d76b27673a
Not yet built or run (verify job at the end). Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
43 lines
2.1 KiB
C#
43 lines
2.1 KiB
C#
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
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using System.Collections.Generic;
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using System.Linq;
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using CultMath;
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// A hardpoint's schematic footprint: its Shape laid over the hull's cells at its Position, in hull orientation.
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// The footprint is authored for gameplay and never derived from the model or the Blender add-on
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// (schematic-and-model-are-separate-spaces). This is the one reading of footprint cells in hull space and the one
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// edit rule, so any host (the Studio drawer now, a Thing host later) edits footprints the same way.
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public static class HullFootprint
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{
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public static IEnumerable<int2> Cells(HardpointData hardpoint) =>
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hardpoint.Shape.Coordinates.Select(c => c + hardpoint.Position);
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// Toggles one hull cell of the footprint at `position`. A cell outside the footprint grows it toward any edge;
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// a cell inside is removed and empty border rows and columns are trimmed; every other cell keeps its hull
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// coordinate. Removing the last cell is refused (false, outputs are the inputs' values). Builds a new Shape and
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// never edits the one it is given.
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public static bool Toggle(Shape footprint, int2 position, int2 hullCell, out Shape shape, out int2 newPosition)
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{
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var cells = Cells(footprint, position);
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if (!cells.Remove(hullCell)) cells.Add(hullCell);
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else if (cells.Count == 0)
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{
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shape = footprint;
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newPosition = position;
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return false;
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}
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var min = cells.Aggregate((a, b) => new int2(math.min(a.x, b.x), math.min(a.y, b.y)));
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var max = cells.Aggregate((a, b) => new int2(math.max(a.x, b.x), math.max(a.y, b.y)));
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shape = new Shape(max.x - min.x + 1, max.y - min.y + 1);
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foreach (var cell in cells) shape[cell - min] = true;
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newPosition = min;
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return true;
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}
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private static HashSet<int2> Cells(Shape footprint, int2 position) =>
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new HashSet<int2>(footprint.Coordinates.Select(c => c + position));
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}
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