WEBVTT 00:00.000 --> 00:00.390 Hello guys. 00:00.390 --> 00:01.290 Welcome to the video. 00:01.290 --> 00:04.530 In this one we're going to make another cool trap a really nice one. 00:04.530 --> 00:08.310 And we're going to do the soul the spinning soul trap. 00:08.310 --> 00:11.790 Let's take this trap spike and place it into the prefab folder. 00:13.220 --> 00:15.020 So we have it here saved. 00:15.020 --> 00:20.600 And I'm just going to take the trap from here and maybe, you know, place it somewhere here. 00:20.600 --> 00:21.920 I don't need it right now. 00:22.460 --> 00:24.920 Now let's go to graphics. 00:25.620 --> 00:26.460 Traps. 00:26.460 --> 00:31.260 So let's take all of the sprites and make pixel per unit 16. 00:31.440 --> 00:32.580 I'm going to hit apply. 00:32.610 --> 00:34.260 I'm going to take the. 00:35.600 --> 00:36.830 Uh, off sprayed. 00:36.860 --> 00:38.930 Just drag it to the scene, like so. 00:40.230 --> 00:43.170 We're going to change the name to trap. 00:43.470 --> 00:48.900 So let's change layer to ground and let's place it. 00:48.900 --> 00:51.120 No, sorry, not ground traps. 00:51.120 --> 00:53.340 And let's place it halfway into the ground. 00:53.370 --> 00:54.900 I really like how it looks. 00:54.900 --> 00:56.160 Really nice one. 00:56.430 --> 01:01.500 Um, now let's go and make animator for this one. 01:01.500 --> 01:02.790 Animations. 01:03.030 --> 01:07.170 We're going to make new animator controller trap. 01:07.470 --> 01:08.820 So AC. 01:10.930 --> 01:12.820 You're going to place it on the object. 01:13.060 --> 01:20.260 Also, we want to give it a circle collider you're going to make it is trigger and we're going to give 01:20.260 --> 01:22.120 it a damage trigger. 01:22.870 --> 01:24.160 Very cool. 01:24.160 --> 01:28.510 Now let's go to Animation Create new clip. 01:28.840 --> 01:32.860 I'm going to name it as maybe Trap so idle. 01:33.130 --> 01:35.560 And let's do trap so active first. 01:36.230 --> 01:38.030 On the graphics over here. 01:38.030 --> 01:39.110 We need trap. 01:39.350 --> 01:40.250 So. 01:40.250 --> 01:44.090 And let's take on all of the sprites and place them here. 01:44.120 --> 01:45.230 Very cool. 01:45.320 --> 01:47.600 Now we're going to make sample rate 20. 01:48.380 --> 01:52.220 And on the animator it's going to be the animation by default. 01:52.370 --> 01:54.290 Now let's create another clip. 01:55.120 --> 01:57.190 Trap soul idol. 01:57.910 --> 02:00.040 And we're going to make a boolean. 02:00.520 --> 02:02.950 Wait, we just need a sprite over here on the trap. 02:02.950 --> 02:03.760 So idle. 02:05.650 --> 02:13.810 Now we're going to make a boolean active and we're going to transfer to idle if active is false. 02:15.430 --> 02:16.000 Uncheck. 02:16.030 --> 02:16.300 Exit. 02:16.330 --> 02:16.810 Time. 02:16.810 --> 02:18.250 Duration zero. 02:19.140 --> 02:20.670 Then go back. 02:21.780 --> 02:22.800 Exact time unchecked. 02:22.800 --> 02:26.520 Transmission duration zero and condition would be active. 02:26.520 --> 02:27.120 True. 02:27.150 --> 02:27.990 Okay. 02:28.230 --> 02:29.250 Very nice. 02:29.280 --> 02:33.030 Now let's go back and just try to hit the drop. 02:33.030 --> 02:34.560 I want to see if it's working. 02:40.470 --> 02:42.180 Working except the animation. 02:42.180 --> 02:48.240 I didn't see the animation for some reason, or I guess because this boolean here is false by default. 02:48.240 --> 02:49.860 It's okay, we're going to fix it. 02:50.160 --> 02:51.540 Now let's just click it here. 02:51.540 --> 02:52.050 For now. 02:52.050 --> 02:54.780 It's going to be true and it's going to work. 02:56.720 --> 02:57.590 Very well. 02:57.590 --> 03:00.950 We have a trap that is spinning and it is very dangerous. 03:00.980 --> 03:03.620 Now let's make it move. 03:06.330 --> 03:07.350 Uh, how are we going to do that? 03:07.350 --> 03:08.670 We're going to need a script. 03:10.570 --> 03:12.880 C sharp script trap. 03:12.880 --> 03:13.750 So. 03:16.250 --> 03:18.110 I'm going to open the script. 03:19.580 --> 03:22.490 And inside of this script, we need a couple of things. 03:22.490 --> 03:25.130 First of all, we want to have a movement speed. 03:25.130 --> 03:27.950 So I'm going to do private plot move speed. 03:28.800 --> 03:32.430 Then we need to know where this object is going to move. 03:32.430 --> 03:35.100 So basically we need a waypoint. 03:37.340 --> 03:39.980 And not just one way point, but a bunch of them. 03:39.980 --> 03:45.800 Because of that, I'm going to make private transform array, and I've shown the arrays before, basically 03:45.800 --> 03:51.320 can store a bunch of variables under the one, and then you can get access to the variable with an index, 03:52.160 --> 03:54.980 uh, array of way point. 03:54.980 --> 03:55.730 Okay. 03:55.730 --> 03:57.590 And we need the index. 03:57.590 --> 04:00.560 I'm going to make it public for now so we can see how does it work. 04:00.560 --> 04:02.480 But later on I'm just going to hide it. 04:02.480 --> 04:04.160 So let's do public int. 04:04.970 --> 04:08.720 Waypoint index and I'm going to make it equals to one by default. 04:08.930 --> 04:11.750 Also, I guess speed could be three by default. 04:11.750 --> 04:12.950 Very cool. 04:13.010 --> 04:17.510 Now let's go and open start method. 04:17.510 --> 04:22.850 And in the start I want to set transform position of the object of the trap. 04:22.850 --> 04:25.250 So equals to waypoint. 04:26.310 --> 04:29.850 With an index of zero dot position. 04:29.850 --> 04:34.620 Because of that, the object will snap to the first position in the beginning of the game. 04:34.620 --> 04:36.270 Now we need an update method. 04:36.690 --> 04:42.450 Update and in the update method, we want to move objects from one point to another. 04:42.450 --> 04:45.690 Before we did that with the rigid bodies velocity. 04:45.690 --> 04:50.520 But now we can use transform position and we can change transform position with a time. 04:50.520 --> 04:54.450 Let's do transform position equals to vector two. 04:54.480 --> 05:02.130 Move towards from current position to the target position, and target position is waypoint with the 05:02.130 --> 05:03.570 index we have over here. 05:03.570 --> 05:08.820 So waypoint index and then dot position. 05:08.820 --> 05:10.140 And then over here. 05:10.140 --> 05:13.320 Basically we need to set the speed of the movement. 05:13.980 --> 05:18.270 But we cannot just use move speed because it will move super fast. 05:18.270 --> 05:18.960 We don't need that. 05:18.960 --> 05:23.670 We need frame independent movement to have frame rate independent movement. 05:23.670 --> 05:27.840 We can do move speed multiplied by time dot delta time. 05:27.840 --> 05:33.330 If you see time dot delta time for the first time, it basically returns interval and seconds from the 05:33.330 --> 05:35.010 last frame to the current one. 05:35.010 --> 05:41.700 If that sounds confusing, I'm just going to say that if you need some constant smooth movement and 05:41.700 --> 05:46.980 it should be frame rate independent, you just multiply value by time dot delta time and time. 05:46.980 --> 05:49.530 The delta time always change in itself. 05:49.530 --> 05:52.140 If you have low pH this while you're going to be bigger. 05:52.140 --> 05:56.520 If you have high pH this value, you're going to be smaller and it's always adjusting itself. 05:56.520 --> 06:00.480 So you basically have like sort of time in seconds okay. 06:01.750 --> 06:07.570 If all of that is confusing, just know that we're using time delta time to make it smooth and frame 06:07.570 --> 06:08.380 rate independent. 06:08.410 --> 06:13.510 Now that we move in object, actually, let's go and see how do we move the object. 06:13.540 --> 06:15.340 We want to know if it's working. 06:17.400 --> 06:18.360 On the trapsoul. 06:18.660 --> 06:24.390 We need to put the script and over here we have waypoints which are null at the moment. 06:24.390 --> 06:26.670 And waypoint index is equals to one. 06:26.670 --> 06:28.620 Now let's make a couple of objects. 06:28.620 --> 06:31.470 I'm going to make way point. 06:31.860 --> 06:34.740 I'm going to give it a gizmo so I can see it. 06:34.740 --> 06:36.420 And I'm going to duplicate it. 06:36.570 --> 06:41.070 So the first one going to be here, the second one going to be here. 06:41.100 --> 06:45.540 And we're going to open the Trapsoul and drag them into this array. 06:45.660 --> 06:50.040 What something important here is that we do not count, uh, elements from one. 06:50.040 --> 06:51.360 We count them from zero. 06:51.360 --> 06:57.240 So if you want to get first waypoint, you would have to type waypoint with the index zero. 06:57.240 --> 07:01.380 If you want to get second one you would have to type waypoint with the index one. 07:01.380 --> 07:03.960 So now we have waypoint zero and waypoint one. 07:03.960 --> 07:08.940 And according to the script we have it's going to place itself on the waypoint zero. 07:08.940 --> 07:15.090 And then it's going to move to the waypoint one because waypoint index is equals to one okay. 07:15.090 --> 07:16.110 Let's go. 07:18.780 --> 07:21.180 And we can see it is moving. 07:21.180 --> 07:22.050 Very cool. 07:22.050 --> 07:24.840 Now we have a goal to make it move back. 07:25.110 --> 07:26.610 That is very simple to do. 07:29.210 --> 07:30.770 In the update over here. 07:30.770 --> 07:36.950 I want to check if vector2 the distance between Transform.position and the waypoint. 07:36.950 --> 07:38.090 We currently have. 07:38.090 --> 07:40.730 Waypoint with a waypoint index. 07:42.190 --> 07:46.480 Dot position is less than 0.1 F means we are close enough. 07:46.480 --> 07:48.310 We can change waypoint index. 07:48.310 --> 07:50.140 So we're going to move to another waypoint. 07:50.140 --> 07:54.670 We can change it simply by simply by increasing the value. 07:54.670 --> 07:57.190 Let's just type waypoint index plus plus. 07:57.190 --> 08:00.460 And this will do it plus one every time we reach a new waypoint. 08:00.460 --> 08:07.030 And to secure ourselves, we want to check if waypoint index is not bigger than the length of the waypoints 08:07.030 --> 08:07.660 we have. 08:07.660 --> 08:13.030 Simply type here waypoint index bigger or equals to waypoint dot length. 08:13.030 --> 08:18.220 And if it is then we're going to do waypoint index equals to zero. 08:18.220 --> 08:20.950 So we're going to increase value by one every time. 08:20.950 --> 08:25.330 And if at some point it's going to be bigger or equals to waypoint dot length, then we're going to 08:25.330 --> 08:26.650 make it zero. 08:26.650 --> 08:28.060 So it's going to go back. 08:28.060 --> 08:31.540 Let's go to unity now and see how does this work. 08:37.170 --> 08:41.460 And we can see this cycle in between waypoints if you extend waypoints. 08:42.690 --> 08:43.830 Like that. 08:44.160 --> 08:46.800 It's going to fly between waypoints like that. 08:50.130 --> 08:52.410 Oh, I forgot to add it to the elements. 08:52.650 --> 08:55.410 Let's select the trapsoul and drag it here. 08:58.450 --> 09:00.760 And it's going to cycle between three points. 09:01.980 --> 09:04.020 There is something I want to do to improve it. 09:04.020 --> 09:07.140 As of now, you can see it moves in circle like that. 09:07.140 --> 09:12.930 What I want to do is to make it move, uh, sort of backwards when we need it to move back. 09:12.930 --> 09:18.960 So it's going to move here, then here, then back here, and again here, here, then back here, back 09:18.960 --> 09:20.160 here and like that. 09:20.160 --> 09:22.200 But we're going to do that in the next video. 09:22.200 --> 09:22.920 In this one. 09:22.920 --> 09:25.590 Let's just slightly improve it and move on okay. 09:25.590 --> 09:28.860 So I'm going to delete the waypoint over here. 09:30.000 --> 09:36.420 I'm going to have only two, and I want to add a bit of a delay to the movement of the trap. 09:36.720 --> 09:38.220 Let's go to the trap. 09:38.220 --> 09:45.120 So let's make Privatebool can move, and we're going to make it equal to true by default, because we 09:45.120 --> 09:46.650 want it to move from the start. 09:46.890 --> 09:54.060 Then I want to make a coroutine private I enumerator stop movement. 09:55.130 --> 09:57.230 You're going to pass float delay. 09:58.130 --> 10:01.670 And over here we're going to do can move equals to false. 10:02.060 --> 10:09.140 Then we're going to do yield return new wait for a seconds of a delay and then can move equals to true. 10:09.410 --> 10:11.540 And I think. 10:12.120 --> 10:14.640 You can add variables for the delay. 10:14.640 --> 10:16.770 Let's do serialized field private float. 10:16.770 --> 10:17.580 Cool down. 10:17.580 --> 10:19.770 I'm going to make it equals to one by default. 10:19.800 --> 10:20.850 Very nice. 10:20.850 --> 10:28.200 Now we need to start this coroutine every time we set in index to zero I guess, because for now we 10:28.200 --> 10:29.550 have only two waypoints. 10:29.550 --> 10:30.780 And please pay attention. 10:30.780 --> 10:35.460 This system is developed for the trap that works with two way points. 10:35.460 --> 10:38.850 If you want to have more waypoints, we're going to do that in the next video. 10:40.640 --> 10:46.640 So over here I'm going to do start coroutine stop movement with a cooldown. 10:46.940 --> 10:47.690 Okay. 10:48.690 --> 10:51.390 And in the update over here if you can move. 10:52.640 --> 10:56.270 Equals to false, then return. 10:56.360 --> 11:00.530 And we want to update boolean in the animator. 11:00.530 --> 11:04.910 So I'm going to make private Animator. 11:06.490 --> 11:07.240 Anim. 11:08.020 --> 11:10.270 Then we're going to get it in the awake. 11:10.300 --> 11:11.110 Awake. 11:11.950 --> 11:15.490 Awake enum equals to get component of animator. 11:15.490 --> 11:18.790 And then over here enum set bool. 11:19.820 --> 11:23.600 Of active two can move boolean. 11:23.600 --> 11:24.830 Very nice. 11:25.310 --> 11:27.320 And there is something else I want to do. 11:27.320 --> 11:28.580 I want to check. 11:29.770 --> 11:31.180 The damage direction. 11:31.180 --> 11:34.840 This is what we're going to do in this video, and then we're going to jump to the next one real quick. 11:35.460 --> 11:37.050 So as of now. 11:40.830 --> 11:42.720 Uh, active does not exist. 11:42.720 --> 11:43.740 What do you mean? 11:44.540 --> 11:45.860 Animator. 11:46.100 --> 11:47.810 Oh, I misspelled it. 11:47.810 --> 11:49.460 Okay, it should be active. 11:50.590 --> 11:51.640 Let's go. 11:54.530 --> 11:55.550 Moves there. 11:55.700 --> 11:56.540 Stops. 11:56.540 --> 11:57.740 Moves back. 11:57.830 --> 11:59.870 We also need to flip the sprite. 12:00.410 --> 12:02.660 We can do it right now, I think. 12:02.990 --> 12:05.000 Then let's work on a damage direction. 12:05.000 --> 12:06.860 Then we're going to jump to the next video. 12:07.460 --> 12:11.240 So to flip the sprite we can get access to the component of a sprite renderer. 12:11.240 --> 12:17.060 And we can check this flip x true false true false every time we need to do it. 12:17.240 --> 12:18.590 Simple as that. 12:18.620 --> 12:20.240 Let's go to the trap. 12:20.240 --> 12:23.240 So let's do private. 12:24.270 --> 12:27.390 Uh, sprite renderer SR. 12:27.920 --> 12:32.180 Then in that week we're going to do SR equals to get component. 12:32.180 --> 12:34.160 And every time we. 12:35.430 --> 12:37.200 Return movement to the object. 12:37.200 --> 12:39.930 We're going to do s r flip x. 12:40.970 --> 12:43.400 Equals to naught as our flip X. 12:43.400 --> 12:46.850 Because it's a boolean, it can be switched to an opposite value. 12:46.970 --> 12:51.770 The very same thing we did on the player when we changed facing the right boolean. 12:52.420 --> 12:53.230 Okay. 12:54.480 --> 12:55.680 Now let's go. 12:55.680 --> 12:57.300 And I'm going to show you something. 12:57.300 --> 13:02.880 At the moment, the knockback of a player works accordingly to the facing direction we have. 13:02.880 --> 13:09.180 So even if I stand over here and look to the left, I'm going to be knocked to the right. 13:09.810 --> 13:11.160 Same goes here. 13:11.160 --> 13:16.200 And I want to change knockback direction according to the source of the damage we have. 13:16.200 --> 13:17.340 How are we going to do that? 13:17.340 --> 13:21.570 When we call a knockback we're going to pass position. 13:22.390 --> 13:24.760 Of the source damage to the player. 13:24.760 --> 13:29.050 When we call a knockback, then we're going to see if trap. 13:29.050 --> 13:37.090 So X position is bigger than player's X position means the source damage is from the right and we need 13:37.090 --> 13:38.530 to be knocked to the left. 13:38.530 --> 13:41.110 We need to make knockback direction minus one. 13:41.110 --> 13:48.580 If an opposite thing is happening, an x position of the player is bigger than x position of the. 13:49.770 --> 13:55.200 The source of the damage, then we need to be knocked to the right and knockback direction should be 13:55.200 --> 13:56.460 equals to one. 13:57.240 --> 14:00.840 So we're going to go to the player. 14:01.700 --> 14:02.720 Over here. 14:05.750 --> 14:07.070 We're gonna pass. 14:07.070 --> 14:08.030 Float. 14:08.910 --> 14:12.450 Source damage X position. 14:12.900 --> 14:15.660 Then over here we're going to make float. 14:16.520 --> 14:19.670 A knock back direction equals to one. 14:19.670 --> 14:22.730 So it's going to be one every time we call in a method. 14:22.820 --> 14:25.670 And then we're going to check if. 14:26.600 --> 14:28.400 Transform position. 14:28.990 --> 14:32.380 Dot x of the player is less. 14:33.590 --> 14:35.870 Then source damage exposition. 14:35.870 --> 14:41.870 Then it means we are on the left side from the source of the damage, and we need to be knocked to the 14:41.870 --> 14:42.500 left. 14:42.500 --> 14:47.510 And for that we're going to do knockback direction equals to minus one okay. 14:49.090 --> 14:52.780 And now we can just use knockback direction over here. 14:54.160 --> 14:55.240 Very cool. 14:55.360 --> 15:01.300 Okay, now let's save what we have here and let's go to the damage trigger over here. 15:02.050 --> 15:07.960 And over here we need to pass X position and we're just going to pass transform position dot x. 15:08.170 --> 15:09.220 Simple as that. 15:09.250 --> 15:12.610 Now we can go back to unity and see the difference. 15:13.270 --> 15:14.500 I can move into the trap. 15:14.500 --> 15:16.450 I'm going to be knocked same as before. 15:16.960 --> 15:22.840 If I go to the trap and I faced another direction, still, I'm going to be knocked to the left and 15:22.840 --> 15:23.590 to the right. 15:24.310 --> 15:25.450 Which is very good, right? 15:25.450 --> 15:27.580 It's more how it's supposed to be, I think. 15:27.580 --> 15:28.120 Yeah. 15:28.300 --> 15:29.140 Very well. 15:29.140 --> 15:31.960 Now, there is something I want to tell you about these waypoints. 15:31.960 --> 15:36.070 You're going to make it better, but as of now, it should be just like so in the hierarchy. 15:36.070 --> 15:40.300 And in the next video, I'm going to show you what to do with it and how to make it cleaner, how to 15:40.300 --> 15:42.820 not clutter up the hierarchy we have at the moment. 15:42.820 --> 15:44.470 But that's going to be in the next video. 15:44.470 --> 15:45.160 I'll see you there.