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Reject move commands in non-cardinal directions

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This commit is contained in:
Marc Di Luzio 2020-07-19 11:26:08 +01:00
parent 0e731df1a3
commit c2e3c9f090
4 changed files with 23 additions and 9 deletions
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16
pkg/maths/bearing.go
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@ -55,8 +55,8 @@ func (d Bearing) ShortString() string {
return bearingStrings[d].Short
}
// FromString gets the Direction from a string
func FromString(s string) (Bearing, error) {
// BearingFromString gets the Direction from a string
func BearingFromString(s string) (Bearing, error) {
for i, d := range bearingStrings {
if strings.EqualFold(d.Long, s) || strings.EqualFold(d.Short, s) {
return Bearing(i), nil
@ -80,3 +80,15 @@ var bearingVectors = []Vector{
func (d Bearing) Vector() Vector {
return bearingVectors[d]
}
// IsCardinal returns if this is a cardinal (NESW)
func (d Bearing) IsCardinal() bool {
switch d {
case North:
case East:
case South:
case West:
return true
}
return false
}

8
pkg/maths/bearing_test.go
View file

@ -13,19 +13,19 @@ func TestDirection(t *testing.T) {
assert.Equal(t, "N", dir.ShortString())
assert.Equal(t, Vector{X: 0, Y: 1}, dir.Vector())
dir, err := FromString("N")
dir, err := BearingFromString("N")
assert.NoError(t, err)
assert.Equal(t, North, dir)
dir, err = FromString("n")
dir, err = BearingFromString("n")
assert.NoError(t, err)
assert.Equal(t, North, dir)
dir, err = FromString("north")
dir, err = BearingFromString("north")
assert.NoError(t, err)
assert.Equal(t, North, dir)
dir, err = FromString("NorthWest")
dir, err = BearingFromString("NorthWest")
assert.NoError(t, err)
assert.Equal(t, NorthWest, dir)
}