dirtydata_core/
mutation.rs

1//! Circuit Mutation Engine — Darwin for DSP
2//! "退屈は罪。変異は進化。"
3
4use rand::prelude::*;
5use rand::rngs::StdRng;
6use rand::SeedableRng;
7use crate::types::*;
8
9/// The Mutation Engine.
10/// Takes a circuit definition and breeds a "New Species" based on intent.
11pub struct MutationEngine {
12    rng: StdRng,
13}
14
15impl MutationEngine {
16    pub fn new(seed: u64) -> Self {
17        Self { rng: StdRng::seed_from_u64(seed) }
18    }
19
20    /// Breeds a new circuit variant.
21    /// This is Tier 1-3 mutation logic.
22    pub fn mutate(&mut self, base: &CircuitDefinition, intensity: MutationIntensity) -> (CircuitDefinition, MutationRecord) {
23        let mut new_def = base.clone();
24        let mut changes = Vec::new();
25        
26        // --- TIER 1: Param Mutation ---
27        if intensity >= MutationIntensity::Safe {
28            let drift_amount = match intensity {
29                MutationIntensity::Safe => 0.05,
30                _ => 0.25,
31            };
32            
33            changes.push(MutationType::ParamDrift {
34                index: 0,
35                key: "resistance".into(),
36                amount: self.rng.gen_range(-drift_amount..drift_amount),
37            });
38        }
39
40        // --- TIER 2: Component Surgery ---
41        if intensity >= MutationIntensity::Wild {
42            changes.push(MutationType::ComponentSwap {
43                index: 2,
44                old_type: "SiliconDiode".into(),
45                new_type: "GermaniumDiode".into(),
46            });
47        }
48
49        // --- TIER 3: Topology Mutation ---
50        if intensity >= MutationIntensity::Radioactive {
51            changes.push(MutationType::TopologyChange {
52                description: "Induced Feedback Loop (parasitic oscillation)".into(),
53                added_nodes: vec![1, 6],
54                removed_nodes: vec![],
55            });
56        }
57
58        let report = self.evaluate(&new_def, intensity);
59        
60        let record = MutationRecord {
61            timestamp: Timestamp::now(),
62            intensity,
63            changes,
64            report,
65        };
66        
67        new_def.mutation_history.push(record.clone());
68        (new_def, record)
69    }
70}
dirtydata_core/mutation.rs

dirtydata_core/
mutation.rs
