extends GridMap

@onready var camera = $Camera3D

@onready var entities = []

const Entity3D = preload("res://scenes/Instance.tscn")

func _ready():
	setFloor()
	setEntities()

func setFloor():
	clear()
	for mz in range(0, Global.world.width - 1):
		for mx in range(0, Global.world.height - 1):
			var bloc = Global.world.get_bloc(Vector2(mx, mz))
			var my: float = bloc.y
			var meshID 
			var mesh_rotation 
			if bloc.type != 0:
				var neighbours = Global.world.get_neighbours_4_at_same_height(Vector2(mx, mz))
				if neighbours == Global.directions_4.RIGHT:
					meshID = Global.bloc_sides_id.SIDE_3
					mesh_rotation = Global.GRID_ROTATION[3]
				elif neighbours == Global.directions_4.LEFT:
					meshID = Global.bloc_sides_id.SIDE_3
					mesh_rotation = Global.GRID_ROTATION[1]
				elif neighbours == Global.directions_4.LEFT + Global.directions_4.RIGHT:
					meshID = Global.bloc_sides_id.SIDE_2_OPPOSITE
					mesh_rotation = Global.GRID_ROTATION[0]
				elif neighbours == Global.directions_4.BOTTOM:
					meshID = Global.bloc_sides_id.SIDE_3
					mesh_rotation = Global.GRID_ROTATION[0]
				elif neighbours == Global.directions_4.BOTTOM + Global.directions_4.RIGHT:
					meshID = Global.bloc_sides_id.SIDE_2_ANGLE
					mesh_rotation = Global.GRID_ROTATION[3]
				elif neighbours == Global.directions_4.BOTTOM + Global.directions_4.LEFT:
					meshID = Global.bloc_sides_id.SIDE_2_ANGLE
					mesh_rotation = Global.GRID_ROTATION[0]
				elif neighbours == Global.directions_4.BOTTOM + Global.directions_4.LEFT + Global.directions_4.RIGHT:
					meshID = Global.bloc_sides_id.SIDE_1
					mesh_rotation = Global.GRID_ROTATION[0]
				elif neighbours == Global.directions_4.TOP:
					meshID = Global.bloc_sides_id.SIDE_3
					mesh_rotation = Global.GRID_ROTATION[2]
				elif neighbours == Global.directions_4.TOP + Global.directions_4.RIGHT:
					meshID = Global.bloc_sides_id.SIDE_2_ANGLE
					mesh_rotation = Global.GRID_ROTATION[2]
				elif neighbours == Global.directions_4.TOP + Global.directions_4.LEFT:
					meshID = Global.bloc_sides_id.SIDE_2_ANGLE
					mesh_rotation = Global.GRID_ROTATION[1]
				elif neighbours == Global.directions_4.TOP + Global.directions_4.LEFT + Global.directions_4.RIGHT:
					meshID = Global.bloc_sides_id.SIDE_1
					mesh_rotation = Global.GRID_ROTATION[2]
				elif neighbours == Global.directions_4.TOP + Global.directions_4.BOTTOM:
					meshID = Global.bloc_sides_id.SIDE_2_OPPOSITE
					mesh_rotation = Global.GRID_ROTATION[1]
				elif neighbours == Global.directions_4.TOP + Global.directions_4.BOTTOM + Global.directions_4.RIGHT:
					meshID = Global.bloc_sides_id.SIDE_1
					mesh_rotation = Global.GRID_ROTATION[3]
				elif neighbours == Global.directions_4.TOP + Global.directions_4.BOTTOM + Global.directions_4.LEFT:
					meshID = Global.bloc_sides_id.SIDE_1
					mesh_rotation = Global.GRID_ROTATION[1]
				elif neighbours == Global.directions_4.TOP + Global.directions_4.BOTTOM + Global.directions_4.LEFT + Global.directions_4.RIGHT:
					meshID = Global.bloc_sides_id.SIDE_0
					mesh_rotation = Global.GRID_ROTATION[0]
				elif neighbours == 0:
					meshID = Global.bloc_sides_id.SIDE_4
					mesh_rotation = Global.GRID_ROTATION[0]

				set_cell_item( Vector3(mx, my, mz) , meshID, mesh_rotation)

func setEntities():
	for entity in Global.world.entities:
		var entity_instance = Entity3D.instantiate()
		entity_instance.id = entities.size()
		entity_instance.position = map_to_local(Vector3(entity.position.x, entity.position.y, entity.position.z))
		entity_instance.connect_to_world(entity_instance.id)
		entities.append(entity_instance)
		add_child(entity_instance)

# TEST À ENLEVER
var inputs = {"ui_right": Vector2.RIGHT,
			"ui_left": Vector2.LEFT,
			"ui_up": Vector2.UP,
			"ui_down": Vector2.DOWN}
			
func _unhandled_input(event):
	for dir in inputs.keys():
		if event.is_action_pressed(dir):
			var new_position = Global.world.entities[23].position2D + inputs[dir]
#			var new_position3d = map_to_local(Vector3(new_position.x, 0, new_position.y))
#			var new_position2d = Vector2(new_position3d.x, new_position3d.z)
			Global.world.entities[23].move(new_position)
		if event is InputEventMouseMotion:
			var position = get_mouse_position()
	#		print(position)
			print(Global.world.get_bloc(Vector2i(position.x, position.z)))
			var sprite_position = Vector3(round(position.x), ceil(position.y), round(position.z)) + Vector3(0, 0.01, 0)
	#		print(sprite_position)
			$Sprite3D.position = sprite_position
#	if event.is_action_pressed("alt_command"):
		
# FIN TEST À ENLEVER

func get_mouse_position():
	var mouse_pos = get_viewport().get_mouse_position()
	var ray_length = 1000
	var from = camera.project_ray_origin(mouse_pos)
	var to = from + camera.project_ray_normal(mouse_pos) * ray_length
	var space = get_world_3d().direct_space_state
	var ray_query = PhysicsRayQueryParameters3D.new()
	ray_query.from = from
	ray_query.to = to
	ray_query.collide_with_areas = true
	var raycast_result = space.intersect_ray(ray_query)
	var position = Vector3()
	if raycast_result:
		position = get_used_cells()[raycast_result.shape]

	return position