This animation uses 50 threads: 1 for launch, 4 for the lava background, and 45 for the lightbeam overlay. The lightbeam overlay has the highest z-order to make it topmost.
Glowscript:
// DEVICE (modify with care)
// Elektra simulator
device: name = 'simulator-elektra-20'
device: type = 'sim'
device: tickIntervalMillisecs = '50' // increase to reduce CPU load.
device: protocolVersion = '1.0'
device: ledCount = '20'
device: ramSpaceBytes = '25000' // set an animation size limit in memory.
device: romSpaceBytes = '200000' // set an animation size limit on disk.
// DEFINES (modify as needed)
// LED defines:
define: innerLeds = '[1-4]' // alias for inner-ring leds.
define: middleLeds = '[5-12]'
define: edgeLeds = '[13-20]'
define: allLeds = '[1-20]'
// Color defines:
define: red = '(25,0,0,1)'
define: green = '(0,25,0,1)'
define: blue = '(0,0,25,1)'
define: yellow = '(25,25,0,1)'
define: white = '(10,10,10,2)'
define: orange = '(25,16,0,1)'
define: purple = '(25,0,25,1)'
define: off = '(0,0,0,1)'
// CODE
// Simultaneously launches 2 functions then exits.
@start // mandatory function name for code launch.
callAsync: @funcLava (zOrder=1) // launch function asynchronously.
callAsync: @funcLightbeam (zOrder=2) // launch function asynchronously (top animation).
// Asynchronously launches 3 functions at staggered intervals then exits.
@funcLava
glowRamp: innerLeds off to red in 400ms // transition led(s) color.
callAsync: @funcLavaInnerRing // launch function asynchronously.
glowRamp: middleLeds off to red in 400ms // transition led(s) color.
callAsync: @funcLavaMiddleRing // launch function asynchronously.
glowRamp: edgeLeds off to red in 400ms
callAsync: @funcLavaEdgeRing
// Continuously cycles inner-ring colors.
@funcLavaInnerRing
here: start_tag // set bookmark.
glowRamp: innerLeds red to orange in 1s // transition led(s) color.
glowRamp: innerLeds orange to yellow in 1s
glowRamp: innerLeds yellow to green in 1s
glowRamp: innerLeds green to blue in 1s
glowRamp: innerLeds blue to purple in 1s
glowRamp: innerLeds purple to red in 1s
goto: start_tag // loop back to bookmark.
// Continuously cycles middle-ring colors.
@funcLavaMiddleRing
here: start_tag // set bookmark.
glowRamp: middleLeds red to orange in 1s // transition led(s) color.
glowRamp: middleLeds orange to yellow in 1s
glowRamp: middleLeds yellow to green in 1s
glowRamp: middleLeds green to blue in 1s
glowRamp: middleLeds blue to purple in 1s
glowRamp: middleLeds purple to red in 1s
goto: start_tag // loop back to bookmark.
// Continuously cycles edge-ring colors.
@funcLavaEdgeRing
here: start_tag // set bookmark.
glowRamp: edgeLeds red to orange in 1s // transition led(s) color.
glowRamp: edgeLeds orange to yellow in 1s
glowRamp: edgeLeds yellow to green in 1s
glowRamp: edgeLeds green to blue in 1s
glowRamp: edgeLeds blue to purple in 1s
glowRamp: edgeLeds purple to red in 1s
goto: start_tag // loop back to bookmark.
// Periodically runs the directional lightbeam animations.
@funcLightbeam
here: start_tag // set bookmark.
pause: 2s
call: @funcVerticalLightbeam // call function synchronously.
pause: 2s
call: @funcDiagonalRightLightbeam // call function synchronously.
pause: 2s
call: @funcHorizontalLightbeam // call function synchronously.
pause: 2s
call: @funcDiagonalLeftLightbeam // call function synchronously.
goto: start_tag // loop back to bookmark.
// Illuminates vertical lightbeam path then exits.
@funcVerticalLightbeam
callAsync: @funcVerticalLightbeamStep1 // call function asynchronously.
pause: 50ms
callAsync: @funcVerticalLightbeamStep2
pause: 50ms
callAsync: @funcVerticalLightbeamStep3
pause: 50ms
callAsync: @funcVerticalLightbeamStep4
pause: 50ms
callAsync: @funcVerticalLightbeamStep5
pause: 50ms
callAsync: @funcVerticalLightbeamStep6
pause: 50ms
callAsync: @funcVerticalLightbeamStep7
pause: 50ms
callAsync: @funcVerticalLightbeamStep8
pause: 50ms
callAsync: @funcVerticalLightbeamStep9
pause: 50ms
callAsync: @funcVerticalLightbeamStep10
pause: 50ms
callAsync: @funcVerticalLightbeamStep11
// Illuminates horizontal lightbeam path then exits.
@funcHorizontalLightbeam
callAsync: @funcHorizontalLightbeamStep1 // call function asynchronously.
pause: 50ms
callAsync: @funcHorizontalLightbeamStep2
pause: 50ms
callAsync: @funcHorizontalLightbeamStep3
pause: 50ms
callAsync: @funcHorizontalLightbeamStep4
pause: 50ms
callAsync: @funcHorizontalLightbeamStep5
pause: 50ms
callAsync: @funcHorizontalLightbeamStep6
pause: 50ms
callAsync: @funcHorizontalLightbeamStep7
pause: 50ms
callAsync: @funcHorizontalLightbeamStep8
pause: 50ms
callAsync: @funcHorizontalLightbeamStep9
pause: 50ms
callAsync: @funcHorizontalLightbeamStep10
pause: 50ms
callAsync: @funcHorizontalLightbeamStep11
// Illuminates diagonalLeft lightbeam path then exits.
@funcDiagonalLeftLightbeam
callAsync: @funcDiagonalLeftLightbeamStep1 // call function asynchronously.
pause: 50ms
callAsync: @funcDiagonalLeftLightbeamStep2
pause: 50ms
callAsync: @funcDiagonalLeftLightbeamStep3
pause: 50ms
callAsync: @funcDiagonalLeftLightbeamStep4
pause: 50ms
callAsync: @funcDiagonalLeftLightbeamStep5
pause: 50ms
callAsync: @funcDiagonalLeftLightbeamStep6
pause: 50ms
callAsync: @funcDiagonalLeftLightbeamStep7
pause: 50ms
callAsync: @funcDiagonalLeftLightbeamStep8
pause: 50ms
callAsync: @funcDiagonalLeftLightbeamStep9
pause: 50ms
callAsync: @funcDiagonalLeftLightbeamStep10
pause: 50ms
callAsync: @funcDiagonalLeftLightbeamStep11
// Illuminates diagonalRight lightbeam path then exits.
@funcDiagonalRightLightbeam
callAsync: @funcDiagonalRightLightbeamStep1 // call function asynchronously.
pause: 50ms
callAsync: @funcDiagonalRightLightbeamStep2
pause: 50ms
callAsync: @funcDiagonalRightLightbeamStep3
pause: 50ms
callAsync: @funcDiagonalRightLightbeamStep4
pause: 50ms
callAsync: @funcDiagonalRightLightbeamStep5
pause: 50ms
callAsync: @funcDiagonalRightLightbeamStep6
pause: 50ms
callAsync: @funcDiagonalRightLightbeamStep7
pause: 50ms
callAsync: @funcDiagonalRightLightbeamStep8
pause: 50ms
callAsync: @funcDiagonalRightLightbeamStep9
pause: 50ms
callAsync: @funcDiagonalRightLightbeamStep10
pause: 50ms
callAsync: @funcDiagonalRightLightbeamStep11
// Functions that pulse LED(s) along the vertical lightbeam path.
@funcVerticalLightbeamStep1
glowRamp: [13,20] white to off in 50ms
@funcVerticalLightbeamStep2
glowRamp: [12] white to off in 50ms
@funcVerticalLightbeamStep3
glowRamp: [5,11] white to off in 50ms
@funcVerticalLightbeamStep4
glowRamp: [14,19] white to off in 50ms
@funcVerticalLightbeamStep5
glowRamp: [2,3] white to off in 50ms
@funcVerticalLightbeamStep6
glowRamp: [6,10] white to off in 50ms
@funcVerticalLightbeamStep7
glowRamp: [1,4] white to off in 50ms
@funcVerticalLightbeamStep8
glowRamp: [15,18] white to off in 50ms
@funcVerticalLightbeamStep9
glowRamp: [7,9] white to off in 50ms
@funcVerticalLightbeamStep10
glowRamp: [8] white to off in 50ms
@funcVerticalLightbeamStep11
glowRamp: [16,17] white to off in 50ms
// Functions that pulse LED(s) along the horizontal lightbeam path.
@funcHorizontalLightbeamStep1
glowRamp: [14,15] white to off in 50ms
@funcHorizontalLightbeamStep2
glowRamp: [6] white to off in 50ms
@funcHorizontalLightbeamStep3
glowRamp: [5,7] white to off in 50ms
@funcHorizontalLightbeamStep4
glowRamp: [13,16] white to off in 50ms
@funcHorizontalLightbeamStep5
glowRamp: [3,4] white to off in 50ms
@funcHorizontalLightbeamStep6
glowRamp: [8,12] white to off in 50ms
@funcHorizontalLightbeamStep7
glowRamp: [1,2] white to off in 50ms
@funcHorizontalLightbeamStep8
glowRamp: [17,20] white to off in 50ms
@funcHorizontalLightbeamStep9
glowRamp: [9,11] white to off in 50ms
@funcHorizontalLightbeamStep10
glowRamp: [10] white to off in 50ms
@funcHorizontalLightbeamStep11
glowRamp: [18,19] white to off in 50ms
// Functions that pulse LED(s) along the diagonal-left lightbeam path.
@funcDiagonalLeftLightbeamStep1
glowRamp: [15,16] white to off in 50ms
@funcDiagonalLeftLightbeamStep2
glowRamp: [7] white to off in 50ms
@funcDiagonalLeftLightbeamStep3
glowRamp: [6,8] white to off in 50ms
@funcDiagonalLeftLightbeamStep4
glowRamp: [14,17] white to off in 50ms
@funcDiagonalLeftLightbeamStep5
glowRamp: [4] white to off in 50ms
@funcDiagonalLeftLightbeamStep6
glowRamp: [5,9,1,3] white to off in 50ms
@funcDiagonalLeftLightbeamStep7
glowRamp: [2] white to off in 50ms
@funcDiagonalLeftLightbeamStep8
glowRamp: [13,18] white to off in 50ms
@funcDiagonalLeftLightbeamStep9
glowRamp: [10,12] white to off in 50ms
@funcDiagonalLeftLightbeamStep10
glowRamp: [11] white to off in 50ms
@funcDiagonalLeftLightbeamStep11
glowRamp: [19,20] white to off in 50ms
// Functions that pulse LED(s) along the diagonal-right lightbeam path.
@funcDiagonalRightLightbeamStep1
glowRamp: [17,18] white to off in 50ms
@funcDiagonalRightLightbeamStep2
glowRamp: [9] white to off in 50ms
@funcDiagonalRightLightbeamStep3
glowRamp: [10,8] white to off in 50ms
@funcDiagonalRightLightbeamStep4
glowRamp: [16,19] white to off in 50ms
@funcDiagonalRightLightbeamStep5
glowRamp: [1] white to off in 50ms
@funcDiagonalRightLightbeamStep6
glowRamp: [11,2,4,7] white to off in 50ms
@funcDiagonalRightLightbeamStep7
glowRamp: [3] white to off in 50ms
@funcDiagonalRightLightbeamStep8
glowRamp: [20,15] white to off in 50ms
@funcDiagonalRightLightbeamStep9
glowRamp: [12,6] white to off in 50ms
@funcDiagonalRightLightbeamStep10
glowRamp: [5] white to off in 50ms
@funcDiagonalRightLightbeamStep11
glowRamp: [13,14] white to off in 50ms