package world

import (
	"pacman/assets"
)

const (
	MAZE_WIDTH  = assets.MAZE_WIDTH
	MAZE_HEIGHT = assets.MAZE_HEIGHT
)

type Maze [MAZE_WIDTH * MAZE_HEIGHT]assets.Tile

// Create a new maze and load data.
func NewMaze(data []byte) Maze {
	m := Maze{}
	m.Load(data)
	return m
}

// Load data into maze.
func (m *Maze) Load(data []byte) {
	n_bytes := m.readMaze(data)

	for i := n_bytes; i < len(m); i++ {
		m[i] = 0
	}
}

// Read maze data.
func (m *Maze) readMaze(data []byte) int {
	i := 0
	for _, x := range data {
		if x == '\n' {
			continue
		}
		m[i] = assets.Tile(x)
		i++
		if i >= len(m) {
			break
		}
	}
	return i
}

func (m Maze) At(x, y uint8) assets.Tile {
	return m[uint16(x)+(uint16(y)*MAZE_WIDTH)]
}

func (m *Maze) Set(x, y uint8, value assets.Tile) {
	m[uint16(x)+(uint16(y)*MAZE_WIDTH)] = value
}