tool
extends Spatial
class_name Island

export var generate: bool = false setget do_generate
export var level_size: int = 10

signal island_tile_selected
signal island_tile_hover

var tiles_by_offset = {}

func reset():
	var tiles = $Tiles
	
	for node in tiles.get_children():
		tiles.remove_child(node)
		node.queue_free()
	
	tiles_by_offset = {}


func create_tile_for_hex(hex):
	var hexgrid = preload("res://addons/gdhexgrid/HexGrid.gd").new()
	var HexTile3D = preload("res://scenes/HexTile3D.tscn")
	
	var tile = HexTile3D.instance()
	var pos = hexgrid.get_hex_center_from_offset(hex.offset_coords)	
	var hex_pos = hexgrid.get_hex_center_from_offset(hex.offset_coords)
	var height = 0.0
	
	tile.transform.origin = Vector3(pos.x, height, pos.y)
	tile.connect("tile_selected", self, "on_tile_selected")
	tile.connect("tile_mouse_entered", self, "on_tile_hover")
	
	return tile

func generate_random_walk (length):
	var hexgrid = preload("res://addons/gdhexgrid/HexGrid.gd").new()
	var HexTile3D = preload("res://scenes/HexTile3D.tscn")
	var tiles = $Tiles
	
	var cur_hex_coord = Vector2(0,0)
	var i = length
	while (i >= 0):
		var current_hex = hexgrid.get_hex_from_offset(cur_hex_coord)
		var tile = create_tile_for_hex(current_hex)
		tiles.add_child(tile)
		tiles_by_offset[cur_hex_coord] = tile
		
#		var pos = hexgrid.get_hex_center_from_offset(cur_hex_coord)
#		var tile = HexTile3D.instance()
#		var height = 0.0
#		tile.transform.origin = Vector3(pos.x, height, pos.y)
#		tile.connect("tile_selected", self, "on_tile_selected")
#		tile.connect("tile_mouse_entered", self, "on_tile_hover")
#		tiles.add_child(tile)
#
#		var current_hex_from_axial = hexgrid.get_hex_at(current_hex.axial_coords)
#
		var neighbours = current_hex.get_all_adjacent()
		cur_hex_coord = neighbours[randi() %6].offset_coords
#		for neighbour in neighbours:
#			tile = create_tile_for_hex(neighbour)
#			tiles.add_child(tile)
#		var rand_idx = randi() % 6
#		cur_hex_coord = neighbours[rand_idx].offset_coords
		i = i - 1


func extrude_island():
	var hexgrid = preload("res://addons/gdhexgrid/HexGrid.gd").new()
	var tiles = $Tiles	
	
	var old_tiles = tiles
	tiles = {}
	
	var old_tiles_by_offset = tiles_by_offset

#	for offset_coord in tiles_by_offset.keys():
#		var hex = hexgrid.get_hex_from_offset(offset_coord)
#		var neighbours = current_hex.get_all_adjacent()
#		cur_hex_coord = neighbours[randi() %6].offset_coords
#
#

#
#	for tile in old_tiles:
#		var hex_coord = Globals.WorldToHex(tile)
#		tiles[tile] = "Sand"
#		var neighbours = Globals.HexGrid.get_hex_at(hex_coord).get_all_adjacent()
#		for cell in neighbours:
#			var world_coord = Globals.HexToWorld(hex_coord + cell.axial_coords)
#			tiles[world_coord] = "Sand"
#
#
#func mark_grass():
#	var old_tiles = tiles
#	tiles = {}
#
#	for tile in old_tiles:
#		var hex_coord = Globals.WorldToHex(tile)
#
#		var neighbours = Globals.HexGrid.get_hex_at(hex_coord).get_all_adjacent()
#		var is_center_cell = true
#		for cell in neighbours:
#			var world_coord = Globals.HexToWorld(hex_coord + cell.axial_coords)
#			if not world_coord in old_tiles.keys():
#				is_center_cell = false
#
#		if is_center_cell:
#			tiles[tile] = "Grass"
#		else:
#			tiles[tile] = "Sand"
#
#
#
#func mark_deep_grass():
#	var old_tiles = tiles
#	tiles = {}
#
#	for tile in old_tiles:
#		if old_tiles[tile] != "Grass":
#			tiles[tile] = old_tiles[tile]
#			continue
#
#		var hex_coord = Globals.WorldToHex(tile)
#
#		var neighbours = Globals.HexGrid.get_hex_at(hex_coord).get_all_adjacent()
#		var is_center_cell = true
#		for cell in neighbours:
#			var world_coord = Globals.HexToWorld(hex_coord + cell.axial_coords)
#			if world_coord in old_tiles.keys() and old_tiles[world_coord] != "Grass":
#				is_center_cell = false
#				break
#
#		if is_center_cell:
#			tiles[tile] = "DeepGrass"
#		else:
#			tiles[tile] = "Grass"

func generate():
	var hexgrid = preload("res://addons/gdhexgrid/HexGrid.gd").new()
	var HexTile3D = preload("res://scenes/HexTile3D.tscn")
	var tiles = $Tiles
	
	reset()
	generate_random_walk(level_size)
#	extrude_island()
#	mark_grass()
#	mark_deep_grass()
#
	
#	for i in range(-level_size / 2, level_size / 2):
#		for j in range (-level_size / 2, level_size / 2):
#			var pos = hexgrid.get_hex_center_from_offset(Vector2(i, j))
#			var tile = HexTile3D.instance()
#			var height = (sin(pos.y * 0.3) * sin(pos.y * 0.8) * 0.8 + cos ((pos.x) * 0.9) * 1.24) * 0.5 + 0.4 + rand_range(-0.3, 0.3)
#			tile.transform.origin = Vector3(pos.x, height, pos.y)
#			tile.connect("tile_selected", self, "on_tile_selected")
#			tile.connect("tile_mouse_entered", self, "on_tile_hover")
#			tiles.add_child(tile)	

	print ("Generated island with " + str(tiles.get_child_count()) + " nodes")


func do_generate(flag: bool):
	print ("Generating Level")
	generate()


func on_tile_selected(tile):
	emit_signal("island_tile_selected", self, tile)


func on_tile_hover(tile):
	emit_signal("island_tile_hover", self, tile)