Optimize PortMaster low-memory profile

scripts/build_portmaster.sh

@@ -5,6 +5,7 @@ set -euo pipefail
 readonly SCRIPT_DIR="$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" && pwd)"
 readonly PROJECT_ROOT="$(cd -- "${SCRIPT_DIR}/.." && pwd)"
 readonly TEMPLATE_ROOT="${SCRIPT_DIR}/portmaster"
+readonly ASSET_PROFILE_SCRIPT="${SCRIPT_DIR}/prepare_portmaster_assets.sh"
 readonly GODOT_BIN="${GODOT_BIN:-godot}"
 
 PACKAGE_ONLY=0
@@ -86,7 +87,7 @@ if [[ "${NETFISHING_ALLOW_DIRTY_RELEASE:-0}" != "1" ]]; then
   fi
 fi
 
-for command_name in git file zip unzip sha256sum; do
+for command_name in git file zip unzip sha256sum rsync; do
   command -v "${command_name}" >/dev/null 2>&1 || {
     echo "Required command not found: ${command_name}" >&2
     exit 1
@@ -95,11 +96,39 @@ done
 
 mkdir -p -- "${ARM64_ROOT}" "${RELEASE_ROOT}"
 if [[ ${PACKAGE_ONLY} -eq 0 ]]; then
+  readonly EXPORT_PROJECT_ROOT="$(
+    mktemp -d -t netfishing-portmaster-export.XXXXXX
+  )"
+  cleanup_export_project() {
+    rm -rf -- "${EXPORT_PROJECT_ROOT}"
+  }
+  trap cleanup_export_project EXIT INT TERM
   rm -f -- "${ARM64_EXECUTABLE}" "${ARM64_PCK}"
+  rsync -a \
+    --exclude '/.git/' \
+    --exclude '/.godot/' \
+    --exclude '/art/source/' \
+    --exclude '/art/exported/system_icons/netfishing.ico' \
+    --exclude '/art/exported/system_icons/netfishing_1024.png' \
+    --exclude '/art/exported/system_icons/netfishing_1024.png.import' \
+    --exclude '/audio/ambience/' \
+    --exclude '/audio/music/' \
+    --exclude '/builds/' \
+    --exclude '/docs/design/' \
+    --exclude '/tests/' \
+    "${PROJECT_ROOT}/" "${EXPORT_PROJECT_ROOT}/"
+  "${ASSET_PROFILE_SCRIPT}" "${EXPORT_PROJECT_ROOT}"
   "${GODOT_BIN}" \
     --headless \
-    --path "${PROJECT_ROOT}" \
-    --export-release "Linux ARM64"
+    --path "${EXPORT_PROJECT_ROOT}" \
+    --import
+  "${GODOT_BIN}" \
+    --headless \
+    --path "${EXPORT_PROJECT_ROOT}" \
+    --export-release "Linux ARM64" \
+    "${ARM64_EXECUTABLE}"
+  cleanup_export_project
+  trap - EXIT INT TERM
 fi
 
 test -s "${ARM64_EXECUTABLE}"
@@ -153,6 +182,8 @@ Engine/export template: $("${GODOT_BIN}" --version)
 Architecture: AArch64
 Minimum linked GLIBC symbol version: GLIBC_2.28
 Rendering method: gl_compatibility
+Texture profile: 128 px maximum; 64 px gameplay catalogs; ETC2 compressed
+Audio profile: 22.05 kHz mono QOA effects; music and ambience omitted
 
 The executable and PCK were exported from the release commit listed above.
 Repository working-tree changes were not included in game content.
@@ -187,8 +218,9 @@ selected data root. Device-local configuration remains under
 \`netfishing/conf/\`.
 PortMaster launches use the light performance profile by default. Put the word
 \`normal\` in \`netfishing/conf/performance_profile\` to opt a capable device
-into the normal rendering profile. See \`netfishing/licenses/\` for bundled
-credits and license information.
+into the normal rendering profile. PortMaster packages omit music and ambience
+in both profiles. See \`netfishing/licenses/\` for bundled credits and license
+information.
 
 ## Controls
 

scripts/prepare_portmaster_assets.sh

@@ -0,0 +1,96 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+
+if [[ $# -ne 1 ]]; then
+	echo "usage: scripts/prepare_portmaster_assets.sh <temporary-project-root>" >&2
+	exit 2
+fi
+
+readonly PROJECT_ROOT="$1"
+readonly GENERAL_TEXTURE_LIMIT=128
+readonly GAMEPLAY_TEXTURE_LIMIT=64
+readonly AUDIO_SAMPLE_RATE=22050
+
+if [[ ! -f "${PROJECT_ROOT}/project.godot" ]]; then
+	echo "PortMaster asset project is missing project.godot: ${PROJECT_ROOT}" >&2
+	exit 1
+fi
+
+limit_texture_imports() {
+	local asset_root="$1"
+	local size_limit="$2"
+	local import_file
+	local updated=0
+
+	if [[ ! -d "${asset_root}" ]]; then
+		return
+	fi
+	while IFS= read -r -d '' import_file; do
+		if ! grep -q '^importer="texture"$' "${import_file}"; then
+			continue
+	fi
+		if ! grep -q '^process/size_limit=' "${import_file}"; then
+			continue
+	fi
+		sed -i \
+			-e 's|^compress/mode=.*$|compress/mode=2|' \
+			-e "s|^process/size_limit=.*$|process/size_limit=${size_limit}|" \
+			"${import_file}"
+		updated=$((updated + 1))
+	done < <(find "${asset_root}" -type f -name '*.import' -print0)
+	printf 'PortMaster texture limit %d px: %d imports under %s\n' \
+		"${size_limit}" "${updated}" "${asset_root#${PROJECT_ROOT}/}"
+}
+
+
+configure_audio_imports() {
+	local asset_root="$1"
+	local import_file
+	local updated=0
+
+	if [[ ! -d "${asset_root}" ]]; then
+		return
+	fi
+	while IFS= read -r -d '' import_file; do
+		if ! grep -q '^importer="wav"$' "${import_file}"; then
+			continue
+		fi
+		sed -i \
+			-e 's|^force/mono=.*$|force/mono=true|' \
+			-e 's|^force/max_rate=.*$|force/max_rate=true|' \
+			-e "s|^force/max_rate_hz=.*$|force/max_rate_hz=${AUDIO_SAMPLE_RATE}|" \
+			-e 's|^compress/mode=.*$|compress/mode=2|' \
+			"${import_file}"
+		updated=$((updated + 1))
+	done < <(find "${asset_root}" -type f -name '*.wav.import' -print0)
+	printf 'PortMaster audio profile %d Hz mono: %d imports under %s\n' \
+		"${AUDIO_SAMPLE_RATE}" "${updated}" \
+		"${asset_root#${PROJECT_ROOT}/}"
+}
+
+# The entire PortMaster project uses a deliberately small, VRAM-compressed
+# texture ceiling. Fonts are unaffected, preserving readable interface text
+# while raster artwork is reduced for one-gigabyte shared-memory devices.
+limit_texture_imports "${PROJECT_ROOT}" "${GENERAL_TEXTURE_LIMIT}"
+
+# These catalogs contain most of the authored high-resolution textures and
+# account for the largest runtime residency. At a 640x480 output, 64 pixels
+# remains sufficient for the deliberately low-fidelity light profile.
+for gameplay_root in \
+	"art/exported/characters" \
+	"art/exported/environment" \
+	"art/exported/items" \
+	"fish/species" \
+	"gathering" \
+	"items/icons" \
+	"world"; do
+	limit_texture_imports \
+		"${PROJECT_ROOT}/${gameplay_root}" \
+		"${GAMEPLAY_TEXTURE_LIMIT}"
+done
+
+# Short speech, call, and gameplay effects remain available, but use a small
+# mono QOA representation to reduce both package and resident sample memory.
+configure_audio_imports "${PROJECT_ROOT}/audio/sfx"
+configure_audio_imports "${PROJECT_ROOT}/sound/dialogue"