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* TrainingAICharacter3D - 3D character model for AI opponent in training
*
* Displays the AI opponent with stance-based materials and animations
*
* Performance optimizations:
* - Memoized geometries to prevent recreation on every render
* - Memoized materials for consistent shading
* - Minimal per-frame operations for 60fps target
* - Physics-based attack movement for realistic forward momentum
*/
import { useFrame } from "@react-three/fiber";
import React, { useEffect, useMemo, useRef } from "react";
import * as THREE from "three";
import { TrigramStance } from "../../../../types/common";
import { KOREAN_COLORS } from "../../../../types/constants";
import { AttackMovementPhysics } from "../../../../systems/physics";
import { AnimationType } from "../../../../systems/animation";
/**
* Props for TrainingAICharacter3D
*/
export interface TrainingAICharacter3DProps {
/** Position in 3D space */
readonly position: [number, number, number];
/** Current trigram stance */
readonly stance: TrigramStance;
/** Whether AI is currently attacking */
readonly isAttacking?: boolean;
/** Animation type for current attack (used for forward movement) */
readonly attackAnimationType?: AnimationType;
/** Health percentage (0-1) */
readonly healthPercent?: number;
}
/**
* Get color based on trigram stance
*/
function getStanceColor(stance: TrigramStance): number {
const stanceColors: Record<TrigramStance, number> = {
[TrigramStance.GEON]: KOREAN_COLORS.SECONDARY_YELLOW, // Heaven
[TrigramStance.TAE]: KOREAN_COLORS.ACCENT_BLUE, // Lake
[TrigramStance.LI]: KOREAN_COLORS.ACCENT_RED, // Fire
[TrigramStance.JIN]: KOREAN_COLORS.ACCENT_GOLD, // Thunder
[TrigramStance.SON]: KOREAN_COLORS.ACCENT_GREEN, // Wind
[TrigramStance.GAM]: KOREAN_COLORS.PRIMARY_CYAN, // Water
[TrigramStance.GAN]: KOREAN_COLORS.UI_BACKGROUND_LIGHT, // Mountain
[TrigramStance.GON]: KOREAN_COLORS.UI_BACKGROUND_MEDIUM, // Earth
};
return stanceColors[stance] ?? KOREAN_COLORS.PRIMARY_CYAN;
}
/**
* TrainingAICharacter3D Component
* Renders the AI opponent with stance-based visual effects and attack movement
*/
export const TrainingAICharacter3D: React.FC<TrainingAICharacter3DProps> = ({
position,
stance,
isAttacking = false,
attackAnimationType,
healthPercent = 1.0,
}) => {
const groupRef = useRef<THREE.Group>(null);
const stanceAuraRef = useRef<THREE.Mesh>(null);
const attackPhysics = useMemo(() => new AttackMovementPhysics(), []);
const attackStartTimeRef = useRef<number | null>(null);
const originalPositionRef = useRef<THREE.Vector3 | null>(null);
const attackMovementResultRef = useRef<ReturnType<
typeof attackPhysics.calculateAttackMovement
> | null>(null);
const wasAttackingRef = useRef(false);
useEffect(() => {
originalPositionRef.current ??= new THREE.Vector3(...position);
}, [position]);
useEffect(() => {
if (!isAttacking && originalPositionRef.current) {
originalPositionRef.current.set(...position);
}
}, [position, isAttacking]);
useEffect(() => {
if (isAttacking && !wasAttackingRef.current) {
attackStartTimeRef.current = performance.now() / 1000;
Eif (originalPositionRef.current) {
originalPositionRef.current.set(...position);
}
Iif (attackAnimationType) {
const direction = new THREE.Vector3(0, 0, -1); // Forward toward player
attackMovementResultRef.current = attackPhysics.calculateAttackMovement(
{
animationType: attackAnimationType,
currentStance: stance,
direction,
animationDuration: 0.4, // Default 400ms animation
}
);
}
} else Iif (!isAttacking && wasAttackingRef.current) {
attackStartTimeRef.current = null;
attackMovementResultRef.current = null;
}
wasAttackingRef.current = isAttacking;
}, [isAttacking, attackAnimationType, stance, position, attackPhysics]);
const stanceColor = useMemo(() => getStanceColor(stance), [stance]);
const geometries = useMemo(
() => ({
body: new THREE.CapsuleGeometry(0.4, 1.2, 16, 32),
head: new THREE.SphereGeometry(0.3, 16, 16),
aura: new THREE.RingGeometry(0.6, 0.8, 32),
}),
[]
);
const materials = useMemo(
() => ({
body: new THREE.MeshStandardMaterial({
color: stanceColor,
emissive: stanceColor,
emissiveIntensity: isAttacking ? 0.6 : 0.2,
metalness: 0.4,
roughness: 0.6,
}),
head: new THREE.MeshStandardMaterial({
color: KOREAN_COLORS.ACCENT_GOLD,
metalness: 0.5,
roughness: 0.5,
}),
aura: new THREE.MeshBasicMaterial({
color: stanceColor,
transparent: true,
opacity: 0.4,
side: THREE.DoubleSide,
}),
}),
[stanceColor, isAttacking]
);
useEffect(() => {
return () => {
Object.values(geometries).forEach((geom) => geom.dispose());
};
// eslint-disable-next-line react-hooks/exhaustive-deps
}, []);
useEffect(() => {
const currentMaterials = materials;
return () => {
Object.values(currentMaterials).forEach((mat) => mat.dispose());
};
}, [materials]);
useFrame((state) => {
if (!groupRef.current || !stanceAuraRef.current) return;
const time = state.clock.elapsedTime;
const breathScale = Math.sin(time * 2) * 0.02 + 1;
groupRef.current.scale.y = breathScale;
const auraPulse = Math.sin(time * 3) * 0.1 + 0.9;
stanceAuraRef.current.scale.setScalar(auraPulse);
if (
isAttacking &&
attackStartTimeRef.current !== null &&
attackMovementResultRef.current &&
originalPositionRef.current
) {
const currentTime = performance.now() / 1000;
const elapsedTime = currentTime - attackStartTimeRef.current;
const result = attackMovementResultRef.current;
const isRecoveryPhase =
elapsedTime >= result.lungeDuration &&
elapsedTime < result.totalDuration;
const isInAttackMovement = elapsedTime < result.totalDuration;
if (isInAttackMovement) {
const newPosition = attackPhysics.applyAttackMovement(
originalPositionRef.current,
result,
elapsedTime,
isRecoveryPhase
);
groupRef.current.position.copy(newPosition);
} else {
groupRef.current.position.copy(originalPositionRef.current);
}
} else if (!isAttacking && originalPositionRef.current) {
groupRef.current.position.copy(originalPositionRef.current);
}
});
return (
<group
ref={groupRef}
name="training-ai-character-3d"
>
{/* Main body - capsule representing the AI fighter */}
<mesh castShadow receiveShadow>
<primitive object={geometries.body} attach="geometry" />
<primitive object={materials.body} attach="material" />
</mesh>
{/* Head marker */}
<mesh position={[0, 1.2, 0]} castShadow>
<primitive object={geometries.head} attach="geometry" />
<primitive object={materials.head} attach="material" />
</mesh>
{/* Stance aura effect */}
<mesh ref={stanceAuraRef} position={[0, 0, 0]}>
<primitive object={geometries.aura} attach="geometry" />
<primitive object={materials.aura} attach="material" />
</mesh>
{/* Health indicator (rings around character) */}
{healthPercent < 1.0 && (
<mesh position={[0, 2, 0]} rotation={[Math.PI / 2, 0, 0]}>
<ringGeometry
args={[0.4, 0.5, 32, 1, 0, Math.PI * 2 * healthPercent]}
/>
<meshBasicMaterial
color={
healthPercent > 0.6
? KOREAN_COLORS.ACCENT_GREEN
: healthPercent > 0.3
? KOREAN_COLORS.SECONDARY_YELLOW
: KOREAN_COLORS.ACCENT_RED
}
transparent
opacity={0.8}
side={THREE.DoubleSide}
/>
</mesh>
)}
{/* Attack effect */}
{isAttacking && (
<pointLight
position={[0, 0.6, 0.5]}
intensity={1.5}
distance={3}
color={stanceColor}
decay={2}
/>
)}
</group>
);
};
export default TrainingAICharacter3D;
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