SirStone
b7f49071ba
Cherry-picked Evo_Bot-related files from research/goto-controller: - CONTEXT.md (domain context) - ADR-0001: neuroevolution with fixed-topology ANN evolved by GA - GA parameters research doc - OscillatorBot sparring partner - prototypes/ga_gun_spike GA prototype - 13 neuroevolution reference papers Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
60 lines
2.6 KiB
Markdown
60 lines
2.6 KiB
Markdown
# Evo_Bot
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Robocode Tank Royale bot with a modular gun system where evolved neural networks learn to predict enemy dodge behavior.
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## Language
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**Evo_Bot**:
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The bot itself — handles movement and firing discipline. Guns are pluggable modules.
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_Avoid_: robot, tank
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**Guess Factor (GF)**:
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A value from -1 to +1 representing where on the maximum escape angle arc the enemy is. 0 = directly ahead, -1 = full left dodge, +1 = full right dodge. The gun's prediction target.
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_Avoid_: aim offset, dodge index
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**Max Escape Angle (MEA)**:
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The widest angle the enemy can reach before a bullet arrives, computed from distance and bullet speed. Guess factor is multiplied by MEA to get the aim offset.
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**Lateral Velocity**:
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Enemy speed projected perpendicular to the line between you and them. The primary signal for guess factor prediction.
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_Avoid_: tangential speed, sideways velocity
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**Sliding Window**:
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The last N ticks (default 30) of enemy state fed as input to the network. Each tick contains lateral velocity, heading delta, and wall distance ahead.
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_Avoid_: observation buffer, input history
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**Replay Tape**:
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Rolling buffer of recorded enemy states (~2000 ticks). The evolution thread evaluates gun fitness against this tape.
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_Avoid_: experience buffer, replay buffer
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**Virtual Gun**:
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A gun that runs in parallel without actually firing. It tracks where it would have aimed and whether a simulated bullet would have hit. Used to compare gun variants.
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**Virtual Bullet**:
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A simulated bullet fired by a virtual gun. Never actually sent to the game engine.
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**TOPO_Gun**:
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Fixed-topology ANN gun evolved by GA. Network shape is predetermined (e.g., 91-8-1), only weights are evolved.
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_Avoid_: static gun, fixed gun
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**NEAT_Gun**:
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Variable-topology ANN gun where evolution can add/remove neurons and connections (NEAT algorithm). Deferred — only built if TOPO_Gun hits a ceiling.
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**Population**:
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The set of candidate networks (default 64-200) being evolved. Each member is a complete set of ANN weights.
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**Champion**:
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The best-performing network in the current GA population. The champion's weights are pushed to the inference side when it beats the current best.
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_Avoid_: best, winner, elite
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**Fitness**:
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Hit count when a network's aim predictions are evaluated as virtual bullets against sampled ticks from the replay tape.
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_Avoid_: score, reward
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**Cold Start**:
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The first-ever battle with no saved weights. The gun does not fire until the evolution thread produces its first champion. Subsequent battles load persisted weights.
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**Weight Persistence**:
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Saving evolved weights to disk. Load order: per-opponent file, then global fallback, then random initialization.
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_Avoid_: model saving, checkpointing
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