func GetHitbox(sprite message.Sprite) hitbox.Hitbox {
switch sprite {
case PlaceholderSprite:
return hitbox.NewNull()
case PlayerSprite:
return hitbox.NewCircle(10)
case BallSprite:
return hitbox.NewCircle(10)
}
return nil
}
func TestCircle(t *testing.T) {
hb := hitbox.NewCircle(10)
contour := hb.Contour(&terrain.Position{10, 22})
if len(contour) != 4 {
t.Fatal("Circle hitbox contour must contain 4 points")
}
expected := []*terrain.Position{
&terrain.Position{20, 22},
&terrain.Position{10, 32},
&terrain.Position{0, 22},
&terrain.Position{10, 12},
}
// Compare rounded values, because of precision errors
for i, pt := range contour {
if !pt.ToMessage().Equals(expected[i].ToMessage()) {
t.Error("Invalid contour point at index", i, "expected", expected[i], "but got", pt)
}
}
}