Noah Petherbridge
e1cbff8c3f
* Add ui.Window to easily create reusable windows with titles.
* Add a palette window (panel) to the right edge of the Edit Mode.
* Has Radio Buttons listing the colors available in the palette.
* Add palette support to Edit Mode so when you draw pixels, they take
on the color and attributes of the currently selected Swatch in your
palette.
* Revise the on-disk format to better serialize the Palette object to
JSON.
* Break Play Mode: collision detection fails because the Grid key
elements are now full Pixel objects (which retain their Palette and
Swatch properties).
* The Grid will need to be re-worked to separate X,Y coordinates from
the Pixel metadata to just test "is something there, and what is
it?"
91 lines
1.9 KiB
Go
91 lines
1.9 KiB
Go
package level
|
|
|
|
import (
|
|
"git.kirsle.net/apps/doodle/render"
|
|
)
|
|
|
|
// DefaultPalette returns a sensible default palette.
|
|
func DefaultPalette() *Palette {
|
|
return &Palette{
|
|
Swatches: []*Swatch{
|
|
&Swatch{
|
|
Name: "solid",
|
|
Color: render.Black,
|
|
Solid: true,
|
|
},
|
|
&Swatch{
|
|
Name: "decoration",
|
|
Color: render.Grey,
|
|
},
|
|
&Swatch{
|
|
Name: "fire",
|
|
Color: render.Red,
|
|
Fire: true,
|
|
},
|
|
&Swatch{
|
|
Name: "water",
|
|
Color: render.Blue,
|
|
Water: true,
|
|
},
|
|
},
|
|
}
|
|
}
|
|
|
|
// Palette holds an index of colors used in a drawing.
|
|
type Palette struct {
|
|
Swatches []*Swatch `json:"swatches"`
|
|
|
|
// Private runtime values
|
|
ActiveSwatch string `json:"-"` // name of the actively selected color
|
|
byName map[string]int // Cache map of swatches by name
|
|
}
|
|
|
|
// 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`
|
|
}
|
|
|
|
func (s Swatch) String() string {
|
|
return s.Name
|
|
}
|
|
|
|
// Index returns the Swatch's position in the palette.
|
|
func (s Swatch) Index() int {
|
|
return s.index
|
|
}
|
|
|
|
// Get a swatch by name.
|
|
func (p *Palette) Get(name string) (result *Swatch, exists bool) {
|
|
p.update()
|
|
|
|
if index, ok := p.byName[name]; ok && index < len(p.Swatches) {
|
|
result = p.Swatches[index]
|
|
exists = true
|
|
}
|
|
|
|
return
|
|
}
|
|
|
|
// update the internal caches and such.
|
|
func (p *Palette) update() {
|
|
// Initialize the name cache if nil or if the size disagrees with the
|
|
// length of the swatches available.
|
|
if p.byName == nil || len(p.byName) != len(p.Swatches) {
|
|
// Initialize the name cache.
|
|
p.byName = map[string]int{}
|
|
for i, swatch := range p.Swatches {
|
|
swatch.index = i
|
|
p.byName[swatch.Name] = i
|
|
}
|
|
}
|
|
}
|