package soko

import (
	"opslag.de/schobers/geom"
)

type Level struct {
	Width    int
	Height   int
	Tiles    []TileType
	Entities []EntityType
}

func (l Level) IdxToPos(i int) geom.Point { return geom.Pt(i%l.Width, i/l.Width) }

func (l Level) PosToIdx(p geom.Point) int {
	if p.X < 0 || p.Y < 0 || p.X >= l.Width || p.Y >= l.Height {
		return -1
	}
	return p.Y*l.Width + p.X
}

func (l Level) State() State {
	s := NewState()
	for i, t := range l.Tiles {
		pos := l.IdxToPos(i)
		switch t {
		case TileTypeBasic:
			s.BasicTiles.Add(pos)
		case TileTypeMagma:
			s.MagmaTiles.Add(pos)
		}
	}

	for i, e := range l.Entities {
		pos := l.IdxToPos(i)
		switch e {
		case EntityTypeBrick:
			s.AddBrick(pos)
		case EntityTypePlayer:
			s.SetPlayer(pos)
		case EntityTypeTarget:
			s.SetTarget(pos)
		}
	}
	return s
}