notSpore/langtons-ant/ant.gd

77 lines
2.3 KiB
GDScript

extends Sprite2D
var pos: Vector2i = Vector2i(0,0)
var dir: TileSet.CellNeighbor = TileSet.CELL_NEIGHBOR_RIGHT_SIDE
@onready var tiles: TileMapLayer = get_node("../TileMapLayer")
var next_dir: Dictionary = {
0: TileSet.CELL_NEIGHBOR_RIGHT_SIDE,
1: TileSet.CELL_NEIGHBOR_BOTTOM_RIGHT_SIDE,
2: TileSet.CELL_NEIGHBOR_BOTTOM_LEFT_SIDE,
3: TileSet.CELL_NEIGHBOR_LEFT_SIDE,
4: TileSet.CELL_NEIGHBOR_TOP_LEFT_SIDE,
5: TileSet.CELL_NEIGHBOR_TOP_RIGHT_SIDE,
}
var cur_int: Dictionary = {
TileSet.CELL_NEIGHBOR_RIGHT_SIDE: 0,
TileSet.CELL_NEIGHBOR_BOTTOM_RIGHT_SIDE: 1,
TileSet.CELL_NEIGHBOR_BOTTOM_LEFT_SIDE: 2,
TileSet.CELL_NEIGHBOR_LEFT_SIDE: 3,
TileSet.CELL_NEIGHBOR_TOP_LEFT_SIDE: 4,
TileSet.CELL_NEIGHBOR_TOP_RIGHT_SIDE: 5,
}
func _ready() -> void:
self.set_z_index(1)
self.set_frame(cur_int[dir])
tiles.set_tile(pos, (tiles.get_tile_colour(pos))) # TODO: should probably use another dictionary
move()
func update() -> void:
var tile: int = tiles.get_tile_colour(pos)
var newFrame: int = cur_int[dir]
# TODO: turn into dict{tileCol, (nextDir, paintCol)} customizable
match tile:
0:
newFrame = (newFrame + 5) % tiles.numTiles
1:
newFrame = (newFrame + 4) % tiles.numTiles
2:
newFrame = (newFrame + 0) % tiles.numTiles
3:
newFrame = (newFrame + 0) % tiles.numTiles
4:
newFrame = (newFrame + 5) % tiles.numTiles
5:
newFrame = (newFrame + 4) % tiles.numTiles
_:
pass
dir = next_dir[newFrame]
move()
pos = tiles.get_neighbor_cell(pos, dir)
tile = tiles.get_tile_colour(pos)
tiles.set_tile(pos, (tile + 1) % tiles.numTiles) # TODO: should probably use another dictionary
self.set_frame(newFrame)
func move() -> void:
var delta: Vector2
match dir:
TileSet.CELL_NEIGHBOR_RIGHT_SIDE:
delta = Vector2(tiles.texSize.x, 0)
TileSet.CELL_NEIGHBOR_BOTTOM_RIGHT_SIDE:
delta = Vector2(tiles.texSize.x/2, tiles.texSize.y/4*3)
TileSet.CELL_NEIGHBOR_BOTTOM_LEFT_SIDE:
delta = Vector2(-tiles.texSize.x/2, tiles.texSize.y/4*3)
TileSet.CELL_NEIGHBOR_LEFT_SIDE:
delta = Vector2(-tiles.texSize.x, 0)
TileSet.CELL_NEIGHBOR_TOP_LEFT_SIDE:
delta = Vector2(-tiles.texSize.x/2, -tiles.texSize.y/4*3)
TileSet.CELL_NEIGHBOR_TOP_RIGHT_SIDE:
delta = Vector2(tiles.texSize.x/2, -tiles.texSize.y/4*3)
_:
delta = Vector2(0,0)
self.translate(delta)