WEBVTT 00:00.120 --> 00:05.960 Once our enemy game object fire on this player game object, then this player need to take damage. 00:05.960 --> 00:10.000 So we're going to do the same thing as we have done in this anime game object. 00:10.000 --> 00:16.320 Firstly, we need to give some health amount to this player game object and then we can just take damage. 00:16.320 --> 00:19.000 So let's select our player GameObject in the hierarchy. 00:19.000 --> 00:21.280 And let's open up the player script quickly. 00:21.840 --> 00:23.680 And let's go to the top of our class. 00:23.680 --> 00:29.160 And we're going to declare a variable, or we're going to give some help to our player game object. 00:29.160 --> 00:33.280 So let's make a public and that will be int whole numbers. 00:33.280 --> 00:36.280 And we can call this one to something like Maxhealth. 00:36.480 --> 00:40.560 And by default I'm going to give around five unit of health. 00:40.560 --> 00:42.800 And let's close that up with semicolon. 00:43.000 --> 00:46.800 And let's make a takedamage function in order to take damage. 00:46.800 --> 00:48.880 So I'm going to make it somewhere in the bottom. 00:48.880 --> 00:52.880 Somewhere over here you can make it anywhere you want. 00:53.120 --> 00:56.960 So it basically doesn't need to be in order. 00:57.160 --> 01:02.780 And we need to make this function public because we're going to call this function another class or 01:02.780 --> 01:08.860 another C script where enemy is attacking on our player game object or shooting. 01:09.060 --> 01:11.500 So let's make a public for function. 01:11.500 --> 01:13.860 We're going to type void and we have to name the function. 01:13.860 --> 01:19.740 So I'm going to call it something like take damage and take damage and make first bracket and some curly 01:19.740 --> 01:20.580 brackets. 01:20.740 --> 01:23.980 And this takedamage function just going to take an argument. 01:23.980 --> 01:26.580 So we're going to pass int damage. 01:26.700 --> 01:30.820 And later on we can just replace this damage in damage variable. 01:31.140 --> 01:33.460 The number we would like to go with. 01:33.460 --> 01:37.100 So we can go with any number that we would like to go with. 01:37.140 --> 01:39.220 For now let's go to Maxhealth. 01:39.260 --> 01:40.580 So we need to subtract. 01:40.580 --> 01:42.180 So we will type Maxhealth. 01:42.340 --> 01:47.140 And we're going to subtract from this Maxhealth minus equal this damage amount. 01:47.340 --> 01:49.500 And let's close that up with semicolon. 01:49.500 --> 01:53.100 So let's suppose we call this takedamage function for the first time. 01:53.100 --> 01:54.540 So the maxhealth by default. 01:54.540 --> 01:56.620 As you can see we have given five. 01:56.620 --> 01:59.260 So this is going to be over here five. 01:59.380 --> 02:05.760 And let's suppose as a damage parameter you just or you just replace this damage a parameter with something 02:05.760 --> 02:06.400 like one? 02:06.840 --> 02:11.000 So the maxhealth is five, so five minus one is going to be four. 02:11.040 --> 02:14.040 And if we call this takedamage function for the second time. 02:14.040 --> 02:15.640 So the max is now four. 02:15.640 --> 02:17.760 So four minus one is just going to be three. 02:17.760 --> 02:20.880 And if we call this takedamage function for the third time. 02:20.880 --> 02:22.480 So the maxhealth is now three. 02:22.480 --> 02:24.440 So three minus one is going to be two. 02:24.640 --> 02:28.520 And if we call this takedamage function for the fourth time. 02:28.520 --> 02:30.080 So the maxhealth is now two. 02:30.120 --> 02:32.160 So two minus one just going to be one. 02:32.400 --> 02:37.040 And if we call this a takedamage function for the last time or the fifth time. 02:37.040 --> 02:39.000 So the maxhealth is now one. 02:39.000 --> 02:41.120 So one minus one is going to be zero. 02:41.240 --> 02:46.840 So the max health of our player game object will at some point it's gonna hit zero. 02:47.040 --> 02:49.880 And let's suppose the max health is already zero. 02:49.880 --> 02:56.040 And if we call this takedamage function so the max is zero, so zero minus one is just going to be minus 02:56.040 --> 02:56.480 one. 02:56.480 --> 02:58.760 So it will move over to negative value. 02:58.760 --> 03:04.640 So before we go to negative value we need to check if the max health of our player game object is already 03:04.640 --> 03:05.160 zero. 03:05.240 --> 03:07.620 Then we need to stop taking damage. 03:07.620 --> 03:10.020 Or we need to stop taking damage. 03:10.020 --> 03:14.420 Or we basically don't need to take damage anymore. 03:14.540 --> 03:20.660 So before we subtract or, uh, basically take damage, we just want to check if max health. 03:20.660 --> 03:24.620 So we're going to check if this max health is lesser than or equal to zero. 03:24.740 --> 03:26.020 So in that situation. 03:26.020 --> 03:27.860 So let's make some curly brackets. 03:28.300 --> 03:32.420 Uh so in that situation what we're going to do, we're going to type this return. 03:32.420 --> 03:38.540 And we do know that after return, what ever line of code we're going to write it will not be execute 03:38.580 --> 03:43.140 means uh, this our max health of player game object will start at zero. 03:43.540 --> 03:46.580 And once it's zero then we just typing return. 03:46.580 --> 03:53.300 And we do know after return, whatever we're going to do will not be execute means our player Max health 03:53.300 --> 03:54.700 will start at zero. 03:54.820 --> 03:59.620 And let's suppose the max health of player game object is already zero by now. 03:59.620 --> 04:03.340 So in that situation we need to destroy our player game object. 04:03.340 --> 04:06.260 Basically player don't have any health so that's why. 04:06.460 --> 04:08.960 So let's make a Di function in order to do it. 04:08.960 --> 04:10.920 And I'm going to make in the bottom. 04:11.160 --> 04:13.920 And this function doesn't need to be public. 04:13.920 --> 04:16.240 So we can simply type void for function. 04:16.240 --> 04:18.000 And we have to name the function. 04:18.000 --> 04:22.320 So I'm going to call it something like type make first bracket and some curly brackets. 04:22.320 --> 04:28.520 So what we want to do inside this function we just want to destroy our player game object right away. 04:28.520 --> 04:33.240 But before we destroy, let's have a look like printing out a message in the console. 04:33.240 --> 04:35.640 Say something like player type, something like that. 04:35.640 --> 04:37.080 We're gonna print out. 04:37.080 --> 04:39.840 So for printing out, we're gonna type debug dot log. 04:40.000 --> 04:45.400 And we have to pass the string that we want to see underneath our console tab. 04:45.400 --> 04:50.000 So I'm going to pass this dot object dot name. 04:50.240 --> 04:53.760 And top of that I'm going to add a message something like diet. 04:53.760 --> 04:59.680 So we're gonna type this plus icon in order to add a custom message and make this quotation. 04:59.680 --> 05:03.840 And I'm going to say something like diet and then close that up with semicolon. 05:03.840 --> 05:07.320 So this dot game object basically is just referencing itself. 05:07.320 --> 05:09.420 And then we just accessing the name. 05:09.420 --> 05:11.060 So the name just gonna be clear. 05:11.060 --> 05:15.380 So this dot game object, basically this player game object just referencing itself. 05:15.500 --> 05:21.180 And by that we just accessing this name and we can see the name in the inspector is player. 05:21.180 --> 05:25.060 So this over here, this dot game object dot name just gonna be player. 05:25.060 --> 05:30.260 And top of that we just added a custom message style as you can see. 05:30.420 --> 05:35.300 So player diet message will be printed out whenever we're gonna call this die function. 05:35.740 --> 05:40.940 So we're going to call the die function in this update function in top of our update function. 05:41.380 --> 05:44.860 Because we do know that update function runs every single frame. 05:44.860 --> 05:49.900 So every single frame we're going to keep track of how much health the player game object currently 05:49.900 --> 05:50.260 have. 05:50.460 --> 05:54.460 And if the max cell is zero, then we're going to call this die function. 05:54.460 --> 05:58.500 And this die function is just going to print out this message in the console. 05:58.500 --> 05:59.660 So let's do that. 05:59.660 --> 06:02.300 So we're gonna move over to this update function. 06:02.300 --> 06:10.440 And top of this update function I'm going to check if if max health is max health is less than or equal 06:10.440 --> 06:11.080 to zero. 06:11.120 --> 06:14.520 If that is the case, then we're going to make some curly brackets. 06:14.520 --> 06:18.200 Means our player game object just loses all of his health. 06:18.240 --> 06:20.280 Then now we're going to call the type function. 06:20.280 --> 06:23.200 So let's call the die function here and make first bracket. 06:23.240 --> 06:25.160 Then close that up with semicolon. 06:25.320 --> 06:27.120 And what this function is doing. 06:27.160 --> 06:33.080 It's really printing out the message in the console player type, as you can see over here. 06:33.080 --> 06:36.440 And we're going to press down Ctrl S in order to save our script. 06:36.440 --> 06:37.960 And let's move to unity. 06:37.960 --> 06:42.440 So we also need to call the Takedamage function in order to take damage. 06:42.440 --> 06:46.880 Or else this player GameObject not gonna lose any of his health. 06:47.640 --> 06:51.040 So the die function not gonna call at all. 06:51.040 --> 06:53.880 So we also need to call the Takedamage function. 06:53.880 --> 07:00.520 But when we need to call that Takedamage function, once our enemy GameObject shoot on this player game 07:00.560 --> 07:06.360 object, then at that moment we're going to do and we do know we're doing inside our enemy script we're 07:06.360 --> 07:07.480 just printing out. 07:07.880 --> 07:09.120 Let me show you first. 07:09.120 --> 07:12.860 So if I select my console tab and then click on this play button in the top. 07:12.860 --> 07:14.660 In order to play our game. 07:14.660 --> 07:21.300 You will see as soon as the game is gonna start and this anime game objects start shooting on our player 07:21.340 --> 07:22.260 game object. 07:22.260 --> 07:28.020 So let's have a look on this and let's get closer to this anime game object. 07:28.700 --> 07:35.780 And we can see as soon as we get, uh, a message in the console says player takes damage just getting 07:35.780 --> 07:38.220 pop up instead of printing out message. 07:38.220 --> 07:43.620 What this player game object need to do this player game object need to take damage. 07:43.620 --> 07:44.460 So let's do that. 07:44.460 --> 07:49.340 So we're gonna get out of play mode, and let's double click on this message in order to move that line 07:49.380 --> 07:49.900 of code. 07:49.900 --> 07:52.540 And we do know we're doing inside this anime script. 07:52.540 --> 07:58.180 As you can see in the left bar, you can see and we're shooting out our way over here. 07:58.180 --> 08:01.020 So the if hit info is basically true. 08:01.020 --> 08:02.900 If that is the case, then what are we doing? 08:02.900 --> 08:04.780 We just printing out a message. 08:04.820 --> 08:11.740 If info basically true means the ray, uh, the enemy that shoot out the ray and the ray basically colliding 08:11.740 --> 08:12.660 with this player. 08:12.660 --> 08:15.240 So that's why that message is getting pop up. 08:15.240 --> 08:20.000 So instead of printing out message, this player game object need to take damage. 08:20.000 --> 08:22.960 So we need to call the Takedamage function right there. 08:22.960 --> 08:24.120 So let's do that. 08:24.120 --> 08:26.960 So instead of printing out message we're going to remove that. 08:26.960 --> 08:33.200 Firstly we're going to check if firstly we will check if hit info dot game object. 08:33.200 --> 08:35.600 Sorry we're going to use this transform. 08:35.760 --> 08:39.520 Then dot get component get component. 08:39.520 --> 08:42.400 And the component we're looking for is a player ship. 08:42.400 --> 08:46.280 So we're going to type this player and then make first brackets. 08:46.600 --> 08:53.600 And then and we will check if it's not equal to null and make some curly brackets. 08:53.880 --> 08:59.680 So what we basically have done, we do know if hit info is true basically means the ray really collided 08:59.680 --> 09:02.040 with this player game object. 09:02.040 --> 09:04.800 It means this player game object needs to take damage. 09:04.800 --> 09:09.080 But before we take damage, what we're doing, we're checking in this if condition. 09:09.080 --> 09:12.720 We're just going over to hit info dot transform and hit it. 09:13.000 --> 09:18.750 Hit info dot transform basically means the, uh, the, uh, the ray collided with the transform. 09:18.790 --> 09:24.830 Well, let's suppose the ray that this anime game object stood out and that ray just collided with this, 09:24.870 --> 09:26.150 uh, player game object. 09:26.150 --> 09:31.230 So hit info dot transform basically means the ray collided with the game object transform. 09:31.310 --> 09:35.030 So let, uh, the ray just gonna collide with this player game object. 09:35.030 --> 09:37.070 So what we're doing, we're just going over to. 09:37.110 --> 09:42.950 We're just taking this hit info parameter in order to extract the game object, the ray hit width. 09:42.950 --> 09:46.030 So the ray definitely gonna hit with this player game object. 09:46.030 --> 09:51.070 So what we're doing we're just going over to this player game object transform component, as you can 09:51.070 --> 09:52.350 see in the inspector. 09:52.350 --> 09:57.310 And by this transform component we just getting this player skip as you can see. 09:57.310 --> 09:59.430 So we just taking the player skip. 09:59.430 --> 10:03.030 And we're checking if the player is skip is not equal to null. 10:03.070 --> 10:07.670 Basically means the player is skip is really attached to this player game object. 10:07.670 --> 10:13.790 And we definitely know that this player skip we can see in the inspector is attached to this player 10:13.830 --> 10:18.090 game object means the player game object is attached to our player game object. 10:18.130 --> 10:21.370 Firstly, we're checking if the ray really collides with the GameObject. 10:21.370 --> 10:24.330 That GameObject has a script called player. 10:24.330 --> 10:27.410 So the ray definitely gonna collide with this player game object. 10:27.410 --> 10:32.690 So basically we're just going over to this GameObject or this player game object Transform. 10:32.690 --> 10:35.930 And by this transform component we just getting the player script. 10:35.930 --> 10:42.090 And we're checking that if this player script is not equal to null, basically means this player script 10:42.130 --> 10:43.930 attached to this player game object. 10:43.930 --> 10:49.810 As you can see, indeed this player game a player script is attached to our player game object. 10:49.810 --> 10:54.650 So now what we have to do, we need to call the Takedamage function from this player script. 10:54.650 --> 10:58.890 And we do know we made the Takedamage function inside this player script. 10:58.890 --> 11:05.050 So we're going to call the Takedamage function right over here because the script attached to our player 11:05.090 --> 11:12.010 GameObject and the really colliding the with this player GameObject and hit info dot transform basically 11:12.010 --> 11:13.490 means the ray. 11:13.810 --> 11:14.090 The. 11:14.730 --> 11:19.070 Basically it's basically means the transform From the ray collided with. 11:19.110 --> 11:22.630 So the ray is going to collide with our player game object. 11:22.630 --> 11:26.070 So hit info dot transform basically means player transform. 11:26.070 --> 11:29.670 So basically we just moving over to this player game object Transform. 11:29.670 --> 11:32.910 And by this transform we just are checking this player skip. 11:32.910 --> 11:36.510 And we're checking if the player is skip is not equal to null. 11:36.550 --> 11:40.670 Basically means this player script is attached to this player game object. 11:40.670 --> 11:45.270 And we can indeed see the player skip is attached to this player game object. 11:45.270 --> 11:50.790 So in this situation what it's need to do, our player game object need to take that damage. 11:50.790 --> 11:55.790 So what we're going to do we're going to use this hit info parameter one more time to extract info. 11:55.990 --> 12:00.150 And we will go to hit Info Transform and Transform. 12:00.390 --> 12:03.390 And then we're going to get the component that we're looking for. 12:03.390 --> 12:04.430 So get component. 12:04.430 --> 12:07.230 And the component we're looking for is player script. 12:07.230 --> 12:08.630 So we're going to pass player. 12:08.630 --> 12:10.590 And you need to make this first packet. 12:10.590 --> 12:15.630 And now we're going to call the function over here that we made inside our player script. 12:15.630 --> 12:18.310 So the function we made is take damage function. 12:18.310 --> 12:19.970 So let's call the function here. 12:19.970 --> 12:23.210 So we're going to type dot take damage and make first bracket. 12:23.210 --> 12:25.330 And then close that up with semicolon. 12:25.570 --> 12:32.250 So uh so what we need to do now we need to pass the argument right over here. 12:32.250 --> 12:32.610 We do. 12:32.650 --> 12:35.810 No we just pass damage parameter in damage. 12:35.810 --> 12:39.490 And now we can choose the number that we would like to go with. 12:39.490 --> 12:45.090 So let's suppose you just pass right over here instead of one you just pass five. 12:45.210 --> 12:48.810 So the player game object just gonna lose all of his health right away. 12:48.810 --> 12:52.730 Because we have given to this player game object five unit of health. 12:52.730 --> 12:56.410 As you can see in the inspector underneath our player Skip. 12:56.810 --> 13:00.370 But I just want to, uh, subtract uh, every single time. 13:00.370 --> 13:01.250 One unit. 13:01.250 --> 13:05.650 So that's why as a damage parameter uh, over here I'm going to pass one. 13:05.650 --> 13:13.130 So, uh, enemy need to, uh, shoot on our player game object five times in order to destroy our player 13:13.170 --> 13:17.410 game object, or we just want to destroy our player game object. 13:17.410 --> 13:18.450 So it's enemy. 13:18.450 --> 13:19.130 Need to take. 13:19.290 --> 13:26.150 Enemy need to fire on our player GameObject five times, and if you just pass over here five instead 13:26.150 --> 13:34.110 of one, then enemy just gonna enemy GameObject just gonna destroy our player GameObject at one shooting, 13:34.110 --> 13:35.230 but we don't want that. 13:35.230 --> 13:38.790 So that's why as in damage parameter, I just pass one. 13:38.790 --> 13:41.470 So let me explain what we basically have done. 13:41.710 --> 13:45.870 We just going over to a player GameObject transform as you can see. 13:45.870 --> 13:51.990 So hit info dot transform basically means the player transform or the collided with the transform. 13:51.990 --> 13:55.150 So the ray definitely gonna collide our player GameObject. 13:55.150 --> 13:59.510 So hit info transform basically means right over here player transform. 13:59.510 --> 14:02.710 And then we just getting the player script as you can see. 14:02.710 --> 14:06.870 So basically we're just going over to this player GameObject transform. 14:06.870 --> 14:09.430 And then we just moving over to this player scape. 14:09.430 --> 14:13.630 And we do know inside this player scape we just made the Takedamage function. 14:13.630 --> 14:16.750 So we're calling the function over here as you can see. 14:16.750 --> 14:19.430 So firstly we're just moving over to this player script. 14:19.430 --> 14:24.970 And then we just calling this Takedamage damage function and we do not take damage function is really 14:24.970 --> 14:27.570 doing is just subtracting from our max health. 14:27.570 --> 14:31.170 With this amount of damage as a damage parameter, we just pass. 14:31.170 --> 14:38.290 One means our enemy game object need to shoot on our player game object five times in order to destroy 14:38.330 --> 14:43.690 our player game object, or in order to lose all of our health player game object. 14:44.490 --> 14:45.930 Basically, that is the thing. 14:46.090 --> 14:49.850 And now we're going to press down control S in order to save our script. 14:49.850 --> 14:51.770 And now let's move over to unity. 14:52.370 --> 14:58.570 So we will see this enemy game object need to shoot on this player game object five times in order to 14:58.570 --> 15:01.010 destroy our player game object. 15:01.010 --> 15:03.090 So let's have a look on this by now. 15:03.730 --> 15:05.330 So just wait for to compile. 15:05.490 --> 15:11.490 And if we just click on this play button in the top and uh, take a look on this, you will see. 15:11.650 --> 15:17.890 So this enemy game object need to shoot on our player game object five times in order to destroy our 15:17.890 --> 15:19.250 player game object. 15:20.010 --> 15:22.290 So let's have a look on this now. 15:23.010 --> 15:25.670 So enemy just gonna shoot for first time. 15:25.670 --> 15:32.310 As you can see, as soon as shooting and the max health, we can see it just go gradually going down 15:32.310 --> 15:34.230 and the max hell is now zero. 15:34.230 --> 15:40.750 And the health now just get stuck at zero, as you can see, because we are checking if the max health 15:40.750 --> 15:46.510 is already zero, then we're not doing at all, uh, at all, anything like that. 15:46.510 --> 15:47.750 So that is the reason. 15:47.750 --> 15:49.270 I hope you get the idea. 15:49.270 --> 15:51.270 And we need to get out of play mode. 15:51.270 --> 15:56.030 So now what we have to do, we need to destroy this player game object right away. 15:56.030 --> 16:02.070 But before we do, we need to make a script in order to check if the game is active or not. 16:02.110 --> 16:04.350 But we're gonna do in the next lecture. 16:04.350 --> 16:10.830 I hope you get the idea that how you can do it, uh, we basically have done the same thing as we have 16:10.830 --> 16:13.710 done in the inside this anime game object. 16:13.710 --> 16:19.870 We just made the Takedamage function and also the die function in order to damage our player as well 16:19.870 --> 16:25.910 as we have the, uh, we have done the same thing in this player game object as well.