ludic/examples/menu.ludic
Orkuncakilkaya a3a1e4d160 Language: named colors, namespaced Screen/Input/Random/Map API, named args
An opinionated, game-facing surface for the language:
- Color.<Name>: 221 named colors resolved to 0xRRGGBB at compile time
  (selfhost/emit_color.ludic).
- Namespaced builtins Screen.* / Input.key / Random.* / Map.*, so calls read as
  subject.action; present() -> Screen.show(), clear -> Screen.clear,
  fill_rect -> Screen.fill_rectangle, etc.
- Named arguments, e.g. Screen.fill_rectangle(x:, y:, width:, height:, color:),
  reordered to the callee's parameters at emit time.
- machine/become can run over a named program-scope var, not just a register.
- Migrate examples off numeric registers to named vars; snake/menu/chronorift
  render byte-identical to the goldens and the bootstrap fixpoint is preserved.
- Regenerate the checked-in seed (selfhost/ludicc.seed.ll).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-08-29 16:05:55 +03:00

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# menu.ludic — a retained-UI title screen. The UI is declared as DATA (the `ui`
# block); the engine lays it out (stacked panel, padding/gap/alignment), draws
# it (background, TrueType labels, focusable buttons), and routes keyboard focus
# and activation. The game only loads a font, opens the UI, and reads clicks.
program Menu {
var title_font: int = 0
ui MainMenu {
panel id: Root w: 288 pad: 16 gap: 6 bg: 0x1a1a2c border: 0x4a4a72 skin: "assets/ui/panel.png" inset: 10 align: center {
label text: "CHRONO RIFT" font: title_font size: 26 fg: 0xffe060 align: center
label text: "a Ludic retained-UI demo" font: title_font size: 14 fg: 0x9aa0c8 align: center
spacer h: 4
button id: NewGame text: "New Game" font: title_font size: 16 w: 236
button id: Continue text: "Continue" font: title_font size: 16 w: 236
button id: Options text: "Options" font: title_font size: 16 w: 236
button id: Quit text: "Quit" font: title_font size: 16 w: 236
}
}
handler Boot phase Start {
title_font = font_load("/System/Library/Fonts/Supplemental/Arial.ttf")
ui_build()
ui_open(UI_MainMenu)
}
handler Nav phase Update {
ui_tick(Input.key())
if ui_clicked(UI_NewGame) { ui_set_text(UI_NewGame, "Starting...") }
if ui_clicked(UI_Continue) { ui_set_text(UI_Continue, "No save") }
if ui_clicked(UI_Options) { ui_set_text(UI_Options, "Soon (TM)") }
if ui_clicked(UI_Quit) { quit() }
}
handler Draw phase Render {
Screen.clear(0x0e0e16)
ui_render()
Screen.show()
}
}