-
Notifications
You must be signed in to change notification settings - Fork 2
/
cftBox2D.monkey
executable file
·1273 lines (1182 loc) · 45.7 KB
/
cftBox2D.monkey
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
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
#rem
Title: fantomEngine
Description: A 2D game framework for the Monkey programming language
Author: Michael Hartlef
Contact: michaelhartlef@gmail.com
Website: http://www.fantomgl.com
License: MIT
#End
'nav:<blockquote><nav><b>fantomEngine documentation</b> | <a href="index.html">Home</a> | <a href="classes.html">Classes</a> | <a href="3rdpartytools.html">3rd party tools</a> | <a href="examples.html">Examples</a> | <a href="changes.html">Changes</a></nav></blockquote>
#Rem
'header:The cftBox2D module hosts an optional Box2D integration class. At the moment, not all functionality of Box2D is integrated but you can create objects, joints, do collision detection and even raycasting.
#End
Import fantomEngine
Import box2d.collision
Import box2d.collision.shapes
Import box2d.dynamics.joints
Import box2d.common.math
Import box2d.common
Import box2d.dynamics.contacts
Import box2d.dynamics.controllers
Import box2d.dynamics.joints
Import box2d.dynamics
Import box2d.flash.flashtypes
'#DOCOFF#'
Class ftContactListener Extends b2ContactListener
Field b2D:ftBox2D
'------------------------------------------
Method New(b:ftBox2D)
Self.b2D = b
End
'------------------------------------------
Method BeginContact:Void (contact:b2Contact)
b2D.OnBeginContact(contact)
End
'------------------------------------------
Method EndContact:Void (contact:b2Contact)
b2D.OnEndContact(contact)
End
'------------------------------------------
Method PostSolve:Void (contact:b2Contact, impulse:b2ContactImpulse)
b2D.OnPostSolve(contact, impulse)
End
'------------------------------------------
Method PreSolve : Void (contact:b2Contact, manifold:b2Manifold)
b2D.OnPreSolve(contact, manifold)
End
End
'#DOCON#
'***************************************
#Rem
'summery:The ftBox2D class integrates some functionality of Box2D into your project. With it you can connect ftObjects with Box2D bodies. For feature requests, please contact Michael about what you need.
#End
Class ftBox2D
'#DOCOFF#'
Field engine:ftEngine
Const frameRate:Int = 30
Const physicsRate:Int = 60
Const physicsFrameMS:Float = 1000.0/physicsRate
Const physicsFramesPerRender:Float = Float(physicsRate)/frameRate
Const btStatic:Int = 0
Const btKinematic:Int = 1
Const btBody:Int = 2 'Dynamic body
Field m_physScale:Float = 30
Field nextFrame:Float = 0.0
Field m_world:b2World
'// Sprite to draw in to
Field m_sprite:FlashSprite
'#DOCON#
'------------------------------------------
'summery:Adds a polygon shape to an existing polygon physics body.
'The base of this method was provided generously by the Monkey user CalebDev
Method AddPolygon:Void(tmpObj:ftObject, vec:Float[] )
Local body:b2Body = b2Body(tmpObj.box2DBody)
If body = Null Then Error("ftBox2D.AddPolygon - body = NULL")
Local shape:b2PolygonShape = New b2PolygonShape()
Local xp:Float
Local yp:Float
Local vecLen:Float = vec.Length()
Local vecLenHalf = vecLen/2
Local v:b2Vec2[vecLen/2]
For Local vl:Float = 1.0 To vecLenHalf
v[vl-1] = New b2Vec2
Next
For Local i:Float = 1.0 To vecLen Step 2
xp = vec[i-1]/m_physScale
yp = vec[i]/m_physScale
v[(i-1)/2].x = xp
v[(i-1)/2].y = yp
Next
shape.SetAsArray(v, vecLenHalf)
body.CreateFixture2(shape)
End
'------------------------------------------
'summery:Applies force to the connected body of a ftObject.
Method ApplyForce:Void(tmpObj:ftObject, forceX:Float, forceY:Float, pointX:Float, pointY:Float)
Local body:b2Body = b2Body(tmpObj.box2DBody)
Local f:b2Vec2 = New b2Vec2
Local p:b2Vec2 = New b2Vec2
If body = Null Then Error("ftBox2D.ApplyForce - body = NULL")
f.x = forceX
f.y = forceY
p.x = pointX/m_physScale
p.y = pointY/m_physScale
body.ApplyForce (f, p)
End
'------------------------------------------
'summery:Applies torque to the connected body of a ftObject.
Method ApplyTorque:Void(tmpObj:ftObject, torque:Float, degree:Bool=True)
Local body:b2Body = b2Body(tmpObj.box2DBody)
'Local i:b2Vec2 = New b2Vec2
'Local p:b2Vec2 = New b2Vec2
If body = Null Then Error("ftBox2D.ApplyImpulse - body = NULL")
If degree = True Then torque = torque * 0.0174533
body.ApplyTorque (torque)
End
'------------------------------------------
'summery:Applies an impulse to the connected body of a ftObject.
Method ApplyImpulse:Void(tmpObj:ftObject, impulseX:Float, impulseY:Float, pointX:Float, pointY:Float)
Local body:b2Body = b2Body(tmpObj.box2DBody)
Local i:b2Vec2 = New b2Vec2
Local p:b2Vec2 = New b2Vec2
If body = Null Then Error("ftBox2D.ApplyImpulse - body = NULL")
i.x = impulseX
i.y = impulseY
p.x = pointX/m_physScale
p.y = pointY/m_physScale
body.ApplyImpulse (i, p)
End
'------------------------------------------
'summery:Connects the body to an ftObject.
Method ConnectBody:Void(tmpObj:ftObject, body:b2Body )
tmpObj.box2DBody = body
body.SetUserData(Object(tmpObj))
End
'------------------------------------------
'summery:Create a box shaped B2Body object.
Method CreateBox:b2Body(width:Float,height:Float, xpos:Float, ypos:float )
Local shape :b2PolygonShape= New b2PolygonShape()
Local bodyDef :b2BodyDef = New b2BodyDef()
Local body :b2Body
bodyDef.position.Set( xpos/m_physScale, ypos/m_physScale)
shape.SetAsBox(width/2/m_physScale, height/2/m_physScale)
body = m_world.CreateBody(bodyDef)
'Local massdata:b2MassData = New b2MassData()
'massdata.center = New b2Vec2(0, 0)
'massdata.mass = 1.0
'massdata.I = 0.0
body.CreateFixture2(shape)
'body.SetMassData(massdata)
Return body
end
'------------------------------------------
'summery:Create a circle shaped B2Body object.
Method CreateCircle:b2Body(radius:Float, xpos:Float, ypos:float )
Local shape :b2CircleShape= New b2CircleShape(radius/m_physScale)
Local bodyDef :b2BodyDef = New b2BodyDef()
Local body :b2Body
bodyDef.position.Set( xpos/m_physScale, ypos/m_physScale)
body = m_world.CreateBody(bodyDef)
'Local massdata:b2MassData = New b2MassData()
'massdata.center = New b2Vec2(0, 0)
'massdata.mass = 1.0
'massdata.I = 0.0
body.CreateFixture2(shape)
'body.SetMassData(massdata)
Return body
end
'------------------------------------------
'summery:Create a distant joint.
Method CreateDistantJoint:b2DistanceJoint(bodyA:b2Body, bodyB:b2Body)
Local dd:b2DistanceJointDef = New b2DistanceJointDef()
dd.Initialize(bodyA, bodyB, bodyA.GetWorldCenter(), bodyB.GetWorldCenter())
Local distanceJoint := b2DistanceJoint(m_world.CreateJoint(dd))
Return distanceJoint
end
'------------------------------------------
'summery:Create a mouse joint.
Method CreateMouseJoint:b2MouseJoint(groundBody:b2Body, targetBody:b2Body, targetX:Float, targetY:Float, maxForce:Float, collideConnect:Bool = True, frequencyHz:Float = 5.0, dampingRatio:Float = 0.7 )
Local md :b2MouseJointDef = New b2MouseJointDef()
md.bodyA = groundBody
md.bodyB = targetBody
md.target.Set(targetX/m_physScale, targetY/m_physScale)
md.collideConnected = collideConnect
md.maxForce = maxForce
md.frequencyHz = frequencyHz
md.dampingRatio = dampingRatio
Local mouseJoint := b2MouseJoint(m_world.CreateJoint(md))
Return mouseJoint
end
'------------------------------------------
'summery:Create a revolute joint.
Method CreateRevoluteJoint:b2RevoluteJoint(bodyA:b2Body, bodyB:b2Body, startX:Float, startY:Float, lowerAngle:Float, upperAngle:Float, degree:Bool = True)
Local rd:b2RevoluteJointDef = New b2RevoluteJointDef()
Local lA:Float = lowerAngle
Local uA:Float = upperAngle
If degree = True Then
lA = lA * 0.0174533
uA = uA * 0.0174533
endif
rd.enableLimit = True
rd.lowerAngle = lA
rd.upperAngle = uA
rd.Initialize(bodyA, bodyB, New b2Vec2((startX/m_physScale), (startY / m_physScale)))
Local revoluteJoint := b2RevoluteJoint(m_world.CreateJoint(rd))
Return revoluteJoint
end
'------------------------------------------
'summery:Create a rope joint.
Method CreateRopeJoint:b2RopeJoint(bodyA:b2Body, bodyB:b2Body, maxDistance:Float, collideConnect:Bool = True)
Local rd:b2RopeJointDef = New b2RopeJointDef()
'rd.Initialize(bodyA, bodyB, New b2Vec2, New b2Vec2, maxDistance)
rd.bodyA = bodyA
rd.bodyB = bodyA
rd.localAnchorA = New b2Vec2
rd.localAnchorB = New b2Vec2
rd.maxLength = maxDistance/m_physScale
rd.collideConnected = collideConnect
Local ropeJoint := b2RopeJoint(m_world.CreateJoint(rd))
Return ropeJoint
end
'------------------------------------------
'summery:Create a B2Body object based on a ftObject. It will also connect it to the ftObject.
Method CreateObject:b2Body(tmpObj:ftObject, btype:Int = b2Body.b2_Body )
Local shape:b2PolygonShape
Local shapeC:b2CircleShape
Local bodyDef:b2BodyDef = New b2BodyDef()
Local fixtureDef:b2FixtureDef = New b2FixtureDef()
Local body:b2Body
bodyDef.type = btype
Select tmpObj.collType
Case ftEngine.ctCircle
shapeC = New b2CircleShape(tmpObj.GetRadius()/m_physScale)
'shapeC = New b2CircleShape(tmpObj.GetRadius())
fixtureDef.shape = shapeC
Default
shape = New b2PolygonShape()
shape.SetAsBox(tmpObj.GetWidth()/2/m_physScale,tmpObj.GetHeight()/2/m_physScale)
fixtureDef.shape = shape
End
fixtureDef.density = 0.7
fixtureDef.friction = 0.1
fixtureDef.restitution = 0.9
bodyDef.angle = (tmpObj.GetAngle())* 0.0174533
'bodyDef.angle = (tmpObj.GetAngle()+90)* 0.0174533
'Print (tmpObj.GetWidth()+":"+tmpObj.GetHeight()+":"+tmpObj.GetAngle()+":"+(bodyDef.angle/0.0174533))
bodyDef.position.Set( tmpObj.GetPosX()/m_physScale, tmpObj.GetPosY()/m_physScale)
body = m_world.CreateBody(bodyDef)
'Local massdata:b2MassData = New b2MassData()
'massdata.center = New b2Vec2(0, 0)
'massdata.mass = 1.0
'massdata.I = 0.0
body.CreateFixture(fixtureDef)
'body.SetMassData(massdata)
body.SetUserData(Object(tmpObj))
tmpObj.box2DBody = body
Return body
end
'------------------------------------------
'summery:Create a polygon shaped B2Body object.
Method CreatePolygon:b2Body(vec:Float[], xpos:Float, ypos:Float, btype:Int = b2Body.b2_Body )
Local shape :b2PolygonShape= New b2PolygonShape()
Local bodyDef :b2BodyDef = New b2BodyDef()
Local body:b2Body
Local xp:Float
Local yp:float
bodyDef.type = btype
Local vecLen:Float = vec.Length()
Local vecLenHalf:Float = vecLen/2
'Local a:Int[][] = New Int[columns][]
Local v:b2Vec2[vecLenHalf]
For Local vl:Int = 1 To vecLenHalf
v[vl-1] = New b2Vec2
Next
For Local i:Int = 1 To vecLen Step 2
xp = vec[i-1]/m_physScale
yp = vec[i]/m_physScale
v[(i-1)/2].x = xp
v[(i-1)/2].y = yp
Next
bodyDef.position.Set( xpos/m_physScale, ypos/m_physScale)
shape.SetAsArray(v, vecLenHalf)
body = m_world.CreateBody(bodyDef)
body.CreateFixture2(shape)
Return body
end
'------------------------------------------
'summery:Create a polygon shaped B2Body object from a PhysicsEditor compatible json file.
Method CreatePolygon:b2Body(filename:String, subBodyName:String, xpos:Float, ypos:Float)
Local bodyDef :b2BodyDef = New b2BodyDef()
Local body:b2Body = null
Local xp:Float
Local yp:Float
Local fileData:String = LoadString(filename)
Local jsonData:JSONDataItem = JSONData.ReadJSON(fileData)
Local jsonObject:JSONObject = JSONObject(jsonData)
Local bodyObjects:JSONArray = JSONArray(jsonObject.GetItem("bodies"))
For Local bodySet:JSONDataItem = Eachin bodyObjects
Local dataBodySet:JSONObject = JSONObject(bodySet)
Local bodyName:String = dataBodySet.GetItem("name")
If bodyName.ToLower() = subBodyName.ToLower() Then
If dataBodySet.GetItem("isDynamic") = "True" Then
bodyDef.type = b2Body.b2_Body
'Else
' bodyDef.type = b2Body.b2_staticBody
Endif
If dataBodySet.GetItem("isBullet") = "True" Then
bodyDef.bullet = True
Endif
If dataBodySet.GetItem("fixedRotation") = "True" Then
bodyDef.fixedRotation = True
Endif
Local adamp:Float = dataBodySet.GetItem("angularDamping")
Local ldamp:Float = dataBodySet.GetItem("linearDamping")
bodyDef.angularDamping = adamp
bodyDef.linearDamping = ldamp
bodyDef.position.Set( xpos/m_physScale, ypos/m_physScale)
'Read fixtures
Local fixturesObjects:JSONArray = JSONArray(dataBodySet.GetItem("fixtures"))
body = m_world.CreateBody(bodyDef)
For Local fixtureSet:JSONDataItem = Eachin fixturesObjects
Local dataFixtureSet:JSONObject = JSONObject(fixtureSet)
Local dens:Float = dataFixtureSet.GetItem("density")
Local fric:Float = dataFixtureSet.GetItem("friction")
Local res:Float = dataFixtureSet.GetItem("restitution")
Local shapeObjects:JSONArray = JSONArray(dataFixtureSet.GetItem("shape"))
'How many vertices entries?
Local soLength:Int=0
For Local shapeSet:JSONDataItem = Eachin shapeObjects
soLength=soLength+1
Next
Local vec:Float[] = New Float[soLength]
Local vecLen:Float = vec.Length()
Local vecLenHalf:Float = vecLen/2
Local i:Int= 0
For Local shapeSet:JSONDataItem = Eachin shapeObjects
Local shapeValue:JSONInteger = JSONInteger(shapeSet)
Local vi:Int = shapeValue
vec[i] = vi
i = i+1
Next
'Create b2Vec2 array to store the vectices
Local v:b2Vec2[soLength/2]
For Local vl:Int = 1 To vecLenHalf
v[vl-1] = New b2Vec2
Next
For Local i:Int = 1 To vecLen Step 2
xp = vec[i-1]/m_physScale
yp = vec[i]/m_physScale
v[(i-1)/2].x = xp
v[(i-1)/2].y = yp
Next
Local shape :b2PolygonShape= New b2PolygonShape()
shape.SetAsArray(v, vecLenHalf)
Local def :b2FixtureDef = New b2FixtureDef()
def.shape = shape
def.density = dens
def.friction = fric
def.restitution = res
def.filter.groupIndex= JSONInteger(dataFixtureSet.GetItem("filterGroupIndex"))
Local filter:JSONObject = JSONObject(dataFixtureSet.GetItem("filter"))
def.filter.categoryBits = JSONInteger(filter.GetItem("categoryBits"))
def.filter.maskBits = JSONInteger(filter.GetItem("maskBits"))
If dataFixtureSet.GetItem("isSensor") = "True" Then
def.isSensor = True
Endif
'body.CreateFixture2(shape)
body.CreateFixture(def)
Next
Endif
Next
If body = Null Then Error("ftBox2D.CreatePolygon - body = NULL")
Return body
end
'------------------------------------------
'summery:Create a weld joint.
Method CreateWeldJoint:b2WeldJoint(bodyA:b2Body, bodyB:b2Body)
Local wd:b2WeldJointDef = New b2WeldJointDef()
wd.Initialize(bodyA, bodyB, bodyA.GetWorldCenter())
Local weldJoint := b2WeldJoint(m_world.CreateJoint(wd))
Return weldJoint
end
'------------------------------------------
'summery:Create a B2World object.
Method CreateWorld:b2World()
Local worldAABB :b2AABB = New b2AABB()
worldAABB.lowerBound.Set(-1000.0, -1000.0)
worldAABB.upperBound.Set(1000.0, 1000.0)
'// Define the gravity vector
Local gravity :b2Vec2 = New b2Vec2(0.0, 0.0)
'// Allow bodies to sleep
Local doSleep :Bool = True
'// Construct a world object
m_world = New b2World(gravity, doSleep)
m_world.SetWarmStarting(True)
m_world.SetContactListener(New ftContactListener(Self))
Return m_world
End
'------------------------------------------
'summery:Disconnects and destroys the connected body of an ftObject.
Method DestroyBody:Void(tmpObj:ftObject )
Local body:b2Body = b2Body(tmpObj.box2DBody)
If body = Null Then Error("ftBox2D.DestroyBody - body = NULL")
tmpObj.box2DBody = Null
body.SetUserData(Null)
m_world.DestroyBody(body)
End
'------------------------------------------
'summery:Destroys a joint.
Method DestroyJoint:Void(joint:b2Joint )
If joint = Null Then Error("ftBox2D.DestroyJoint - joint = NULL")
m_world.DestroyJoint(joint)
End
'------------------------------------------
'summery:Returns the angle of the connected body.
Method GetAngle:Float(tmpObj:ftObject, degree:Bool = True)
Local body:b2Body = b2Body(tmpObj.box2DBody)
Local ang:Float
If body = Null Then Error("ftBox2D.GetAngle - body = NULL")
ang = body.GetAngle()
If degree = True Then ang = ang / 0.0174533
Return ang
End
'------------------------------------------
'summery:Returns the angular damping of a connected body.
Method GetAngularDamping:Float(tmpObj:ftObject)
Local body:b2Body = b2Body(tmpObj.box2DBody)
Local damp:Float
If body = Null Then Error("ftBox2D.GetAngularDamping - body = NULL")
damp = body.GetAngularDamping()
Return damp
End
'------------------------------------------
'summery:Returns the angular velocity of a connected body.
Method GetAngularVelocity:Float(tmpObj:ftObject, degree:Bool = True)
Local body:b2Body = b2Body(tmpObj.box2DBody)
Local vel:Float
If body = Null Then Error("ftBox2D.GetAngularVelocity - body = NULL")
vel = body.GetAngularVelocity()
If degree = True Then vel = vel / 0.0174533
Return vel
End
'------------------------------------------
'summery:Returns the connected body of a ftObject.
Method GetBody:b2Body(tmpObj:ftObject )
Return b2Body(tmpObj.box2DBody)
End
'------------------------------------------
'summery:Returns the density of the fixture with the given index.
Method GetDensity:Float(tmpObj:ftObject, fIndex:Int = 1)
Local body:b2Body = b2Body(tmpObj.box2DBody)
If body = Null Then Error("ftBox2D.GetDensity - body = NULL")
Local cc:Int = Self.GetFixtureCount(tmpObj)
If fIndex < 1 Or fIndex > cc Then Error ("~n~nError in file fantomEngine.cftBox2D, Method ftBox2D.GetDensity():~n~nUsed index ("+fIndex+") is out of bounds (1-"+cc+")")
Local nf:Int=0
Local tmpFix:b2Fixture = body.GetFixtureList()
If tmpFix <> Null Then
nf = nf + 1
If nf = fIndex Then Return tmpFix.GetDensity()
While tmpFix.GetNext() <> Null
nf = nf + 1
If nf = fIndex Then Return tmpFix.GetDensity()
tmpFix = tmpFix.GetNext()
Wend
Endif
Return 0.0
End
'------------------------------------------
'summery:Returns the filter category bits of the fixture with the given index.
Method GetFilterCategoryBits:Int(tmpObj:ftObject, fIndex:Int = 1)
Local body:b2Body = b2Body(tmpObj.box2DBody)
Local filterData:b2FilterData
If body = Null Then Error("ftBox2D.GetFilterCategoryBits - body = NULL")
Local cc:Int = Self.GetFixtureCount(tmpObj)
If fIndex < 1 Or fIndex > cc Then Error ("~n~nError in file fantomEngine.cftBox2D, Method ftBox2D.GetFilterCategoryBits():~n~nUsed index ("+fIndex+") is out of bounds (1-"+cc+")")
Local nf:Int=0
Local tmpFix:b2Fixture = body.GetFixtureList()
If tmpFix <> Null Then
nf = nf + 1
If nf = fIndex Then
filterData = tmpFix.GetFilterData()
Return filterData.categoryBits
Endif
While tmpFix.GetNext() <> Null
nf = nf + 1
If nf = fIndex Then
filterData = tmpFix.GetFilterData()
Return filterData.categoryBits
Endif
tmpFix = tmpFix.GetNext()
Wend
Endif
Return 0.0
End
'------------------------------------------
'summery:Returns the filter mask bits of the fixture with the given index.
Method GetFilterMaskBits:Int(tmpObj:ftObject, fIndex:Int = 1)
Local body:b2Body = b2Body(tmpObj.box2DBody)
Local filterData:b2FilterData
If body = Null Then Error("ftBox2D.GetFilterMaskBits - body = NULL")
Local cc:Int = Self.GetFixtureCount(tmpObj)
If fIndex < 1 Or fIndex > cc Then Error ("~n~nError in file fantomEngine.cftBox2D, Method ftBox2D.GetFilterMaskBits():~n~nUsed index ("+fIndex+") is out of bounds (1-"+cc+")")
Local nf:Int=0
Local tmpFix:b2Fixture = body.GetFixtureList()
If tmpFix <> Null Then
nf = nf + 1
If nf = fIndex Then
filterData = tmpFix.GetFilterData()
Return filterData.maskBits
Endif
While tmpFix.GetNext() <> Null
nf = nf + 1
If nf = fIndex Then
filterData = tmpFix.GetFilterData()
Return filterData.maskBits
Endif
tmpFix = tmpFix.GetNext()
Wend
Endif
Return 0
End
'------------------------------------------
'summery:Returns the filter mask bits of the fixture with the given index.
Method GetFilterGroupIndex:Int(tmpObj:ftObject, fIndex:Int = 1)
Local body:b2Body = b2Body(tmpObj.box2DBody)
Local filterData:b2FilterData
If body = Null Then Error("ftBox2D.GetFilterGroupIndex - body = NULL")
Local cc:Int = Self.GetFixtureCount(tmpObj)
If fIndex < 1 Or fIndex > cc Then Error ("~n~nError in file fantomEngine.cftBox2D, Method ftBox2D.GetFilterGroupIndex():~n~nUsed index ("+fIndex+") is out of bounds (1-"+cc+")")
Local nf:Int=0
Local tmpFix:b2Fixture = body.GetFixtureList()
If tmpFix <> Null Then
nf = nf + 1
If nf = fIndex Then
filterData = tmpFix.GetFilterData()
Return filterData.groupIndex
Endif
While tmpFix.GetNext() <> Null
nf = nf + 1
If nf = fIndex Then
filterData = tmpFix.GetFilterData()
Return filterData.groupIndex
Endif
tmpFix = tmpFix.GetNext()
Wend
Endif
Return 0
End
'------------------------------------------
'summery:Returns the fixture of a objects connected body with the given index.
Method GetFixture:b2Fixture(tmpObj:ftObject, fIndex:Int = 1)
Local body:b2Body = b2Body(tmpObj.box2DBody)
If body = Null Then Error("ftBox2D.GetFixture - body = NULL")
Local cc:Int = Self.GetFixtureCount(tmpObj)
If fIndex < 1 Or fIndex > cc Then Error ("~n~nError in file fantomEngine.cftBox2D, Method ftBox2D.GetFixture():~n~nUsed index ("+fIndex+") is out of bounds (1-"+cc+")")
Local nf:Int=0
Local tmpFix:b2Fixture = body.GetFixtureList()
If tmpFix <> Null Then
nf = nf + 1
If nf = fIndex Then Return tmpFix
While tmpFix.GetNext() <> Null
nf = nf + 1
If nf = fIndex Then Return tmpFix
tmpFix = tmpFix.GetNext()
Wend
Endif
Return Null
End
'------------------------------------------
'summery:Returns the number of fixtures of a connected body.
Method GetFixtureCount:Int(tmpObj:ftObject)
Local body:b2Body = b2Body(tmpObj.box2DBody)
If body = Null Then Error("ftBox2D.GetFixtureCount - body = NULL")
Local nf:Int=0
Local tmpFix:b2Fixture = body.GetFixtureList()
If tmpFix <> Null Then
nf = nf + 1
While tmpFix.GetNext() <> Null
nf = nf + 1
tmpFix = tmpFix.GetNext()
Wend
Endif
Return nf
End
'------------------------------------------
'summery:Returns the postion of the last raycast hit.
Method GetLastRayCastHit:Float[]()
Local pos:Float[2]
pos[0] = 0.0
pos[1] = 0.0
Return pos
End
'------------------------------------------
'summery:Returns the friction of the fixture with the given index.
Method GetFriction:Float(tmpObj:ftObject, fIndex:Int = 1)
Local body:b2Body = b2Body(tmpObj.box2DBody)
If body = Null Then Error("ftBox2D.GetFriction - body = NULL")
Local cc:Int = Self.GetFixtureCount(tmpObj)
If fIndex < 1 Or fIndex > cc Then Error ("~n~nError in file fantomEngine.cftBox2D, Method ftBox2D.GetFriction():~n~nUsed index ("+fIndex+") is out of bounds (1-"+cc+")")
Local nf:Int=0
Local tmpFix:b2Fixture = body.GetFixtureList()
If tmpFix <> Null Then
nf = nf + 1
If nf = fIndex Then Return tmpFix.GetFriction()
While tmpFix.GetNext() <> Null
nf = nf + 1
If nf = fIndex Then Return tmpFix.GetFriction()
tmpFix = tmpFix.GetNext()
Wend
Endif
Return 0.0
End
'------------------------------------------
'summery:Returns the linear damping of a connected body.
Method GetLinearDamping:Float(tmpObj:ftObject)
Local body:b2Body = b2Body(tmpObj.box2DBody)
If body = Null Then Error("ftBox2D.GetLinearDamping - body = NULL")
Return body.GetLinearDamping()
End
'------------------------------------------
'summery:Returns the linear velocity of a connected body.
Method GetLinearVelocity:float[](tmpObj:ftObject)
Local body:b2Body = b2Body(tmpObj.box2DBody)
Local v:Float[2]
If body = Null Then Error("ftBox2D.GetLinearVelocity - body = NULL")
Local vel:b2Vec2 = body.GetLinearVelocity()
v[0] = vel.x
v[1] = vel.y
Return v
End
'------------------------------------------
#Rem
'summery:Returns the mass data of a connected body.
'It will return an array with the following float values
[list][*]index #0 -> mass
[*]index #1 -> centerX
[*]index #2 -> centerY
[*]index #3 -> I
[/list]
#End
Method GetMassData:Float[](tmpObj:ftObject)
Local body:b2Body = b2Body(tmpObj.box2DBody)
If body = Null Then Error("ftBox2D.GetMassData - body = NULL")
Local massdata:b2MassData = New b2MassData
body.GetMassData(massdata)
Local ret:Float[4]
ret[0] = massdata.mass
ret[1] = massdata.center.x
ret[2] = massdata.center.y
ret[3] = massdata.I
Return ret
End
'------------------------------------------
'summery:Returns the postion of a connected body.
Method GetPosition:Float[](tmpObj:ftObject)
Local body:b2Body = b2Body(tmpObj.box2DBody)
Local p:b2Vec2 = New b2Vec2
Local pos:Float[2]
If body = Null Then Error("ftBox2D.GetPosition - body = NULL")
p = body.GetPosition()
pos[0] = p.x*m_physScale
pos[1] = p.y*m_physScale
Return pos
End
'------------------------------------------
'summery:Returns the restitution of the fixture with the given index.
Method GetRestitution:Float(tmpObj:ftObject, fIndex:Int = 1)
Local body:b2Body = b2Body(tmpObj.box2DBody)
If body = Null Then Error("ftBox2D.GetRestitution - body = NULL")
Local cc:Int = Self.GetFixtureCount(tmpObj)
If fIndex < 1 Or fIndex > cc Then Error ("~n~nError in file fantomEngine.cftBox2D, Method ftBox2D.GetRestitution():~n~nUsed index ("+fIndex+") is out of bounds (1-"+cc+")")
Local nf:Int=0
Local tmpFix:b2Fixture = body.GetFixtureList()
If tmpFix <> Null Then
nf = nf + 1
If nf = fIndex Then Return tmpFix.GetRestitution()
While tmpFix.GetNext() <> Null
nf = nf + 1
If nf = fIndex Then Return tmpFix.GetRestitution()
tmpFix = tmpFix.GetNext()
Wend
Endif
Return 0.0
End
'------------------------------------------
'summery:Returns the sensor flag of the fixture with the given index.
Method GetSensor:bool(tmpObj:ftObject, fIndex:Int = 1)
Local body:b2Body = b2Body(tmpObj.box2DBody)
If body = Null Then Error("ftBox2D.GetSensor - body = NULL")
Local cc:Int = Self.GetFixtureCount(tmpObj)
If fIndex < 1 Or fIndex > cc Then Error ("~n~nError in file fantomEngine.cftBox2D, Method ftBox2D.GetSensor():~n~nUsed index ("+fIndex+") is out of bounds (1-"+cc+")")
Local nf:Int=0
Local tmpFix:b2Fixture = body.GetFixtureList()
If tmpFix <> Null Then
nf = nf + 1
If nf = fIndex Then Return tmpFix.IsSensor()
While tmpFix.GetNext() <> Null
nf = nf + 1
If nf = fIndex Then Return tmpFix.IsSensor()
tmpFix = tmpFix.GetNext()
Wend
Endif
Return False
End
'------------------------------------------
'summery:Returns the type of a connected body.
Method GetType:Int(tmpObj:ftObject)
Local body:b2Body = b2Body(tmpObj.box2DBody)
If body = Null Then Error("ftBox2D.GetType - body = NULL")
Return body.GetType()
End
'------------------------------------------
#Rem
'summery:This method initialized the debug drawing of box2D.
'To actually draw it, use the RenderDebugDraw method.
#End
Method InitDebugDraw:Void()
Local dbgDraw :b2DebugDraw = New b2DebugDraw()
dbgDraw.SetSprite(m_sprite)
dbgDraw.SetDrawScale(m_physScale*Min(engine.GetScaleX(),engine.GetScaleY()))
dbgDraw.SetFillAlpha(0.3)
dbgDraw.SetLineThickness(1.0)
dbgDraw.SetFlags(b2DebugDraw.e_shapeBit | b2DebugDraw.e_jointBit)'| b2DebugDraw.e_pairBit)
m_world.SetDebugDraw(dbgDraw)
End
'------------------------------------------
'summery:This method creates a new box2D instance and connects it with the given ftEngine
Method New(eng:ftEngine)
Self.engine = eng
End
'------------------------------------------
'summery:This callback method is called when a collision contact has begun.
Method OnBeginContact:Void (contact:b2Contact)
End
'------------------------------------------
'summery:This callback method is called when a collision contact has ended.
Method OnEndContact:Void (contact:b2Contact)
End
'------------------------------------------
'summery:This callback method is called after the collision has been solved.
Method OnPostSolve:Void (contact:b2Contact, impulse:b2ContactImpulse)
End
'------------------------------------------
'summery:This callback method is called before the collision has been solved.
Method OnPreSolve:Void (contact:b2Contact, manifold:b2Manifold)
'Local fixtureA:b2Fixture = contact.GetFixtureA()
'Local fixtureB:b2Fixture = contact.GetFixtureB()
'Local bodyA:b2Body = contact.GetFixtureA().GetBody()
'Local bodyB:b2Body = contact.GetFixtureB().GetBody()
End
'------------------------------------------
'summery:This callback method is called when a raycast was successful.
Method OnRayCast:Void (rayFraction:Float, rayVec:b2Vec2, hitNormal:b2Vec2, hitPoint:b2Vec2, nextPoint:b2Vec2, fixture:b2Fixture, obj:ftObject)
End
'------------------------------------------
#Rem
'summery:Cast a ray and returns TRUE if a shape was hit.
'If a body was hit, the OnRayCast method will be called.
#End
Method RayCast:Bool(x1:Float, y1: Float, x2:Float, y2: Float)
Local fixture:b2Fixture = Null
Local body:b2Body = Null
Local obj:ftObject = Null
Local ud:Object = Null
Local p1:b2Vec2 = New b2Vec2()
Local p2:b2Vec2 = New b2Vec2()
Local rayVec:b2Vec2 = New b2Vec2()
Local hitPoint:b2Vec2 = New b2Vec2()
Local remainingRay:b2Vec2 = New b2Vec2()
Local projectedOntoNormal:b2Vec2 = New b2Vec2()
Local nextPoint:b2Vec2 = New b2Vec2()
Local xdiff:Float
Local ydiff:Float
Local dist:Float
Local ang:Float
Local dotfac:Float
p1.x = x1 / m_physScale
p1.y = y1 / m_physScale
p2.x = x2 / m_physScale
p2.y = y2 / m_physScale
fixture = m_world.RayCastOne(p1, p2)
If (fixture<>Null)
Local input :b2RayCastInput = New b2RayCastInput(p1, p2)
Local output :b2RayCastOutput = New b2RayCastOutput()
fixture.RayCast(output, input)
rayVec.x = x2
rayVec.y = y2
xdiff = x2 - x1
ydiff = y2 - y1
ang = ATan2( ydiff, xdiff )+90.0
If ang < 0 Then
ang = 360.0 + ang
Endif
dist = Sqrt(xdiff * xdiff + ydiff * ydiff) * output.fraction
hitPoint.x = x1 + Sin(ang) * dist
hitPoint.y = y1 - Cos(ang) * dist
remainingRay.x = rayVec.x
remainingRay.y = rayVec.y
remainingRay.x -= hitPoint.x
remainingRay.y -= hitPoint.y
projectedOntoNormal.x = output.normal.x
projectedOntoNormal.y = output.normal.y
dotfac = remainingRay.x * output.normal.x + remainingRay.y * output.normal.y
projectedOntoNormal.x *= dotfac
projectedOntoNormal.y *= dotfac
nextPoint.x = rayVec.x
nextPoint.y = rayVec.y
projectedOntoNormal.x *= 2.0
projectedOntoNormal.y *= 2.0
nextPoint.x -= projectedOntoNormal.x
nextPoint.y -= projectedOntoNormal.y
body = fixture.GetBody()
ud = body.GetUserData()
If ud <> Null Then obj = ftObject(ud)
Self.OnRayCast(output.fraction, rayVec, output.normal, hitPoint, nextPoint, fixture, obj)
Return True
End
Return False
End
'------------------------------------------
'summery:Renders the debug information of the box2D world.
Method RenderDebugDraw:Void()
m_world.DrawDebugData()
End
'------------------------------------------
'summery:Resets the mass data of a connected body.
Method ResetMassData:Void(tmpObj:ftObject)
Local body:b2Body = b2Body(tmpObj.box2DBody)
If body = Null Then Error("ftBox2D.ResetMassData - body = NULL")
body.ResetMassData()
End
'------------------------------------------
'summery:Set the active flag of a connected body.
Method SetActive:Void(tmpObj:ftObject, flag:bool )
Local body:b2Body = b2Body(tmpObj.box2DBody)
If body = Null Then Error("ftBox2D.SetActive - body = NULL")
body.SetActive(flag)
End
'------------------------------------------
'summery:Set the angle of a connected body.
Method SetAngle:Void(tmpObj:ftObject, bodyAngle:Float, degree:Bool=True)
Local body:b2Body = b2Body(tmpObj.box2DBody)
If body = Null Then Error("ftBox2D.SetAngle - body = NULL")
If degree = True Then bodyAngle = bodyAngle * 0.0174533
body.SetAngle (bodyAngle)
End
'------------------------------------------
'summery:Sets the angular damping of a connected body.
Method SetAngularDamping:Void(tmpObj:ftObject, damping:Float)
Local body:b2Body = b2Body(tmpObj.box2DBody)
If body = Null Then Error("ftBox2D.SetAngularDamping - body = NULL")
body.SetAngularDamping (damping)
End
'------------------------------------------
'summery:Set the angular velocity of a connected body.
Method SetAngularVelocity:Void(tmpObj:ftObject, velocity:Float, degree:Bool=True)
Local body:b2Body = b2Body(tmpObj.box2DBody)
If body = Null Then Error("ftBox2D.SetAngularVelocity - body = NULL")
If degree = True Then velocity = velocity * 0.0174533
body.SetAngularVelocity (velocity)
End
'------------------------------------------
'summery:Set the awake flag of a connected body.
Method SetAwake:Void(tmpObj:ftObject, flag:bool )
Local body:b2Body = b2Body(tmpObj.box2DBody)
If body = Null Then Error("ftBox2D.SetAwake - body = NULL")
body.SetAwake(flag)
End
'------------------------------------------
'summery:Sets the bullet flag of a connected body.
Method SetBullet:Void(tmpObj:ftObject, flag:bool )
Local body:b2Body = b2Body(tmpObj.box2DBody)
If body = Null Then Error("ftBox2D.SetBullet - body = NULL")
body.SetBullet(flag)
End
'------------------------------------------
'summery:Sets the density of the fixture with the given index.
Method SetDensity:Void(tmpObj:ftObject, density:Float, fIndex:Int = 1)
Local body:b2Body = b2Body(tmpObj.box2DBody)
If body = Null Then Error("ftBox2D.SetDensity - body = NULL")
Local cc:Int = Self.GetFixtureCount(tmpObj)
If fIndex < 1 Or fIndex > cc Then Error ("~n~nError in file fantomEngine.cftBox2D, Method ftBox2D.SetDensity():~n~nUsed index ("+fIndex+") is out of bounds (1-"+cc+")")
Local nf:Int=0
Local tmpFix:b2Fixture = body.GetFixtureList()
If tmpFix <> Null Then
nf = nf + 1
If nf = fIndex Then
tmpFix.SetDensity(density)
Return
Endif
While tmpFix.GetNext() <> Null
nf = nf + 1
If nf = fIndex Then
tmpFix.SetDensity(density)
Exit
Endif
tmpFix = tmpFix.GetNext()
Wend
Endif
End
'------------------------------------------
'summery:This method connects it with the given ftEngine
Method SetEngine(eng:ftEngine)
Self.engine = eng
End
'------------------------------------------
'summery:Sets the filter category bits of the fixture with the given index.
Method SetFilterCategoryBits:Void(tmpObj:ftObject, categorybits:Int, fIndex:Int = 1)
Local body:b2Body = b2Body(tmpObj.box2DBody)
Local filterData:b2FilterData
If body = Null Then Error("ftBox2D.SetFilterCategoryBits - body = NULL")
Local cc:Int = Self.GetFixtureCount(tmpObj)
If fIndex < 1 Or fIndex > cc Then Error ("~n~nError in file fantomEngine.cftBox2D, Method ftBox2D.SetFilterCategoryBits():~n~nUsed index ("+fIndex+") is out of bounds (1-"+cc+")")
Local nf:Int=0
Local tmpFix:b2Fixture = body.GetFixtureList()
If tmpFix <> Null Then
nf = nf + 1
If nf = fIndex Then
filterData = tmpFix.GetFilterData()
filterData.categoryBits = categorybits
Return
Endif
While tmpFix.GetNext() <> Null