doodle/pkg/level/swatch.go
Noah Petherbridge 2b42a072a0 Code Layout Refactor
* All private Doodle source code into the pkg/ folder.
* Potentially public code into the lib/ folder.
* Centralize the logger into a subpackage.
2019-04-09 17:35:44 -07:00

57 lines
1.3 KiB
Go

package level
import (
"fmt"
"git.kirsle.net/apps/doodle/lib/render"
)
// Swatch holds details about a single value in the palette.
type Swatch struct {
Name string `json:"name"`
Color render.Color `json:"color"`
// Optional attributes.
Solid bool `json:"solid,omitempty"`
Fire bool `json:"fire,omitempty"`
Water bool `json:"water,omitempty"`
// Private runtime attributes.
index int // position in the Palette, for reverse of `Palette.byName`
// When the swatch is loaded from JSON we only get the index number, and
// need to expand out the swatch later when the palette is loaded.
paletteIndex int
isSparse bool
}
// NewSparseSwatch creates a sparse Swatch from a palette index that will need
// later expansion, when loading drawings from disk.
func NewSparseSwatch(paletteIndex int) *Swatch {
return &Swatch{
isSparse: true,
paletteIndex: paletteIndex,
}
}
func (s Swatch) String() string {
if s.isSparse {
return fmt.Sprintf("Swatch<sparse:%d>", s.paletteIndex)
}
if s.Name == "" {
return s.Color.String()
}
return s.Name
}
// IsSparse returns whether this Swatch is sparse (has only a palette index) and
// requires inflation.
func (s *Swatch) IsSparse() bool {
return s.isSparse
}
// Index returns the Swatch's position in the palette.
func (s *Swatch) Index() int {
return s.index
}