# This library works with the idea that you have a world array you want projected onto a screen array.>>>importnumpyasnp>>>importtcod.camera>>>screen=np.arange(3*3, dtype=int).reshape(3, 3) >>>world=np.arange(9*10, dtype=int).reshape(9, 10) >>>screenarray([[0, 1, 2], [3, 4, 5], [6, 7, 8]]) >>>worldarray([[ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9], [10, 11, 12, 13, 14, 15, 16, 17, 18, 19], [20, 21, 22, 23, 24, 25, 26, 27, 28, 29], [30, 31, 32, 33, 34, 35, 36, 37, 38, 39], [40, 41, 42, 43, 44, 45, 46, 47, 48, 49], [50, 51, 52, 53, 54, 55, 56, 57, 58, 59], [60, 61, 62, 63, 64, 65, 66, 67, 68, 69], [70, 71, 72, 73, 74, 75, 76, 77, 78, 79], [80, 81, 82, 83, 84, 85, 86, 87, 88, 89]]) # This example uses `ij` coordinates, but `xy` coordinates are also an option.# The most basic example is to get the camera and use it to project the world and screen shapes.>>>camera_ij=tcod.camera.get_camera(screen.shape, center=(2, 2)) # Get the camera position centered on (2, 2).>>>camera_ij# The actual camera position is always which world position to project onto screen[0, 0]. (1, 1) >>>screen_slice, world_slice=tcod.camera.get_slices(screen.shape, world.shape, camera_ij) >>>screen_slice (slice(0, 3, None), slice(0, 3, None)) >>>world_slice (slice(1, 4, None), slice(1, 4, None)) >>>screen[screen_slice] =world[world_slice] # Project the values of screen onto the world.>>>screenarray([[11, 12, 13], [21, 22, 23], [31, 32, 33]]) # Out-of-bounds camera coordinates result in partial views.# Fully out-of-bounds cameras will result in zero element views.>>>camera_ij=tcod.camera.get_camera(screen.shape, (4, 10)) # A camera position beyond the right side of the world.>>>screen_slice, world_slice=tcod.camera.get_slices(screen.shape, world.shape, camera_ij) >>>screen[screen_slice].shape# Because this is partially out-of-bounds not all of the screen is in view. (3, 1) >>>screen_slice (slice(0, 3, None), slice(0, 1, None)) >>>world_slice (slice(3, 6, None), slice(9, 10, None)) >>>screen[:] =-1# The screen will be cleared with -1, this value now means out-of-bounds.>>>screen[screen_slice] =world[world_slice] # The parts which do overlap will be projected.>>>screenarray([[39, -1, -1], [49, -1, -1], [59, -1, -1]]) # By adding the shape of the world to camera functions the camera can be clamped to the bounds of the world.# All screen indexes will be in-view as long as the screen is never larger than the world.>>>camera_ij=tcod.camera.clamp_camera(screen.shape, world.shape, camera_ij) >>>screen_slice, world_slice=tcod.camera.get_slices(screen.shape, world.shape, camera_ij) >>>screen[screen_slice] =world[world_slice] >>>screen# The camera was moved left to fit the screen to the world.array([[37, 38, 39], [47, 48, 49], [57, 58, 59]]) # If the world is divided into chunks then this library can be used to project each chunk onto a single screen.# You'll have to manage your own chunks. Possibly in a `dict[tuple[int, int], NDArray[Any]]`-like container.>>>screen=np.zeros((10, 10), dtype=int) >>>CHUNK_SIZE= (4, 4) >>>forscreen_slice, chunk_ij, chunk_sliceintcod.camera.get_chunked_slices(screen.shape, CHUNK_SIZE, camera=(0, 0)): ... screen[screen_slice] =chunk_ij[0] +chunk_ij[1] *10 ... print(f"{screen_slice=}, {chunk_ij=}, {chunk_slice=}") screen_slice=(slice(0, 4, None), slice(0, 4, None)), chunk_ij=(0, 0), chunk_slice=(slice(0, 4, None), slice(0, 4, None)) screen_slice=(slice(0, 4, None), slice(4, 8, None)), chunk_ij=(0, 1), chunk_slice=(slice(0, 4, None), slice(0, 4, None)) screen_slice=(slice(0, 4, None), slice(8, 10, None)), chunk_ij=(0, 2), chunk_slice=(slice(0, 4, None), slice(0, 2, None)) screen_slice=(slice(4, 8, None), slice(0, 4, None)), chunk_ij=(1, 0), chunk_slice=(slice(0, 4, None), slice(0, 4, None)) screen_slice=(slice(4, 8, None), slice(4, 8, None)), chunk_ij=(1, 1), chunk_slice=(slice(0, 4, None), slice(0, 4, None)) screen_slice=(slice(4, 8, None), slice(8, 10, None)), chunk_ij=(1, 2), chunk_slice=(slice(0, 4, None), slice(0, 2, None)) screen_slice=(slice(8, 10, None), slice(0, 4, None)), chunk_ij=(2, 0), chunk_slice=(slice(0, 2, None), slice(0, 4, None)) screen_slice=(slice(8, 10, None), slice(4, 8, None)), chunk_ij=(2, 1), chunk_slice=(slice(0, 2, None), slice(0, 4, None)) screen_slice=(slice(8, 10, None), slice(8, 10, None)), chunk_ij=(2, 2), chunk_slice=(slice(0, 2, None), slice(0, 2, None)) >>>screenarray([[ 0, 0, 0, 0, 10, 10, 10, 10, 20, 20], [ 0, 0, 0, 0, 10, 10, 10, 10, 20, 20], [ 0, 0, 0, 0, 10, 10, 10, 10, 20, 20], [ 0, 0, 0, 0, 10, 10, 10, 10, 20, 20], [ 1, 1, 1, 1, 11, 11, 11, 11, 21, 21], [ 1, 1, 1, 1, 11, 11, 11, 11, 21, 21], [ 1, 1, 1, 1, 11, 11, 11, 11, 21, 21], [ 1, 1, 1, 1, 11, 11, 11, 11, 21, 21], [ 2, 2, 2, 2, 12, 12, 12, 12, 22, 22], [ 2, 2, 2, 2, 12, 12, 12, 12, 22, 22]])