Back to Home

ESO Lua File v100032

pregame/pregameanimatedbackground/gamepad/morrowindbackground.lua

[◄ back to folders ]
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
--Camera Wander
local CameraWander = ZO_Object:Subclass()
function CameraWander:New(...)
    local obj = ZO_Object.New(self)
    obj:Initialize(...)
    return obj
end
function CameraWander:Initialize(speed, magnitude)
    self.speed = speed
    self.magnitude = magnitude
    self.startX = 0
    self.startY = 0
    self.currentX = 0
    self.currentY = 0
end
function CameraWander:Start()
    self:AcquireTarget()
end
do
    local MIN_DIFFERENCE_RADIANS = math.pi / 4
    local NEW_ANGLE_RANGE_RADIANS = math.pi
    local TWO_PI = 2 * math.pi
    function CameraWander:AcquireTarget()
        if not self.targetAngle then
            --Choose any angle the first time
            self.targetAngle = zo_random() * TWO_PI
        else
            --Subsequent times, choose angles that are at least MIN_DIFFERENCE_RADIANS away from the last angle.
            self.targetAngle = zo_mod(self.targetAngle + MIN_DIFFERENCE_RADIANS + zo_random() * NEW_ANGLE_RANGE_RADIANS, TWO_PI)
        end
        self.targetX = math.cos(self.targetAngle) * self.magnitude
        self.targetY = math.sin(self.targetAngle) * self.magnitude
        local diffX = self.targetX - self.startX
        local diffY = self.targetY - self.startY
        local distance = zo_sqrt(diffX * diffX + diffY * diffY)
        self.startTimeS = GetGameTimeMilliseconds() / 1000
        --Compute the end time from the distance and speed so the camera always moves at the same speed
        self.endTimeS = self.startTimeS + distance / self.speed
    end
end
function CameraWander:Update(timeS)
    if self.startTimeS then
        if timeS > self.endTimeS then
            --The new start is the old end
            self.startX = self.targetX
            self.startY = self.targetY
            self:AcquireTarget()
        end
        
        local timeFromStartS = timeS - self.startTimeS
        local progress = timeFromStartS / (self.endTimeS - self.startTimeS)
        progress = ZO_EaseInOutQuadratic(progress)
        self.currentX = zo_lerp(self.startX, self.targetX, progress)
        self.currentY = zo_lerp(self.startY, self.targetY, progress)
    end
    
    return self.currentX, self.currentY
end
local MorrowindBackground = ZO_Object:Subclass()
local GROUND_AREA_MIN_WIDTH = 1920
local GROUND_AREA_MAX_WIDTH = 2048
local GROUND_AREA_MIN_HEIGHT = 1080
local GROUND_AREA_MAX_HEIGHT = 1152
local GROUND_AREA_TEXTURE_SIZE = 2048
local GROUND_AREA_MIN_WIDTH_PERCENT_OF_TEXTURE_SIZE = GROUND_AREA_MIN_WIDTH / GROUND_AREA_TEXTURE_SIZE
local GROUND_AREA_MAX_WIDTH_PERCENT_OF_TEXTURE_SIZE = GROUND_AREA_MAX_WIDTH / GROUND_AREA_TEXTURE_SIZE
local GROUND_AREA_MIN_HEIGHT_PERCENT_OF_TEXTURE_SIZE = GROUND_AREA_MIN_HEIGHT / GROUND_AREA_TEXTURE_SIZE
local GROUND_AREA_MAX_HEIGHT_PERCENT_OF_TEXTURE_SIZE = GROUND_AREA_MAX_HEIGHT / GROUND_AREA_TEXTURE_SIZE
local GROUND_AREA_DEPTH = 0
local GROUND_AREA_ASPECT_RATIO = GROUND_AREA_MAX_WIDTH / GROUND_AREA_MAX_HEIGHT
local GROUND_DEPTH = GROUND_AREA_DEPTH
local SMOKE_DEPTH = -0.01
local LAVA_BURST_DEPTH = -0.01
local SMOKE_DEPTH = -0.3
local CLOUDS_DEPTH = -0.6
local CAMERA_END_DEPTH = -0.8
local CAMERA_START_DEPTH = -1
local CAMERA_WANDER_SPEED = 2
local CAMERA_WANDER_DISTANCE = 30
local SMOKE_1_ORIGIN_X = -450
local SMOKE_1_ORIGIN_Y = -420
local SMOKE_1_DELTA_X = 50
local SMOKE_1_DELTA_Y = 50
local SMOKE_1_WIDTH = 800
local SMOKE_1_HEIGHT = 700
local SMOKE_2_ORIGIN_X = 250
local SMOKE_2_ORIGIN_Y = 300
local SMOKE_2_DELTA_X = 100
local SMOKE_2_DELTA_Y = 50
local SMOKE_2_WIDTH = 700
local SMOKE_2_HEIGHT = 700
local SMOKE_SPEED_FACTOR = 0.05
local LAVA_GLOW_SLOW_SPEED_FACTOR = 1
local LAVA_GLOW_SLOW_AMOUNT = 0.2
local LAVA_GLOW_FAST_SPEED_FACTOR = 0.3
local LAVA_GLOW_FAST_AMOUNT = 0.1
ZO_MORROWIND_BACKGROUND_FADE_DURATION_MS = 500
ZO_MORROWIND_BACKGROUND_ZOOM_START_MS = 0
ZO_MORROWIND_BACKGROUND_ZOOM_DURATION_MS = 5000
--Lava Burst
local LavaBurst = ZO_Object:Subclass()
LavaBurst.id = 0
function LavaBurst:New(...)
    local obj = ZO_Object.New(self)
    obj:Initialize(...)
    return obj
end
function LavaBurst:Initialize(sceneGraph, rootNode)
    self.sceneGraph = sceneGraph
    self.node = sceneGraph:CreateNode(string.format("lavaBurst%d", LavaBurst.id))
    LavaBurst.id = LavaBurst.id + 1
    self.node:SetParent(rootNode)
    self.node:SetZ(LAVA_BURST_DEPTH)
    self:SetSparksSize(6)
end
function LavaBurst:InitializeSparksParticleSystem()
    local QuickBendEasing = ZO_GenerateCubicBezierEase(0.38, 0.21, 0.75, 0.24)
    local LateBendEasing = ZO_GenerateCubicBezierEase(0.38, 0.21, 0.84, 0.24)
    local BurstEasing = ZO_GenerateCubicBezierEase(0, 0.72, 0.46, 0.98)
    local sparkStartColorGenerator = ZO_WeightedChoiceGenerator:New(
        {0.7, 0.7, 0.4}, 0.1,
        {0.8, 0.3, 0.3}, 0.3,
        {1.0, 1.0, 0.0}, 0.3,
        {1.0, 0.5, 0.0}, 0.3)
    local AlphaEasing = ZO_GenerateCubicBezierEase(0.75, 0.25, 0.75, 0.25)
    local ColorEasing = ZO_GenerateCubicBezierEase(.71,.51,.63,.89)
    local sparksParticleSystem = ZO_SceneGraphParticleSystem:New(ZO_BentArcParticle_SceneGraph, self.node)
    sparksParticleSystem:SetParentControl(self.sceneGraph:GetCanvasControl())
    sparksParticleSystem:SetBurstEasing(BurstEasing)
    sparksParticleSystem:SetParticleParameter("BlendMode", TEX_BLEND_MODE_ADD)
    sparksParticleSystem:SetParticleParameter("Texture", "EsoUI/Art/PregameAnimatedBackground/ember.dds")
    sparksParticleSystem:SetParticleParameter("StartColorR", "StartColorG", "StartColorB", sparkStartColorGenerator)
    sparksParticleSystem:SetParticleParameter("EndColorR", 0.5)
    sparksParticleSystem:SetParticleParameter("EndColorG", 0.4)
    sparksParticleSystem:SetParticleParameter("EndColorB", 0.2)
    sparksParticleSystem:SetParticleParameter("ColorEasing", ColorEasing)
    sparksParticleSystem:SetParticleParameter("StartAlpha", 0.8)
    sparksParticleSystem:SetParticleParameter("EndAlpha", 0.0)
    sparksParticleSystem:SetParticleParameter("AlphaEasing", AlphaEasing)
    sparksParticleSystem:SetParticleParameter("StartScale", "EndScale", ZO_UniformRangeGenerator:New(0.2, 0.8, 0.1, 0.5))
    sparksParticleSystem:SetParticleParameter("BentArcAzimuthStartRadians", 0)
    sparksParticleSystem:SetParticleParameter("BentArcAzimuthChangeRadians", 0)
    sparksParticleSystem:SetParticleParameter("BentArcBendEasing", ZO_WeightedChoiceGenerator:New(QuickBendEasing, 0.4, LateBendEasing, 0.6))
    sparksParticleSystem:SetParticleParameter("StartOffsetZ", 0)
    sparksParticleSystem:SetParticleParameter("EndOffsetZ", -0.1)
    self.sparksParticleSystem = sparksParticleSystem
end
function LavaBurst:SetSparksMinMaxDuration(minDurationS, maxDurationS)
    self.sparksParticleSystem:SetParticleParameter("DurationS", ZO_UniformRangeGenerator:New(minDurationS, maxDurationS))
end
function LavaBurst:SetSparksSize(sparksSize)
    self.sparksSize = sparksSize
end
function LavaBurst:SetSpawnLine(x1, y1, x2, y2)
    self.positionX = (x1 + x2) * 0.5
    self.positionY = (y1 + y2) * 0.5
    self.spawnX1 = x1 - self.positionX
    self.spawnY1 = y1 - self.positionY
    self.spawnX2 = x2 - self.positionX
    self.spawnY2 = y2 - self.positionY
end
function LavaBurst:SetSparksAngleAndSpread(angleRadians, spreadRadians)
    self.sparksParticleSystem:SetParticleParameter("BentArcElevationStartRadians", ZO_UniformRangeGenerator:New(angleRadians - spreadRadians, angleRadians + spreadRadians))
end
function LavaBurst:SetSparksBend(minBendRadians, maxBendRadians)
    self.sparksParticleSystem:SetParticleParameter("BentArcElevationChangeRadians", ZO_UniformRangeGenerator:New(minBendRadians, maxBendRadians))
end
function LavaBurst:SetBurst(numSparksParticles, durationS, phaseS, cycleDurationS)
    self.sparksParticleSystem:SetBurst(numSparksParticles, durationS, phaseS, cycleDurationS)
end
function LavaBurst:SetSparksMinMaxVelocity(minVelocity, maxVelocity)
    self.sparksMinVelocity = minVelocity
    self.sparksMaxVelocity = maxVelocity
end
function LavaBurst:UpdateMagnification(magnification)
    local sparksSize = self.node:ComputeSizeForDepth(self.sparksSize * magnification, self.sparksSize * magnification, 0, CAMERA_START_DEPTH)
    self.sparksParticleSystem:SetParticleParameter("Size", sparksSize)
    local minSparksVelocity = self.node:ComputeSizeForDepth(self.sparksMinVelocity * magnification, 0, 0, CAMERA_START_DEPTH)
    local maxSparksVelocity = self.node:ComputeSizeForDepth(self.sparksMaxVelocity * magnification, 0, 0, CAMERA_START_DEPTH)
    self.sparksParticleSystem:SetParticleParameter("BentArcVelocity", ZO_UniformRangeGenerator:New(minSparksVelocity, maxSparksVelocity))
    local spawnX1 = self.node:ComputeSizeForDepth(self.spawnX1 * magnification, 0, 0, CAMERA_START_DEPTH)
    local spawnY1 = self.node:ComputeSizeForDepth(self.spawnY1 * magnification, 0, 0, CAMERA_START_DEPTH)
    local spawnX2 = self.node:ComputeSizeForDepth(self.spawnX2 * magnification, 0, 0, CAMERA_START_DEPTH)
    local spawnY2 = self.node:ComputeSizeForDepth(self.spawnY2 * magnification, 0, 0, CAMERA_START_DEPTH)
    local offsetGenerator = ZO_UniformRangeGenerator:New(spawnX1, spawnX2, spawnY1, spawnY2)
    self.sparksParticleSystem:SetParticleParameter("StartOffsetX", "StartOffsetY", offsetGenerator)
    local offsetX, offsetY = self.node:ComputeSizeForDepth(self.positionX * magnification, self.positionY * magnification, 0, CAMERA_START_DEPTH)
    self.node:SetX(offsetX)
    self.node:SetY(offsetY)
end
function LavaBurst:Start()
    self.sparksParticleSystem:Start()
end
function LavaBurst:Stop()
    self.sparksParticleSystem:Stop()
end
--Cloud
local Cloud = ZO_Object:Subclass()
Cloud.id = 0
function Cloud:New(...)
    local cloud = ZO_Object.New(self)
    cloud:Initialize(...)
    return cloud
end
function Cloud:Initialize(sceneGraph, rootNode)
    self.sceneGraph = sceneGraph
    self.node = sceneGraph:CreateNode(string.format("cloud%d", Cloud.id))
    self.node:SetParent(rootNode)
    self.textureControl = CreateControlFromVirtual("Cloud", self.sceneGraph:GetCanvasControl(), "ZO_MorrowindBackgroundCloud", Cloud.id)
    self.node:AddControl(self.textureControl, 0, 0, 0)
    Cloud.id = Cloud.id + 1
end
function Cloud:SetStart(startX, startY)
    self.startX = startX
    self.startY = startY
end
function Cloud:SetEnd(endX, endY)
    self.endX = endX
    self.endY = endY
end
function Cloud:SetDuration(durationS)
    self.durationS = durationS
end
function Cloud:SetSize(size)
    self.size = size
end
function Cloud:SetDepth(depth)
    self.node:SetZ(depth)
end
function Cloud:SetPlayOffset(playOffsetS)
    self.playOffsetS = playOffsetS
end
function Cloud:Play()
    self.startTimeS  = (GetGameTimeMilliseconds() / 1000) - self.playOffsetS
end
function Cloud:UpdateMagnification(magnification)
    self.finalStartX = self.node:ComputeSizeForDepth(self.startX * magnification, 0, 0, CAMERA_START_DEPTH)
    self.finalEndX = self.node:ComputeSizeForDepth(self.endX * magnification, 0, 0, CAMERA_START_DEPTH)
    self.finalStartY = self.node:ComputeSizeForDepth(self.startY * magnification, 0, 0, CAMERA_START_DEPTH)
    self.finalEndY = self.node:ComputeSizeForDepth(self.endY * magnification, 0, 0, CAMERA_START_DEPTH)
    
    local finalSize = self.node:ComputeSizeForDepth(self.size * magnification, 0, 0, CAMERA_START_DEPTH)
    self.textureControl:SetDimensions(finalSize, finalSize)
end
function Cloud:OnUpdate(timeS)
    local timeInCycleS = (timeS - self.startTimeS) % self.durationS
    local progress = timeInCycleS / self.durationS
    local x = zo_lerp(self.finalStartX, self.finalEndX, progress)
    local y = zo_lerp(self.finalStartY, self.finalEndY, progress)
    self.node:SetX(x)
    self.node:SetY(y)
end
--Background
function MorrowindBackground:New(...)
    local obj = ZO_Object.New(self)
    obj:Initialize(...)
    return obj
end
function MorrowindBackground:Initialize(control)
    self.control = control
    self.canvasControl = control:GetNamedChild("Canvas")
    self.groundTexture = self.canvasControl:GetNamedChild("Ground")
    self.groundTexture2 = self.canvasControl:GetNamedChild("Ground2")
    self.smokeTexture1 = self.canvasControl:GetNamedChild("Smoke1")
    self.smokeTexture2 = self.canvasControl:GetNamedChild("Smoke2")
    
    PREGAME_ANIMATED_BACKGROUND_FRAGMENT = ZO_SimpleSceneFragment:New(control)
    PREGAME_ANIMATED_BACKGROUND_FRAGMENT:RegisterCallback("StateChange", function(oldState, newState)
        if newState == SCENE_SHOWING then
            self:Start()
        elseif newState == SCENE_HIDDEN then
            self:Stop()
        end
    end)
    control:SetHandler("OnUpdate", function(_, timeS) self:OnUpdate(timeS) end)
    control:RegisterForEvent(EVENT_SCREEN_RESIZED, function() self:OnScreenResized() end)
    self.sceneGraph = ZO_SceneGraph:New(self.canvasControl)
    self:ResizeSizes()
    self.cameraRootZ = CAMERA_START_DEPTH
    self.cameraWander = CameraWander:New(CAMERA_WANDER_SPEED, CAMERA_WANDER_DISTANCE)
    self.cameraWander:Start()
end
function MorrowindBackground:InitializeAnimations()
    self.showTimeline = ANIMATION_MANAGER:CreateTimelineFromVirtual("ZO_MorrowindBackgroundShowAnimation")
    self.showTimeline:GetAnimation(1):SetAnimatedControl(self.canvasControl)
    self.showTimeline:GetAnimation(2):SetUpdateFunction(function(...) self:OnZoomAnimationUpdate(...) end)
end
function MorrowindBackground:OnZoomAnimationUpdate(animation, progress)
    self.cameraRootZ = zo_lerp(CAMERA_START_DEPTH, CAMERA_END_DEPTH, progress)
end
function MorrowindBackground:AddParticles(particle)
    table.insert(self.particleSystems, particle)
end
do
    local CLOUD_SIZE = 1024
    local RIGHT_X = GROUND_AREA_MAX_WIDTH * 0.5 + CLOUD_SIZE * 0.5
    local LEFT_X = -RIGHT_X
    local TOP_Y = GROUND_AREA_MAX_HEIGHT * 0.5 + CLOUD_SIZE * 0.5
    local BOTTOM_Y = -TOP_Y
    function MorrowindBackground:AddCloud(offsetS, verticalOffset)
        local cloud = Cloud:New(self.sceneGraph, self.rootNode)
        cloud:SetStart(RIGHT_X, BOTTOM_Y + verticalOffset)
        cloud:SetEnd(LEFT_X, TOP_Y + verticalOffset)
        cloud:SetDuration(30)
        cloud:SetPlayOffset(offsetS)
        cloud:SetSize(CLOUD_SIZE)
        cloud:SetDepth(CLOUDS_DEPTH)
        table.insert(self.clouds, cloud)
    end
end
function MorrowindBackground:BuildSceneGraph()
    self.rootNode = self.sceneGraph:CreateNode("root")
    self.rootNode:SetParent(self.sceneGraph:GetCameraNode())
    self.groundNode = self.sceneGraph:CreateNode("ground")
    self.groundNode:SetParent(self.rootNode)
    self.groundNode:AddControl(self.groundTexture, 0, 0, GROUND_DEPTH)
    self.groundNode2 = self.sceneGraph:CreateNode("ground2")
    self.groundNode2:SetParent(self.rootNode)
    self.groundNode2:AddControl(self.groundTexture2, 0, 0, GROUND_DEPTH - 0.001)
    self.smokeNode1 = self.sceneGraph:CreateNode("smoke1")
    self.smokeNode1:SetParent(self.rootNode)
    self.smokeNode1:AddControl(self.smokeTexture1, 0, 0, SMOKE_DEPTH)
    self.smokeNode2 = self.sceneGraph:CreateNode("smoke2")
    self.smokeNode2:SetParent(self.rootNode)
    self.smokeNode2:AddControl(self.smokeTexture2, 0, 0, SMOKE_DEPTH)
    self.particleSystems = {}
    self.clouds = {}
    --Lava Bursts
    local NUM_SPARK_PARTICLES_AVERAGE = 120
    local CYCLE_LENGTH_S = 9
    
    local lavaBurst1 = LavaBurst:New(self.sceneGraph, self.rootNode)
    lavaBurst1:SetSpawnLine(-700, -500, -450, -500)
    lavaBurst1:SetBurst(NUM_SPARK_PARTICLES_AVERAGE, 1, 0, CYCLE_LENGTH_S)
    lavaBurst1:SetSparksMinMaxDuration(0.1, 2)
    lavaBurst1:SetSparksAngleAndSpread(math.rad(90), math.rad(10))
    lavaBurst1:SetSparksBend(math.rad(-40), math.rad(40))
    lavaBurst1:SetSparksMinMaxVelocity(350, 450)
    self:AddParticles(lavaBurst1)
    local lavaBurst2 = LavaBurst:New(self.sceneGraph, self.rootNode)
    lavaBurst2:SetSpawnLine(-300, -310, -260, -270)
    lavaBurst2:SetBurst(NUM_SPARK_PARTICLES_AVERAGE, 0.825, 1.17, CYCLE_LENGTH_S)
    lavaBurst2:SetSparksMinMaxDuration(0.1, 1.5)
    lavaBurst2:SetSparksAngleAndSpread(math.rad(125), math.rad(20))
    lavaBurst2:SetSparksBend(math.rad(-80), math.rad(20))
    lavaBurst2:SetSparksMinMaxVelocity(200, 250)
    self:AddParticles(lavaBurst2)
    local lavaBurst3 = LavaBurst:New(self.sceneGraph, self.rootNode)
    lavaBurst3:SetSpawnLine(375, 273, 405, 303)
    lavaBurst3:SetBurst(NUM_SPARK_PARTICLES_AVERAGE, 0.825, 1.667, CYCLE_LENGTH_S)
    lavaBurst3:SetSparksMinMaxDuration(0.1, 1.5)
    lavaBurst3:SetSparksAngleAndSpread(math.rad(330), math.rad(10))
    lavaBurst3:SetSparksBend(math.rad(-45), math.rad(45))
    lavaBurst3:SetSparksMinMaxVelocity(100, 150)
    self:AddParticles(lavaBurst3)
    local lavaBurst4 = LavaBurst:New(self.sceneGraph, self.rootNode)
    lavaBurst4:SetSpawnLine(-195, -375, -175, -325)
    lavaBurst4:SetBurst(NUM_SPARK_PARTICLES_AVERAGE, 1.333, 3, CYCLE_LENGTH_S)
    lavaBurst4:SetSparksMinMaxDuration(0.1, 1.5)
    lavaBurst4:SetSparksAngleAndSpread(math.rad(0), math.rad(25))
    lavaBurst4:SetSparksBend(math.rad(20), math.rad(40))
    lavaBurst4:SetSparksMinMaxVelocity(250, 250)
    self:AddParticles(lavaBurst4)
    local lavaBurst5 = LavaBurst:New(self.sceneGraph, self.rootNode)
    lavaBurst5:SetSpawnLine(-110, -195, -80, -145)
    lavaBurst5:SetBurst(NUM_SPARK_PARTICLES_AVERAGE, 1, 4.333, CYCLE_LENGTH_S)
    lavaBurst5:SetSparksMinMaxDuration(0.1, 1.5)
    lavaBurst5:SetSparksAngleAndSpread(math.rad(0), math.rad(25))
    lavaBurst5:SetSparksBend(math.rad(0), math.rad(40))
    lavaBurst5:SetSparksMinMaxVelocity(250, 250)
    self:AddParticles(lavaBurst5)
    local lavaBurst6 = LavaBurst:New(self.sceneGraph, self.rootNode)
    lavaBurst6:SetSpawnLine(180, 125, 230, 145)
    lavaBurst6:SetBurst(NUM_SPARK_PARTICLES_AVERAGE, 1.333, 6.333, CYCLE_LENGTH_S)
    lavaBurst6:SetSparksMinMaxDuration(0.1, 2.5)
    lavaBurst6:SetSparksAngleAndSpread(math.rad(320), math.rad(25))
    lavaBurst6:SetSparksBend(math.rad(-40), math.rad(-10))
    lavaBurst6:SetSparksMinMaxVelocity(150, 200)
    self:AddParticles(lavaBurst6)
    local lavaBurst7 = LavaBurst:New(self.sceneGraph, self.rootNode)
    lavaBurst7:SetSpawnLine(375, 273, 405, 303)
    lavaBurst7:SetBurst(NUM_SPARK_PARTICLES_AVERAGE, 1, 6.8, CYCLE_LENGTH_S)
    lavaBurst7:SetSparksMinMaxDuration(0.1, 1.5)
    lavaBurst7:SetSparksAngleAndSpread(math.rad(330), math.rad(20))
    lavaBurst7:SetSparksBend(math.rad(-35), math.rad(35))
    lavaBurst7:SetSparksMinMaxVelocity(100, 150)
    self:AddParticles(lavaBurst7)
    --Clouds
    --AddCloud(offsetS, yOffset)
    --1st 15s
    self:AddCloud(0, 0)
    self:AddCloud(7.5, 0)
    self:AddCloud(1.875, 200)
    self:AddCloud(9.375, 200)
    self:AddCloud(3.75, -200)
    self:AddCloud(11.25, -200)    
    self:AddCloud(5.625, 400)
    self:AddCloud(13.125, 400)
    self:AddCloud(7.5, -400)
    self:AddCloud(15, -400)
    --2nd 15s
    self:AddCloud(15, 0)
    self:AddCloud(22.5, 0)
    self:AddCloud(16.875, 200)
    self:AddCloud(26.375, 200)
    self:AddCloud(18.75, -200)
    self:AddCloud(26.25, -200)    
    self:AddCloud(20.625, 400)
    self:AddCloud(28.125, 400)
    self:AddCloud(22.5, -400)
    self:AddCloud(30, -400)
end
function MorrowindBackground:ResizeSizes()
    local canvasWidth, canvasHeight = GuiRoot:GetDimensions()
    local cameraZ = 0
    local groundAreaSize = 0
    if canvasHeight > 0 then
        local canvasAspectRatio = canvasWidth / canvasHeight        
        if canvasAspectRatio > GROUND_AREA_ASPECT_RATIO then
            --If there is extra width space then start with making the map area as tall as possible (right up the the edge of the min size that has to
            --be on screen). This will cover the most width.
            local heightPercentOfImage = GROUND_AREA_MIN_HEIGHT_PERCENT_OF_TEXTURE_SIZE
            local widthPercentOfImage = heightPercentOfImage * canvasAspectRatio
            --If the percentage of the map area that would be shown width wise is still larger than what's allowed
            if widthPercentOfImage > GROUND_AREA_MAX_WIDTH_PERCENT_OF_TEXTURE_SIZE then
                --Then size the map area to the width of the screen and compute the height from that (this will clip more into the min
                --area than desired but it can't be helped since we need to maintain the aspect ratio).
                widthPercentOfImage = GROUND_AREA_MAX_WIDTH_PERCENT_OF_TEXTURE_SIZE
                heightPercentOfImage = widthPercentOfImage / canvasAspectRatio
            end
            groundAreaSize = canvasHeight / heightPercentOfImage
        else
            --same algorithm but for extra height space
            local widthPercentOfImage = GROUND_AREA_MIN_WIDTH_PERCENT_OF_TEXTURE_SIZE
            local heightPercentOfImage = widthPercentOfImage / canvasAspectRatio
            if heightPercentOfImage > GROUND_AREA_MAX_HEIGHT_PERCENT_OF_TEXTURE_SIZE then
                heightPercentOfImage = GROUND_AREA_MAX_HEIGHT_PERCENT_OF_TEXTURE_SIZE
                widthPercentOfImage = heightPercentOfImage * canvasAspectRatio
            end
            groundAreaSize = canvasWidth / widthPercentOfImage
        end
    end
    --The ratio of the final map area to the reference size is used as a scale factor. The size of every other node is done in reference to the GROUND_AREA_TEXTURE_SIZE
    local magnification = groundAreaSize / GROUND_AREA_TEXTURE_SIZE
    self.groundTexture:SetDimensions(self.groundNode:ComputeSizeForDepth(GROUND_AREA_TEXTURE_SIZE * magnification, GROUND_AREA_TEXTURE_SIZE * magnification, GROUND_DEPTH, CAMERA_START_DEPTH))
    self.groundTexture2:SetDimensions(self.groundNode2:ComputeSizeForDepth(GROUND_AREA_TEXTURE_SIZE * magnification, GROUND_AREA_TEXTURE_SIZE * magnification, GROUND_DEPTH, CAMERA_START_DEPTH))
    self.smokeTexture1:SetDimensions(self.smokeNode1:ComputeSizeForDepth(SMOKE_1_WIDTH * magnification, SMOKE_1_HEIGHT * magnification, SMOKE_DEPTH, CAMERA_START_DEPTH))
    self.smokeTexture2:SetDimensions(self.smokeNode2:ComputeSizeForDepth(SMOKE_2_WIDTH * magnification, SMOKE_2_HEIGHT * magnification, SMOKE_DEPTH, CAMERA_START_DEPTH))
    
    for _, particleSystem in ipairs(self.particleSystems) do
        particleSystem:UpdateMagnification(magnification)
    end
    for _, cloud in ipairs(self.clouds) do
        cloud:UpdateMagnification(magnification)
    end
    self.magnification = magnification
end
function MorrowindBackground:StartParticleSystems()
    for _, particleSystem in ipairs(self.particleSystems) do
        particleSystem:Start()
    end
end
function MorrowindBackground:StopParticleSystems()
    for _, particleSystem in ipairs(self.particleSystems) do
        particleSystem:Stop()
    end
end
function MorrowindBackground:StartClouds()
    for _, cloud in ipairs(self.clouds) do
        cloud:Play()
    end
    self.cloudsStarted = true
end
function MorrowindBackground:Start()
    self.canvasControl:SetAlpha(0)
    self.showTimeline:PlayFromStart()
    if not self.cloudsStarted then
        self:StartClouds()
    end
end
function MorrowindBackground:Stop()
    self.lastUpdateS = nil
end
--Events
function MorrowindBackground:OnUpdate(timeS)
    if self.lastUpdateS then
        local deltaS = timeS - self.lastUpdateS
        local cameraWanderX, cameraWanderY = self.cameraWander:Update(timeS)
        self.sceneGraph:SetCameraX(cameraWanderX)
        self.sceneGraph:SetCameraY(cameraWanderY)
        self.sceneGraph:SetCameraZ(self.cameraRootZ)
        for _, cloud in ipairs(self.clouds) do
            cloud:OnUpdate(timeS)
        end
        --A faster and a slower change in the alpha combined together
        local lavaAlpha = zo_abs(math.sin(timeS * LAVA_GLOW_SLOW_SPEED_FACTOR)) * LAVA_GLOW_SLOW_AMOUNT
        lavaAlpha = lavaAlpha + zo_abs(math.sin(timeS * LAVA_GLOW_FAST_SPEED_FACTOR)) * LAVA_GLOW_FAST_AMOUNT
        self.groundTexture2:SetAlpha(lavaAlpha)
        --Bottom Right Smoke
        local smoke1X = SMOKE_1_ORIGIN_X + math.cos(timeS * SMOKE_SPEED_FACTOR) * SMOKE_1_DELTA_X
        local smoke1Y = SMOKE_1_ORIGIN_Y + math.sin(timeS * SMOKE_SPEED_FACTOR) * SMOKE_1_DELTA_Y
        self.smokeNode1:SetX(self.smokeNode1:ComputeSizeForDepth(smoke1X * self.magnification, 0, SMOKE_DEPTH, CAMERA_START_DEPTH))
        self.smokeNode1:SetY(self.smokeNode1:ComputeSizeForDepth(smoke1Y * self.magnification, 0, SMOKE_DEPTH, CAMERA_START_DEPTH))
        --Top Left Smoke
        local smoke2X = SMOKE_2_ORIGIN_X + math.cos(timeS * SMOKE_SPEED_FACTOR) * SMOKE_2_DELTA_X
        local smoke2Y = SMOKE_2_ORIGIN_Y + math.sin(timeS * SMOKE_SPEED_FACTOR) * SMOKE_2_DELTA_Y
        self.smokeNode2:SetX(self.smokeNode2:ComputeSizeForDepth(smoke2X * self.magnification, 0, SMOKE_DEPTH, CAMERA_START_DEPTH))
        self.smokeNode2:SetY(self.smokeNode2:ComputeSizeForDepth(smoke2Y * self.magnification, 0, SMOKE_DEPTH, CAMERA_START_DEPTH))
    end
    self.lastUpdateS = timeS    
end
function MorrowindBackground:OnScreenResized()
    self:ResizeSizes()
end
--Global XML Handlers
    if IsGamepadUISupported() then
        PREGAME_ANIMATED_BACKGROUND = MorrowindBackground:New(self)
    end
end