WEBVTT 00:00.020 --> 00:00.440 Hello guys. 00:00.440 --> 00:01.430 Welcome to the video. 00:01.430 --> 00:04.370 In this one I want to show you how to make a fire trap. 00:04.370 --> 00:06.080 It's going to be a super simple one. 00:06.080 --> 00:07.250 There is a button. 00:07.250 --> 00:12.710 You step on a button to switch off the fire, then you run, then fire switches on back again. 00:12.710 --> 00:14.090 This is how it's going to be. 00:14.090 --> 00:19.130 First, what I want to do is to maybe take some things away from the level because they distracted me. 00:19.130 --> 00:20.390 So I'm going to delete arrow. 00:20.420 --> 00:22.190 I want to switch on the trampoline. 00:22.190 --> 00:23.420 I kind of like it. 00:23.720 --> 00:25.700 So I'm going to place it over here. 00:25.700 --> 00:31.010 And then following platform I'm going to remove it remove it remove it. 00:31.010 --> 00:33.140 Spike ball remove it okay. 00:33.140 --> 00:36.950 Now let's develop the trap fire. 00:37.010 --> 00:38.930 First we want to make GameObject. 00:38.930 --> 00:40.940 And also we want to set up controllers. 00:41.150 --> 00:44.510 Let's go to Graphics Traps fire. 00:44.510 --> 00:46.070 I'm going to select all of them. 00:46.070 --> 00:48.200 Make pixel per unit 16. 00:49.470 --> 00:53.610 Then we're going to take the fire itself, drag it to the scene. 00:53.970 --> 00:57.840 Let's name it as, uh, trap fire. 00:59.180 --> 01:02.480 Is going to be traps sorting layer. 01:02.480 --> 01:04.520 Let's give it a capsule collider. 01:04.520 --> 01:10.790 This time capsule Collider 2D because I think the shape is fitting the shape of the trap very well. 01:10.790 --> 01:11.960 So this is how it should be. 01:11.960 --> 01:16.160 And let's make it is trigger because this one going to damage the player. 01:16.730 --> 01:17.390 Yeah. 01:18.470 --> 01:20.840 Now we need an animator for this one. 01:20.840 --> 01:24.530 Let's go to animations, traps, controllers. 01:24.530 --> 01:29.060 Let's make animator controller trap fire. 01:29.060 --> 01:34.670 And also, while we are here, let's make animator for the button trap fire. 01:35.360 --> 01:36.200 Button. 01:36.200 --> 01:37.070 Okay. 01:37.220 --> 01:37.850 We're going to put. 01:37.880 --> 01:39.560 Trap fire on this one. 01:39.830 --> 01:42.320 And then we're going to make an animation. 01:42.320 --> 01:46.190 Let's go to assets animation traps. 01:46.190 --> 01:49.430 We're going to do trap fire active. 01:51.520 --> 01:54.490 When I go to graphics traps fire. 01:54.490 --> 01:56.980 Let's take on drag them here. 01:56.980 --> 01:58.540 Sample rate 20. 01:59.020 --> 02:00.340 Now there is a fire. 02:00.340 --> 02:02.290 We also need an off animation. 02:02.290 --> 02:04.840 So I'm going to do trap fire idle. 02:05.910 --> 02:07.560 I'm just going to drag it here. 02:07.560 --> 02:09.300 So now it's switched off. 02:09.330 --> 02:10.380 Very cool. 02:10.500 --> 02:15.120 Now we can go to animator itself and set up Boolean parameter bool. 02:15.730 --> 02:16.480 Active. 02:18.500 --> 02:23.330 Uh, we're going to transfer to idle if active is false. 02:23.330 --> 02:24.380 No exit time. 02:24.380 --> 02:26.180 Transition duration zero. 02:26.210 --> 02:27.860 Then we're going to transfer back. 02:28.860 --> 02:30.540 If active is true. 02:30.540 --> 02:30.810 Now. 02:30.810 --> 02:31.380 Exit time. 02:31.380 --> 02:32.910 Transition duration zero. 02:33.090 --> 02:35.640 Okay, job, fire is ready. 02:35.670 --> 02:37.230 Now let's make a button. 02:38.910 --> 02:40.350 Going to take one of the sprites. 02:40.350 --> 02:41.430 I want to take this one. 02:41.430 --> 02:42.540 Drag it here. 02:44.050 --> 02:45.760 And let's make it as Trump. 02:46.550 --> 02:50.090 Fire button and I'm going to make it as a child of a trap. 02:50.090 --> 02:50.570 Fire! 02:50.600 --> 02:51.440 Okay. 02:51.590 --> 02:55.370 We need animator controller, and I think we can just type here. 02:55.370 --> 02:56.900 Trap, fire. 02:57.620 --> 02:58.460 Uh, no, it's not there. 02:58.460 --> 03:00.500 Okay, let's add animator. 03:00.500 --> 03:02.090 Then we're going to open animator. 03:02.090 --> 03:06.290 Click over here and find this trap fire button. 03:06.710 --> 03:07.820 Okay cool. 03:08.120 --> 03:11.510 Let's make certain layer as a traps. 03:11.510 --> 03:15.260 Then on the animator we're going to make a couple of animations. 03:15.260 --> 03:21.860 Let's do create asset animations traps trap fire button. 03:21.860 --> 03:22.790 Uh idle. 03:22.790 --> 03:25.310 It's going to be just this sprite. 03:25.310 --> 03:29.150 And then one more trap fire button. 03:30.060 --> 03:31.440 Activated. 03:32.700 --> 03:37.290 And we're going to take all of the sprites, drag them here, make sample rate 20. 03:37.320 --> 03:38.520 Nice. 03:38.610 --> 03:42.510 Let's transfer to activate it with a trigger. 03:42.990 --> 03:44.130 Activate. 03:45.070 --> 03:47.290 So there's going to be condition for the transition. 03:47.290 --> 03:51.040 Activate transition duration zero exit time uncheck. 03:51.490 --> 03:54.610 Then we're going to go back over here and do. 03:56.000 --> 03:57.050 Exit time one. 03:57.050 --> 03:58.550 Transition duration zero. 03:58.580 --> 04:02.030 Now I'm doing nothing different from what we did before all of this. 04:02.030 --> 04:04.970 You know very well we did a bunch of traps, a bunch of setups. 04:04.970 --> 04:07.670 This is basically the same, just combination of what we learned. 04:07.670 --> 04:11.900 And I think I'm going to make this trap as a last one because it's time to move to another section. 04:11.900 --> 04:12.530 Yeah. 04:12.710 --> 04:14.960 Let's go to the scene. 04:17.390 --> 04:17.960 Yeah. 04:17.960 --> 04:20.780 On this button we need box collider so it can be triggered. 04:20.780 --> 04:22.250 Box Collider 2D. 04:22.430 --> 04:24.950 Let's set ease trigger over here. 04:25.400 --> 04:28.820 And this is probably all for the initial setup. 04:28.820 --> 04:31.040 This has a trigger collider okay. 04:31.040 --> 04:33.740 And this is a trap fire okay. 04:34.100 --> 04:36.230 Now let's go to scripts. 04:36.230 --> 04:39.200 And I think we can make a folder for the trap scripts. 04:41.580 --> 04:42.390 Trump's. 04:43.830 --> 04:46.470 Going to take the traps and drag them to the folder. 04:46.500 --> 04:51.000 Okay, now we're going to go inside and make two new scripts. 04:51.420 --> 04:52.830 One of them going to be. 04:53.960 --> 04:54.710 Trap. 04:55.580 --> 04:56.270 Fire. 04:57.140 --> 05:00.020 Another one going to be I is going to pop up now. 05:00.020 --> 05:02.030 I hate it, I know it's fine. 05:02.030 --> 05:06.500 Another one going to be trap fire button. 05:09.730 --> 05:10.090 Okay. 05:10.090 --> 05:11.290 This is what we have now. 05:11.290 --> 05:13.300 We're going to select Trapwire button. 05:13.390 --> 05:14.920 Give it a script. 05:14.920 --> 05:19.990 And on the trapwire we're going to select I mean put Trapwire okay. 05:19.990 --> 05:22.060 Now let's go inside of the scripts. 05:22.060 --> 05:26.380 You're going to need trap and trap fire button on the trap itself. 05:26.380 --> 05:32.440 We're going to make a method that would activate the fire or deactivate the fire according to the boolean 05:32.440 --> 05:33.520 we pass in there. 05:33.790 --> 05:40.690 So I'm going to do private void set fire bool active. 05:41.910 --> 05:45.360 And now we need to change a bunch of parameters according to the boolean we have. 05:45.390 --> 05:47.640 So one of them would be animation. 05:47.640 --> 05:49.860 So private animator anim. 05:50.760 --> 05:55.140 Also, there is a capsule collider because if we don't switch it off, we still can be damaged. 05:56.020 --> 05:57.250 Let's do Collider. 05:57.460 --> 05:58.060 We cannot do that. 05:58.060 --> 05:58.690 Okay. 05:58.990 --> 06:00.400 Wire Collider. 06:00.400 --> 06:01.840 And we. 06:02.290 --> 06:08.410 I think we just need a boolean private bool to know if wire is active is active. 06:08.410 --> 06:10.930 Then in this method we're going to do this. 06:11.840 --> 06:20.390 Um, we can just do enum set bool of active to active that we pass in through the parentheses. 06:20.390 --> 06:26.450 We can also do fire collider enabled equals to active and is active equals to active. 06:26.450 --> 06:27.500 Just like that. 06:27.800 --> 06:29.510 Now let's. 06:30.440 --> 06:33.860 Now make a coroutine that would switch off the fire. 06:33.890 --> 06:36.530 Wait for the cooldown and switch it on. 06:36.950 --> 06:41.210 Right, we need a cooldown itself, so I'm going to do serialize field private float. 06:41.240 --> 06:43.280 Let's do off duration. 06:43.990 --> 06:46.720 And then there's going to be enumerator. 06:47.940 --> 06:49.650 Via coroutine. 06:50.360 --> 06:51.800 Let's type here private. 06:51.800 --> 06:53.000 So it's pretty. 06:53.180 --> 06:54.980 Then we're going to do set fire. 06:55.900 --> 06:58.180 Pulse, it's going to switch it off. 06:58.180 --> 06:58.870 Then we're going to do. 06:58.900 --> 06:59.200 Yield. 06:59.200 --> 07:00.550 Return new. 07:00.550 --> 07:03.460 Wait for a seconds of duration. 07:03.460 --> 07:04.930 Then we're going to do set fire. 07:04.960 --> 07:05.350 True. 07:05.350 --> 07:06.910 So we're going to switch it on. 07:06.970 --> 07:09.730 Also we want to switch on the fire at the start. 07:09.730 --> 07:12.130 So I'm going to do start set fire. 07:12.130 --> 07:12.940 True. 07:12.940 --> 07:16.810 And also we want to get these components in the wake. 07:17.020 --> 07:18.730 So I'm going to do a wake. 07:19.560 --> 07:22.200 Einem Getcomponent via Collider. 07:22.230 --> 07:24.240 Getcomponent of a capsule collider. 07:24.240 --> 07:25.740 This is perfect. 07:25.980 --> 07:28.290 Now what we need or I'm so sorry. 07:28.290 --> 07:30.330 Now what we need is to. 07:31.800 --> 07:35.580 Let me somehow move it closer so you can see everything together. 07:39.330 --> 07:40.110 Yes, this will do. 07:40.200 --> 07:43.650 Now we need to call this coroutine. 07:43.650 --> 07:47.040 We need to start this coroutine from outside of this script. 07:47.040 --> 07:51.690 We want to start this coroutine when player enters the button trigger. 07:51.690 --> 07:55.890 And also, just in case, I want to be sure there is always a fire button. 07:55.890 --> 07:58.380 So I want to make a reference to a. 07:59.350 --> 08:00.400 The serialized field. 08:00.400 --> 08:01.870 Private trap. 08:01.870 --> 08:03.100 Fire button. 08:03.550 --> 08:05.080 Fire button. 08:05.080 --> 08:09.880 And then in the start over here, I'm going to check if fire button equals to null. 08:09.880 --> 08:12.250 Then I'm going to do debug log warning. 08:13.300 --> 08:16.780 You don't have fire button. 08:17.480 --> 08:18.110 On. 08:19.170 --> 08:19.710 Last game. 08:19.710 --> 08:20.880 Objectname. 08:20.880 --> 08:23.250 And basically that's just it. 08:23.250 --> 08:24.660 Let's just do it like that. 08:24.660 --> 08:27.660 So it's going to give us a message if we're missing a fire button. 08:28.500 --> 08:30.540 And let's make a public method. 08:31.380 --> 08:37.230 Public void switch off fire, which would do just startcoroutine. 08:37.260 --> 08:38.940 Of a fire coroutine. 08:39.480 --> 08:40.530 Nice. 08:40.650 --> 08:41.850 This is ready. 08:42.210 --> 08:43.980 So this one is pretty simple, I guess. 08:43.980 --> 08:46.260 Much easier than things we did before. 08:46.440 --> 08:48.360 Now let's go to trap fire button. 08:48.900 --> 08:49.830 Over here. 08:49.830 --> 08:51.390 We want to get a reference. 08:51.390 --> 08:53.340 Private trap fire! 08:53.970 --> 08:54.990 Trap fire. 08:54.990 --> 08:58.140 And we need animator private animator anim. 08:58.140 --> 09:06.840 Then in the wake, we can do anim and then trap fire equals to getcomponent in parent of a trap fire. 09:06.870 --> 09:07.800 Nice. 09:07.800 --> 09:09.120 Then we need on trigger. 09:09.120 --> 09:10.050 Enter 2D. 09:11.440 --> 09:13.720 And we're going to check player. 09:13.720 --> 09:18.940 Player equals to collision game beam object player. 09:18.940 --> 09:24.280 If player not equals to null then anim set trigger of activate. 09:24.280 --> 09:31.390 So we activate the buttons animation and we take trap fire and ask it to switch off the fire. 09:31.420 --> 09:33.640 All right that's all what we need. 09:34.060 --> 09:40.150 I think I'm going to clean it up also, just in case when I show you script here. 09:42.310 --> 09:44.440 Maybe let's squeeze it like so. 09:49.170 --> 09:51.000 Oh is active is not used. 09:51.000 --> 09:51.630 Yeah. 09:51.660 --> 09:53.520 Actually, let's go to this method. 09:54.190 --> 09:55.540 And type this. 09:57.360 --> 09:58.260 Sorry. 09:58.980 --> 09:59.190 Like. 09:59.190 --> 10:07.260 So if is active, then return button cannot be activated if fire is active already. 10:07.260 --> 10:08.010 Okay. 10:08.610 --> 10:12.480 Well button will be activated, but we will not be able to start a coroutine. 10:12.480 --> 10:13.590 Let's go back. 10:16.650 --> 10:17.160 Over here. 10:17.160 --> 10:19.230 We want to assign trap fire button. 10:19.230 --> 10:22.440 Let's make duration maybe 2.5 seconds. 10:22.740 --> 10:24.210 And the fire button itself. 10:24.210 --> 10:27.150 I think we don't need anything else on the trap. 10:27.150 --> 10:27.600 Fire. 10:27.600 --> 10:29.490 I think we need the image trigger. 10:29.640 --> 10:30.360 Okay. 10:30.360 --> 10:31.320 Very cool. 10:31.320 --> 10:33.540 Now, let's say you need a prefab of this. 10:33.540 --> 10:35.640 You can just make it as a prefab. 10:35.640 --> 10:41.580 And next time you need a trap fire, you just have to take the trap fire on the level, place it where 10:41.580 --> 10:42.510 you want it to be. 10:42.510 --> 10:48.270 For example, I want to place it over here, and then you take the button itself and move it somewhere, 10:48.270 --> 10:50.700 and you just place the button over here. 10:51.120 --> 10:54.090 Now we're going to go to the game mode. 10:56.860 --> 10:59.530 Let's say I fell over here. 10:59.530 --> 11:01.270 There is my fire trap. 11:03.060 --> 11:04.320 Gonna go ahead. 11:05.990 --> 11:07.250 Activate the button. 11:07.250 --> 11:12.800 Oh, animation is activated, but fire is not switching off. 11:13.710 --> 11:15.240 Oh, let me see why. 11:18.010 --> 11:18.460 Probably. 11:18.460 --> 11:19.540 I made a mistake. 11:21.970 --> 11:23.020 Yeah, this one should be. 11:23.020 --> 11:27.220 If is active false, then return. 11:27.220 --> 11:27.850 Okay. 11:30.650 --> 11:31.910 Let me try again. 11:38.040 --> 11:39.210 Now there is some. 11:39.210 --> 11:40.020 It's okay. 11:40.020 --> 11:40.890 Doesn't matter. 11:43.890 --> 11:47.850 Switched off the fire running and boom, fire is on. 11:48.090 --> 11:51.870 There is a damage, so I have to switch it off before I go further. 11:52.850 --> 11:54.830 Really nice, I like it. 12:06.430 --> 12:08.080 Turn turn, turn. 12:10.420 --> 12:12.730 Well, this could be a fun game, honestly. 12:13.090 --> 12:16.750 Okay, that's it for this video and let's go to the next one.