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Add audio selection

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This commit is contained in:
NeilClack
2026-07-29 14:46:11 -05:00
parent 72f20d74a5
commit 6dda462884
4 changed files with 274 additions and 100 deletions
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flake.nix
+3 -11
View File
@@ -18,7 +18,7 @@
let
pkgs = import nixpkgs {
inherit system;
config.allowUnfreePredicate = pkg: (nixpkgs.lib.getName pkg) == "rhemawave";
config.allowUnfreePredicate = pkg: (nixpkgs.lib.getName pkg) == "radiantwave";
};
buildInputs = with pkgs; [
@@ -27,8 +27,8 @@
SDL2_image
SDL2_mixer
sqlite
dbus
] ++ pkgs.lib.optionals pkgs.stdenv.isLinux [
dbus
libGL
wayland
wayland-protocols
@@ -36,15 +36,7 @@
libdecor
libx11
libxext
] ++ pkgs.lib.optionals pkgs.stdenv.isDarwin (with pkgs.darwin.apple_sdk.frameworks; [
OpenGL
CoreAudio
CoreFoundation
CoreServices
ForceFeedback
IOKit
AppKit
]);
]; # Darwin: system SDK provides OpenGL, AppKit, etc. automatically
nativeBuildInputs = with pkgs; [
go
internal/page/AudioOptions.go
+199 -88
View File
@@ -15,11 +15,8 @@ import (
"rhemawavetech.com/rhemawave/internal/shaderManager"
)
// focusToggle is the sentinel focusState value meaning the audio on/off toggle
// row has keyboard focus. Audio-file indices (0..n-1) are used for everything below.
const focusToggle = -1
// AudioFileList is kept as the canonical seed data for the audio_files table.
var AudioFileList = []db.AudioFile{
{ID: 14, Name: "Original Audio", Path: "OriginalAudio.wav", Selected: false, Order: 1},
{ID: 1, Name: "174 Hz", Path: "174Hz.wav", Selected: false, Order: 2},
@@ -40,28 +37,22 @@ var AudioFileList = []db.AudioFile{
const triangleSize = float32(16)
type AudioOptions struct {
// Page Attributes
Base
font *fontManager.FontEntry
textShader *shaderManager.Shader
solidShader *shaderManager.Shader
// Page Textures
title StringItem
prompt StringItem
// Layout
verticalMargin int32
ItemScale float32
// Audio toggle
AudioStatusToggle StringItem
// Audio file list — index 0 = "Dynamic Audio", index 1+ = AudioFileList entries
audioFileTextures []StringItem
selectedFileIndex int // which item is currently selected (highlights green)
selectedFileIndex int
// Volume row
VolumeLabel StringItem
volumePercent StringItem
volumeBarX int32
@@ -69,25 +60,46 @@ type AudioOptions struct {
volumeBarW int32
volumeBarH int32
// Triangle cursor
triVAO uint32
triVBO uint32
triX float32
triCenterY float32
spinElapsed float32
// Focus: focusToggle (-1) = toggle row, 0..n-1 = audio file list item
focusState int
}
// ── Init ──────────────────────────────────────────────────────────────────────
// Section header
sectionHeader StringItem
// Scrolling
scrollOffset int
maxVisible int
listItemMargin int32
listAreaTop int32
listAreaBottom int32
listItemHeight int32
scrollTrackWidth int32
scrollTrackX int32
scrollTrackY int32
scrollTrackH int32
// Selection dot
dotSize float32
// List left-alignment X (same for all items)
listLeftX int32
}
func (p *AudioOptions) Init(ctx *PageCtx) error {
var err error
p.verticalMargin = int32(20)
p.listItemMargin = 6
p.focusState = focusToggle
p.scrollOffset = 0
p.dotSize = 8.0
p.scrollTrackWidth = 30
p.scrollTrackX = p.ScreenWidth - p.scrollTrackWidth
// Font
fm := fontManager.Get()
font, ok := fm.GetFont("SpaceMonoNerdFont-Regular")
if !ok {
@@ -95,7 +107,6 @@ func (p *AudioOptions) Init(ctx *PageCtx) error {
}
p.font = font
// Shaders
sm := shaderManager.Get()
p.textShader, ok = sm.Get("text")
if !ok {
@@ -119,14 +130,12 @@ func (p *AudioOptions) Init(ctx *PageCtx) error {
titleScale := float32(64) / float32(baseFontSize)
p.ItemScale = float32(32) / float32(baseFontSize)
// Title
p.title, err = NewStringItem("Audio Options", p.font, colors.White)
if err != nil {
return fmt.Errorf("creating title: %w", err)
}
p.title.Scale(titleScale)
// Prompt
p.prompt, err = NewStringItem(
"Enter to select -- Up/Down to navigate -- Left/Right to change volume -- Backspace to go back",
p.font, colors.White,
@@ -136,7 +145,6 @@ func (p *AudioOptions) Init(ctx *PageCtx) error {
}
p.prompt.Scale(p.ItemScale)
// Volume row
p.VolumeLabel, err = NewStringItem("Volume", p.font, colors.White)
if err != nil {
return fmt.Errorf("creating volume label: %w", err)
@@ -146,20 +154,16 @@ func (p *AudioOptions) Init(ctx *PageCtx) error {
logger.Error("failed to create VolumePercentItem in AudioOptions.Init()")
}
// Audio toggle
if err = p.CreateAudioStatusItem(); err != nil {
logger.Error("failed to create AudioStatusItem in AudioOptions.Init()")
}
// Make sure the audio_files table is populated.
if err = p.seedAudioFiles(); err != nil {
logger.Error("failed to seed audio files: %v", err)
}
// Build the audio file list textures: "Dynamic Audio" + AudioFileList
p.buildAudioFileList()
// Triangle cursor VAO/VBO — stride is vec2 only, no tex coords
triVerts := []float32{
0.5, 0.0,
-0.5, 0.5,
@@ -175,20 +179,22 @@ func (p *AudioOptions) Init(ctx *PageCtx) error {
gl.BindBuffer(gl.ARRAY_BUFFER, 0)
gl.BindVertexArray(0)
p.sectionHeader, err = NewStringItem("Audio Track", p.font, colors.Silver)
if err != nil {
return fmt.Errorf("creating section header: %w", err)
}
p.sectionHeader.Scale(p.ItemScale * 1.2)
p.layout()
return nil
}
// buildAudioFileList creates textures for the audio file list.
// Index 0 = "Dynamic Audio", index 1+ = AudioFileList entries.
func (p *AudioOptions) buildAudioFileList() {
// Clear old textures
for i := range p.audioFileTextures {
gl.DeleteTextures(1, &p.audioFileTextures[i].ID)
}
p.audioFileTextures = nil
// "Dynamic Audio" entry at index 0
dynamicItem, err := NewStringItem("Dynamic Audio", p.font, colors.White)
if err != nil {
logger.Error("failed to create Dynamic Audio string item: %v", err)
@@ -197,7 +203,6 @@ func (p *AudioOptions) buildAudioFileList() {
p.audioFileTextures = append(p.audioFileTextures, dynamicItem)
}
// AudioFileList entries at index 1+
for _, af := range AudioFileList {
item, err := NewStringItem(af.Name, p.font, colors.White)
if err != nil {
@@ -208,15 +213,13 @@ func (p *AudioOptions) buildAudioFileList() {
p.audioFileTextures = append(p.audioFileTextures, item)
}
// Determine which item is currently selected
p.updateSelectedIndex()
}
// updateSelectedIndex sets selectedFileIndex based on the DB state.
func (p *AudioOptions) updateSelectedIndex() {
config, err := db.GetConfig(p.Context.DbPtr)
if err != nil {
p.selectedFileIndex = 0 // default to Dynamic Audio
p.selectedFileIndex = 0
return
}
@@ -225,27 +228,22 @@ func (p *AudioOptions) updateSelectedIndex() {
return
}
// Find the audio file with Selected = true
var selected db.AudioFile
if err := p.Context.DbPtr.Where("selected = ?", true).First(&selected).Error; err != nil {
// No selection found — default to Dynamic Audio
p.selectedFileIndex = 0
return
}
// Map the selected AudioFile ID to its index in the list
for i, af := range AudioFileList {
if af.ID == selected.ID {
p.selectedFileIndex = i + 1 // +1 because index 0 is "Dynamic Audio"
p.selectedFileIndex = i + 1
return
}
}
// Fallback — file not in list
p.selectedFileIndex = 0
}
// seedAudioFiles ensures the audio_files table has its default rows.
func (p *AudioOptions) seedAudioFiles() error {
var existing []db.AudioFile
if err := p.Context.DbPtr.Find(&existing).Error; err != nil {
@@ -257,8 +255,6 @@ func (p *AudioOptions) seedAudioFiles() error {
return nil
}
// ── Audio status toggle ───────────────────────────────────────────────────────
func (p *AudioOptions) CreateAudioStatusItem() error {
config, err := db.GetConfig(p.Context.DbPtr)
if err != nil {
@@ -280,9 +276,6 @@ func (p *AudioOptions) CreateAudioStatusItem() error {
return nil
}
// ── Audio file selection ─────────────────────────────────────────────────────
// selectAudioFile handles the user pressing Enter on an audio file list item.
func (p *AudioOptions) selectAudioFile(index int) {
config, err := db.GetConfig(p.Context.DbPtr)
if err != nil {
@@ -290,18 +283,13 @@ func (p *AudioOptions) selectAudioFile(index int) {
}
if index == 0 {
// "Dynamic Audio" selected
config.DynamicAudio = true
// Clear all file selections
p.Context.DbPtr.Model(&db.AudioFile{}).Where("1 = 1").Update("selected", false)
} else {
// Specific audio file selected
config.DynamicAudio = false
fileIndex := index - 1 // offset for "Dynamic Audio" entry
fileIndex := index - 1
if fileIndex >= 0 && fileIndex < len(AudioFileList) {
// Clear all selections first
p.Context.DbPtr.Model(&db.AudioFile{}).Where("1 = 1").Update("selected", false)
// Select the chosen file
p.Context.DbPtr.Model(&db.AudioFile{}).Where("id = ?", AudioFileList[fileIndex].ID).Update("selected", true)
}
}
@@ -313,8 +301,6 @@ func (p *AudioOptions) selectAudioFile(index int) {
p.selectedFileIndex = index
}
// ── Volume ────────────────────────────────────────────────────────────────────
func (p *AudioOptions) CreateVolumePercentItem() error {
if p.volumePercent.ID != 0 {
gl.DeleteTextures(1, &p.volumePercent.ID)
@@ -358,8 +344,6 @@ func (p *AudioOptions) UpdateVolume(level int) {
p.volumePercent.Y = p.volumeBarY + (p.volumeBarH-p.volumePercent.H)/2
}
// ── Layout ────────────────────────────────────────────────────────────────────
func (p *AudioOptions) layout() {
config, err := db.GetConfig(p.Context.DbPtr)
if err != nil {
@@ -392,25 +376,72 @@ func (p *AudioOptions) layout() {
p.volumePercent.X = barX + barW + gap
p.volumePercent.Y = barY + (barH-p.volumePercent.H)/2
// Audio toggle — centred below the volume row
// Audio toggle
p.AudioStatusToggle.X = p.ScreenCenterX - p.AudioStatusToggle.W/2
p.AudioStatusToggle.Y = barY - p.verticalMargin*3 - p.AudioStatusToggle.H
// Audio file list — each item centred and stacked below the toggle
nextY := p.AudioStatusToggle.Y - p.verticalMargin
for i := range p.audioFileTextures {
item := &p.audioFileTextures[i]
item.X = p.ScreenCenterX - item.W/2
item.Y = nextY - item.H
nextY = item.Y - p.verticalMargin
// Section header — sits above the toggle, marks the start of the audio track list
p.sectionHeader.X = p.ScreenCenterX - p.sectionHeader.W/2
p.sectionHeader.Y = p.AudioStatusToggle.Y - p.verticalMargin - p.sectionHeader.H
// Scrollable list area boundaries
p.listItemHeight = p.audioFileTextures[0].H
listTop := p.sectionHeader.Y - p.listItemMargin
listBottomMargin := int32(12)
// Available height for the list
listH := listTop - listBottomMargin
if listH < p.listItemHeight {
listH = p.listItemHeight
}
// Reposition the triangle cursor for whatever row currently has focus
p.listAreaTop = listTop
p.listAreaBottom = listBottomMargin
// How many items fit
itemStep := p.listItemHeight + p.listItemMargin
n := len(p.audioFileTextures)
p.maxVisible = int(listH / itemStep)
if p.maxVisible < 1 {
p.maxVisible = 1
}
if p.maxVisible > n {
p.maxVisible = n
}
// Compute left alignment: find the widest item to center the block
var maxItemW int32
for i := range p.audioFileTextures {
if p.audioFileTextures[i].W > maxItemW {
maxItemW = p.audioFileTextures[i].W
}
}
p.listLeftX = p.ScreenCenterX - maxItemW/2
// Position each item — scrollOffset shifts the whole list up/down
firstVisibleY := p.listAreaTop - p.listItemHeight
for i := range p.audioFileTextures {
item := &p.audioFileTextures[i]
item.X = p.listLeftX
item.Y = firstVisibleY - int32(i-p.scrollOffset)*itemStep
}
// Clamp scroll offset so we never show empty space
maxScroll := n - p.maxVisible
if maxScroll < 0 {
maxScroll = 0
}
if p.scrollOffset > maxScroll {
p.scrollOffset = maxScroll
}
// Scrollbar track position
p.scrollTrackY = p.listAreaBottom
p.scrollTrackH = p.listAreaTop - p.listAreaBottom
p.updateCursorPosition()
}
// updateCursorPosition moves triX / triCenterY to sit just left of the
// focused row. Call this any time focusState changes or layout() reruns.
func (p *AudioOptions) updateCursorPosition() {
cursorGap := int32(12)
@@ -428,8 +459,6 @@ func (p *AudioOptions) updateCursorPosition() {
p.triCenterY = float32(item.Y) + float32(item.H)/2
}
// ── Toggle ────────────────────────────────────────────────────────────────────
func (p *AudioOptions) ToggleAudio() {
config, err := db.GetConfig(p.Context.DbPtr)
if err != nil {
@@ -442,32 +471,38 @@ func (p *AudioOptions) ToggleAudio() {
p.layout()
}
// ── Events ────────────────────────────────────────────────────────────────────
func (p *AudioOptions) HandleEvent(event *sdl.Event) error {
e, ok := (*event).(*sdl.KeyboardEvent)
if !ok || e.Type != sdl.KEYDOWN {
return nil
}
n := len(p.audioFileTextures)
switch e.Keysym.Sym {
case sdl.K_RETURN:
if p.focusState == focusToggle {
p.ToggleAudio()
} else if p.focusState >= 0 && p.focusState < len(p.audioFileTextures) {
} else if p.focusState >= 0 && p.focusState < n {
p.selectAudioFile(p.focusState)
p.updateCursorPosition()
}
case sdl.K_DOWN:
if p.focusState == focusToggle {
if len(p.audioFileTextures) > 0 {
if n > 0 {
p.focusState = 0
p.scrollOffset = 0
p.layout()
}
} else if p.focusState < n-1 {
p.focusState++
if p.focusState >= p.scrollOffset+p.maxVisible {
p.scrollOffset++
p.layout()
} else {
p.updateCursorPosition()
}
} else if p.focusState < len(p.audioFileTextures)-1 {
p.focusState++
p.updateCursorPosition()
}
case sdl.K_UP:
@@ -476,7 +511,35 @@ func (p *AudioOptions) HandleEvent(event *sdl.Event) error {
p.updateCursorPosition()
} else if p.focusState > 0 {
p.focusState--
p.updateCursorPosition()
if p.focusState < p.scrollOffset {
p.scrollOffset--
p.layout()
} else {
p.updateCursorPosition()
}
}
case sdl.K_PAGEUP:
if p.focusState > 0 {
p.focusState -= p.maxVisible - 1
if p.focusState < 0 {
p.focusState = 0
}
p.scrollOffset = p.focusState
p.layout()
}
case sdl.K_PAGEDOWN:
if p.focusState < n-1 {
p.focusState += p.maxVisible - 1
if p.focusState >= n {
p.focusState = n - 1
}
p.scrollOffset = p.focusState - p.maxVisible + 1
if p.scrollOffset < 0 {
p.scrollOffset = 0
}
p.layout()
}
case sdl.K_RIGHT:
@@ -492,8 +555,6 @@ func (p *AudioOptions) HandleEvent(event *sdl.Event) error {
return nil
}
// ── Update ────────────────────────────────────────────────────────────────────
func (p *AudioOptions) Update(dt float32) error {
p.spinElapsed += dt
if p.spinElapsed >= 1.0 {
@@ -502,8 +563,6 @@ func (p *AudioOptions) Update(dt float32) error {
return nil
}
// ── Render helpers ────────────────────────────────────────────────────────────
func (p *AudioOptions) renderVolumeBar() error {
config, err := db.GetConfig(p.Context.DbPtr)
if err != nil {
@@ -543,7 +602,6 @@ func (p *AudioOptions) renderVolumeBar() error {
return nil
}
// renderCursor draws the spinning triangle cursor next to the focused row.
func (p *AudioOptions) renderCursor() error {
scaleY := float32(math.Cos(2 * math.Pi * float64(p.spinElapsed)))
@@ -570,7 +628,33 @@ func (p *AudioOptions) renderCursor() error {
return nil
}
// ── Render ────────────────────────────────────────────────────────────────────
func (p *AudioOptions) renderScrollbar() {
n := len(p.audioFileTextures)
if n <= p.maxVisible {
return
}
trackColor := sdl.Color{R: 255, G: 255, B: 255, A: 30}
thumbColor := sdl.Color{R: 255, G: 255, B: 255, A: 100}
p.RenderSolidColorQuad(p.solidShader,
mgl32.Vec2{float32(p.scrollTrackX), float32(p.scrollTrackY)},
mgl32.Vec2{float32(p.scrollTrackWidth), float32(p.scrollTrackH)},
trackColor)
visibleRatio := float32(p.maxVisible) / float32(n)
scrollRatio := float32(p.scrollOffset) / float32(n)
thumbHeight := float32(p.scrollTrackH) * visibleRatio
if thumbHeight < 20 {
thumbHeight = 20
}
thumbY := float32(p.scrollTrackY) + float32(p.scrollTrackH)*scrollRatio
p.RenderSolidColorQuad(p.solidShader,
mgl32.Vec2{float32(p.scrollTrackX + 2), thumbY},
mgl32.Vec2{float32(p.scrollTrackWidth - 4), thumbHeight},
thumbColor)
}
func (p *AudioOptions) Render() error {
if err := p.RenderTexture(p.textShader, p.title.ID, p.title.Position(), p.title.RawDimensions(), p.title.Color); err != nil {
@@ -580,7 +664,6 @@ func (p *AudioOptions) Render() error {
return fmt.Errorf("render prompt: %w", err)
}
// Volume row
if err := p.RenderTexture(p.textShader, p.VolumeLabel.ID, p.VolumeLabel.Position(), p.VolumeLabel.RawDimensions(), p.VolumeLabel.Color); err != nil {
return fmt.Errorf("render volume label: %w", err)
}
@@ -591,23 +674,52 @@ func (p *AudioOptions) Render() error {
return fmt.Errorf("render volume percent: %w", err)
}
// Toggle
if err := p.RenderTexture(p.textShader, p.AudioStatusToggle.ID, p.AudioStatusToggle.Position(), p.AudioStatusToggle.RawDimensions(), p.AudioStatusToggle.Color); err != nil {
return fmt.Errorf("render audio toggle: %w", err)
}
// Audio file list
for i := range p.audioFileTextures {
// Section header
p.RenderTexture(p.textShader, p.sectionHeader.ID, p.sectionHeader.Position(), p.sectionHeader.RawDimensions(), p.sectionHeader.Color)
// List background
listBgColor := sdl.Color{R: 255, G: 255, B: 255, A: 12}
bgPad := int32(16)
bgLeft := float32(p.listLeftX - bgPad)
bgTop := float32(p.listAreaBottom)
bgRight := float32(p.scrollTrackX)
bgBottom := float32(p.listAreaTop)
p.RenderSolidColorQuad(p.solidShader,
mgl32.Vec2{bgLeft, bgTop},
mgl32.Vec2{bgRight - bgLeft, bgBottom - bgTop},
listBgColor)
// Audio file list (visible window only)
for i := p.scrollOffset; i < p.scrollOffset+p.maxVisible && i < len(p.audioFileTextures); i++ {
item := &p.audioFileTextures[i]
color := colors.White
clr := colors.White
if i == p.selectedFileIndex {
color = colors.Green
clr = colors.Green
}
if err := p.RenderTexture(p.textShader, item.ID, item.Position(), item.RawDimensions(), color); err != nil {
if err := p.RenderTexture(p.textShader, item.ID, item.Position(), item.RawDimensions(), clr); err != nil {
return fmt.Errorf("render audio file %d: %w", i, err)
}
// Selection dot — small filled circle left of the item name
if i == p.selectedFileIndex {
dotX := float32(item.X) - p.dotSize - 6
dotY := float32(item.Y) + float32(item.H)/2 - p.dotSize/2
p.RenderSolidColorQuad(p.solidShader,
mgl32.Vec2{dotX, dotY},
mgl32.Vec2{p.dotSize, p.dotSize},
colors.Green)
}
}
// Scrollbar
p.renderScrollbar()
// Spinning triangle cursor — always on top
if err := p.renderCursor(); err != nil {
return fmt.Errorf("render cursor: %w", err)
@@ -616,14 +728,13 @@ func (p *AudioOptions) Render() error {
return nil
}
// ── Destroy ───────────────────────────────────────────────────────────────────
func (p *AudioOptions) Destroy() error {
gl.DeleteTextures(1, &p.title.ID)
gl.DeleteTextures(1, &p.prompt.ID)
gl.DeleteTextures(1, &p.VolumeLabel.ID)
gl.DeleteTextures(1, &p.volumePercent.ID)
gl.DeleteTextures(1, &p.AudioStatusToggle.ID)
gl.DeleteTextures(1, &p.sectionHeader.ID)
for i := range p.audioFileTextures {
gl.DeleteTextures(1, &p.audioFileTextures[i].ID)
}
internal/page/home.go
+1 -1
View File
@@ -13,7 +13,7 @@ import (
"rhemawavetech.com/rhemawave/internal/shaderManager"
)
var GitVersion = "07112026-1710"
var GitVersion = "07292026_1445"
type Home struct {
Base
scripts/setup-debian.sh
Executable
+71
View File
@@ -0,0 +1,71 @@
#!/usr/bin/env bash
set -euo pipefail
echo "=== Debian dev environment setup ==="
# Update package index
sudo apt-get update
# --- Core dev & build tools ---
sudo apt-get install -y \
curl \
g++ \
gcc \
git \
make \
cmake \
ninja-build \
pkg-config
# --- SDL2 and all official extension libraries ---
sudo apt-get install -y \
libsdl2-dev \
libsdl2-mixer-dev \
libsdl2-net-dev \
libsdl2-ttf-dev \
libsdl2-image-dev \
libsdl2-gfx-dev
# --- SDL3 (available in Debian testing/sid, but not bookworm) ---
# If this fails, SDL3 isn't in your Debian release yet.
# See https://github.com/libsdl-org/SDL for building from source.
sudo apt-get install -y libsdl3-dev || echo "SDL3 not found in apt (expected on older Debian releases)"
# --- Go ---
if ! command -v go &>/dev/null; then
echo "Installing Go..."
GO_VERSION=$(curl -sL https://go.dev/VERSION?m=text | head -1)
GO_TAR="${GO_VERSION}.linux-amd64.tar.gz"
curl -sLO "https://go.dev/dl/${GO_TAR}"
sudo rm -rf /usr/local/go
sudo tar -C /usr/local -xzf "${GO_TAR}"
rm "${GO_TAR}"
export PATH=$PATH:/usr/local/go/bin
if ! grep -q '/usr/local/go/bin' "$HOME/.profile" 2>/dev/null; then
echo 'export PATH=$PATH:/usr/local/go/bin' >> "$HOME/.profile"
fi
else
echo "Go already installed: $(go version)"
fi
# --- Nix (multi-user install) ---
if ! command -v nix &>/dev/null; then
echo "Installing Nix..."
sh <(curl -sL https://nixos.org/nix/install) --daemon
echo "Nix installed. You may need to log out and back in, or run:"
echo " . /nix/var/nix/profiles/default/etc/profile.d/nix-daemon.sh"
else
echo "Nix already installed: $(nix --version)"
fi
echo ""
echo "=== Setup complete ==="
echo "Installed: gcc, g++, make, cmake, ninja, pkg-config"
echo "Installed: SDL2 + mixer/net/ttf/image/gfx"
echo "Installed: Go $(go version 2>/dev/null || echo '(check PATH)')"
echo "Installed: Nix $(nix --version 2>/dev/null || echo '(restart shell)')"
if dpkg -l libsdl3-dev &>/dev/null; then
echo "Installed: SDL3"
else
echo "SDL3: not in apt for this release (install from https://github.com/libsdl-org/SDL)"
fi