doodle/pkg/play_scene.go

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package doodle
import (
"fmt"
"git.kirsle.net/apps/doodle/lib/events"
"git.kirsle.net/apps/doodle/lib/render"
"git.kirsle.net/apps/doodle/lib/ui"
"git.kirsle.net/apps/doodle/pkg/balance"
"git.kirsle.net/apps/doodle/pkg/collision"
"git.kirsle.net/apps/doodle/pkg/doodads"
"git.kirsle.net/apps/doodle/pkg/level"
"git.kirsle.net/apps/doodle/pkg/log"
"git.kirsle.net/apps/doodle/pkg/scripting"
"git.kirsle.net/apps/doodle/pkg/uix"
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)
// PlayScene manages the "Edit Level" game mode.
type PlayScene struct {
// Configuration attributes.
Filename string
Level *level.Level
CanEdit bool // i.e. you came from the Editor Mode
HasNext bool // has a next level to load next
// Private variables.
d *Doodle
drawing *uix.Canvas
scripting *scripting.Supervisor
running bool
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// UI widgets.
supervisor *ui.Supervisor
editButton *ui.Button
// The alert box shows up when the level goal is reached and includes
// buttons what to do next.
alertBox *ui.Window
alertBoxLabel *ui.Label
alertReplayButton *ui.Button // Replay level
alertEditButton *ui.Button // Edit Level
alertNextButton *ui.Button // Next Level
alertExitButton *ui.Button // Exit to menu
// Custom debug labels.
debPosition *string
debViewport *string
debScroll *string
debWorldIndex *string
// Player character
Player *uix.Actor
playerJumpCounter int // limit jump length
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}
// Name of the scene.
func (s *PlayScene) Name() string {
return "Play"
}
// Setup the play scene.
func (s *PlayScene) Setup(d *Doodle) error {
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)
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s.d = d
s.scripting = scripting.NewSupervisor()
s.supervisor = ui.NewSupervisor()
// Level Exit handler.
s.SetupAlertbox()
s.scripting.OnLevelExit(func() {
d.Flash("Hurray!")
// Pause the simulation.
s.running = false
// Toggle the relevant buttons on.
if s.CanEdit {
s.alertEditButton.Show()
}
if s.HasNext {
s.alertNextButton.Show()
}
// Always-visible buttons.
s.alertReplayButton.Show()
s.alertExitButton.Show()
// Show the alert box.
s.alertBox.Show()
})
// Initialize debug overlay values.
s.debPosition = new(string)
s.debViewport = new(string)
s.debScroll = new(string)
s.debWorldIndex = new(string)
customDebugLabels = []debugLabel{
{"Pixel:", s.debWorldIndex},
{"Player:", s.debPosition},
{"Viewport:", s.debViewport},
{"Scroll:", s.debScroll},
}
// Initialize the "Edit Map" button.
s.editButton = ui.NewButton("Edit", ui.NewLabel(ui.Label{
Text: "Edit (E)",
Font: balance.PlayButtonFont,
}))
s.editButton.Handle(ui.Click, func(p render.Point) {
s.EditLevel()
})
s.supervisor.Add(s.editButton)
// Initialize the drawing canvas.
s.drawing = uix.NewCanvas(balance.ChunkSize, false)
s.drawing.Name = "play-canvas"
s.drawing.MoveTo(render.Origin)
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.
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s.drawing.Resize(render.NewRect(int32(d.width), int32(d.height)))
s.drawing.Compute(d.Engine)
// Handler when an actor touches water or fire.
s.drawing.OnLevelCollision = func(a *uix.Actor, col *collision.Collide) {
if col.InFire {
a.Canvas.MaskColor = render.Black
s.DieByFire()
} else if col.InWater {
a.Canvas.MaskColor = render.DarkBlue
} else {
a.Canvas.MaskColor = render.Invisible
}
}
// Given a filename or map data to play?
if s.Level != nil {
log.Debug("PlayScene.Setup: received level from scene caller")
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)
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s.drawing.LoadLevel(d.Engine, s.Level)
s.drawing.InstallActors(s.Level.Actors)
} else if s.Filename != "" {
log.Debug("PlayScene.Setup: loading map from file %s", s.Filename)
// NOTE: s.LoadLevel also calls s.drawing.InstallActors
s.LoadLevel(s.Filename)
}
if s.Level == nil {
log.Debug("PlayScene.Setup: no grid given, initializing empty grid")
s.Level = level.New()
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)
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s.drawing.LoadLevel(d.Engine, s.Level)
s.drawing.InstallActors(s.Level.Actors)
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}
// Load all actor scripts.
s.drawing.SetScriptSupervisor(s.scripting)
if err := s.scripting.InstallScripts(s.Level); err != nil {
log.Error("PlayScene.Setup: failed to InstallScripts: %s", err)
}
// Load in the player character.
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)
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player, err := doodads.LoadFile("azu-blu.doodad")
if err != nil {
log.Error("PlayScene.Setup: failed to load player doodad: %s", err)
player = doodads.NewDummy(32)
}
s.Player = uix.NewActor("PLAYER", &level.Actor{}, player)
s.Player.MoveTo(render.NewPoint(128, 128))
s.drawing.AddActor(s.Player)
s.drawing.FollowActor = s.Player.ID()
// Set up the player character's script in the VM.
if err := s.scripting.AddLevelScript(s.Player.ID()); err != nil {
log.Error("PlayScene.Setup: scripting.InstallActor(player) failed: %s", err)
}
// Run all the actor scripts' main() functions.
if err := s.drawing.InstallScripts(); err != nil {
log.Error("PlayScene.Setup: failed to drawing.InstallScripts: %s", err)
}
if s.CanEdit {
d.Flash("Entered Play Mode. Press 'E' to edit this map.")
} else {
d.Flash("%s", s.Level.Title)
}
s.running = true
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return nil
}
// SetupAlertbox configures the alert box UI.
func (s *PlayScene) SetupAlertbox() {
window := ui.NewWindow("Level Completed")
window.Configure(ui.Config{
Width: 320,
Height: 160,
Background: render.Grey,
})
window.Compute(s.d.Engine)
{
frame := ui.NewFrame("Open Drawing Frame")
window.Pack(frame, ui.Pack{
Anchor: ui.N,
Fill: true,
Expand: true,
})
/******************
* Frame for selecting User Levels
******************/
s.alertBoxLabel = ui.NewLabel(ui.Label{
Text: "Congratulations on clearing the level!",
Font: balance.LabelFont,
})
frame.Pack(s.alertBoxLabel, ui.Pack{
Anchor: ui.N,
FillX: true,
PadY: 16,
})
/******************
* Confirm/cancel buttons.
******************/
bottomFrame := ui.NewFrame("Button Frame")
frame.Pack(bottomFrame, ui.Pack{
Anchor: ui.N,
FillX: true,
PadY: 8,
})
// Button factory for the various options.
makeButton := func(text string, handler func()) *ui.Button {
btn := ui.NewButton(text, ui.NewLabel(ui.Label{
Font: balance.LabelFont,
Text: text,
}))
btn.Handle(ui.Click, func(p render.Point) {
handler()
})
bottomFrame.Pack(btn, ui.Pack{
Anchor: ui.W,
PadX: 2,
})
s.supervisor.Add(btn)
btn.Hide() // all buttons hidden by default
return btn
}
s.alertReplayButton = makeButton("Play Again", func() {
s.RestartLevel()
})
s.alertEditButton = makeButton("Edit Level", func() {
s.EditLevel()
})
s.alertNextButton = makeButton("Next Level", func() {
s.d.Flash("Not Implemented")
})
s.alertExitButton = makeButton("Exit to Menu", func() {
s.d.Goto(&MainScene{})
})
}
s.alertBox = window
s.alertBox.Hide()
}
// EditLevel toggles out of Play Mode to edit the level.
func (s *PlayScene) EditLevel() {
log.Info("Edit Mode, Go!")
s.d.Goto(&EditorScene{
Filename: s.Filename,
Level: s.Level,
})
}
// RestartLevel starts the level over again.
func (s *PlayScene) RestartLevel() {
log.Info("Restart Level")
s.d.Goto(&PlayScene{
Filename: s.Filename,
Level: s.Level,
CanEdit: s.CanEdit,
})
}
// DieByFire ends the level by fire.
func (s *PlayScene) DieByFire() {
log.Info("Watch out for fire!")
s.alertBox.Title = "You've died!"
s.alertBoxLabel.Text = "Watch out for fire!"
s.alertReplayButton.Show()
if s.CanEdit {
s.alertEditButton.Show()
}
s.alertExitButton.Show()
s.alertBox.Show()
// Stop the simulation.
s.running = false
}
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// Loop the editor scene.
func (s *PlayScene) Loop(d *Doodle, ev *events.State) error {
// Update debug overlay values.
*s.debWorldIndex = s.drawing.WorldIndexAt(render.NewPoint(ev.CursorX.Now, ev.CursorY.Now)).String()
*s.debPosition = s.Player.Position().String() + " vel " + s.Player.Velocity().String()
*s.debViewport = s.drawing.Viewport().String()
*s.debScroll = s.drawing.Scroll.String()
s.supervisor.Loop(ev)
// Has the window been resized?
if resized := ev.Resized.Now; resized {
w, h := d.Engine.WindowSize()
if w != d.width || h != d.height {
d.width = w
d.height = h
s.drawing.Resize(render.NewRect(int32(d.width), int32(d.height)))
return nil
}
}
// Switching to Edit Mode?
if s.CanEdit && ev.KeyName.Read() == "e" {
s.EditLevel()
return nil
}
// Is the simulation still running?
if s.running {
// Loop the script supervisor so timeouts/intervals can fire in scripts.
if err := s.scripting.Loop(); err != nil {
log.Error("PlayScene.Loop: scripting.Loop: %s", err)
}
s.movePlayer(ev)
if err := s.drawing.Loop(ev); err != nil {
log.Error("Drawing loop error: %s", err.Error())
}
}
return nil
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}
// Draw the pixels on this frame.
func (s *PlayScene) Draw(d *Doodle) error {
// Clear the canvas and fill it with white.
d.Engine.Clear(render.White)
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// Draw the level.
s.drawing.Present(d.Engine, s.drawing.Point())
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// Draw out bounding boxes.
d.DrawCollisionBox(s.Player)
// Draw the Edit button.
var (
canSize = s.drawing.Size()
size = s.editButton.Size()
padding int32 = 8
)
s.editButton.Present(d.Engine, render.Point{
X: canSize.W - size.W - padding,
Y: canSize.H - size.H - padding,
})
// Draw the alert box window.
if !s.alertBox.Hidden() {
s.alertBox.Compute(d.Engine)
s.alertBox.MoveTo(render.Point{
X: int32(d.width/2) - (s.alertBox.Size().W / 2),
Y: int32(d.height/2) - (s.alertBox.Size().H / 2),
})
s.alertBox.Present(d.Engine, s.alertBox.Point())
}
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return nil
}
// movePlayer updates the player's X,Y coordinate based on key pressed.
func (s *PlayScene) movePlayer(ev *events.State) {
var playerSpeed = int32(balance.PlayerMaxVelocity)
// var gravity = int32(balance.Gravity)
var velocity render.Point
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if ev.Left.Now {
velocity.X = -playerSpeed
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}
if ev.Right.Now {
velocity.X = playerSpeed
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}
if ev.Up.Now && (s.Player.Grounded() || s.playerJumpCounter >= 0) {
velocity.Y = -playerSpeed
if s.Player.Grounded() {
s.playerJumpCounter = 20
}
}
if !s.Player.Grounded() {
s.playerJumpCounter--
}
// // Apply gravity if not grounded.
// if !s.Player.Grounded() {
// // Gravity has to pipe through the collision checker, too, so it
// // can't give us a cheated downward boost.
// velocity.Y += gravity
// }
s.Player.SetVelocity(velocity)
// TODO: invoke the player OnKeypress for animation testing
// if velocity != render.Origin {
s.scripting.To(s.Player.ID()).Events.RunKeypress(ev)
// }
}
// Drawing returns the private world drawing, for debugging with the console.
func (s *PlayScene) Drawing() *uix.Canvas {
return s.drawing
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}
// LoadLevel loads a level from disk.
func (s *PlayScene) LoadLevel(filename string) error {
s.Filename = filename
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level, err := level.LoadFile(filename)
if err != nil {
return fmt.Errorf("PlayScene.LoadLevel(%s): %s", filename, err)
}
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s.Level = level
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)
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s.drawing.LoadLevel(s.d.Engine, s.Level)
s.drawing.InstallActors(s.Level.Actors)
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return nil
}
// Destroy the scene.
func (s *PlayScene) Destroy() error {
return nil
}