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import { Position, VitalPointSeverity } from "../types/common";
import { VitalPoint, VitalPointHitResult } from "./vitalpoint/types";
export class VitalPointSystem {
private vitalPoints: VitalPoint[] = [];
constructor() {
// Initialize with some basic vital points
this.initializeVitalPoints();
}
/**
* Process a hit at a specific position
*/
processHit(
targetPosition: Position,
_hitBox: { width: number; height: number }, // Prefixed with underscore to indicate intentionally unused
targetedVitalPointId?: string | null
): VitalPointHitResult {
// If a specific vital point is targeted, check that one
if (targetedVitalPointId) {
const targetVitalPoint = this.getVitalPointById(targetedVitalPointId);
if (targetVitalPoint) {
return this.calculateVitalPointHit(targetVitalPoint, targetPosition);
}
}
// Otherwise, find the closest vital point
const closestVitalPoint = this.findClosestVitalPoint(targetPosition);
if (!closestVitalPoint) {
return {
hit: false,
damage: 0,
effects: [],
severity: VitalPointSeverity.MINOR,
};
}
// Calculate distance to determine hit accuracy
const distance = this.calculateDistance(
targetPosition,
closestVitalPoint.position
);
const maxHitDistance = 50; // pixels
if (distance <= maxHitDistance) {
return {
hit: true,
vitalPointHit: closestVitalPoint,
damage: this.calculateBaseDamage(closestVitalPoint, distance),
effects: [],
severity: closestVitalPoint.severity,
accuracy: Math.max(0, 1 - distance / maxHitDistance),
};
}
return {
hit: false,
damage: 0,
effects: [],
severity: VitalPointSeverity.MINOR,
};
}
/**
* Get vital point by ID
*/
getVitalPointById(id: string): VitalPoint | null {
return this.vitalPoints.find((vp) => vp.id === id) || null;
}
/**
* Get all vital points
*/
getVitalPoints(): readonly VitalPoint[] {
return this.vitalPoints;
}
/**
* Calculate hit result for a specific vital point
*/
calculateHit(
technique: any,
attackerPosition: Position,
_defenderPosition: Position, // Prefixed with underscore to indicate intentionally unused
_defenderStance: any // Prefixed with underscore to indicate intentionally unused
): VitalPointHitResult {
// Find closest vital point to attack
const closestVitalPoint = this.findClosestVitalPoint(attackerPosition);
if (!closestVitalPoint) {
return {
hit: false,
damage: 0,
effects: [],
severity: VitalPointSeverity.MINOR,
};
}
// Calculate hit based on technique accuracy and distance
const distance = this.calculateDistance(
attackerPosition,
closestVitalPoint.position
);
const hitChance = technique.accuracy * (1 - distance / 100);
if (Math.random() < hitChance) {
return {
hit: true,
vitalPointHit: closestVitalPoint,
damage: this.calculateBaseDamage(closestVitalPoint, distance),
effects: [],
severity: closestVitalPoint.severity,
};
}
return {
hit: false,
damage: 0,
effects: [],
severity: VitalPointSeverity.MINOR,
};
}
/**
* Find the closest vital point to a position
*/
private findClosestVitalPoint(position: Position): VitalPoint | null {
if (this.vitalPoints.length === 0) return null;
let closest = this.vitalPoints[0];
let minDistance = this.calculateDistance(position, closest.position);
for (const vitalPoint of this.vitalPoints) {
const distance = this.calculateDistance(position, vitalPoint.position);
if (distance < minDistance) {
minDistance = distance;
closest = vitalPoint;
}
}
return closest;
}
/**
* Calculate distance between two positions
*/
private calculateDistance(pos1: Position, pos2: Position): number {
const dx = pos1.x - pos2.x;
const dy = pos1.y - pos2.y;
return Math.sqrt(dx * dx + dy * dy);
}
/**
* Calculate vital point hit result
*/
private calculateVitalPointHit(
vitalPoint: VitalPoint,
hitPosition: Position
): VitalPointHitResult {
const distance = this.calculateDistance(hitPosition, vitalPoint.position);
const baseDamage = this.calculateBaseDamage(vitalPoint, distance);
return {
hit: true,
vitalPointHit: vitalPoint,
damage: baseDamage,
effects: [],
severity: vitalPoint.severity,
accuracy: Math.max(0, 1 - distance / 50),
};
}
/**
* Calculate base damage for a vital point hit
*/
private calculateBaseDamage(
vitalPoint: VitalPoint,
distance: number
): number {
const baseDamage = vitalPoint.baseDamage || 10;
const distanceModifier = Math.max(0.1, 1 - distance / 100);
return Math.floor(baseDamage * distanceModifier);
}
/**
* Initialize basic vital points for testing
*/
private initializeVitalPoints(): void {
// Add some basic vital points for testing
this.vitalPoints = [
{
id: "head_temple",
names: {
korean: "태양혈",
english: "Temple",
romanized: "taeyang-hyeol",
},
position: { x: 100, y: 50 },
category: "neurological" as any,
severity: VitalPointSeverity.MAJOR,
baseDamage: 25,
effects: [],
description: {
korean: "관자놀이의 압박점",
english: "Pressure point at the temple",
romanized: "gwanja-nori-ui apbakjeom",
},
targetingDifficulty: 0.7,
effectiveStances: [],
},
{
id: "neck_carotid",
names: {
korean: "경동맥",
english: "Carotid Artery",
romanized: "gyeong-dong-maek",
},
position: { x: 100, y: 80 },
category: "vascular" as any,
severity: VitalPointSeverity.CRITICAL,
baseDamage: 35,
effects: [],
description: {
korean: "목의 주요 동맥",
english: "Major artery in the neck",
romanized: "mog-ui juyo dong-maek",
},
targetingDifficulty: 0.8,
effectiveStances: [],
},
];
}
}
export default VitalPointSystem;
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