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Add shareware HUD module and integrate with asset registry for improved HUD handling

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Signed-off-by: Hans Kokx <hans.d.kokx@gmail.com>
This commit is contained in:
Hans Kokx
2026-03-19 14:29:12 +01:00
parent 57dde0f31c
commit 8bf0dbd57c
5 changed files with 180 additions and 21 deletions
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packages/wolf_3d_dart/lib/src/rendering/renderer_backend.dart
+40 -18
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@@ -151,36 +151,49 @@ abstract class RendererBackend<T>
/// backend can scale/map them consistently via [blitHudVgaImage].
void drawStandardVgaHud(WolfEngine engine) {
final List<VgaImage> vgaImages = engine.data.vgaImages;
final int statusBarIndex = vgaImages.indexWhere(
(img) => img.width == 320 && img.height == 40,
);
if (statusBarIndex == -1) return;
final statusBarRef = engine.data.registry.hud.resolve(HudKey.statusBar);
final int statusBarIndex = statusBarRef?.vgaIndex ?? -1;
if (statusBarIndex >= 0 && statusBarIndex < vgaImages.length) {
blitHudVgaImage(vgaImages[statusBarIndex], 0, 160);
}
blitHudVgaImage(vgaImages[statusBarIndex], 0, 160);
_drawHudNumber(vgaImages, 1, 32, 176);
_drawHudNumber(vgaImages, engine.player.score, 96, 176);
_drawHudNumber(vgaImages, 3, 120, 176);
_drawHudNumber(vgaImages, engine.player.health, 192, 176);
_drawHudNumber(vgaImages, engine.player.ammo, 232, 176);
_drawHudNumber(engine, vgaImages, 1, 32, 176);
_drawHudNumber(engine, vgaImages, engine.player.score, 96, 176);
_drawHudNumber(engine, vgaImages, 3, 120, 176);
_drawHudNumber(engine, vgaImages, engine.player.health, 192, 176);
_drawHudNumber(engine, vgaImages, engine.player.ammo, 232, 176);
_drawHudFace(engine, vgaImages);
_drawHudWeaponIcon(engine, vgaImages);
}
void _drawHudNumber(
WolfEngine engine,
List<VgaImage> vgaImages,
int value,
int rightAlignX,
int startY,
) {
// HUD numbers are rendered with fixed-width VGA glyphs (8 px advance).
const int zeroIndex = 96;
const digitKeys = [
HudKey.digit0,
HudKey.digit1,
HudKey.digit2,
HudKey.digit3,
HudKey.digit4,
HudKey.digit5,
HudKey.digit6,
HudKey.digit7,
HudKey.digit8,
HudKey.digit9,
];
final String numStr = value.toString();
int currentX = rightAlignX - (numStr.length * 8);
for (int i = 0; i < numStr.length; i++) {
final int digit = int.parse(numStr[i]);
final int imageIndex = zeroIndex + digit;
if (imageIndex < vgaImages.length) {
final ref = engine.data.registry.hud.resolve(digitKeys[digit]);
final imageIndex = ref?.vgaIndex ?? -1;
if (imageIndex >= 0 && imageIndex < vgaImages.length) {
blitHudVgaImage(vgaImages[imageIndex], currentX, startY);
}
currentX += 8;
@@ -188,15 +201,24 @@ abstract class RendererBackend<T>
}
void _drawHudFace(WolfEngine engine, List<VgaImage> vgaImages) {
final int faceIndex = hudFaceVgaIndex(engine.player.health);
if (faceIndex < vgaImages.length) {
final faceRef = engine.data.registry.hud.faceForHealth(
engine.player.health,
);
final int faceIndex = faceRef?.vgaIndex ?? -1;
if (faceIndex >= 0 && faceIndex < vgaImages.length) {
blitHudVgaImage(vgaImages[faceIndex], 136, 164);
}
}
void _drawHudWeaponIcon(WolfEngine engine, List<VgaImage> vgaImages) {
final int weaponIndex = hudWeaponVgaIndex(engine);
if (weaponIndex < vgaImages.length) {
final HudKey weaponKey = engine.player.hasChainGun
? HudKey.chainGunIcon
: engine.player.hasMachineGun
? HudKey.machineGunIcon
: HudKey.pistolIcon;
final weaponRef = engine.data.registry.hud.resolve(weaponKey);
final int weaponIndex = weaponRef?.vgaIndex ?? -1;
if (weaponIndex >= 0 && weaponIndex < vgaImages.length) {
blitHudVgaImage(vgaImages[weaponIndex], 256, 164);
}
}