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feat(game): add HUD, audio SFX, and game over/restart

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Add IMGUI HUD overlay showing HP, wave, score, and enemy count.
Display centered Game Over panel with final score and restart prompt.
Add procedural sine-wave audio clips for shooting (440Hz) and enemy
kills (220Hz) via voltex_audio. Player blinks white during invincibility.
Press R to restart after game over.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
tolelom
2026-03-25 17:46:41 +09:00
parent d17732fcd5
commit 63d5ae2c25
2 changed files with 107 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
examples/survivor_game/Cargo.toml
View File

@@ -11,5 +11,7 @@ wgpu.workspace = true
winit.workspace = true
bytemuck.workspace = true
pollster.workspace = true
voltex_editor.workspace = true
voltex_audio.workspace = true
env_logger.workspace = true
log.workspace = true

109
examples/survivor_game/src/main.rs
View File

@@ -23,6 +23,8 @@ use voltex_renderer::{
IblResources, pbr_texture_bind_group_layout, create_pbr_texture_bind_group,
generate_sphere,
};
use voltex_editor::{UiContext, UiRenderer};
use voltex_audio::{AudioClip, AudioSystem};
use wgpu::util::DeviceExt;
use arena::{generate_arena, arena_model_matrices};
@@ -32,6 +34,16 @@ use game::GameState;
const ARENA_ENTITIES: usize = 5; // 1 floor + 4 obstacles
const MAX_ENTITIES: usize = 100; // pre-allocate for future enemies/projectiles
fn generate_sine(freq: f32, duration: f32, sample_rate: u32) -> AudioClip {
let samples = (sample_rate as f32 * duration) as usize;
let mut data = Vec::with_capacity(samples);
for i in 0..samples {
let t = i as f32 / sample_rate as f32;
data.push((t * freq * std::f32::consts::TAU).sin() * 0.3);
}
AudioClip::new(data, sample_rate, 1)
}
struct SurvivorApp {
state: Option<AppState>,
}
@@ -65,6 +77,11 @@ struct AppState {
shadow_pass_buffer: wgpu::Buffer,
shadow_pass_bind_group: wgpu::BindGroup,
_ibl: IblResources,
// UI
ui: UiContext,
ui_renderer: UiRenderer,
// Audio
audio: Option<AudioSystem>,
// Misc
input: InputState,
timer: GameTimer,
@@ -300,6 +317,22 @@ impl ApplicationHandler for SurvivorApp {
&shadow_layout,
);
// ---- UI ----
let screen_w = gpu.config.width as f32;
let screen_h = gpu.config.height as f32;
let ui = UiContext::new(screen_w, screen_h);
let ui_renderer = UiRenderer::new(
&gpu.device,
&gpu.queue,
gpu.surface_format,
&ui.font,
);
// ---- Audio ----
let shoot_clip = generate_sine(440.0, 0.05, 44100);
let kill_clip = generate_sine(220.0, 0.1, 44100);
let audio = AudioSystem::new(vec![shoot_clip, kill_clip]).ok();
self.state = Some(AppState {
window,
gpu,
@@ -323,6 +356,9 @@ impl ApplicationHandler for SurvivorApp {
shadow_pass_buffer,
shadow_pass_bind_group,
_ibl: ibl,
ui,
ui_renderer,
audio,
input: InputState::new(),
timer: GameTimer::new(60),
cam_aligned_size,
@@ -393,14 +429,20 @@ impl ApplicationHandler for SurvivorApp {
let dt = state.timer.frame_dt();
state.input.begin_frame();
// Restart on R when game over
if state.game.game_over && state.input.is_key_just_pressed(KeyCode::KeyR) {
state.game = GameState::new();
}
// Update game logic
state.game.update(&state.input, dt);
let events = state.game.update(&state.input, dt);
// Mouse aim + shooting
let aspect = state.gpu.config.width as f32 / state.gpu.config.height as f32;
let (mx, my) = state.input.mouse_position();
let screen_w = state.gpu.config.width as f32;
let screen_h = state.gpu.config.height as f32;
let mut shot_fired = false;
if let Some(world_pos) =
mouse_to_world_xz(mx as f32, my as f32, screen_w, screen_h, &state.camera, aspect)
{
@@ -409,11 +451,21 @@ impl ApplicationHandler for SurvivorApp {
if aim_xz.length_squared() > 0.01 {
let aim_dir = aim_xz.normalize();
if state.input.is_mouse_button_pressed(MouseButton::Left) {
state.game.try_shoot(aim_dir);
shot_fired = state.game.try_shoot(aim_dir);
}
}
}
// Play audio SFX
if let Some(ref audio) = state.audio {
if shot_fired {
audio.play(0, 0.3, false);
}
if events.enemies_killed > 0 {
audio.play(1, 0.5, false);
}
}
// Camera follows player
state.camera.target = state.game.player.position;
@@ -482,8 +534,19 @@ impl ApplicationHandler for SurvivorApp {
let (c, m, r) = state.materials[i];
(state.models[i], c, m, r)
} else if i == ARENA_ENTITIES {
// Player: blue sphere
(player_model, [0.2, 0.4, 1.0, 1.0], 0.3, 0.5)
// Player: blue sphere (flash white when invincible)
let player_color = if state.game.player.invincible_timer > 0.0 {
// Blink effect
let blink = (state.game.player.invincible_timer * 10.0).sin();
if blink > 0.0 {
[1.0, 1.0, 1.0, 1.0]
} else {
[0.2, 0.4, 1.0, 1.0]
}
} else {
[0.2, 0.4, 1.0, 1.0]
};
(player_model, player_color, 0.3, 0.5)
} else if i < base_enemy_idx {
// Projectile: yellow sphere
let pi = i - ARENA_ENTITIES - 1;
@@ -696,6 +759,44 @@ impl ApplicationHandler for SurvivorApp {
}
}
// ===== Pass 3: UI Overlay =====
{
let mouse_down = state.input.is_mouse_button_pressed(MouseButton::Left);
state.ui.begin_frame(mx as f32, my as f32, mouse_down);
// Top-left: game info
state.ui.text(&format!("HP: {}/{}", state.game.player.hp, state.game.player.max_hp));
state.ui.text(&format!("Wave: {}", state.game.wave.wave_number));
state.ui.text(&format!("Score: {}", state.game.score));
state.ui.text(&format!("Enemies: {}", state.game.enemies.len()));
if state.game.game_over {
state.ui.begin_panel(
"Game Over",
screen_w / 2.0 - 120.0,
screen_h / 2.0 - 60.0,
240.0,
120.0,
);
state.ui.text("GAME OVER");
state.ui.text(&format!("Final Score: {}", state.game.score));
state.ui.text("Press R to restart");
state.ui.end_panel();
}
state.ui.end_frame();
state.ui_renderer.render(
&state.gpu.device,
&state.gpu.queue,
&mut encoder,
&color_view,
&state.ui.draw_list,
screen_w,
screen_h,
);
}
state.gpu.queue.submit(std::iter::once(encoder.finish()));
output.present();
}