Orkuncakilkaya
1dad96102a
A game no longer writes a host:
- The runtime reads Input itself: focus and keyboard navigation (Tab, arrows, Enter/Space,
autofocus), the pointer (hover, :active, click on release, drag), and scroll boxes with the
wheel, a draggable scrollbar, clipping and scroll-into-view.
- HTML's controls are built in (button, checkbox, radio, range, select, text, key capture), made
of plain parts a stylesheet styles, each reporting with on-change and event.value.
- ludic.ui/render3d.ludic draws with render3d's overlay: textures, named atlases (icon:NAME),
nine-slice border-image, rounded rects and rings, clipping, and a scale.
- Hooks for the program's language, sounds and clock (ui_translator, ui_sounds, ui_clock).
- ui_dev: hot reload, errors on screen, LUDIC_UI_DUMP.
- CSS:
- colours as #rgb / #rrggbbaa / rgb() / rgba() / names;
- border-radius and outline (following the radius), box-shadow, background-image and a tinted
border-image;
- group opacity, @keyframes / animation, transition;
- :focus, :focus-visible and :focus-within.
- HTML mixed content, and boolean attributes.
- render3d gains tex_width / tex_height, and the XML reader keeps text runs in order.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
48 lines
1.5 KiB
Text
48 lines
1.5 KiB
Text
# draw_order.ludic - painting order, and clipping that nests
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var fr_clips: []float = new []float
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function fr_clip_push(x: float, y: float, w: float, h: float) -> void {
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var x0 = x
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var y0 = y
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var x1 = x + w
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var y1 = y + h
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let n = len(fr_clips)
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if n >= 4 {
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x0 = Math.max(x0, fr_clips[n - 4])
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y0 = Math.max(y0, fr_clips[n - 3])
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x1 = Math.min(x1, fr_clips[n - 2])
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y1 = Math.min(y1, fr_clips[n - 1])
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}
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push(fr_clips, x0)
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push(fr_clips, y0)
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push(fr_clips, x1)
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push(fr_clips, y1)
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ui_be.clip(x0, y0, Math.max(x1 - x0, 0.0), Math.max(y1 - y0, 0.0))
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}
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function fr_clip_pop() -> void {
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var keep = new []float
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for i in 0 .. len(fr_clips) - 4 { push(keep, fr_clips[i]) }
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fr_clips = keep
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let n = len(fr_clips)
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if n >= 4 { ui_be.clip(fr_clips[n - 4], fr_clips[n - 3], fr_clips[n - 2] - fr_clips[n - 4], fr_clips[n - 1] - fr_clips[n - 3]) } else if ui_be.unclip != null { ui_be.unclip() }
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}
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# the children in painting order: those in the flow first, then positioned ones by z-index
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function fr_children(n: UiNode) -> void {
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var positioned = 0
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for i in 0 .. len(n.children) {
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if n.children[i].pos == 0 { fr_draw(n.children[i]) } else { positioned += 1 }
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}
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if positioned == 0 { return }
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var lo = 1000000
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var hi = -1000000
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for i in 0 .. len(n.children) {
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if n.children[i].pos != 0 {
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lo = Math.min(lo, n.children[i].z)
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hi = Math.max(hi, n.children[i].z)
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}
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}
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for z in lo .. hi + 1 {
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for i in 0 .. len(n.children) {
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if n.children[i].pos != 0 and n.children[i].z == z { fr_draw(n.children[i]) }
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}
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}
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}
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