1: y0 + height, kind: "lasso" };
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const insetX = Math.max(4, Math.floor(width * 0.16));
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const insetY = Math.max(4, Math.floor(height * 0.16));
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rect.polygon = [
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{ x: rect.x0 + insetX, y: rect.y0 },
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{ x: rect.x1 - 1, y: rect.y0 + insetY },
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{ x: rect.x1 - insetX, y: rect.y1 - 1 },
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{ x: rect.x0, y: rect.y1 - insetY },
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];
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return rect;
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}
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