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package monkstone.noise;

/**
 *
 * @author Martin Prout
 */
public class NoiseGenerator implements Noise {

    private Noise implementation;
    private NoiseMode mode;
    private Long seed;

    public NoiseGenerator() {
        seed = System.currentTimeMillis();
        this.implementation = new OpenSimplex2F(seed);
        this.mode = NoiseMode.DEFAULT;
    }

    @Override
    public void noiseMode(NoiseMode mode) {
        switch (mode) {
            case DEFAULT:
                if (this.mode != NoiseMode.DEFAULT) {
                    this.implementation = new OpenSimplex2F(seed);
                    this.mode = NoiseMode.DEFAULT;
                }
                break;
            case OPEN_SMOOTH:
                if (this.mode != NoiseMode.OPEN_SMOOTH) {
                    this.implementation = new OpenSimplex2S(seed);
                    this.mode = NoiseMode.OPEN_SMOOTH;
                    break;
                }
            case SMOOTH_TERRAIN:
                if (this.mode != NoiseMode.SMOOTH_TERRAIN) {
                    this.implementation = new SmoothTerrain(seed);
                    this.mode = NoiseMode.SMOOTH_TERRAIN;
                }
                break;
            case FAST_TERRAIN:
                if (this.mode != NoiseMode.FAST_TERRAIN) {
                    this.implementation = new FastTerrain(seed);
                    this.mode = NoiseMode.FAST_TERRAIN;
                }
                break;
            default:
                this.implementation = new OpenSimplex2F(seed);
                this.mode = NoiseMode.DEFAULT;
        }
    }

    public NoiseMode noiseMode() {
        return this.mode;
    }

    @Override
    public float noise(float x, float y, float z) {
        return implementation.noise(x, y, z);
    }

    @Override
    public float noise(float x, float y, float z, float w) {
        return implementation.noise(x, y, z, w);
    }

    @Override
    public void noiseSeed(long seed) {
        this.seed = seed;
    }
}