doodle/pkg/level/fmt_json.go

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package level
import (
"bytes"
"encoding/json"
"fmt"
"io/ioutil"
"os"
"git.kirsle.net/apps/doodle/pkg/balance"
)
Bindata: Embedding Doodads and Levels (for WASM) * Use `go-bindata` to embed built-in doodads and levels directly into the Doodle binary. `make bindata` produces the bindata source file. * Add `FromJSON()` method to Levels and Doodads to load objects from JSON strings in memory (for bindata built-ins or WASM ajax requests) * Update file loading functions to check the embedded bindata files. * pkg/config.go#EditFile: * Supports editing a level from bindata (TODO: remove this support) * If the "assets/levels/%(simple-name.level)" exists in bindata, edits that drawing. * No such support for editing built-in doodads. * WASM has no filesystem access to edit files except built-in levels (yet) * pkg/doodads#ListDoodads: * Prepends built-in doodads from bindata to the returned list. * WASM: no filesystem access so gets only the built-ins. * pkg/doodads#LoadFile: * Checks built-in bindata store first for doodad files. * WASM: tries an HTTP request if not found in bindata but can go no further if not found (no filesystem access) * pkg/filesystem#FindFile: * This function finds a level/doodad by checking all the places. * If the level or doodad exists in bindata built-in, always returns its system path like "assets/doodads/test.doodad" * WASM: always returns the built-in candidate path even if not found in bindata so that ajax GET can be attempted. * pkg/level#ListSystemLevels: * New function that lists the system level files, similar to the equivalent doodads function. * Prepends the bindata built-in level files. * WASM: only returns the built-ins (no filesystem support) * Desktop: also lists and returns the assets/levels/ directory. * pkg/level#LoadFile: * Like the doodads.LoadFile, tries from built-in bindata first, then ajax request (WASM) before accessing the filesystem (desktop) * Menu Scene: TODO, list the built-in levels in the Load Level menu. This feature will soon go away when WASM gets its own storage for user levels (localStorage instead of filesystem)
2019-06-27 22:07:34 +00:00
// FromJSON loads a level from JSON string.
func FromJSON(filename string, data []byte) (*Level, error) {
var m = &Level{}
err := json.Unmarshal(data, m)
// Fill in defaults.
if m.Wallpaper == "" {
m.Wallpaper = DefaultWallpaper
}
// Inflate the chunk metadata to map the pixels to their palette indexes.
m.Chunker.Inflate(m.Palette)
m.Actors.Inflate()
// Inflate the private instance values.
m.Palette.Inflate()
return m, err
}
// ToJSON serializes the level as JSON.
func (m *Level) ToJSON() ([]byte, error) {
out := bytes.NewBuffer([]byte{})
encoder := json.NewEncoder(out)
if balance.JSONIndent {
encoder.SetIndent("", "\t")
}
err := encoder.Encode(m)
return out.Bytes(), err
}
// LoadJSON loads a map from JSON file.
func LoadJSON(filename string) (*Level, error) {
fh, err := os.Open(filename)
if err != nil {
return nil, err
}
defer fh.Close()
Implement Chunk System for Pixel Data Starts the implementation of the chunk-based pixel storage system for levels and drawings. Previously the levels had a Pixels structure which was just an array of X,Y and palette index triplets. The new chunk system divides the map up into square chunks, and lets each chunk manage its own memory layout. The "MapAccessor" layout is implemented first which is a map of X,Y coordinates to their Swatches (pointer to an index of the palette). When serialized the MapAccessor maps the "X,Y": "index" similarly to the old Pixels array. The object hierarchy for the chunk system is like: * Chunker: the manager of the chunks who keeps track of the ChunkSize and a map of "chunk coordinates" to the chunk in charge of it. * Chunk: a part of the drawing ChunkSize length square. A chunk has a Type (of how it stores its data, 0 being a map[Point]Swatch and 1 being a [][]Swatch 2D array), and the chunk has an Accessor which implements the underlying type. * Accessor: an interface for a Chunk to provide access to its pixels. * MapAccessor: a "sparse map" of coordinates to their Swatches. * GridAccessor: TBD, will be a "dense" 2D grid of Swatches. The JSON files are loaded in two passes: 1. The chunks only load their swatch indexes from disk. 2. With the palette also loaded, the chunks are "inflated" and linked to their swatch pointers. Misc changes: * The `level.Canvas` UI widget switches from the old Grid data type to being able to directly use a `level.Chunker` * The Chunker is a shared data type between the on-disk level format and the actual renderer (level.Canvas), so saving the level is easy because you can just pull the Chunker out from the canvas. * ChunkSize is stored inside the level file and the default value is at balance/numbers.go: 1000
2018-09-23 22:20:45 +00:00
// Decode the JSON file from disk.
m := New()
decoder := json.NewDecoder(fh)
err = decoder.Decode(&m)
if err != nil {
Implement Chunk System for Pixel Data Starts the implementation of the chunk-based pixel storage system for levels and drawings. Previously the levels had a Pixels structure which was just an array of X,Y and palette index triplets. The new chunk system divides the map up into square chunks, and lets each chunk manage its own memory layout. The "MapAccessor" layout is implemented first which is a map of X,Y coordinates to their Swatches (pointer to an index of the palette). When serialized the MapAccessor maps the "X,Y": "index" similarly to the old Pixels array. The object hierarchy for the chunk system is like: * Chunker: the manager of the chunks who keeps track of the ChunkSize and a map of "chunk coordinates" to the chunk in charge of it. * Chunk: a part of the drawing ChunkSize length square. A chunk has a Type (of how it stores its data, 0 being a map[Point]Swatch and 1 being a [][]Swatch 2D array), and the chunk has an Accessor which implements the underlying type. * Accessor: an interface for a Chunk to provide access to its pixels. * MapAccessor: a "sparse map" of coordinates to their Swatches. * GridAccessor: TBD, will be a "dense" 2D grid of Swatches. The JSON files are loaded in two passes: 1. The chunks only load their swatch indexes from disk. 2. With the palette also loaded, the chunks are "inflated" and linked to their swatch pointers. Misc changes: * The `level.Canvas` UI widget switches from the old Grid data type to being able to directly use a `level.Chunker` * The Chunker is a shared data type between the on-disk level format and the actual renderer (level.Canvas), so saving the level is easy because you can just pull the Chunker out from the canvas. * ChunkSize is stored inside the level file and the default value is at balance/numbers.go: 1000
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return m, fmt.Errorf("level.LoadJSON: JSON decode error: %s", err)
}
Wallpapers and Bounded Levels Implement the Wallpaper system into the levels and the concept of Bounded and Unbounded levels. The first wallpaper image is notepad.png which looks like standard ruled notebook paper. On bounded levels, the top/left edges of the page look as you would expect and the blue lines tile indefinitely in the positive directions. On unbounded levels, you only get the repeating blue lines but not the edge pieces. A wallpaper is just a rectangular image file. The image is divided into four equal quadrants to be the Corner, Top, Left and Repeat textures for the wallpaper. The Repeat texture is ALWAYS used and fills all the empty space behind the drawing. (Doodads draw with blank canvases as before because only levels have wallpapers!) Levels have four options of a "Page Type": - Unbounded (default, infinite space) - NoNegativeSpace (has a top left edge but can grow infinitely) - Bounded (has a top left edge and bounded size) - Bordered (bounded with bordered texture; NOT IMPLEMENTED!) The scrollable viewport of a Canvas will respect the wallpaper and page type settings of a Level loaded into it. That is, if the level has a top left edge (not Unbounded) you can NOT scroll to see negative coordinates below (0,0) -- and if the level has a max dimension set, you can't scroll to see pixels outside those dimensions. The Canvas property NoLimitScroll=true will override the scroll locking and let you see outside the bounds, for debugging. - Default map settings for New Level are now: - Page Type: NoNegativeSpace - Wallpaper: notepad.png (default) - MaxWidth: 2550 (8.5" * 300 ppi) - MaxHeight: 3300 ( 11" * 300 ppi)
2018-10-28 05:22:13 +00:00
// Fill in defaults.
if m.Wallpaper == "" {
m.Wallpaper = DefaultWallpaper
}
Implement Chunk System for Pixel Data Starts the implementation of the chunk-based pixel storage system for levels and drawings. Previously the levels had a Pixels structure which was just an array of X,Y and palette index triplets. The new chunk system divides the map up into square chunks, and lets each chunk manage its own memory layout. The "MapAccessor" layout is implemented first which is a map of X,Y coordinates to their Swatches (pointer to an index of the palette). When serialized the MapAccessor maps the "X,Y": "index" similarly to the old Pixels array. The object hierarchy for the chunk system is like: * Chunker: the manager of the chunks who keeps track of the ChunkSize and a map of "chunk coordinates" to the chunk in charge of it. * Chunk: a part of the drawing ChunkSize length square. A chunk has a Type (of how it stores its data, 0 being a map[Point]Swatch and 1 being a [][]Swatch 2D array), and the chunk has an Accessor which implements the underlying type. * Accessor: an interface for a Chunk to provide access to its pixels. * MapAccessor: a "sparse map" of coordinates to their Swatches. * GridAccessor: TBD, will be a "dense" 2D grid of Swatches. The JSON files are loaded in two passes: 1. The chunks only load their swatch indexes from disk. 2. With the palette also loaded, the chunks are "inflated" and linked to their swatch pointers. Misc changes: * The `level.Canvas` UI widget switches from the old Grid data type to being able to directly use a `level.Chunker` * The Chunker is a shared data type between the on-disk level format and the actual renderer (level.Canvas), so saving the level is easy because you can just pull the Chunker out from the canvas. * ChunkSize is stored inside the level file and the default value is at balance/numbers.go: 1000
2018-09-23 22:20:45 +00:00
// Inflate the chunk metadata to map the pixels to their palette indexes.
m.Chunker.Inflate(m.Palette)
Draw Actors Embedded in Levels in Edit Mode Add the JSON format for embedding Actors (Doodad instances) inside of a Level. I made a test map that manually inserted a couple of actors. Actors are given to the Canvas responsible for the Level via the function `InstallActors()`. So it means you'll call LoadLevel and then InstallActors to hook everything up. The Canvas creates sub-Canvas widgets from each Actor. After drawing the main level geometry from the Canvas.Chunker, it calls the drawActors() function which does the same but for Actors. Levels keep a global map of all Actors that exist. For any Actors that are visible within the Viewport, their sub-Canvas widgets are presented appropriately on top of the parent Canvas. In case their sub-Canvas overlaps the parent's boundaries, their sub-Canvas is resized and moved appropriately. - Allow the MainWindow to be resized at run time, and the UI recalculates its sizing and position. - Made the in-game Shell properties editable via environment variables. The kirsle.env file sets a blue and pink color scheme. - Begin the ground work for Levels and Doodads to embed files inside their data via the level.FileSystem type. - UI: Labels can now contain line break characters. It will appropriately render multiple lines of render.Text and take into account the proper BoxSize to contain them all. - Add environment variable DOODLE_DEBUG_ALL=true that will turn on ALL debug overlay and visualization options. - Add debug overlay to "tag" each Canvas widget with some of its details, like its Name and World Position. Can be enabled with the environment variable DEBUG_CANVAS_LABEL=true - Improved the FPS debug overlay to show in labeled columns and multiple colors, with easy ability to add new data points to it.
2018-10-19 20:31:58 +00:00
m.Actors.Inflate()
Implement Chunk System for Pixel Data Starts the implementation of the chunk-based pixel storage system for levels and drawings. Previously the levels had a Pixels structure which was just an array of X,Y and palette index triplets. The new chunk system divides the map up into square chunks, and lets each chunk manage its own memory layout. The "MapAccessor" layout is implemented first which is a map of X,Y coordinates to their Swatches (pointer to an index of the palette). When serialized the MapAccessor maps the "X,Y": "index" similarly to the old Pixels array. The object hierarchy for the chunk system is like: * Chunker: the manager of the chunks who keeps track of the ChunkSize and a map of "chunk coordinates" to the chunk in charge of it. * Chunk: a part of the drawing ChunkSize length square. A chunk has a Type (of how it stores its data, 0 being a map[Point]Swatch and 1 being a [][]Swatch 2D array), and the chunk has an Accessor which implements the underlying type. * Accessor: an interface for a Chunk to provide access to its pixels. * MapAccessor: a "sparse map" of coordinates to their Swatches. * GridAccessor: TBD, will be a "dense" 2D grid of Swatches. The JSON files are loaded in two passes: 1. The chunks only load their swatch indexes from disk. 2. With the palette also loaded, the chunks are "inflated" and linked to their swatch pointers. Misc changes: * The `level.Canvas` UI widget switches from the old Grid data type to being able to directly use a `level.Chunker` * The Chunker is a shared data type between the on-disk level format and the actual renderer (level.Canvas), so saving the level is easy because you can just pull the Chunker out from the canvas. * ChunkSize is stored inside the level file and the default value is at balance/numbers.go: 1000
2018-09-23 22:20:45 +00:00
// Inflate the private instance values.
m.Palette.Inflate()
return m, err
}
// WriteJSON writes a level to JSON on disk.
func (m *Level) WriteJSON(filename string) error {
json, err := m.ToJSON()
if err != nil {
return fmt.Errorf("Level.WriteJSON: JSON encode error: %s", err)
}
err = ioutil.WriteFile(filename, json, 0755)
if err != nil {
return fmt.Errorf("Level.WriteJSON: WriteFile error: %s", err)
}
return nil
}