package level import ( "encoding/json" "fmt" "git.kirsle.net/apps/doodle/balance" "git.kirsle.net/apps/doodle/render" ) // Level is the container format for Doodle map drawings. type Level struct { Version int `json:"version"` // File format version spec. GameVersion string `json:"gameVersion"` // Game version that created the level. Title string `json:"title"` Author string `json:"author"` Password string `json:"passwd"` Locked bool `json:"locked"` // Chunked pixel data. Chunker *Chunker `json:"chunks"` // XXX: deprecated? Width int32 `json:"w"` Height int32 `json:"h"` // The Palette holds the unique "colors" used in this map file, and their // properties (solid, fire, slippery, etc.) Palette *Palette `json:"palette"` // Pixels is a 2D array indexed by [X][Y]. The cell values are indexes into // the Palette. Pixels []*Pixel `json:"pixels"` } // New creates a blank level object with all its members initialized. func New() *Level { return &Level{ Version: 1, Chunker: NewChunker(balance.ChunkSize), Pixels: []*Pixel{}, Palette: &Palette{}, } } // Pixel associates a coordinate with a palette index. type Pixel struct { X int32 `json:"x"` Y int32 `json:"y"` PaletteIndex int32 `json:"p"` // Private runtime values. Palette *Palette `json:"-"` // pointer to its palette, TODO: needed? Swatch *Swatch `json:"-"` // pointer to its swatch, for when rendered. } func (p Pixel) String() string { return fmt.Sprintf("Pixel<%s '%s' (%d,%d)>", p.Swatch.Color, p.Swatch.Name, p.X, p.Y) } // Point returns the pixel's point. func (p Pixel) Point() render.Point { return render.Point{ X: p.X, Y: p.Y, } } // MarshalJSON serializes a Pixel compactly as a simple list. func (p Pixel) MarshalJSON() ([]byte, error) { return []byte(fmt.Sprintf( `[%d, %d, %d]`, p.X, p.Y, p.PaletteIndex, )), nil } // UnmarshalJSON loads a Pixel from JSON again. func (p *Pixel) UnmarshalJSON(text []byte) error { var triplet []int32 err := json.Unmarshal(text, &triplet) if err != nil { return err } p.X = triplet[0] p.Y = triplet[1] if len(triplet) > 2 { p.PaletteIndex = triplet[2] } return nil }