WorldDayLightSensor.java 文件源码

public int updatePower(World worldIn, BlockPos pos) {
    if (worldIn.provider.hasSkyLight()) {
        int i = worldIn.getLightFor(EnumSkyBlock.SKY, pos) - worldIn.getSkylightSubtracted();
        float f = worldIn.getCelestialAngleRadians(1.0F);
        float f1 = f < (float) Math.PI ? 0.0F : (float) Math.PI * 2F;
        f = f + (f1 - f) * 0.2F;
        i = Math.round(i * MathHelper.cos(f));
        i = MathHelper.clamp(i, 0, 15);
        return i;
    }
    return 0;
}