JustASplash/src/main/java/me/sashegdev/justasplash/splash/SplashManager.java

package me.sashegdev.justasplash.splash;

import me.sashegdev.justasplash.config.SplashConfig;

public class SplashManager {
    private static State state = State.IDLE;
    private static float alpha = 0f;
    private static long startTime = 0;
    private static float duration = 3.0f;

    enum State { IDLE, SHOWING }

    public static void show() {
        if (state == State.SHOWING) return;

        SplashAssetCache.load(SplashConfig.get());
        state = State.SHOWING;
        alpha = 1.0f;
        startTime = System.currentTimeMillis();
        duration = SplashConfig.get().duration;
        SplashSound.play();
    }

    public static void tick() {
        if (state != State.SHOWING) return;

        float elapsed = (System.currentTimeMillis() - startTime) / 1000f;
        alpha = 1.0f - (elapsed / duration);

        if (alpha <= 0f) {
            alpha = 0f;
            state = State.IDLE;
            SplashSound.stop();
        }
    }

    public static void renderOverlay() {
        if (state != State.SHOWING) return;
        if (alpha <= 0f) return;
        SplashRenderer.render(alpha);
    }

    public static boolean isShowing() { return state == State.SHOWING; }
}