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package cube
import (
"errors"
"strings"
)
type colour uint8
const (
White colour = iota
Yellow
Red
Orange
Blue
Green
)
func (c colour) String() string {
switch c {
case White:
return "[97mW[0m"
case Yellow:
return "[97mY[0m"
case Red:
return "[97mR[0m"
case Orange:
return "[97mO[0m"
case Blue:
return "[97mB[0m"
case Green:
return "[97mG[0m"
}
return ""
}
type row []colour
func (r row) String() (s string) {
for i := range r {
s += r[i].String()
}
return
}
type face []row
func (f face) colGet(c int) (r row) {
r = make(row, len(f))
for i := 0; i < len(f); i++ {
r[i] = f[i][c]
}
return
}
func (f *face) colSet(c int, r row) {
for i := 0; i < len(*f); i++ {
(*f)[i][c] = r[i]
}
}
type Cube struct {
front face
back face
top face
bottom face
left face
right face
}
func New(size int) (*Cube, error) {
if size < 1 {
return nil, errors.New("Size must be greater than 0.")
}
var c Cube
c.front = make(face, size)
c.back = make(face, size)
c.top = make(face, size)
c.bottom = make(face, size)
c.left = make(face, size)
c.right = make(face, size)
for i := 0; i < size; i++ {
c.front[i] = make(row, size)
c.back[i] = make(row, size)
c.top[i] = make(row, size)
c.bottom[i] = make(row, size)
c.left[i] = make(row, size)
c.right[i] = make(row, size)
for j := 0; j < size; j++ {
c.front[i][j] = Red
c.back[i][j] = Orange
c.top[i][j] = White
c.bottom[i][j] = Yellow
c.left[i][j] = Green
c.right[i][j] = Blue
}
}
return &c, nil
}
func (c Cube) Size() int {
return len(c.front)
}
func (c Cube) String() (r string) {
s := strings.Repeat(" ", c.Size()+2)
for i := 0; i < c.Size(); i++ {
r += s + c.top[i].String() + "\n"
}
r += "\n"
for i := 0; i < c.Size(); i++ {
r += c.left[i].String() + " " +
c.front[i].String() + " " +
c.right[i].String() + " " +
c.back[i].String() + "\n"
}
r += "\n"
for i := 0; i < c.Size(); i++ {
r += s + c.bottom[i].String() + "\n"
}
return
}
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