Automatic daylight system

We created a daylight system that triggers a light to rotate 360 degrees around your scene, simulating the sun rotation around Earth.

  • First we need to get the time from the device your application is running on.
  • We then convert that time into a float value and store it in a Datatable.
    For example 18h30 = 18,5.
  • The next operation is to divide 360 degrees by 24 hours, which gives us a 15 degree increment per hour.
  • Lastly, we multiply the float value by 15 to get the adequate angle for the light, depending on the time it is on your device.

The sunlight is contained in a dummy object onto which the rotation transformation is applied every time the time changes.

You can add new rules to this by using the Property changed event.

Open your Valkyrie Project in the editor, then copy & paste the snippet below to test it.
You just need to select the layer or entity you want to paste this daylight system in your Valkyrie timeline and then paste it (CTRL + V).

Template:Light:Day-Night-System(DataTable)
---VLK-BEGIN---
<VlkSnippet>
    <Entity classname="DataTable" name="Day-Night-System">
        <Base group="DataTable" flags="LocalTimeline|LocalStatus|NotifyPropertyChanged" enabled="1"/>
        <Transform world_matrix="Matrix(-0.258819,-2.36333e-08,0.965926,0,-1.93715e-07,1,0,0,-0.965926,1.76028e-07,-0.258819,0,0,0,0,1)" flags="InheritPositionX|InheritPositionY|InheritPositionZ|InheritRotation"/>
        <Properties Time="12" Minutes="0" Hours="0" Angle="10"/>
        <Children>
            <Entity classname="Dummy" name="Daylight-Target">
                <Base group="Dummy" flags="" enabled="1"/>
                <Transform local_matrix="Matrix(1,0,0,0,0,1,0,0,0,0,1,0,1.22465e-16,-1,0,1)" flags="InheritPositionX|InheritPositionY|InheritPositionZ|InheritRotation"/>
                <Timeline>
                    <Timelines>
                        <Timeline
                            name="Default"
                            playback="Playing"
                            stop_when_reset="0"
                            loop="0"
                            reversed="0"
                            ping_pong_loop="0"
                            speed="1"
                            start_time="0"
                            end_time="10"
                            current_time="0.45011"
                            event_class=""/>
                    </Timelines>
                </Timeline>
            </Entity>
            <Entity classname="Dummy" name="Daylight-Look-At">
                <Base group="Dummy" flags="" enabled="1"/>
                <Transform local_matrix="Matrix(1,0,0,0,0,1,0,0,0,0,1,0,1.22465e-16,-1,0,1)" flags="InheritPositionX|InheritPositionY|InheritPositionZ|InheritRotation"/>
                <Timeline>
                    <Timelines>
                        <Timeline
                            name="Default"
                            playback="Playing"
                            stop_when_reset="0"
                            loop="0"
                            reversed="0"
                            ping_pong_loop="0"
                            speed="1"
                            start_time="0"
                            end_time="10"
                            current_time="0.45011"
                            event_class="">
                            <Action
                                name="AnimMoveTo"
                                desc="AnimMoveTo"
                                start_time="0"
                                end_time="10"
                                enabled="1"
                                target=""
                                dest="Daylight-Target"
                                spring_s="10"
                                spring_e="1"
                                snap_radius="0.001"/>
                        </Timeline>
                    </Timelines>
                </Timeline>
            </Entity>
            <Entity classname="Dummy" name="Daylight-System">
                <Base group="Dummy" flags="" enabled="1"/>
                <Transform local_matrix="Matrix(1,1.22465e-16,0,0,0,0,1,0,1.22465e-16,-1,0,0,0,0,0,1)" flags="InheritPositionX|InheritPositionY|InheritPositionZ|InheritRotation"/>
                <Children>
                    <Entity classname="Primitive" name="Primitive#8F3F">
                        <Base group="primitive" flags="Relative" enabled="1"/>
                        <Transform local_matrix="Matrix(1,0,0,0,0,1,-5.55112e-17,0,0,5.55112e-17,1,0,0,0,0,1)" flags="InheritPositionX|InheritPositionY|InheritPositionZ|InheritRotation"/>
                        <Primitive type="Box" draw="1" physics="1" tess="Vec2(10,10)" mass="0" uv_translate="Vec2(0,0)" uv_scale="Vec2(1,1)" uv_rotate="0"/>
                        <Children>
                            <Entity classname="Light" name="Sun-Light">
                                <Base group="light" flags="Relative" enabled="1"/>
                                <Transform local_matrix="Matrix(0,0.999391,0.0348995,0,-1,-1.52551e-09,4.36848e-08,0,4.37114e-08,-0.0348995,0.999391,0,0,6.6479,-27.0697,0)" flags="InheritPositionX|InheritPositionY|InheritPositionZ|InheritRotation|InheritScale"/>
                                <Light
                                    type="Directional"
                                    flags="Attenuation|CastShadows|Specular"
                                    cosine_bias="-0.1"
                                    near_clip_plane="10"
                                    far_clip_plane="0"
                                    range="5000"
                                    spot_inner="1.0472"
                                    spot_outer="1.5708"
                                    intensity="2"
                                    diffuse="Vec3(1,1,1)"
                                    specular="Vec3(1,1,1)"
                                    shadow_color="Vec3(0.0499247,0.0752094,0.115667)"
                                    shadow_res="4096"
                                    shadow_bias="-0.77"
                                    shadow_blur="1"
                                    shadow_fov="0"
                                    cookie=""
                                    ibl_diffuse="cubemap/CNTTower_probe_128.dds"
                                    ibl_specular="cubemap/CNTower/OutputCube.dds"/>
                                <Timeline>
                                    <Timelines>
                                        <Timeline
                                            name="Default"
                                            playback="Playing"
                                            stop_when_reset="0"
                                            loop="0"
                                            reversed="0"
                                            ping_pong_loop="0"
                                            speed="1"
                                            start_time="0"
                                            end_time="10"
                                            current_time="0.45011"
                                            event_class=""/>
                                    </Timelines>
                                </Timeline>
                            </Entity>
                        </Children>
                        <Materials>
                            <Material name="Default" class="" flags="" blend_mode="NoBlending">
                                <Channels>
                                    <Channel type="Opacity" enabled="0" color="Vec4(0,0,0,1)" sampler_index="-1" texture="" texture_flags="eTextureFlags.Default"/>
                                </Channels>
                            </Material>
                        </Materials>
                        <Timeline>
                            <Timelines>
                                <Timeline
                                    name="Default"
                                    playback="Playing"
                                    stop_when_reset="0"
                                    loop="0"
                                    reversed="0"
                                    ping_pong_loop="0"
                                    speed="1"
                                    start_time="0"
                                    end_time="10"
                                    current_time="0.45011"
                                    event_class=""/>
                            </Timelines>
                        </Timeline>
                    </Entity>
                </Children>
                <Timeline>
                    <Timelines>
                        <Timeline
                            name="Default"
                            playback="Playing"
                            stop_when_reset="0"
                            loop="0"
                            reversed="0"
                            ping_pong_loop="0"
                            speed="1"
                            start_time="0"
                            end_time="10"
                            current_time="0.45011"
                            event_class="">
                            <Action name="LookAtEntity" desc="LookAtEntity" start_time="0" end_time="10" enabled="1" target="" look_at="Daylight-Look-At" forward="Vec3(0,0,1)" mask="Vec3(1,1,1)"/>
                        </Timeline>
                    </Timelines>
                </Timeline>
            </Entity>
        </Children>
        <Timeline>
            <Timelines>
                <Timeline
                    name="Default"
                    playback="Playing"
                    stop_when_reset="0"
                    loop="1"
                    reversed="0"
                    ping_pong_loop="0"
                    speed="1"
                    start_time="0"
                    end_time="2"
                    current_time="0.45011"
                    event_class="">
                    <Action
                        name="EntitySetProperty"
                        desc="Get-Hour"
                        start_time="0"
                        end_time="1"
                        enabled="1"
                        target=""
                        property="Hours"
                        type="Float32"
                        start_expr="FormatCurrentTime(&quot;HH&quot;)"
                        end_expr=""
                        finish_anim="0"/>
                    <Action
                        name="EntitySetProperty"
                        desc="Get-Minutes"
                        start_time="0"
                        end_time="1"
                        enabled="1"
                        target=""
                        property="Minutes"
                        type="Float32"
                        start_expr="FormatCurrentTime(&quot;mm&quot;)"
                        end_expr=""
                        finish_anim="0"/>
                    <Action
                        name="EntitySetProperty"
                        desc="Get-Float-Time"
                        start_time="0"
                        end_time="1"
                        enabled="1"
                        target=""
                        property="Time"
                        type="Float32"
                        start_expr="(dt://Day-Night-System/@Minutes) / 60 + dt://Day-Night-System/@Hours)"
                        end_expr=""
                        finish_anim="0"/>
                    <Action
                        name="EntitySetProperty"
                        desc="Set-Angle"
                        start_time="0"
                        end_time="1"
                        enabled="1"
                        target=""
                        property="Angle"
                        type="Int32"
                        start_expr="(dt://Day-Night-System/@Time)  * 15)"
                        end_expr=""
                        finish_anim="0"/>
                </Timeline>
                <Timeline
                    name="PropertyChanged"
                    playback="Playing"
                    stop_when_reset="1"
                    loop="0"
                    reversed="0"
                    ping_pong_loop="0"
                    speed="1"
                    start_time="0"
                    end_time="2"
                    current_time="0.466667"
                    event_class="PropertyChanged"
                    Property="Angle"
                    Type="Vec3"
                    Value="0"
                    Compare="Always"
                    TriggerEveryTime="1">
                    <Action
                        name="EntitySetProperty"
                        desc="EntitySetProperty"
                        start_time="0"
                        end_time="1"
                        enabled="1"
                        target="Daylight-Target"
                        property="position"
                        type="Vec3"
                        start_expr="dt://Daylight-System/@position + (Vec3(sin(Rad(dt://Day-Night-System/@Angle)), cos(Rad(dt://Day-Night-System/@Angle)), 0)))*(10000)/ 10)"
                        end_expr=""
                        finish_anim="1"/>
                </Timeline>
            </Timelines>
        </Timeline>
    </Entity>
</VlkSnippet>
---VLK-END---