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* EarthHealingEffect3D - Healing visual effects for Gon (Earth) trigram supportive techniques
*
* Visualizes earth's nurturing and supportive philosophy through root-like energy.
* Roots grow from ground upward, representing the earth's life-giving power.
* Green growth energy particles rise with warm earth glow.
*
* PERFORMANCE OPTIMIZATION:
* - Uses instanced particles for efficient rendering
* - Object pooling for temporary Vector3 calculations during particle generation
* - Particle positions/velocities stored as number arrays to avoid Vector3 leaks
* - Target: 10+ concurrent effects at 60fps
* - Memory: <15KB per component
*
* Features:
* - Root-like energy tendrils growing upward
* - Warm earth glow (brown/orange) with green growth energy
* - Healing particles rising to target
* - Intensity scales with heal amount (1-6 HP)
* - Animation duration: 1-2 seconds
*
* Philosophy:
* "대지는 모든 것을 품고 키운다" - The earth embraces and nurtures all
*
* @module components/combat/EarthHealingEffect3D
* @category Combat Effects
* @korean 대지치유효과3D
*/
import { Points, PointMaterial } from "@react-three/drei";
import { useFrame } from "@react-three/fiber";
import React, { useRef, useMemo, useEffect } from "react";
import * as THREE from "three";
import { KOREAN_COLORS } from "../../../../../types/constants";
import { ThreeObjectPools } from "../../../../../utils/threeObjectPool";
/**
* Earth healing effect data
*/
export interface EarthHealingEffect {
/** Unique identifier */
readonly id: string;
/** Origin position in 3D world space (character position) */
readonly position: [number, number, number];
/** Heal amount (1-6 HP scale) */
readonly healAmount: number;
/** Timestamp when effect was created */
readonly startTime: number;
}
/**
* Props for EarthHealingEffect3D component
*/
export interface EarthHealingEffect3DProps {
/** Active earth healing effects to render */
readonly effects: readonly EarthHealingEffect[];
/** Whether to enable earth healing effects */
readonly enabled?: boolean;
/** Mobile device mode (reduced particle count) */
readonly isMobile?: boolean;
/** Callback when effect completes */
readonly onEffectComplete?: (effectId: string) => void;
}
/**
* Individual healing particle
* Stores positions and velocities as number arrays to avoid Vector3 memory leaks
*/
interface HealingParticle {
// Position stored as [x, y, z] array instead of Vector3
position: [number, number, number];
// Velocity stored as [vx, vy, vz] array instead of Vector3
velocity: [number, number, number];
age: number;
lifetime: number;
size: number;
rootIndex: number; // Which root tendril this particle follows
}
/**
* Root tendril path
*/
interface RootTendril {
baseAngle: number;
height: number;
curvature: number;
width: number;
}
/**
* Performance and visual constants
*/
const HEALING_CONSTANTS = {
/** Number of root tendrils */
ROOT_COUNT_DESKTOP: 6,
ROOT_COUNT_MOBILE: 4,
/** Particles per HP healed */
PARTICLES_PER_HP_DESKTOP: 8,
PARTICLES_PER_HP_MOBILE: 5,
/** Effect lifetime (s) */
LIFETIME: 1.8, // 1.8 seconds
/** Root growth duration (s) */
ROOT_GROWTH_DURATION: 0.8, // 800ms
/** Particle rise duration (s) */
PARTICLE_RISE_DURATION: 1.2, // 1.2 seconds
/** Root height range (m) */
ROOT_HEIGHT_MIN: 1.5,
ROOT_HEIGHT_MAX: 2.5,
/** Root base radius */
ROOT_BASE_RADIUS: 0.8,
/** Upward velocity range (m/s) */
VELOCITY_UP_MIN: 1.0,
VELOCITY_UP_MAX: 2.0,
/** Spiral effect strength */
SPIRAL_STRENGTH: 0.5,
/** Particle size range */
SIZE_MIN: 0.06,
SIZE_MAX: 0.12,
/** Ground Y position */
GROUND_Y: 0.0,
/** Maximum delta time for physics stability */
MAX_DELTA: 1 / 30,
} as const;
/**
* Generate root tendrils for healing effect
*/
const generateRootTendrils = (rootCount: number): RootTendril[] => {
const tendrils: RootTendril[] = [];
for (let i = 0; i < rootCount; i++) {
const angle = (i / rootCount) * Math.PI * 2;
tendrils.push({
baseAngle: angle,
height:
HEALING_CONSTANTS.ROOT_HEIGHT_MIN +
Math.random() * (HEALING_CONSTANTS.ROOT_HEIGHT_MAX - HEALING_CONSTANTS.ROOT_HEIGHT_MIN),
curvature: (Math.random() - 0.5) * 0.3, // Slight curve for organic feel
width: 0.03 + Math.random() * 0.02,
});
}
return tendrils;
};
/**
* Generate healing particles along root tendrils
*
* PERFORMANCE: Uses ThreeObjectPools to eliminate Vector3 allocations
*/
const generateHealingParticles = (
effect: EarthHealingEffect,
particleCount: number,
tendrils: RootTendril[]
): HealingParticle[] => {
const particles: HealingParticle[] = [];
const tempOrigin = ThreeObjectPools.vector3.acquire();
const tempVel = ThreeObjectPools.vector3.acquire();
const tempPos = ThreeObjectPools.vector3.acquire();
try {
tempOrigin.set(...effect.position);
// Start particles at ground level
tempOrigin.y = HEALING_CONSTANTS.GROUND_Y;
for (let i = 0; i < particleCount; i++) {
// Assign particle to a root tendril
const rootIndex = i % tendrils.length;
const tendril = tendrils[rootIndex];
// Position along tendril base
const baseRadius = HEALING_CONSTANTS.ROOT_BASE_RADIUS * (0.3 + Math.random() * 0.7);
tempPos.set(
tempOrigin.x + Math.cos(tendril.baseAngle) * baseRadius,
tempOrigin.y + Math.random() * 0.2, // Slight vertical spread
tempOrigin.z + Math.sin(tendril.baseAngle) * baseRadius
);
// Upward velocity with spiral
const upwardSpeed =
HEALING_CONSTANTS.VELOCITY_UP_MIN +
Math.random() * (HEALING_CONSTANTS.VELOCITY_UP_MAX - HEALING_CONSTANTS.VELOCITY_UP_MIN);
const spiralAngle = tendril.baseAngle + tendril.curvature;
tempVel.set(
Math.cos(spiralAngle) * HEALING_CONSTANTS.SPIRAL_STRENGTH,
upwardSpeed,
Math.sin(spiralAngle) * HEALING_CONSTANTS.SPIRAL_STRENGTH
);
// Store as number arrays instead of cloning Vector3 to avoid memory leaks
particles.push({
position: [tempPos.x, tempPos.y, tempPos.z],
velocity: [tempVel.x, tempVel.y, tempVel.z],
age: 0,
lifetime: HEALING_CONSTANTS.LIFETIME * (0.9 + Math.random() * 0.2),
size:
HEALING_CONSTANTS.SIZE_MIN +
Math.random() * (HEALING_CONSTANTS.SIZE_MAX - HEALING_CONSTANTS.SIZE_MIN),
rootIndex,
});
}
return particles;
} finally {
ThreeObjectPools.vector3.release(tempOrigin);
ThreeObjectPools.vector3.release(tempVel);
ThreeObjectPools.vector3.release(tempPos);
}
};
/**
* EarthHealingEffect3D Component
*
* Renders earth healing effects for supportive techniques.
* Root-like energy rises from ground with warm earth glow and green growth particles.
*
* @example
* ```tsx
* const [healingEffects, setHealingEffects] = useState<EarthHealingEffect[]>([]);
*
* // On healing technique
* const handleHealing = (position: [number, number, number], healAmount: number) => {
* setHealingEffects([...healingEffects, {
* id: generateId(),
* position,
* healAmount,
* startTime: Date.now(),
* }]);
* };
*
* <EarthHealingEffect3D
* effects={healingEffects}
* enabled={visualEffects.earthHealing}
* isMobile={isMobile}
* onEffectComplete={(id) => {
* setHealingEffects(prev => prev.filter(e => e.id !== id));
* }}
* />
* ```
*/
export const EarthHealingEffect3D: React.FC<EarthHealingEffect3DProps> = ({
effects,
enabled = true,
isMobile = false,
onEffectComplete,
}) => {
const particlesRef = useRef<Map<string, HealingParticle[]>>(new Map());
const tendrilsRef = useRef<Map<string, RootTendril[]>>(new Map());
const pointsRef = useRef<THREE.Points>(null);
const completedEffectsRef = useRef<Set<string>>(new Set());
// Configuration based on device
const config = useMemo(() => ({
rootCount: isMobile
? HEALING_CONSTANTS.ROOT_COUNT_MOBILE
: HEALING_CONSTANTS.ROOT_COUNT_DESKTOP,
particlesPerHP: isMobile
? HEALING_CONSTANTS.PARTICLES_PER_HP_MOBILE
: HEALING_CONSTANTS.PARTICLES_PER_HP_DESKTOP,
}), [isMobile]);
// Calculate max particles needed
const maxParticles = useMemo(() => {
return Math.ceil(6 * config.particlesPerHP); // Max 6 HP heal
}, [config.particlesPerHP]);
// Healing colors - Warm earth glow with green growth energy
const healingColor = useMemo(() => {
// Blend brown earth tone with green growth
return new THREE.Color(KOREAN_COLORS.ACCENT_GREEN).lerp(
new THREE.Color(KOREAN_COLORS.SECONDARY_BROWN_DARK),
0.3
);
}, []);
// Initialize particles for new effects
useEffect(() => {
if (!enabled) return;
effects.forEach((effect) => {
if (!particlesRef.current.has(effect.id)) {
// Generate root tendrils
const tendrils = generateRootTendrils(config.rootCount);
tendrilsRef.current.set(effect.id, tendrils);
// Generate particles
const particleCount = Math.ceil(effect.healAmount * config.particlesPerHP);
const particles = generateHealingParticles(effect, particleCount, tendrils);
particlesRef.current.set(effect.id, particles);
}
});
// Clean up removed effects
const effectIds = new Set(effects.map((e) => e.id));
particlesRef.current.forEach((_, id) => {
if (!effectIds.has(id)) {
particlesRef.current.delete(id);
tendrilsRef.current.delete(id);
completedEffectsRef.current.delete(id);
}
});
}, [effects, enabled, config]);
// Initial positions for buffer (updated in useFrame)
const initialPositions = useMemo(() => {
return new Float32Array(maxParticles * 3);
}, [maxParticles]);
// Physics update loop
useFrame((_, delta) => {
if (!enabled || !pointsRef.current) return;
const safeDelta = Math.min(delta, HEALING_CONSTANTS.MAX_DELTA);
let totalParticleIndex = 0;
const attr = pointsRef.current.geometry.attributes.position;
const posArray = attr.array as Float32Array;
// Update all active healing particles
particlesRef.current.forEach((particles, effectId) => {
const tendrils = tendrilsRef.current.get(effectId);
if (!tendrils) return;
let hasActiveParticles = false;
for (let i = 0; i < particles.length; i++) {
const p = particles[i];
p.age += safeDelta;
if (p.age < p.lifetime) {
hasActiveParticles = true;
// Update position - upward motion with spiral (using number arrays)
p.position[0] += p.velocity[0] * safeDelta;
p.position[1] += p.velocity[1] * safeDelta;
p.position[2] += p.velocity[2] * safeDelta;
// Add spiral motion based on root tendril
const tendril = tendrils[p.rootIndex];
const spiralProgress = p.age / p.lifetime;
const spiralRadius = HEALING_CONSTANTS.SPIRAL_STRENGTH * (1 - spiralProgress);
const spiralAngle = tendril.baseAngle + spiralProgress * Math.PI * 4;
p.position[0] += Math.cos(spiralAngle) * spiralRadius * safeDelta;
p.position[2] += Math.sin(spiralAngle) * spiralRadius * safeDelta;
// Slow down upward motion over time (settling effect)
p.velocity[1] *= 0.985;
// Update render position
if (totalParticleIndex < posArray.length / 3) {
posArray[totalParticleIndex * 3] = p.position[0];
posArray[totalParticleIndex * 3 + 1] = p.position[1];
posArray[totalParticleIndex * 3 + 2] = p.position[2];
totalParticleIndex++;
}
}
}
// Check if effect is complete
if (!hasActiveParticles && !completedEffectsRef.current.has(effectId)) {
completedEffectsRef.current.add(effectId);
onEffectComplete?.(effectId);
}
});
attr.needsUpdate = true;
});
// Don't render if disabled or no effects
if (!enabled || effects.length === 0) {
return null;
}
return (
<Points
ref={pointsRef}
positions={initialPositions}
data-testid="earth-healing-effect-3d"
>
<PointMaterial
color={healingColor}
size={HEALING_CONSTANTS.SIZE_MIN * 2}
sizeAttenuation
transparent
opacity={0.7}
depthWrite={false}
blending={THREE.AdditiveBlending} // Warm glow effect
/>
</Points>
);
};
export default EarthHealingEffect3D;
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