doodle/pkg/main_scene.go

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package doodle
import (
"fmt"
"git.kirsle.net/apps/doodle/pkg/balance"
"git.kirsle.net/apps/doodle/pkg/branding"
"git.kirsle.net/apps/doodle/pkg/level"
"git.kirsle.net/apps/doodle/pkg/levelpack"
"git.kirsle.net/apps/doodle/pkg/license"
"git.kirsle.net/apps/doodle/pkg/log"
"git.kirsle.net/apps/doodle/pkg/modal/loadscreen"
"git.kirsle.net/apps/doodle/pkg/native"
"git.kirsle.net/apps/doodle/pkg/scripting"
"git.kirsle.net/apps/doodle/pkg/shmem"
"git.kirsle.net/apps/doodle/pkg/uix"
"git.kirsle.net/apps/doodle/pkg/updater"
"git.kirsle.net/apps/doodle/pkg/windows"
"git.kirsle.net/go/render"
"git.kirsle.net/go/render/event"
"git.kirsle.net/go/ui"
"git.kirsle.net/go/ui/style"
)
// MainScene implements the main menu of Doodle.
type MainScene struct {
Supervisor *ui.Supervisor
// Background wallpaper canvas.
scripting *scripting.Supervisor
canvas *uix.Canvas
// UI components.
labelTitle *ui.Label
labelSubtitle *ui.Label
labelVersion *ui.Label
labelHint *ui.Label
frame *ui.Frame // Main button frame
winRegister *ui.Window
winSettings *ui.Window
winLevelPacks *ui.Window
// Update check variables.
updateButton *ui.Button
updateInfo updater.VersionInfo
// Lazy scroll variables. See LoopLazyScroll().
lazyScrollBounce bool
lazyScrollTrajectory render.Point
lazyScrollLastValue render.Point
// Landscape mode: if the screen isn't tall enough to see the main
// menu we redo the layout to be landscape friendly. NOTE: this only
// happens one time, and does not re-adapt when the window is made
// tall enough again.
landscapeMode bool
}
// Name of the scene.
func (s *MainScene) Name() string {
return "Main"
}
// Setup the scene.
func (s *MainScene) Setup(d *Doodle) error {
s.Supervisor = ui.NewSupervisor()
if err := s.SetupDemoLevel(d); err != nil {
return err
}
// Main title label
s.labelTitle = ui.NewLabel(ui.Label{
Text: branding.AppName,
Font: balance.TitleScreenFont,
})
s.labelTitle.Compute(d.Engine)
// Subtitle/byline.
s.labelSubtitle = ui.NewLabel(ui.Label{
Text: branding.Byline,
Font: balance.TitleScreenSubtitleFont,
})
s.labelSubtitle.Compute(d.Engine)
// Version label.
var shareware string
if !license.IsRegistered() {
shareware = " (shareware)"
}
ver := ui.NewLabel(ui.Label{
Text: fmt.Sprintf("v%s%s", branding.Version, shareware),
Font: balance.TitleScreenVersionFont,
})
ver.Compute(d.Engine)
s.labelVersion = ver
// Arrow Keys hint label (scroll the demo level).
s.labelHint = ui.NewLabel(ui.Label{
Text: "Hint: press the Arrow keys",
Font: render.Text{
Size: 16,
Color: render.Grey,
Shadow: render.Purple,
},
})
s.labelHint.Compute(d.Engine)
// "Update Available" button.
s.updateButton = ui.NewButton("Update Button", ui.NewLabel(ui.Label{
Text: "An update is available!",
Font: render.Text{
FontFilename: "DejaVuSans-Bold.ttf",
Size: 16,
Color: render.Blue,
Padding: 4,
},
}))
s.updateButton.Handle(ui.Click, func(ed ui.EventData) error {
native.OpenURL(s.updateInfo.DownloadURL)
return nil
})
s.updateButton.Compute(d.Engine)
s.updateButton.Hide()
s.Supervisor.Add(s.updateButton)
// Main UI button frame.
frame := ui.NewFrame("frame")
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s.frame = frame
var buttons = []struct {
Name string
If func() bool
Func func()
Style *style.Button
}{
{
Name: "Story Mode",
Func: func() {
if s.winLevelPacks == nil {
s.winLevelPacks = windows.NewLevelPackWindow(windows.LevelPack{
Supervisor: s.Supervisor,
Engine: d.Engine,
OnPlayLevel: func(lp levelpack.LevelPack, which levelpack.Level) {
if err := d.PlayFromLevelpack(lp, which); err != nil {
shmem.FlashError(err.Error())
}
},
OnCloseWindow: func() {
s.winLevelPacks.Hide()
},
})
}
s.winLevelPacks.MoveTo(render.Point{
X: (d.width / 2) - (s.winLevelPacks.Size().W / 2),
Y: (d.height / 2) - (s.winLevelPacks.Size().H / 2),
})
s.winLevelPacks.Show()
},
Style: &balance.ButtonBabyBlue,
},
{
Name: "Play a Level",
Func: d.GotoPlayMenu,
Style: &balance.ButtonBabyBlue,
},
{
Name: "New Drawing",
Func: d.GotoNewMenu,
Style: &balance.ButtonPink,
},
{
Name: "Edit Drawing",
Func: d.GotoLoadMenu,
Style: &balance.ButtonPink,
},
{
Name: "Settings",
Func: func() {
if s.winSettings == nil {
s.winSettings = d.MakeSettingsWindow(s.Supervisor)
}
s.winSettings.Show()
},
},
{
Name: "Register",
If: func() bool {
return !license.IsRegistered()
},
Func: func() {
if s.winRegister == nil {
cfg := windows.License{
Supervisor: s.Supervisor,
Engine: d.Engine,
OnCancel: func() {
s.winRegister.Hide()
},
}
cfg.OnLicensed = func() {
// License status has changed, reload the window!
if s.winRegister != nil {
s.winRegister.Hide()
}
s.winRegister = windows.MakeLicenseWindow(d.width, d.height, cfg)
}
cfg.OnLicensed()
}
s.winRegister.Show()
},
Style: &balance.ButtonPrimary,
},
}
for _, button := range buttons {
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if check := button.If; check != nil && !check() {
continue
}
button := button
btn := ui.NewButton(button.Name, ui.NewLabel(ui.Label{
Text: button.Name,
Font: balance.StatusFont,
}))
btn.Handle(ui.Click, func(ed ui.EventData) error {
button.Func()
return nil
})
if button.Style != nil {
btn.SetStyle(button.Style)
}
s.Supervisor.Add(btn)
frame.Pack(btn, ui.Pack{
Side: ui.N,
PadY: 8,
// Fill: true,
FillX: true,
})
}
// Check for update in the background.
go s.checkUpdate()
// Eager load the level in background, no time for load screen.
go func() {
if err := s.setupAsync(d); err != nil {
log.Error("MainScene.setupAsync: %s", err)
}
}()
// Trigger our "Window Resized" function so we can check if the
// layout needs to be switched to landscape mode for mobile.
s.Resized(d.width, d.height)
return nil
}
// setupAsync runs background tasks from setup, e.g. eager load
// chunks of the level for cache.
func (s *MainScene) setupAsync(d *Doodle) error {
loadscreen.PreloadAllChunkBitmaps(s.canvas.Chunker())
return nil
}
// checkUpdate checks for a version update and shows the button.
func (s *MainScene) checkUpdate() {
if shmem.OfflineMode {
log.Info("OfflineMode: skip updates check")
return
}
info, err := updater.Check()
if err != nil {
log.Error(err.Error())
return
}
if info.IsNewerVersionThan(branding.Version) {
s.updateInfo = info
s.updateButton.Show()
}
}
// SetupDemoLevel configures the wallpaper behind the New screen,
// which demos a title screen demo level.
func (s *MainScene) SetupDemoLevel(d *Doodle) error {
// Set up the background wallpaper canvas.
s.canvas = uix.NewCanvas(100, false)
s.canvas.Scrollable = true
s.canvas.Resize(render.Rect{
W: d.width,
H: d.height,
})
s.scripting = scripting.NewSupervisor()
s.canvas.SetScriptSupervisor(s.scripting)
// Title screen level to load.
if lvl, err := level.LoadFile(balance.DemoLevelName); err == nil {
s.canvas.LoadLevel(lvl)
s.canvas.InstallActors(lvl.Actors)
// Load all actor scripts.
if err := s.scripting.InstallScripts(lvl); err != nil {
log.Error("Error with title screen level scripts: %s", err)
}
// Run all actors scripts main function to start them off.
if err := s.canvas.InstallScripts(); err != nil {
log.Error("Error running actor main() functions: %s", err)
}
} else {
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log.Error("Error loading demo level %s: %s", balance.DemoLevelName, err)
}
return nil
}
// Loop the editor scene.
func (s *MainScene) Loop(d *Doodle, ev *event.State) error {
s.Supervisor.Loop(ev)
if err := s.scripting.Loop(); err != nil {
log.Error("MainScene.Loop: scripting.Loop: %s", err)
}
// Lazily scroll the canvas around, slowly.
s.LoopLazyScroll()
s.canvas.Loop(ev)
if ev.WindowResized {
w, h := d.Engine.WindowSize()
d.width = w
d.height = h
s.Resized(w, h)
}
return nil
}
// Resized the app window.
func (s *MainScene) Resized(width, height int) {
log.Info("Resized to %dx%d", width, height)
// If the height is not tall enough for the menu, switch to the horizontal layout.
if height < balance.TitleScreenResponsiveHeight {
log.Error("Switch to landscape mode")
s.landscapeMode = true
} else {
s.landscapeMode = false
}
s.canvas.Resize(render.Rect{
W: width,
H: height,
})
}
// Move things into position for the main menu. This function arranges
// the Title, Subtitle, Buttons, etc. into screen relative positions every
// tick. This function sets their 'default' values, but if the window is
// not tall enough and needs the landscape orientation, positionMenuLandscape()
// will override these defaults.
func (s *MainScene) positionMenuPortrait(d *Doodle) {
// App title label.
s.labelTitle.MoveTo(render.Point{
X: (d.width / 2) - (s.labelTitle.Size().W / 2),
Y: 120,
})
// App subtitle label (byline).
s.labelSubtitle.MoveTo(render.Point{
X: (d.width / 2) - (s.labelSubtitle.Size().W / 2),
Y: s.labelTitle.Point().Y + s.labelTitle.Size().H + 8,
})
// Version label
s.labelVersion.MoveTo(render.Point{
X: (d.width) - (s.labelVersion.Size().W) - 20,
Y: 20,
})
// Hint label.
s.labelHint.MoveTo(render.Point{
X: (d.width / 2) - (s.labelHint.Size().W / 2),
Y: d.height - s.labelHint.Size().H - 32,
})
// Update button.
s.updateButton.MoveTo(render.Point{
X: 24,
Y: d.height - s.updateButton.Size().H - 24,
})
// Button frame.
s.frame.MoveTo(render.Point{
X: (d.width / 2) - (s.frame.Size().W / 2),
Y: 260,
})
}
func (s *MainScene) positionMenuLandscape(d *Doodle) {
s.positionMenuPortrait(d)
var (
col1 = render.Rect{
X: 0,
Y: 0,
W: d.width / 2,
H: d.height,
}
col2 = render.Rect{
X: d.width,
Y: 0,
W: d.width - col1.W,
H: d.height,
}
)
// Title and subtitle move to the left.
s.labelTitle.MoveTo(render.Point{
X: (col1.W / 2) - (s.labelTitle.Size().W / 2),
Y: s.labelTitle.Point().Y,
})
s.labelSubtitle.MoveTo(render.Point{
X: (col1.W / 2) - (s.labelSubtitle.Size().W / 2),
Y: s.labelTitle.Point().Y + s.labelTitle.Size().H + 8,
})
// Button frame to the right.
s.frame.MoveTo(render.Point{
X: (col2.X+col2.W)/2 - (s.frame.Size().W / 2),
Y: (d.height / 2) - (s.frame.Size().H / 2),
})
}
// LoopLazyScroll gently scrolls the title screen demo level, called each Loop.
func (s *MainScene) LoopLazyScroll() {
// The v1 basic sauce algorithm:
// 1. We scroll diagonally downwards and rightwards.
// 2. When we scroll downwards far enough, we change direction.
// Make a zigzag pattern.
// 3. When we reach the right bound of the level
// OR some max number of px into an unbounded level:
// enter a simple ball bouncing mode like a screensaver.
var (
zigzagMaxHeight = 512
maxScrollX = zigzagMaxHeight * 2
lastScrollValue = s.lazyScrollLastValue
currentScroll = s.canvas.Scroll
)
// So we have two states:
// - Zigzag state (default)
// - Bounce state (when we hit a wall)
if !s.lazyScrollBounce {
// Zigzag state.
s.lazyScrollTrajectory = render.Point{
X: -1, // down and right
Y: -1,
}
// When we've gone far enough X, it's also far enough Y.
if currentScroll.X < -zigzagMaxHeight {
s.lazyScrollTrajectory.Y = 1 // go back up
}
// Have we gotten stuck in a corner? (ending the zigzag phase, for bounded levels)
if currentScroll.X < 0 && (currentScroll == lastScrollValue) || currentScroll.X < -maxScrollX {
log.Debug("LoopLazyScroll: Ending zigzag phase, enter bounce phase")
s.lazyScrollBounce = true
s.lazyScrollTrajectory = render.Point{
X: -1,
Y: -1,
}
}
} else {
// Lazy bounce algorithm.
if currentScroll.Y == lastScrollValue.Y {
log.Debug("LoopLazyScroll: Hit a floor/ceiling")
s.lazyScrollTrajectory.Y = -s.lazyScrollTrajectory.Y
}
if currentScroll.X == lastScrollValue.X {
log.Debug("LoopLazyScroll: Hit the side of the map!")
s.lazyScrollTrajectory.X = -s.lazyScrollTrajectory.X
}
}
// Check the scroll.
s.lazyScrollLastValue = currentScroll
s.canvas.ScrollBy(s.lazyScrollTrajectory)
}
// Draw the pixels on this frame.
func (s *MainScene) Draw(d *Doodle) error {
// Clear the canvas and fill it with white.
d.Engine.Clear(render.White)
s.canvas.Present(d.Engine, render.Origin)
// Draw a sheen over the level for clarity.
d.Engine.DrawBox(render.RGBA(255, 255, 254, 96), render.Rect{
X: 0,
Y: 0,
W: d.width,
H: d.height,
})
// Draw out bounding boxes.
if DebugCollision {
for _, actor := range s.canvas.Actors() {
d.DrawCollisionBox(s.canvas, actor)
}
}
// Arrange the main widgets by Portrait or Landscape mode.
if s.landscapeMode {
s.positionMenuLandscape(d)
} else {
s.positionMenuPortrait(d)
}
// App title label.
s.labelTitle.Present(d.Engine, s.labelTitle.Point())
// App subtitle label (byline).
s.labelSubtitle.Present(d.Engine, s.labelSubtitle.Point())
// Version label
s.labelVersion.Present(d.Engine, s.labelVersion.Point())
// Hint label.
s.labelHint.Present(d.Engine, s.labelHint.Point())
// Update button.
s.updateButton.Present(d.Engine, s.updateButton.Point())
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s.frame.Compute(d.Engine)
s.frame.Present(d.Engine, s.frame.Point())
// Present supervised windows.
s.Supervisor.Present(d.Engine)
return nil
}
// Destroy the scene.
func (s *MainScene) Destroy() error {
return nil
}