Commit Graph

9 Commits

Author SHA1 Message Date
20771fbe13 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 13:32:25 -07:00
279a980106 WIP Texture Caching
NOTICE: Chunk size set to 100 for visual testing!
NOTICE: guitest references a bmp file that isn't checked in!

BUGS REMAINING:
- When scrolling the level in Edit Mode, some of the chunks will pop
  out of existence randomly.
- When clicking-dragging to draw in Edit Mode, if the scroll position
  is not at 0,0 then the pixels drawn will be offset from the cursor.
- These are to do with the Scroll position and chunk coordinate calc
  functions probably.

Implements a texture caching interface to stop redrawing everything
pixel by pixel on every frame.

The texture caching workflow is briefly:

- The uix.Canvas widget's Present() function iterates over the list of
  Chunk Coordinates that are visible inside of the current viewport
  (i.e. viewable on screen)
- For each Chunk:
  - Make it render and/or return its cached Texture object.
  - Work out how much of the Chunk will be visible and how to crop the
    boxes for the Copy()
  - Copy the cached Texture instead of drawing all the pixels every
    time like we were doing before.
- The Chunk.Texture() function that returns said Texture:
  - It calls Chunk.ToBitmap() to save a bitmap on disk.
  - It calls Engine.NewBitmap() to get a Texture it can hang onto.
  - It hangs onto the Texture and returns it on future calls.
  - Any call to Set() or Delete() a pixel will invalidate the cache
    (mark the Chunk "dirty") and Texture() will rebuild next call.

The interface `render.Texturer` provides a way for rendering backends
(SDL2, OpenGL) to transport a "texture" of their own kind without
exposing the type details to the user.

The interface `render.Engine` adds two new methods:

* NewBitmap(filename string) (Texturer, error)
* Copy(t Texturer, src, dst Rect)

NewBitmap should open a bitmap image on disk and return it wrapped in a
Texturer (really it's an SDL2 Texture). This is for caching purposes.
Next the Copy() function blits the texture onto the screen renderer
using the source and destination rectangles.

The uix.Canvas widget orchestrates the caching for the drawing it's
responsible for. It queries which chunks are viewable in the Canvas
viewport (scroll and bounding boxes), has each chunk render out their
entire bitmap image to then cache them as SDL textures and then only
_those_ need to be copied out to the renderer each frame.

The frame rate now sits at a decent 60 FPS even when the drawing gets
messy and full of lines. Each unique version of each chunk needs to
render only one time and then it's a fast copy operation for future
ticks.

Other changes:

- Chunker now assigns each Chunk what their coordinate and size are, so
  that the chunk can self reference that information. This info is
  considered read-only but that isn't really enforced.
- Add Chunker.IterViewportChunks() that returns a channel of Chunk
  Coordinates that are visible in your viewport, rather than iterating
  over all of the pixels in all of those chunks.
- Add Chunk.ToBitmap(filename) that causes a Chunk to render its pixels
  to a bitmap image on disk. SDL2 can natively speak Bitmaps for texture
  caching. Currently these go to files in /tmp but will soon go into your
  $XDG_CACHE_FOLDER instead.
- Add Chunk.Texture() that causes a Chunk to render and then return a
  cached bitmap texture of the pixels it's responsible for. The texture
  is cached until the Chunk is next modified with Set() or Delete().
- UI: add an Image widget that currently just shows a bitmap image. It
  was the first test for caching bitmap images for efficiency. Can show
  any *.bmp file on disk!
- Editor UI: make the StatusBar boxes dynamically build from an array
  of string pointers to make it SUPER EASY to add/remove labels.
2018-10-17 20:52:44 -07:00
a7fd3aa1ca Doodad Edit Mode: Saving and Loading From Disk
Adds the first features to Edit Mode to support creation of Doodad
files! The "New Doodad" button pops up a prompt for a Doodad size
(default 100px) and configures the Canvas widget and makes a Doodad
struct instead of a Level to manage.

* Move the custom Canvas widget from `level.Canvas` to `uix.Canvas`
  (the uix package is for our custom UI widgets now)
* Rename the `doodads.Doodad` interface (for runtime instances of
  Doodads) to `doodads.Actor` and make `doodads.Doodad` describe the
  file format and JSON schema instead.
* Rename the `EditLevel()` method to `EditDrawing()` and it inspects the
  file extension to know whether to launch the Edit Mode for a Level or
  for a Doodad drawing.
* Doodads can be edited by using the `-edit` CLI flag or using the
  in-game file open features (including `edit` command of dev console).
* Add a `Scrollable` boolean to uix.Canvas to restrict the keyboard
  being able to scroll the level, for editing Doodads which have a fixed
  size.
2018-09-26 10:07:22 -07:00
5434484b6e Abstract Drawing Canvas into Reusable Widget
The `level.Canvas` is a widget that holds onto its Palette and Grid and
has interactions to allow scrolling and editing the grid using the
swatches available on the palette.

Thus all of the logic in the Editor Mode for drawing directly onto the
root SDL surface are now handled inside a level.Canvas instance.

The `level.Canvas` widget has the following properties:
* Like any widget it has an X,Y position and a width/height.
* It has a Scroll position to control which slice of its drawing will be
  visible inside its bounding box.
* It supports levels having negative coordinates for their pixels. It
  doesn't care. The default Scroll position is (0,0) at the top left
  corner of the widget but you can scroll into the negatives and see the
  negative pixels.
* Keyboard keys will scroll the viewport inside the canvas.
* The canvas draws only the pixels that are visible inside its bounding
  box.

This feature will eventually pave the way toward:
* Doodads being dropped on top of your map, each Doodad being its own
  Canvas widget.
* Using drawings as button icons for the user interface, as the Canvas
  is a normal widget.
2018-08-16 20:37:19 -07:00
5956863996 Menu Toolbar for Editor + Shell Prompts + Theme
* Added a "menu toolbar" to the top of the Edit Mode with useful buttons
  that work: New Level, New Doodad (same thing), Save, Save as, Open.
* Added ability for the dev console to prompt the user for a question,
  which opens the console automatically. "Save", "Save as" and "Load"
  ask for their filenames this way.
* Started groundwork for theming the app. The palette window is a light
  brown with an orange title bar, the Menu Toolbar has a black
  background, etc.
* Added support for multiple fonts instead of just monospace. DejaVu
  Sans (normal and bold) are used now for most labels and window titles,
  respectively. The dev console uses DejaVu Sans Mono as before.
* Update ui.Label to accept PadX and PadY separately instead of only
  having the Padding option which did both.
* Improvements to Frame packing algorithm.
* Set the SDL draw mode to BLEND so we can use alpha colors properly,
  so now the dev console is semi-translucent.
2018-08-11 17:30:00 -07:00
8624a28ea9 Add StatusBar to Editor Mode, Iterate on UI Toolkit
* Added `BoxSize()` to Widget that reports the full box size including
  borders and margin.
* The Frame uses the `BoxSize()` of widgets to position them.
  Reintroduces some padding issues (boxes on the GUI Test stick out of
  bounds a bit) but is on the right track.
* Renamed `Padding` to `Margin` on the Widget object, since the Margin
  is taken into consideration along with Outline and Border in computing
  the widget's BoxSize.
* Restructured the Label widget to take a Text or TextVariable property
  and the font settings (render.Text) are in a new `Font` property.
2018-08-05 12:54:57 -07:00
316456ef03 Add CheckButton and CheckBox with Bound Booleans
CheckButton is a generic component based on Button that additionally
takes a *bool variable to manage. When the CheckButton is clicked or
unclicked, it will toggle the bool var and its border style will "stick"
in or out depending on the state.

Checkbox is a Frame widget that wraps a CheckButton and another child
widget, such as a Label. Interacting with the child widget will forward
all of its mouse events to the CheckButton, so that the Label could be
clicked instead of just the box itself.
2018-08-01 19:52:09 -07:00
cbef5a46cb UI: Finish Frame Packing
* Frame.Pack() now supports Fill and Expand and works like Tk.
* The GUITest Scene now draws a large window with two fixed side panels,
  an expanding body panel, and a fixed footer with buttons. The panels
  are filled with other buttons and widgets showing off the Frame
  packing.
2018-08-01 18:52:52 -07:00
2e36d9ca85 WIP Labels 2018-07-31 17:18:13 -07:00