class_name CombatMap
extends Node2D

signal tile_hovered(coords: Vector2i)

@export var tile_set: DLTileset
@onready var tile_map: TileMapLayer = %TerrainLayer
@onready var highlight_map: GridOverlay = %OverlayLayer

const TILE_SIZE := 48.0
const SOURCE_ID: int = 0


func snap_to_grid(pos: Vector2) -> Vector2:
	return Vector2(floorf(pos.x / TILE_SIZE), floorf(pos.y / TILE_SIZE)) * TILE_SIZE


func world_to_coords(pos: Vector2) -> Vector2i:
	return Vector2i(snap_to_grid(pos) / TILE_SIZE)


func coords_to_world(coords: Vector2i) -> Vector2:
	return Vector2(coords) * TILE_SIZE

func draw_wall(coords: Vector2i) -> void:
	draw_custom(coords, tile_set.wall_tile_coords)

func draw_floor(coords: Vector2i) -> void:
	draw_custom(coords, tile_set.floor_tile_coords)
	
func draw_custom(coords: Vector2i, tile_coords: Vector2i) -> void:
	tile_map.set_cell(coords, SOURCE_ID, tile_coords)

func is_wall(coords: Vector2i) -> bool:
	return tile_map.get_cell_atlas_coords(coords) == tile_set.wall_tile_coords
	
func target_tile(coords: Vector2i) -> void:
	highlight_map.target_tile(coords)
	tile_hovered.emit(coords)