extends Spatial

onready var hexgrid = preload("res://addons/gdhexgrid/HexGrid.gd").new()
onready var HexTile3D = preload("res://scenes/HexTile3D.tscn")
onready var tiles = $Tiles
onready var fps_label = $CanvasLayer/HBoxContainer/FPSLabel
onready var player_pos_label = $CanvasLayer/HBoxContainer/PlayerPos
onready var tile_pos_label = $CanvasLayer/HBoxContainer/TilePos
onready var player = $Player

var player_velocity = Vector3.ZERO
var player_speed = 5
var target_coordinate = Vector3.ZERO
var target_tile = null
var current_tile = null

func _ready():
	print (hexgrid)
	
	var num_tiles_x = 50
	var num_tiles_z = 50
	
	for i in range(-num_tiles_x / 2, num_tiles_x / 2):
		for j in range (-num_tiles_z / 2, num_tiles_z / 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)	

	var pos = hexgrid.get_hex_center3(Vector3(0, 0, 0))
	print (pos)
		
	var hex = hexgrid.get_hex_at(pos)
	print (hex)
	
	pass


func _process(delta):
	fps_label.text = "FPS: " + str(Performance.get_monitor(Performance.TIME_FPS))
	player_pos_label.text = "Pos: " + str(player.transform.origin)


func _physics_process(delta):
	var position_error = target_coordinate - player.transform.origin
	var error_length = position_error.length()
	
	if error_length > 0.1:
		player_velocity = position_error / error_length * player_speed
	else:
		player_velocity = Vector3.ZERO
		
	player.transform.origin += player_velocity * delta


func on_tile_selected(tile):
	target_tile = tile
	target_coordinate = Vector3(tile.transform.origin.x, tile.transform.origin.y, tile.transform.origin.z)
	var position_error = target_coordinate - player.transform.origin
	print ("clicked on tile " + str(tile.transform.origin) + " error: " + str(position_error))


func on_tile_hover(tile):
	current_tile = tile
	tile_pos_label.text = "Tile: " + str(current_tile.transform.origin)