Grid

The grid class stores a matrix of values.

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grid.new()

or

grid()

Returns a new grid object.

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grid:set(x,y,v)

Sets a value for the given grid coordinates. The coordinates must be integers.

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grid:get(x,y)

Returns the value associated with the given coordinates.

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grid:clear()

Clears the grid of all values.

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grid:rectangle(x,y,x2,y2[,skipNil])

Returns an iterator. The iterator function iterates over all coordinates in the rectangle and returns x,y,v. If skipNil is true, then the iterator will skip all nil values.

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grid:iterate()

Returns an iterator. The iterator function iterates through all non-nil values in the grid and returns x,y,v.

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grid:map(func)

Iterates through all coordinates and call func to set new values such that newv = func(x,y,v).

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grid(x,y)

Shortcut for grid:get