ai-code-battle/scripts/verify-combat-density.sh
jedarden bed7f14797 fix(engine): reduce ZoneMinRadius from 5 to 3 to force combat engagement
The previous ZoneMinRadius=5 created a final zone diameter of 10 tiles,
which allowed bots to remain outside the 3.5-tile attack radius even when
both were inside the zone. This resulted in low combat_death rates for
passive bot strategies (~10% for random bots vs the 65-80% target).

With ZoneMinRadius=3, the final zone diameter is 6 tiles, forcing bots
into proximity where focus-fire combat triggers more consistently.

Also adds verify-combat-density.sh script for ongoing metrics tracking.

Closes: bf-4bj9
2026-05-24 18:40:40 -04:00

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#!/bin/bash
# Verify combat_death event rates across different bot combinations
# Expected: 2-player ~65-80%, 6-player 100%
set -e
cd "$(dirname "$0")/.."
echo "=== Combat Density Verification ==="
echo "Running 20 matches per configuration..."
echo
# Function to run matches and calculate combat_death rate
run_matches() {
local bots="$1"
local count="$2"
local description="$3"
local with_deaths=0
local total_deaths=0
echo "Testing: $description"
for i in $(seq 1 $count); do
local output="/tmp/verify-$i.json"
./acb-local -bots $bots -max-turns 100 -output $output >/dev/null 2>&1
local deaths=$(python3 -c "import json; r=json.load(open('$output')); print(len([e for t in r['turns'] for e in t.get('events', []) if e.get('type') == 'combat_death']))" 2>/dev/null || echo 0)
if [ "$deaths" -gt 0 ]; then
with_deaths=$((with_deaths + 1))
total_deaths=$((total_deaths + deaths))
fi
done
local rate=$((with_deaths * 100 / count))
echo " Matches with combat_deaths: $with_deaths/$count ($rate%)"
echo " Total combat_death events: $total_deaths"
echo " Average per match: $(python3 -c "print($total_deaths / $count)")"
echo
# Return 1 if rate is below threshold
if [ "$description" = "2-player" ] && [ $rate -lt 65 ]; then
return 1
fi
if [ "$description" = "6-player" ] && [ $rate -lt 100 ]; then
return 1
fi
return 0
}
# Test 2-player matches
run_matches "random,random" 20 "2-player (random bots)"
run_matches "gatherer,rusher" 20 "2-player (aggressive bots)"
# Test 6-player matches
run_matches "random,gatherer,rusher,guardian,swarm,hunter" 20 "6-player (mixed bots)"
echo "=== Verification Complete ==="