extends Node2D

var pal_shader_mat := preload('res://palette_mat.tres')
var worldmap_shader_mat := preload('res://worldmap_palette_mat.tres')

var map_images := []
var map_textures := []
var map_texrects := []

func _create_palette_and_atlas_texrects() -> void:
	for tileset in 3:
		# Debug the Atlases
		var texrect = TextureRect.new()
		texrect.rect_position.x = tileset * 256 * 2
		texrect.rect_scale *= 16
		texrect.texture = SpriteLoader.worldmap_palette_textures[tileset]
		map_texrects.append(texrect)
		add_child(texrect)
		texrect = TextureRect.new()
		texrect.rect_position.x = tileset * 256 * 2
		texrect.rect_position.y = 256
		texrect.rect_scale *= 4
		texrect.texture = SpriteLoader.worldmap_tile_atlas_textures[tileset]
		texrect.material = pal_shader_mat.duplicate()
		texrect.material.set_shader_param('palette', SpriteLoader.worldmap_palette_textures[tileset])
		map_texrects.append(texrect)
		add_child(texrect)
		texrect = TextureRect.new()
		texrect.rect_position.x = tileset * 256 * 2
		texrect.rect_position.y = 768
		texrect.rect_scale *= 4
		texrect.texture = SpriteLoader.worldmap_tile_atlas_textures[tileset]
		map_texrects.append(texrect)
		add_child(texrect)

func _create_worldmap_texrects() -> void:
	var map_tilesets = [0, 1, 0, 2, 2]
	for i in 1:
		var tileset = map_tilesets[i]
		var image = MapLoader.worldmaps[i].make_tile_map()
		map_images.append(image)
		var tex := SpriteLoader.texture_from_image(image)
		map_textures.append(tex)
		var texrect = TextureRect.new()
		texrect.rect_scale *= 8  #8  # Needs to have at least 1 pixel per tile pixel
		texrect.texture = tex
		texrect.material = worldmap_shader_mat.duplicate()
		texrect.material.set_shader_param('palette', SpriteLoader.worldmap_palette_textures[tileset])
		texrect.material.set_shader_param('tile_atlas', SpriteLoader.worldmap_tile_atlas_textures[tileset])
		map_texrects.append(texrect)
		add_child(texrect)

# Called when the node enters the scene tree for the first time.
func _ready() -> void:
	# Only create this after MapLoader and SpriteLoader have loaded!
	_create_worldmap_texrects()


# Called every frame. 'delta' is the elapsed time since the previous frame.
#func _process(delta: float) -> void:
#	pass