50 lines
1.1 KiB
Lua
50 lines
1.1 KiB
Lua
blockgame.vector = blockgame.vector or {}
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local api = blockgame.vector
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-- TODO: replace direct sharing of api variables such as `sides` with functions that return them, to prevent other mods from mutating the shared data.
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api.horizontal_directions = {
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west = vector.new(-1, 0, 0),
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east = vector.new(1, 0, 0),
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south = vector.new(0, 0, -1),
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north = vector.new(0, 0, 1),
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}
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api.sides = api.horizontal_directions
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api.directions = {
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west = vector.new(-1, 0, 0),
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east = vector.new(1, 0, 0),
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down = vector.new(0, -1, 0),
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up = vector.new(0, 1, 0),
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south = vector.new(0, 0, -1),
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north = vector.new(0, 0, 1),
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}
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api.dirs = api.directions
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function api.random_dir ()
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return blockgame.random_element(api.dirs)
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end
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function api.random_side ()
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return blockgame.random_element(api.sides)
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end
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function api.get_below (pos)
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return pos + api.dirs.down
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end
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function api.get_neighbors (pos, neighborhood)
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neighborhood = neighborhood or blockgame.vector.dirs
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local neighbors = {}
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for _, dir in pairs(neighborhood) do
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table.insert(neighbors, pos + dir)
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end
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return neighbors
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end
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function api.get_sides_of (pos)
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return api.get_neighbors(pos, api.sides)
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end
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