can load and output a layout

map.go

@@ -0,0 +1,71 @@
+package roba
+
+import (
+	"bufio"
+	"bytes"
+	"fmt"
+	"io"
+	"os"
+	"strconv"
+	"strings"
+)
+
+type Tile byte
+
+const (
+	TileWall = '#'
+)
+
+type Layout struct {
+	Height int
+	Width  int
+	layout [][]byte
+}
+
+type Map interface {
+	DebugPrint()
+}
+
+func NewMap(path string) (Map, error) {
+	m := &Layout{}
+	f, err := os.Open(path)
+	if err != nil {
+		return nil, err
+	}
+	br := bufio.NewReader(f)
+	buf, err := br.ReadString('\n')
+	buf = strings.TrimRight(buf, "\n")
+	if err != nil {
+		return nil, err
+	}
+	s := strings.Split(buf, " ")
+	m.Width, err = strconv.Atoi(s[0])
+	if err != nil {
+		return nil, err
+	}
+	m.Height, err = strconv.Atoi(s[1])
+	if err != nil {
+		return nil, err
+	}
+	for j := 0; j < m.Height; j++ {
+		b, err := br.ReadBytes('\n')
+		if err == io.EOF {
+			b = bytes.Repeat([]byte{TileWall}, m.Width)
+		}
+		if len(b) < m.Width {
+			bytes.TrimRight(b, "\n")
+			b = append(b, bytes.Repeat([]byte{TileWall}, m.Width-len(b))...)
+		}
+		if len(b) > m.Width {
+			b = b[:m.Width]
+		}
+		m.layout = append(m.layout, b)
+	}
+	return m, nil
+}
+
+func (l *Layout) DebugPrint() {
+	for _, x := range l.layout {
+		fmt.Println(string(x))
+	}
+}