创建一个熔岩流动效果着色器，使用噪声函数和湍流效果模拟高温熔岩，支持温度、流动速度、粘度等参数调节，提供三种熔岩类型可选。

uniform float uTime;
uniform float uFlowSpeed;
uniform float uViscosity;
uniform float uTurbulence;

void main() {
    vUv = uv;
    vPosition = position;
    vNormal = normal;

    // 熔岩流动效果
    float flow = sin(position.x * 3.0 + uTime * uFlowSpeed) *
                cos(position.y * 4.0 + uTime * uFlowSpeed * 0.8) *
                sin(position.z * 3.0 + uTime * uFlowSpeed * 0.6);

    // 湍流效果
    float turbulence = sin(position.x * 6.0 + uTime * uTurbulence * 2.0) *
                      cos(position.y * 8.0 + uTime * uTurbulence * 1.5);

    // 粘度影响
    float viscosityEffect = mix(0.1, 0.3, uViscosity);

    vec3 newPosition = position + normal * (flow + turbulence) * viscosityEffect;

    gl_Position = projectionMatrix * modelViewMatrix * vec4(newPosition, 1.0);
}

float lava(vec2 uv, float temperature) {
    float lavaField = 0.0;

    // 多层熔岩
    lavaField += sin(uv.x * 8.0 + uTime * 0.4) *
                cos(uv.y * 10.0 + uTime * 0.6);
    lavaField += sin(uv.x * 12.0 + uTime * 0.8) *
                cos(uv.y * 14.0 + uTime * 1.0) * 0.7;
    lavaField += sin(uv.x * 16.0 + uTime * 1.2) *
                cos(uv.y * 18.0 + uTime * 1.4) * 0.4;

    return lavaField * temperature;
}

float bubbles(vec2 uv, float density) {
    if(!uShowBubbles) return 0.0;

    float bubbleField = 0.0;
    for(int i = 0; i < 20; i++) {
        vec2 bubblePos = vec2(
            noise(vec2(float(i) * 0.123, 0.456)),
            noise(vec2(float(i) * 0.456, 0.789))
        );
        float dist = distance(uv, bubblePos);
        float bubbleSize = noise(vec2(float(i) * 0.789, 0.123)) * 0.1 + 0.05;
        float bubbleLife = mod(uTime * 0.5 + float(i) * 3.0, 6.28);
        float bubbleIntensity = sin(bubbleLife) * 0.5 + 0.5;
        bubbleField += exp(-dist * 50.0) * bubbleIntensity * density;
    }
    return bubbleField;
}

uniforms: {
    uTime: { value: 0.0 },
    uTemperature: { value: 0.8 },
    uFlowSpeed: { value: 0.6 },
    uViscosity: { value: 0.7 },
    uGlowIntensity: { value: 1.2 },
    uTurbulence: { value: 0.8 },
    uLavaType: { value: 0 },
    uShowBubbles: { value: true }
}