randomgeon/utility/CoordUtility.gd
Dan Baker 214e0aa5e0 Many changes
Handle it
2025-05-04 09:30:14 +01:00

98 lines
No EOL
3 KiB
GDScript

extends Node
func _ready() -> void:
Log.pr("CoordUtility ready")
func all_cells(start: Vector2i, end: Vector2i) -> Array:
# Returns all cells between start and end
var cells = []
for y in range(start.y, end.y + 1):
for x in range(start.x, end.x + 1):
cells.append(Vector2i(x, y))
cells.sort()
return cells
## Return all the perimeter cells between vector2i points
func perimeter_cells(start: Vector2i, end: Vector2i, inclusive: bool = true, width: int = 1) -> Array[Vector2i]:
# Returns cells on the perimeter between start and end
# inclusive: if true, includes the area cells, if false, excludes them
# width: the thickness of the perimeter (default: 1)
var cells: Array[Vector2i] = []
var min_x: int = min(start.x, end.x)
var max_x: int = max(start.x, end.x)
var min_y: int = min(start.y, end.y)
var max_y: int = max(start.y, end.y)
# Calculate the inner and outer bounds based on inclusive flag and width
var inner_min_x: int
var inner_min_y: int
var inner_max_x: int
var inner_max_y: int
var outer_min_x: int
var outer_min_y: int
var outer_max_x: int
var outer_max_y: int
if inclusive:
Log.pr("Drawing within bounds of the original rectangle")
# For inclusive, inner bounds are the original rectangle
inner_min_x = min_x
inner_min_y = min_y
inner_max_x = max_x
inner_max_y = max_y
# Outer bounds expand by width-1 in each direction
outer_min_x = min_x - (width - 1)
outer_min_y = min_y - (width - 1)
outer_max_x = max_x + (width - 1)
outer_max_y = max_y + (width - 1)
else:
Log.pr("Drawing outside bounds of the original rectangle")
# For exclusive, inner bounds are the original rectangle
inner_min_x = min_x
inner_min_y = min_y
inner_max_x = max_x
inner_max_y = max_y
# For exclusive, outer bounds expand by exact width
outer_min_x = min_x - width
outer_min_y = min_y - width
outer_max_x = max_x + width
outer_max_y = max_y + width
# Add all cells in the outer rectangle
for x in range(outer_min_x, outer_max_x + 1):
for y in range(outer_min_y, outer_max_y + 1):
var pos: Vector2i = Vector2i(x, y)
# For inclusive, include cells on or outside inner bounds
# For exclusive, only include cells that are outside inner bounds
if inclusive:
if x <= inner_min_x or x >= inner_max_x or y <= inner_min_y or y >= inner_max_y:
cells.append(pos)
else:
if x < inner_min_x or x > inner_max_x or y < inner_min_y or y > inner_max_y:
cells.append(pos)
return cells
func get_surrounding_tiles(given_tile: Vector2i, spread: int = 1) -> Array[Vector2i]:
Log.pr("Getting surrounding tiles for tile: ", given_tile, " with spread: ", spread)
var surrounding_tiles: Array[Vector2i] = []
# Loop from -spread to +spread in both directions
for y in range(-spread, spread + 1):
for x in range(-spread, spread + 1):
# Skip the center tile if you don't want it included
if x == 0 and y == 0:
continue
var target_tile = given_tile + Vector2i(x, y)
surrounding_tiles.append(target_tile)
Log.pr("Surrounding tiles: ", surrounding_tiles)
return surrounding_tiles