extends Node2D


# Declare member variables here. Examples:
# var a = 2
# var b = "text"

var GridLevel

var highlight_hex_coord = Vector2(0,0)

onready var camera = get_node("Camera2D")
onready var ui = get_node("Camera2D/UI")
onready var ScreenCoords = get_node("Camera2D/UI/ScreenCoords")
onready var HexCoords = get_node("Camera2D/UI/HexCoords")
onready var WorldCoords = get_node("Camera2D/UI/WorldCoords")
onready var TileType = get_node("Camera2D/UI/TileType")


# Called when the node enters the scene tree for the first time.
func _ready():
	GridLevel = get_node("GridLevel")
	TileType.add_item("None", 0)
	TileType.add_item("Sand", 1)
	TileType.add_item("Grass", 2)
	update()

func _process(_delta):
	var view_size = OS.get_window_safe_area().size
	ui.rect_position = -view_size * 0.5
	update()

func _unhandled_input(event):
	if 'position' in event:
		ScreenCoords.text = str(event.position)
		var world_coords = camera.ScreenToWorld(event.position)
		WorldCoords.text = str(world_coords)
		var hex_coords = GridLevel.WorldToTileCoords(world_coords)

		HexCoords.text = str(hex_coords)
		highlight_hex_coord = GridLevel.GetHexCenter(hex_coords)
		
		if event is InputEventMouseButton:
			if event.button_index == BUTTON_LEFT and event.pressed:
				GridLevel.SetTile (hex_coords.x, hex_coords.y, TileType.selected)
			if event.button_index == BUTTON_WHEEL_DOWN and event.pressed:
				camera.zoom = camera.zoom * 1.0 / 0.8
			if event.button_index == BUTTON_WHEEL_UP and event.pressed:
				camera.zoom = camera.zoom * 0.8

		if event is InputEventMouseButton and Input.is_mouse_button_pressed(BUTTON_MIDDLE):
			camera.transform.origin = world_coords

		update()
		
	
func _draw():
	draw_set_transform(highlight_hex_coord, 0, Vector2.ONE)
	draw_polyline(GridLevel.HexPoints, "#ff0000", 4)