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* Combat Readiness Calculation System
*
* Calculates overall combat readiness from multiple factors:
* - Body part health (40% weight)
* - Pain level (20% weight)
* - Consciousness (20% weight)
* - Balance state (20% weight)
*
* @module utils/combatReadiness
*/
import type { PlayerState } from "../systems/player";
import type { BodyPartHealth } from "../systems/bodypart/types";
/**
* Combat readiness level thresholds and colors
*/
export const COMBAT_READINESS_THRESHOLDS = {
FULL_CAPABILITY: { min: 80, max: 100, color: 0x00ff00, label: { korean: "전투 준비", english: "Combat Ready" } },
LIGHT_IMPAIRMENT: { min: 60, max: 79, color: 0xffff00, label: { korean: "경미 손상", english: "Light Damage" } },
MODERATE_IMPAIRMENT: { min: 40, max: 59, color: 0xff8800, label: { korean: "중간 손상", english: "Moderate Damage" } },
HEAVY_IMPAIRMENT: { min: 20, max: 39, color: 0xff3333, label: { korean: "중증 손상", english: "Heavy Damage" } },
CRITICAL: { min: 0, max: 19, color: 0x990000, label: { korean: "위급 상태", english: "Critical" } },
} as const;
/**
* Weight factors for combat readiness calculation
*/
const READINESS_WEIGHTS = {
BODY_HEALTH: 0.4, // 40% - Primary survival metric
PAIN: 0.2, // 20% - Affects performance
CONSCIOUSNESS: 0.2, // 20% - Awareness and response
BALANCE: 0.2, // 20% - Stability and mobility
} as const;
/**
* Calculate average body part health percentage
*
* @param bodyHealth - Body part health state
* @returns Average health percentage (0-100)
* @throws {Error} If bodyHealth is null or undefined
*/
export function calculateBodyHealthPercentage(bodyHealth: BodyPartHealth): number {
if (!bodyHealth) {
throw new Error("bodyHealth cannot be null or undefined");
}
const parts = [
bodyHealth.head,
bodyHealth.torsoUpper,
bodyHealth.torsoLower,
bodyHealth.armLeft,
bodyHealth.armRight,
bodyHealth.legLeft,
bodyHealth.legRight,
];
const total = parts.reduce((sum, hp) => sum + hp, 0);
const average = total / parts.length;
return Math.max(0, Math.min(100, average));
}
/**
* Calculate combat readiness from player state
*
* Combines multiple factors with weighted importance:
* - Body part health (40%): Average health of all body parts
* - Pain (20%): Inverted pain level (0 pain = 100% contribution)
* - Consciousness (20%): Direct consciousness level
* - Balance (20%): Direct balance level
*
* @param player - Current player state
* @returns Combat readiness percentage (0-100)
* @throws {Error} If player is null or undefined
*
* @example
* ```typescript
* const readiness = calculateCombatReadiness(playerState);
* console.log(`Combat Readiness: ${readiness}%`);
* // Output: "Combat Readiness: 85%"
* ```
*/
export function calculateCombatReadiness(player: PlayerState): number {
if (!player) {
throw new Error("player cannot be null or undefined");
}
// 1. Body health contribution (40%)
// Use bodyPartHealth if available, otherwise use aggregate health
let bodyHealthPercent: number;
if (player.bodyPartHealth) {
bodyHealthPercent = calculateBodyHealthPercentage(player.bodyPartHealth);
} else {
// Fall back to aggregate health percentage
const maxHealth = player.maxHealth || 100; // Prevent division by zero
bodyHealthPercent = maxHealth > 0 ? (player.health / maxHealth) * 100 : 0;
}
const bodyHealthScore = bodyHealthPercent * READINESS_WEIGHTS.BODY_HEALTH;
// 2. Pain contribution (20%) - inverted (less pain = better readiness)
const painPercent = Math.max(0, Math.min(100, player.pain));
const painScore = (100 - painPercent) * READINESS_WEIGHTS.PAIN;
// 3. Consciousness contribution (20%)
const consciousnessPercent = Math.max(0, Math.min(100, player.consciousness));
const consciousnessScore = consciousnessPercent * READINESS_WEIGHTS.CONSCIOUSNESS;
// 4. Balance contribution (20%)
const balancePercent = Math.max(0, Math.min(100, player.balance));
const balanceScore = balancePercent * READINESS_WEIGHTS.BALANCE;
// Combine all factors
const totalReadiness = bodyHealthScore + painScore + consciousnessScore + balanceScore;
return Math.max(0, Math.min(100, Math.round(totalReadiness)));
}
/**
* Get color for combat readiness level
*
* @param readiness - Combat readiness percentage (0-100)
* @returns Hex color code
* @throws {Error} If readiness is NaN
*/
export function getCombatReadinessColor(readiness: number): number {
if (Number.isNaN(readiness)) {
throw new Error("readiness cannot be NaN");
}
if (readiness >= COMBAT_READINESS_THRESHOLDS.FULL_CAPABILITY.min) {
return COMBAT_READINESS_THRESHOLDS.FULL_CAPABILITY.color;
}
if (readiness >= COMBAT_READINESS_THRESHOLDS.LIGHT_IMPAIRMENT.min) {
return COMBAT_READINESS_THRESHOLDS.LIGHT_IMPAIRMENT.color;
}
if (readiness >= COMBAT_READINESS_THRESHOLDS.MODERATE_IMPAIRMENT.min) {
return COMBAT_READINESS_THRESHOLDS.MODERATE_IMPAIRMENT.color;
}
if (readiness >= COMBAT_READINESS_THRESHOLDS.HEAVY_IMPAIRMENT.min) {
return COMBAT_READINESS_THRESHOLDS.HEAVY_IMPAIRMENT.color;
}
return COMBAT_READINESS_THRESHOLDS.CRITICAL.color;
}
/**
* Get label for combat readiness level
*
* @param readiness - Combat readiness percentage (0-100)
* @returns Korean and English labels
* @throws {Error} If readiness is NaN
*/
export function getCombatReadinessLabel(readiness: number): { korean: string; english: string } {
if (Number.isNaN(readiness)) {
throw new Error("readiness cannot be NaN");
}
if (readiness >= COMBAT_READINESS_THRESHOLDS.FULL_CAPABILITY.min) {
return COMBAT_READINESS_THRESHOLDS.FULL_CAPABILITY.label;
}
if (readiness >= COMBAT_READINESS_THRESHOLDS.LIGHT_IMPAIRMENT.min) {
return COMBAT_READINESS_THRESHOLDS.LIGHT_IMPAIRMENT.label;
}
if (readiness >= COMBAT_READINESS_THRESHOLDS.MODERATE_IMPAIRMENT.min) {
return COMBAT_READINESS_THRESHOLDS.MODERATE_IMPAIRMENT.label;
}
if (readiness >= COMBAT_READINESS_THRESHOLDS.HEAVY_IMPAIRMENT.min) {
return COMBAT_READINESS_THRESHOLDS.HEAVY_IMPAIRMENT.label;
}
return COMBAT_READINESS_THRESHOLDS.CRITICAL.label;
}
/**
* Get number of filled bars for combat readiness
*
* Uses ceiling behavior: any non-zero readiness shows at least 1 bar.
* This provides visual feedback even for minimal combat capability.
*
* @param readiness - Combat readiness percentage (0-100)
* @param totalBars - Total number of bars (default: 10)
* @returns Number of filled bars (0-totalBars)
* @throws {Error} If readiness is NaN or totalBars is not positive
*
* @example
* ```typescript
* getCombatReadinessBars(0, 10); // Returns 0 bars
* getCombatReadinessBars(5, 10); // Returns 1 bar (ceil behavior)
* getCombatReadinessBars(50, 10); // Returns 5 bars
* getCombatReadinessBars(100, 10); // Returns 10 bars
* ```
*/
export function getCombatReadinessBars(readiness: number, totalBars: number = 10): number {
if (Number.isNaN(readiness)) {
throw new Error("readiness cannot be NaN");
}
if (totalBars <= 0 || !Number.isInteger(totalBars)) {
throw new Error("totalBars must be a positive integer");
}
const percentage = Math.max(0, Math.min(100, readiness));
// Return 0 bars only for exactly 0% readiness
if (percentage === 0) return 0;
// Use ceiling for any non-zero value to provide visual feedback
return Math.ceil((percentage / 100) * totalBars);
}
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