72 lines
2.3 KiB
Rust
72 lines
2.3 KiB
Rust
// Crookfinger's voice: he "speaks" in a squeaky made-up imp language - short synthesised
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// syllables in the rhythm of the text (the text itself is shown as usual).
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use crate::audio;
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use crate::game::VOICE_SYLLABLES;
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pub struct Voice {
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queue: Vec<(f64, usize)>, // time, sound index
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busy_until: f64,
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}
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// which messages Crookfinger says out loud
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pub fn speaks(key: &str) -> bool {
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key.starts_with("hint.")
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|| key.starts_with("msg.wave_warn")
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|| matches!(
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key,
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"msg.payday_soon" | "msg.researched" | "msg.mission_start" | "msg.mission_won" | "msg.rune_chest" | "msg.trap_made" | "msg.revenant_rises" | "msg.altar_gift" | "msg.altar_blessing" | "msg.brawl" | "msg.alarm" | "msg.creature_freed" | "msg.spring_taken"
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)
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}
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impl Voice {
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pub fn new() -> Voice {
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Voice { queue: Vec::new(), busy_until: 0.0 }
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}
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// babble a text: one syllable per vowel group, pauses at spaces and punctuation
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pub fn say(&mut self, text: &str, now: f64, max_syllables: usize) {
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if now < self.busy_until {
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return;
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}
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let mut t = now + 0.05;
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let mut n = 0;
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let mut h: u32 = 2166136261;
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let mut in_vowel = false;
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for ch in text.chars() {
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h = (h ^ ch as u32).wrapping_mul(16777619);
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let vowel = "aeiouäöüyAEIOUÄÖÜY".contains(ch);
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if vowel && !in_vowel {
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let v = VOICE_SYLLABLES[(h >> 7) as usize % VOICE_SYLLABLES.len()];
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self.queue.push((t, v.index()));
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t += 0.085 + ((h >> 13) % 4) as f64 * 0.012;
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n += 1;
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if n >= max_syllables {
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break;
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}
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}
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in_vowel = vowel;
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match ch {
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' ' => t += 0.035,
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',' | ';' | '-' => t += 0.14,
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'.' | '!' | '?' => t += 0.28,
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_ => {}
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}
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}
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self.busy_until = t + 4.0;
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}
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pub fn update(&mut self, now: f64, volume: f32) {
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let due: Vec<usize> = self.queue.iter().filter(|q| q.0 <= now).map(|q| q.1).collect();
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self.queue.retain(|q| q.0 > now);
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for i in due {
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audio::play_sfx(i, 0.75 * volume.max(0.0), 0.0);
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}
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}
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pub fn stop(&mut self) {
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self.queue.clear();
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}
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}
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