1 00:00:06,330 --> 00:00:10,780 All right now we're going to take a look at a little simulation that we're going to do with the rigid 2 00:00:10,780 --> 00:00:11,930 body physics. 3 00:00:12,040 --> 00:00:17,650 So we're going to have a wall of cubes with a wrecking ball crashing through it. 4 00:00:17,920 --> 00:00:22,560 And then we're going to have Miley Cyrus on top of the wrecking ball. 5 00:00:22,990 --> 00:00:24,560 I'm completely kidding. 6 00:00:24,850 --> 00:00:32,820 So let's go ahead and do that minus the Miley Cyrus part and let's go back to our scene right here. 7 00:00:33,100 --> 00:00:36,460 Let's delete the cube and the sphere hit delete. 8 00:00:36,700 --> 00:00:40,250 And let's keep our floor. 9 00:00:40,310 --> 00:00:42,170 Let's go ahead and place our cursor here. 10 00:00:42,170 --> 00:00:48,850 Shift day and mash Taurus hitting GNC to bring it up above the plane. 11 00:00:49,100 --> 00:00:53,720 Now hitting s and y to scale along the y axis. 12 00:00:53,810 --> 00:00:59,690 I'm also going to scale it down all together with esky and then rotate it along the x axis by hitting 13 00:00:59,750 --> 00:01:04,970 R X and that 90 to rotate it 90 degrees. 14 00:01:04,970 --> 00:01:05,550 Awesome. 15 00:01:05,570 --> 00:01:07,690 Now bringing it up above the floor. 16 00:01:07,940 --> 00:01:13,440 I'm going to hit the End key and go over here because we can see that now the scaling has changed. 17 00:01:13,490 --> 00:01:19,730 I'm just going to take control and apply the scaling so that setback to 1 because that can cause some 18 00:01:19,730 --> 00:01:28,170 weird things and our simulation now going ahead and hitting shift d to copy it. 19 00:01:28,210 --> 00:01:30,480 Yes I'm giving you permission to do that. 20 00:01:30,700 --> 00:01:33,900 Go right ahead and then hit Zied to bring it up. 21 00:01:34,240 --> 00:01:39,070 Hit our rotated along the Z-axis 90 degrees. 22 00:01:39,070 --> 00:01:45,670 Now we want to make sure that it's not intersecting with our other object because if it is when we play 23 00:01:45,670 --> 00:01:51,550 the animation it's going to create some really weird results over here and where it doesn't know how 24 00:01:51,550 --> 00:01:54,490 to correspond with the rigid body physics. 25 00:01:54,490 --> 00:02:00,650 And it will just either go crazy and shoot across your scene or not give you the results that you want. 26 00:02:00,880 --> 00:02:07,720 Now hitting shift right mouse by an Slyke both of these Let's head shifty Z and bring it up and make 27 00:02:07,720 --> 00:02:15,720 sure that these aren't intersecting either hitting shift or which will duplicate our last action or 28 00:02:15,730 --> 00:02:17,120 last thing that we did. 29 00:02:18,000 --> 00:02:20,470 Let's just copy it all the way up to there. 30 00:02:20,700 --> 00:02:23,170 And that looks good. 31 00:02:23,200 --> 00:02:23,490 All right. 32 00:02:23,490 --> 00:02:26,910 Now selecting a ring on your chain. 33 00:02:26,970 --> 00:02:34,340 Let's go ahead and add rigid body physics to it and change it from convex hall to mash. 34 00:02:34,530 --> 00:02:39,900 Now selecting all these other rings with be left click and drag over them. 35 00:02:40,260 --> 00:02:43,440 Let's select our last ring by shift. 36 00:02:43,470 --> 00:02:47,250 Right clicking on it and then going over here to our panel. 37 00:02:47,250 --> 00:02:54,540 And if it's not open just press the tiki go to physics and let's click copy from active to copy all 38 00:02:54,540 --> 00:02:57,980 of these options onto this one right here. 39 00:02:57,990 --> 00:03:01,670 Now if we hit all day you can see what we got. 40 00:03:01,740 --> 00:03:02,700 Pretty cool. 41 00:03:03,940 --> 00:03:07,190 Now let's go ahead and select this last ring right here. 42 00:03:07,390 --> 00:03:14,460 And actually de-select dynamic so that when we hit all day the rest of these rings right here we'll 43 00:03:14,470 --> 00:03:19,600 hang on this one and this one won't have any animation at all. 44 00:03:19,600 --> 00:03:19,960 All right. 45 00:03:19,990 --> 00:03:21,550 Awesome. 46 00:03:21,550 --> 00:03:29,620 Now what we want to do is basically add in our Wrecking Ball selecting all these are going to bring 47 00:03:29,620 --> 00:03:39,720 them up and now selecting the last ring hitting tab to go into Edit Mode shift s cursor to selected 48 00:03:39,780 --> 00:03:46,090 to put our cursor in the middle here then shift a let's add a U.V. sphere in here. 49 00:03:46,170 --> 00:03:52,370 Bring it down and scale it up to however big you want your wrecking ball to be. 50 00:03:52,410 --> 00:03:55,310 So about this size right here. 51 00:03:55,680 --> 00:03:57,760 All right awesome. 52 00:03:57,800 --> 00:04:05,990 I'm actually going to scale it up a little bit more want to write here too about the size right here. 53 00:04:05,990 --> 00:04:06,650 All right cool. 54 00:04:06,650 --> 00:04:09,280 Now hitting tab to go back into object mode. 55 00:04:09,560 --> 00:04:14,760 You can see if we go to front view one of the numpad and hit Alt A to play. 56 00:04:14,810 --> 00:04:20,230 It's does not much at all so we want it to swing in order to make it swing. 57 00:04:20,360 --> 00:04:25,400 Let's go ahead and select all of these right here and rotate it. 58 00:04:25,490 --> 00:04:28,560 But we wanted to rotate around the top here. 59 00:04:28,790 --> 00:04:36,050 So in order to do that let's left click to place our cursor up here and then change it from median point 60 00:04:36,110 --> 00:04:38,510 to 3D cursor. 61 00:04:38,510 --> 00:04:41,490 Now if I rotate it you can see what's happening. 62 00:04:41,750 --> 00:04:51,350 And then if I hit Alt A and rewind my animation first of a you can see that there we go all a wasn't 63 00:04:51,410 --> 00:04:52,690 working for some reason. 64 00:04:52,850 --> 00:04:58,790 You can see that our ball is swinging around our space right here. 65 00:04:58,910 --> 00:05:00,190 Pretty cool. 66 00:05:00,680 --> 00:05:03,470 Now I want it to have a little bit more mass to it. 67 00:05:03,470 --> 00:05:10,370 So selecting this ball or wrecking ball right here I'm going to go over here and select calculate mass 68 00:05:11,060 --> 00:05:14,900 and I'm actually not sure what wrecking balls are made out of glass right. 69 00:05:14,900 --> 00:05:21,110 They're made of glass or Elmina's like something that sounds heavy so I'm going to go ahead and go with 70 00:05:21,260 --> 00:05:23,550 the brass right here. 71 00:05:23,930 --> 00:05:27,040 Shift a holding Shift and left arrow. 72 00:05:27,050 --> 00:05:29,210 Let's go back to the beginning and hit all day. 73 00:05:30,380 --> 00:05:32,810 And now we can see what's happening. 74 00:05:32,810 --> 00:05:36,270 That's pretty cool effect but that's not what we want to happen. 75 00:05:36,320 --> 00:05:40,390 So you can see that now because the ball has a huge mass to it. 76 00:05:40,460 --> 00:05:44,950 It's actually so heavy that it breaks our chain in order to fix this. 77 00:05:44,960 --> 00:05:48,770 All we have to do is select all our links here. 78 00:05:50,110 --> 00:05:57,430 Right click our ball as the last object and select copy from active so that all of these links have 79 00:05:57,430 --> 00:06:00,400 the same mass to them as well. 80 00:06:00,400 --> 00:06:08,260 Now if we hit all day and of course we have to select our last link here and make sure that we de-select 81 00:06:08,320 --> 00:06:11,240 dynamic Alt A. 82 00:06:11,260 --> 00:06:18,920 Now you can see that it won't break off and has a heavier flow and motion to it and it won't break because 83 00:06:19,250 --> 00:06:19,940 the mass. 84 00:06:19,970 --> 00:06:23,060 What it does is it adds more heaviness and weight to it. 85 00:06:23,270 --> 00:06:25,630 But it also makes it stronger. 86 00:06:25,640 --> 00:06:28,040 So the more mass the stronger it will be. 87 00:06:28,310 --> 00:06:32,840 Of course if you have a chain were like for example around a dog and they're pulling it and they break 88 00:06:32,840 --> 00:06:37,680 it off or you want it to break off you can put the mast down. 89 00:06:37,700 --> 00:06:39,560 So now we have our wrecking ball. 90 00:06:39,560 --> 00:06:44,450 Let's go ahead and add our wall of cubes the wall of cubes. 91 00:06:44,450 --> 00:06:45,040 All right. 92 00:06:45,350 --> 00:06:50,660 Let's go ahead and hit shift A and let's change this back to median point. 93 00:06:50,720 --> 00:07:00,950 Not 3-D cursor hitting shift they add mesh cube G and Z to bring it up above the grid floor. 94 00:07:01,220 --> 00:07:10,750 Let's scale it down and hit control a and apply the scale of it to bring it down to the floor over here 95 00:07:11,670 --> 00:07:12,750 bring it back. 96 00:07:12,830 --> 00:07:16,710 Actually want a little bit bigger so let's scale it up a little more. 97 00:07:17,680 --> 00:07:20,720 And apply the scale once again with control a scale. 98 00:07:21,010 --> 00:07:28,730 Let's go to modifiers have add a modifier and let's add an array modifier where you change the offsets 99 00:07:29,200 --> 00:07:31,410 right here to the y axis. 100 00:07:31,410 --> 00:07:33,700 So let's put it in one. 101 00:07:33,780 --> 00:07:39,180 And one thing you want to make sure just like with the links you want to make sure that the cubes aren't 102 00:07:39,240 --> 00:07:41,240 intersecting with one another. 103 00:07:41,280 --> 00:07:44,440 Otherwise it's just going to explode and go crazy. 104 00:07:44,460 --> 00:07:46,640 So you want a little bit of spacing here. 105 00:07:46,890 --> 00:07:54,630 And the way we're going to do that is just increase this Llobet So one point zero to now we have a tiny 106 00:07:54,630 --> 00:08:02,250 bit of spacing in there and that's fine and dandy let's increase this so that fills up our entire plane 107 00:08:02,790 --> 00:08:06,770 and then let's go ahead and add another modifier array. 108 00:08:07,290 --> 00:08:11,340 And let's put it on the z axis for this one. 109 00:08:11,400 --> 00:08:14,190 So hitting 0 on that one. 110 00:08:14,580 --> 00:08:23,630 And then on this last number we're going to put one point zero two as well and increase the amount to 111 00:08:23,670 --> 00:08:27,120 however big you want your wallet to be. 112 00:08:27,120 --> 00:08:28,830 Now let's bring it down. 113 00:08:28,860 --> 00:08:30,680 All right so there's our wall. 114 00:08:30,690 --> 00:08:38,850 Now what we want to do is apply the array modifiers go ahead and apply them and now we can see that 115 00:08:38,850 --> 00:08:41,460 this is a single object. 116 00:08:41,560 --> 00:08:45,700 So we want all of these cubes to be individual objects. 117 00:08:45,930 --> 00:08:53,130 If we had to have to go into Edit Mode what we can do now is hitting the peak key you're given the option 118 00:08:53,130 --> 00:08:57,290 to separate these out by three different options. 119 00:08:57,390 --> 00:08:59,560 So we're going to select loose parts. 120 00:08:59,700 --> 00:09:02,730 If you remember they're spacing in between each cube. 121 00:09:02,910 --> 00:09:10,740 So if we hit P and loose parts it will actually make all of these cubes individual objects via the loose 122 00:09:10,740 --> 00:09:13,400 parts of our previous mesh. 123 00:09:13,440 --> 00:09:15,300 Pretty cool. 124 00:09:15,300 --> 00:09:15,530 All right. 125 00:09:15,540 --> 00:09:24,420 I'm going to select back all our cubes and now if we rewind our animation hit all of a and of course 126 00:09:24,420 --> 00:09:28,510 first we have to add the rigid body physics to our cube. 127 00:09:28,920 --> 00:09:38,590 Let's add rigid body and hit shift left arrow hit on a you can see that it's actually only added to 128 00:09:38,630 --> 00:09:38,950 1. 129 00:09:38,950 --> 00:09:41,990 We also have to do copy from active. 130 00:09:42,050 --> 00:09:42,470 All right. 131 00:09:42,470 --> 00:09:43,540 There we go. 132 00:09:43,700 --> 00:09:51,060 Now all day you can see that we have a rather interesting result. 133 00:09:51,060 --> 00:09:57,780 Now the reason that that's happening is because every single cube you can see that the origin or the 134 00:09:57,780 --> 00:10:04,230 center of origin for the cube is on the bottom right corner for each and every single one of them. 135 00:10:04,320 --> 00:10:10,880 And again the rigid body physics are based around the origin or the center origin of our cubes. 136 00:10:10,920 --> 00:10:18,130 So we just need to reset them so that the origin is in the center of each cube individually. 137 00:10:19,220 --> 00:10:21,890 Let's go ahead and select all our cubes. 138 00:10:21,960 --> 00:10:30,920 We're going to move this light as well out of the way select all our cubes de-select the the plane by 139 00:10:31,190 --> 00:10:35,530 hitting B and middle mouse clicking to de-select. 140 00:10:35,550 --> 00:10:40,280 Now with all our cubes selected Let's hit Control shift all. 141 00:10:40,290 --> 00:10:49,050 See I know that takes a lot of fingers to get all those keys down and then click origin to geometry. 142 00:10:49,050 --> 00:10:55,710 Now we have all our origins in the center of our geometry and let's go ahead and play our animation 143 00:10:55,710 --> 00:10:57,350 now and see what happens. 144 00:11:01,620 --> 00:11:02,790 Lujah. 145 00:11:02,980 --> 00:11:05,370 All right so that is pretty cool. 146 00:11:05,430 --> 00:11:08,580 And that is the rigid body simulation. 147 00:11:08,580 --> 00:11:11,640 And so here we just broke down a wall. 148 00:11:11,640 --> 00:11:15,250 Now one quick thing that we could take a look at if we had all day to play. 149 00:11:15,360 --> 00:11:19,000 You could see that playing kind of in a slowish motion. 150 00:11:19,200 --> 00:11:25,380 So what we're going to do is actually go over here to the scene tab and increase the speed to two. 151 00:11:25,380 --> 00:11:29,180 So now with the speed at two let's go ahead and play it. 152 00:11:29,310 --> 00:11:35,370 You can see that swinging a lot faster and the cubes are moving much more. 153 00:11:35,370 --> 00:11:38,460 We can also scale up our plane way high. 154 00:11:38,490 --> 00:11:43,130 Hit control Ada apply the scale rewind our animation and we play it. 155 00:11:43,140 --> 00:11:49,580 Now we can see that our cubes will actually interact with the floor and bounce off of the floor. 156 00:11:49,890 --> 00:11:50,820 Pretty cool. 157 00:11:50,820 --> 00:11:57,350 So there is a rigid body physics with the little simulation we did here with the wrecking ball. 158 00:11:57,390 --> 00:12:05,700 We saw how we use a physics for a chain object and how the how the physics interact with one another. 159 00:12:05,760 --> 00:12:13,750 Again if you want it to be passive meaning that it's it's a physics object but it won't move or be animated. 160 00:12:13,890 --> 00:12:18,090 Meaning the object will interact with it such as our plane floor. 161 00:12:18,240 --> 00:12:23,370 You could just like passive here but if you want them to be active such as everything else that's happening 162 00:12:23,370 --> 00:12:23,880 here. 163 00:12:24,060 --> 00:12:25,920 Make sure that they're active. 164 00:12:26,010 --> 00:12:30,360 All right so let's take a look at one last thing in the next Tauriel with rigid body physics and then 165 00:12:30,360 --> 00:12:34,440 we'll be done with this part of the course and tutorials. 166 00:12:34,440 --> 00:12:35,520 All right I'll see you there. 167 00:12:37,030 --> 00:12:42,520 All right for this little quote at the end of the video I took all the words the end and only made this 168 00:12:42,520 --> 00:12:49,150 for you if you take what you've believed all along and keep beating the drum to the same old song you'll 169 00:12:49,150 --> 00:12:55,010 keep running in circles all day long you'll know if it's not the correct way if it's wrong. 170 00:12:55,030 --> 00:12:58,830 So you got to take a different path and be strong. 171 00:12:58,910 --> 00:13:03,550 Ladies and gentlemen sometimes the path that we go down our whole life might not be the correct one. 172 00:13:03,550 --> 00:13:08,130 So take a look what path you're going down right now and if it's wrong make the change. 173 00:13:08,140 --> 00:13:10,570 Appreciate you guys have an amazing one. 174 00:13:10,570 --> 00:13:12,400 I know you're doing awesome on this course. 175 00:13:12,400 --> 00:13:13,950 I'll see you in the next tutorial. 176 00:13:13,990 --> 00:13:14,660 Oh. 177 00:13:14,740 --> 00:13:15,460 Take care.