1 00:00:00,000 --> 00:00:03,090 Welcome back, my fellow game developers. 2 00:00:03,090 --> 00:00:05,730 In this video, when you can see right here that we have 3 00:00:05,730 --> 00:00:08,670 these green health pickups. 4 00:00:08,670 --> 00:00:09,840 So when we get hit, 5 00:00:09,840 --> 00:00:13,200 you notice that we are live as 500 over 600. 6 00:00:13,200 --> 00:00:15,000 But once I pick up these health, 7 00:00:15,000 --> 00:00:18,210 you'll notice that I increase my health and 8 00:00:18,210 --> 00:00:21,440 now we're back in business and we can shoot everybody up. 9 00:00:21,435 --> 00:00:23,075 So without further ado, 10 00:00:23,070 --> 00:00:24,500 let's not waste any more time. 11 00:00:24,495 --> 00:00:27,305 I do make a couple of mistakes in this video. 12 00:00:27,300 --> 00:00:29,490 I hope you'll enjoy the lesson from 13 00:00:29,490 --> 00:00:32,270 them and let's not waste any more time again. 14 00:00:32,265 --> 00:00:34,495 And let's get started. 15 00:00:34,495 --> 00:00:38,695 Oh, okay, so let's add the ability for 16 00:00:38,690 --> 00:00:42,660 the player to pick up some health while he is damaged. 17 00:00:42,664 --> 00:00:44,874 So the first thing I want to do is I 18 00:00:44,870 --> 00:00:47,660 want to create the prefab out of the spike trap. 19 00:00:47,660 --> 00:00:51,920 So prefab and what should be having here. 20 00:00:51,920 --> 00:00:53,600 Let's right-click in here and 21 00:00:53,600 --> 00:00:56,660 create a folder for the level objects. 22 00:00:56,660 --> 00:01:01,570 So level objects. 23 00:01:01,565 --> 00:01:05,105 And let's go ahead and add the spike trap and here, 24 00:01:05,105 --> 00:01:06,665 and let's just keep it in our world. 25 00:01:06,665 --> 00:01:08,575 Now, the next thing we want to do is to 26 00:01:08,570 --> 00:01:11,350 go into the sprites. 27 00:01:11,345 --> 00:01:13,375 Where are the sprites? 28 00:01:13,370 --> 00:01:15,970 And let's say that in here we have 29 00:01:15,965 --> 00:01:18,925 the health pickup or you know what, 30 00:01:18,920 --> 00:01:23,030 let's just call them the PEC Ops. Hit Enter. 31 00:01:23,030 --> 00:01:26,330 And in here I'm going to go into the resources and drag 32 00:01:26,330 --> 00:01:29,990 the entire PNG or image or whatever you wanna call it. 33 00:01:29,990 --> 00:01:32,560 And I wanted to do this outside 34 00:01:32,555 --> 00:01:35,335 and do it before we start the video. 35 00:01:35,330 --> 00:01:37,850 But I thought that maybe some of you might have been 36 00:01:37,850 --> 00:01:40,780 angry that I created all the animations and stuff. 37 00:01:40,775 --> 00:01:43,775 So I thought that let's create them together. 38 00:01:43,775 --> 00:01:45,355 If you want, we can go ahead 39 00:01:45,350 --> 00:01:47,080 and see who can do it faster. 40 00:01:47,075 --> 00:01:50,155 So 64 by 64 or less slides that, okay, 41 00:01:50,150 --> 00:01:51,470 obviously it should be 42 00:01:51,470 --> 00:01:57,770 32 by 32 slice that applied changes. There we go. 43 00:01:57,770 --> 00:01:59,870 Now I'm going to get one of those, 44 00:01:59,870 --> 00:02:02,110 add them to the world in here. 45 00:02:02,105 --> 00:02:03,265 It's extremely small. 46 00:02:03,260 --> 00:02:05,590 Let's set it on the layer, layer. 47 00:02:05,585 --> 00:02:07,165 It's still extremely small. 48 00:02:07,160 --> 00:02:09,830 Let's make it 32 and the pixels per 49 00:02:09,830 --> 00:02:14,680 unit apply the changes so it's a bit still a bit small. 50 00:02:14,675 --> 00:02:17,465 Let's make it maybe 16. 51 00:02:17,465 --> 00:02:19,465 Apply the changes. There we go. 52 00:02:19,460 --> 00:02:20,630 I think this is good. 53 00:02:20,630 --> 00:02:23,510 And by the way, this is one of the ugliest health pickups 54 00:02:23,510 --> 00:02:26,480 that I've ever that I've ever seen. 55 00:02:26,480 --> 00:02:28,240 So if you want now, no, 56 00:02:28,235 --> 00:02:29,785 I didn't want to say that because 57 00:02:29,780 --> 00:02:31,460 maybe the person that worked on 58 00:02:31,460 --> 00:02:34,130 them maybe had a tough time 59 00:02:34,130 --> 00:02:35,690 creating the shadows and so on. 60 00:02:35,690 --> 00:02:36,950 So I'm sorry for saying that, 61 00:02:36,950 --> 00:02:38,960 but honestly, they're not that good. 62 00:02:38,960 --> 00:02:42,020 So I do recommend that you go find your own sprites. 63 00:02:42,020 --> 00:02:44,060 All I want to do is make sure that we 64 00:02:44,060 --> 00:02:46,100 have the game mechanics and place. 65 00:02:46,100 --> 00:02:48,370 It doesn't have to be extremely pretty. 66 00:02:48,365 --> 00:02:51,355 Anyways, we add a box collider obviously. 67 00:02:51,350 --> 00:02:52,900 Let's see how big that is. 68 00:02:52,895 --> 00:02:54,925 Yep, I think that is big enough. 69 00:02:54,920 --> 00:02:57,530 We'll make sure it's a trigger will save that. 70 00:02:57,530 --> 00:03:01,030 We'll go into the scripts in here 71 00:03:01,025 --> 00:03:04,675 and let's right-click and create a C-sharp script 72 00:03:04,670 --> 00:03:12,290 for the health or the health pickup. Hit enter. 73 00:03:12,290 --> 00:03:16,250 And we'll create a folder which will be the pickups. 74 00:03:16,250 --> 00:03:17,860 So any day now, 75 00:03:17,855 --> 00:03:21,605 pickups and add the health pickup and do the pickups. 76 00:03:21,605 --> 00:03:23,545 And then we'll add the health pickup 77 00:03:23,540 --> 00:03:25,390 into the health pickup. 78 00:03:25,385 --> 00:03:26,875 How cool is that? 79 00:03:26,870 --> 00:03:29,750 So health pickup gets a new component, 80 00:03:29,749 --> 00:03:32,679 which is the health pickup script. 81 00:03:32,675 --> 00:03:34,285 There we go, open it up in 82 00:03:34,280 --> 00:03:36,140 Visual Studio and let's get started. 83 00:03:36,140 --> 00:03:38,480 So what do we need in here? 84 00:03:38,480 --> 00:03:40,190 First of all, obviously we need to 85 00:03:40,190 --> 00:03:42,380 know the amount that this will heal. 86 00:03:42,380 --> 00:03:45,500 So serialized field, we'll make it an 87 00:03:45,500 --> 00:03:49,700 integer and we'll call this the heel amount endless. 88 00:03:49,700 --> 00:03:52,370 Just set it to be, I don't know, like maybe ten. 89 00:03:52,370 --> 00:03:55,090 I think ten is a good enough number. 90 00:03:55,085 --> 00:03:58,015 I'm going to remove the start and update for now. 91 00:03:58,010 --> 00:04:01,160 And I'm going to go ahead and create an on 92 00:04:01,160 --> 00:04:03,590 Trigger Enter to the 93 00:04:03,590 --> 00:04:07,330 obviously what are we looking for? Compare tag. 94 00:04:07,325 --> 00:04:09,175 I mean, sorry, we need 95 00:04:09,170 --> 00:04:11,000 to first of all get the collision and 96 00:04:11,000 --> 00:04:14,690 then we compare the tag and that tag as the player. 97 00:04:14,690 --> 00:04:16,780 So you've already seen all of this, 98 00:04:16,775 --> 00:04:18,955 I think about 1000 times, but anyways, 99 00:04:18,950 --> 00:04:21,500 this is what we should be going through. 100 00:04:21,500 --> 00:04:22,910 But before I do that, 101 00:04:22,910 --> 00:04:25,690 let me just create the animation for the health pickup. 102 00:04:25,685 --> 00:04:30,155 So Animation, create animation. 103 00:04:30,155 --> 00:04:32,395 Let's create a folder in here which is going 104 00:04:32,390 --> 00:04:35,390 to be the pickups. 105 00:04:35,390 --> 00:04:37,520 Maybe we do add a bit of more pickups. 106 00:04:37,520 --> 00:04:38,690 And in here we'll create 107 00:04:38,690 --> 00:04:43,370 the health pickup just 108 00:04:43,370 --> 00:04:45,020 to make sure that everything is really 109 00:04:45,020 --> 00:04:47,260 clean and easy to go through. 110 00:04:47,255 --> 00:04:54,445 So now we get the health up, down, up, down. 111 00:04:54,440 --> 00:04:59,450 That go to the sprite switches on. 112 00:04:59,450 --> 00:05:02,980 And where is it? 113 00:05:02,975 --> 00:05:05,735 Backup, health pickup. 114 00:05:05,735 --> 00:05:06,715 There we go. 115 00:05:06,710 --> 00:05:08,500 Let's add all of these images 116 00:05:08,495 --> 00:05:11,105 and we'll keep it as the default layer that's run. 117 00:05:11,105 --> 00:05:14,845 Okay, that's an extremely fast, maybe like that. 118 00:05:14,840 --> 00:05:17,450 Nope, that is boring. 119 00:05:17,450 --> 00:05:19,450 Like that. 120 00:05:19,445 --> 00:05:23,845 Okay. I think that is good enough maybe. 121 00:05:23,840 --> 00:05:26,060 Yeah, sure. Why not? So let's just keep 122 00:05:26,060 --> 00:05:29,040 it at that. I think. 123 00:05:29,044 --> 00:05:30,534 Yeah, Sure. 124 00:05:30,530 --> 00:05:32,510 As long as we can see what's happening 125 00:05:32,510 --> 00:05:34,640 and it's just moving a little bit. 126 00:05:34,640 --> 00:05:36,830 Maybe make it a bit slower. 127 00:05:36,830 --> 00:05:39,040 Nope, that's 2 first. 128 00:05:39,035 --> 00:05:40,045 I don't know. 129 00:05:40,040 --> 00:05:41,360 This will really depend on you. 130 00:05:41,360 --> 00:05:43,070 How do you want your pickup to look? 131 00:05:43,070 --> 00:05:45,500 Obviously, some of you have battery sprites, 132 00:05:45,500 --> 00:05:47,000 have better understanding of what 133 00:05:47,000 --> 00:05:48,860 makes an animation pretty. 134 00:05:48,860 --> 00:05:50,990 So I'll keep that to you as long as 135 00:05:50,990 --> 00:05:53,350 we have the health pickup working properly. 136 00:05:53,345 --> 00:05:54,745 Now let's go back in here. 137 00:05:54,740 --> 00:05:56,300 And what do we want to do in here 138 00:05:56,300 --> 00:05:58,240 after the player collides will 139 00:05:58,235 --> 00:06:01,795 obviously we want to increase the health of the player, 140 00:06:01,790 --> 00:06:03,710 but there is something 141 00:06:03,710 --> 00:06:05,510 that is not quite right and that is, 142 00:06:05,510 --> 00:06:07,550 we don't have any way of doing that. 143 00:06:07,550 --> 00:06:09,430 So I'm going to issue you 144 00:06:09,425 --> 00:06:12,545 a challenge to create a method that adds health. 145 00:06:12,545 --> 00:06:13,865 So first of all, 146 00:06:13,865 --> 00:06:16,075 and the player health handler create 147 00:06:16,070 --> 00:06:19,100 a method that adds health to the player. 148 00:06:19,100 --> 00:06:22,570 It should take a parameter which is the heel amount. 149 00:06:22,565 --> 00:06:25,085 You'll need to make sure that it never goes 150 00:06:25,085 --> 00:06:28,105 over the maximum of health that we have. 151 00:06:28,100 --> 00:06:30,140 So our maximum is 100. 152 00:06:30,140 --> 00:06:32,960 We don't want to have 120, for example. 153 00:06:32,960 --> 00:06:35,030 And finally, and most importantly, 154 00:06:35,030 --> 00:06:38,360 you need to make sure to also update the UI canvas. 155 00:06:38,360 --> 00:06:40,060 So with that information, 156 00:06:40,055 --> 00:06:45,115 pause the video right now and go do reach challenge. 157 00:06:45,110 --> 00:06:47,060 Gay. Welcome back. 158 00:06:47,060 --> 00:06:48,760 How did you get on that? 159 00:06:48,755 --> 00:06:50,395 I hope it wasn't too hard 160 00:06:50,390 --> 00:06:52,310 and I hope you gave it your all. 161 00:06:52,310 --> 00:06:56,330 So in here where we damage the player right under, 162 00:06:56,330 --> 00:06:59,130 we are going to create a public void. 163 00:06:59,130 --> 00:07:03,440 And it's going to be add HB two player. 164 00:07:03,440 --> 00:07:07,040 And it's going to take in an integer parameter, 165 00:07:07,040 --> 00:07:10,990 which is the heel amount. 166 00:07:10,985 --> 00:07:13,555 And what shall we be doing in here? 167 00:07:13,550 --> 00:07:16,600 Well, we are going to be accessing the current health 168 00:07:16,595 --> 00:07:18,625 and we are going to be increasing 169 00:07:18,620 --> 00:07:20,780 it by the health amount. 170 00:07:20,780 --> 00:07:22,840 Now for the tricky part, 171 00:07:22,835 --> 00:07:25,535 if we have the current health 172 00:07:25,535 --> 00:07:28,025 greater than the max health, 173 00:07:28,025 --> 00:07:29,525 what should we be doing? 174 00:07:29,525 --> 00:07:30,655 Well, we should be setting 175 00:07:30,650 --> 00:07:34,180 the current health to be equal to the max health. 176 00:07:34,175 --> 00:07:36,355 So this will ensure that the current health 177 00:07:36,350 --> 00:07:39,050 never goes over the max health. 178 00:07:39,050 --> 00:07:40,480 And finally, we need to 179 00:07:40,475 --> 00:07:44,905 update player Health Plan, Update Player health. 180 00:07:44,900 --> 00:07:47,380 Yep, Update Player health. You know what? 181 00:07:47,375 --> 00:07:49,535 Double-click in here, Control RR, 182 00:07:49,535 --> 00:07:52,055 Update Player health you are. 183 00:07:52,055 --> 00:07:54,965 And the problem is 184 00:07:54,965 --> 00:07:59,095 that there is something, one unresolved conflict. 185 00:07:59,090 --> 00:08:00,890 What is the problem? Oh, okay. 186 00:08:00,890 --> 00:08:04,460 So in here, it doesn't know what it should be using. 187 00:08:04,460 --> 00:08:05,560 And there we go. 188 00:08:05,555 --> 00:08:08,545 So now we update the player health you are. 189 00:08:08,540 --> 00:08:11,680 And the last step is obviously to inhere, 190 00:08:11,675 --> 00:08:17,645 we are going to go to the collision, the Get component, 191 00:08:17,645 --> 00:08:19,555 because we already know this is the player, 192 00:08:19,550 --> 00:08:27,230 so we won't face any errors that what was called at, 193 00:08:27,230 --> 00:08:28,970 at HP to player, 194 00:08:28,970 --> 00:08:30,710 at HP to player. 195 00:08:30,710 --> 00:08:34,760 And we sent him the heel amount of this object. 196 00:08:34,760 --> 00:08:37,060 And finally, and of course we need to 197 00:08:37,055 --> 00:08:40,675 destroy the game object. 198 00:08:40,670 --> 00:08:43,250 There we go. I believe this is all that we 199 00:08:43,250 --> 00:08:45,530 need to do and this should be working. 200 00:08:45,530 --> 00:08:49,540 So back in our game, Let's run this. 201 00:08:49,535 --> 00:08:51,595 And let's see if that worked. 202 00:08:51,590 --> 00:08:53,420 So we are going to stand on the spikes, 203 00:08:53,420 --> 00:08:56,630 get hit once, Come on, Get him twice. 204 00:08:56,630 --> 00:08:57,580 There we go. 205 00:08:57,575 --> 00:08:59,965 Get hit a third time. Okay. 206 00:08:59,960 --> 00:09:02,090 So now our health is 300. 207 00:09:02,089 --> 00:09:03,829 So now when we pick up this, 208 00:09:03,830 --> 00:09:05,960 we should have 310. 209 00:09:05,955 --> 00:09:08,175 We have 320. 210 00:09:08,170 --> 00:09:10,140 So why do you think that happened? 211 00:09:10,135 --> 00:09:12,475 Let's see what the problem is here. 212 00:09:12,475 --> 00:09:17,625 So the health pickup has done, it hasn't animation. 213 00:09:17,620 --> 00:09:19,720 It has a box collider, 214 00:09:19,720 --> 00:09:23,710 but the problem, Oh, welcome back. 215 00:09:23,710 --> 00:09:27,130 So I believe it took me just a fraction of a 216 00:09:27,130 --> 00:09:28,540 second to know what happened 217 00:09:28,540 --> 00:09:30,610 because of the magic of editing. 218 00:09:30,610 --> 00:09:32,740 But I went through a couple of things. 219 00:09:32,740 --> 00:09:36,660 Just understand if my theory was correct and it was. 220 00:09:36,655 --> 00:09:39,085 So what I was thinking is that 221 00:09:39,085 --> 00:09:41,455 we have two colliders in here. 222 00:09:41,455 --> 00:09:44,035 We have the capsule collider of the player, 223 00:09:44,035 --> 00:09:46,845 and we have the Box Glider of the Player. 224 00:09:46,840 --> 00:09:48,560 One of them is 2. 225 00:09:48,555 --> 00:09:51,125 Make sure that we do not go beyond walls. 226 00:09:51,125 --> 00:09:54,055 So we made one that is small so we can have 227 00:09:54,050 --> 00:09:57,530 the illusion that this game is more than just a two. 228 00:09:57,530 --> 00:09:59,720 These are the wall doesn't actually make 229 00:09:59,720 --> 00:10:02,420 us unable to walk through it a little bit. 230 00:10:02,420 --> 00:10:05,120 So if you know what I mean, I'm in here. 231 00:10:05,120 --> 00:10:07,610 And then the second one is actually to be 232 00:10:07,610 --> 00:10:09,890 able to get shot from the hat. 233 00:10:09,890 --> 00:10:12,280 So the problem, What's happening? 234 00:10:12,275 --> 00:10:13,745 I'm trying to show you, 235 00:10:13,745 --> 00:10:16,045 I'm going to get hit by these spikes. 236 00:10:16,040 --> 00:10:19,580 And now if I walk with these two colliders, 237 00:10:19,580 --> 00:10:23,140 you'll notice that when I get to choose one of them, 238 00:10:23,135 --> 00:10:24,985 you see that I get 20 because I'm 239 00:10:24,980 --> 00:10:26,930 picking it up with both gliders. 240 00:10:26,930 --> 00:10:29,480 If I just pick it up with the collider above, 241 00:10:29,480 --> 00:10:34,130 look at the 520, you'll see that it's just 530. 242 00:10:34,130 --> 00:10:37,550 If I pick it up with my head only, I get 540. 243 00:10:37,550 --> 00:10:38,840 So 10, which is good. 244 00:10:38,840 --> 00:10:42,410 And if I pick it up on from the side, there you go. 245 00:10:42,410 --> 00:10:44,060 You can see that it added 20. 246 00:10:44,060 --> 00:10:46,510 So this is the problem that we need to fix. 247 00:10:46,505 --> 00:10:49,435 Now, I want you to take a moment and 248 00:10:49,430 --> 00:10:52,570 think of a solution to this problem. 249 00:10:52,565 --> 00:10:54,215 So I'm just going to give you, 250 00:10:54,215 --> 00:10:56,335 this is not a challenge, not an efficient challenge. 251 00:10:56,330 --> 00:10:59,280 I'm just going to give you a bit of time. 252 00:10:59,760 --> 00:11:02,260 Okay, time's up. So let's 253 00:11:02,260 --> 00:11:04,480 see what we are going to do in here. 254 00:11:04,480 --> 00:11:07,530 So the whole thing that we need to make sure of is that 255 00:11:07,525 --> 00:11:11,145 this health pickup has been picked up at least once. 256 00:11:11,140 --> 00:11:13,500 So what we'll do is we'll create 257 00:11:13,495 --> 00:11:20,155 a private bool and this is going to be called Pick it up. 258 00:11:20,155 --> 00:11:22,455 So it has been picked up. 259 00:11:22,450 --> 00:11:24,910 And in here we're going to say that if it's 260 00:11:24,910 --> 00:11:27,930 the player and it has not been picked up, 261 00:11:27,925 --> 00:11:29,845 so we add the exclamation mark, 262 00:11:29,845 --> 00:11:31,455 then we are going to pick up, 263 00:11:31,450 --> 00:11:35,020 but we'll also set this pickup to be true. 264 00:11:35,020 --> 00:11:37,770 So once we pick it up, once, 265 00:11:37,765 --> 00:11:40,875 That's it, We can no longer pick it up another time. 266 00:11:40,875 --> 00:11:42,235 So let's save that. 267 00:11:42,230 --> 00:11:45,080 Let's go back into our game and let's test this out. 268 00:11:45,080 --> 00:11:46,880 So we run the game, 269 00:11:46,880 --> 00:11:48,980 we get hit by the spikes. 270 00:11:48,980 --> 00:11:51,760 And then when we walk on the sides, 271 00:11:51,755 --> 00:11:53,315 there we go, we get 10. 272 00:11:53,315 --> 00:11:55,525 So no matter how much we try right now, 273 00:11:55,520 --> 00:11:58,610 we should never get this increasing by 20. 274 00:11:58,610 --> 00:12:01,540 So now I walk through this that you go on the sides, 275 00:12:01,535 --> 00:12:06,085 we always get 10 and never get an extra 20 or so. 276 00:12:06,080 --> 00:12:08,530 I hope you enjoy it. I hope you'd like this. 277 00:12:08,525 --> 00:12:12,175 And I really wasn't sure what the problem was solved. 278 00:12:12,170 --> 00:12:14,180 Took me maybe about two to three minutes, 279 00:12:14,180 --> 00:12:15,920 but I remember when I first 280 00:12:15,920 --> 00:12:18,340 started this took me maybe back. 281 00:12:18,335 --> 00:12:21,065 Today's to figure out what the hell was 282 00:12:21,065 --> 00:12:24,235 wrong with this games or why wasn't big begin picked up? 283 00:12:24,230 --> 00:12:25,720 This was a long time ago. 284 00:12:25,715 --> 00:12:27,385 Now, because of my experience, 285 00:12:27,380 --> 00:12:28,820 I understand things a bit 286 00:12:28,820 --> 00:12:31,280 quicker and this is what I want you to know that 287 00:12:31,280 --> 00:12:36,380 sometimes even though I know I have so much experience, 288 00:12:36,380 --> 00:12:37,540 I'm teaching you the scores. 289 00:12:37,535 --> 00:12:40,045 I also make a lot of mistakes and 290 00:12:40,040 --> 00:12:43,120 things happened that I have no clue why, 291 00:12:43,115 --> 00:12:45,505 even though this course actually I've 292 00:12:45,500 --> 00:12:48,580 created this game beforehand and went through everything. 293 00:12:48,575 --> 00:12:50,815 But I encountered this problem, 294 00:12:50,810 --> 00:12:51,980 so I hope you enjoy it. 295 00:12:51,980 --> 00:12:54,220 I hope you like my transparency that I 296 00:12:54,215 --> 00:12:57,065 always make sure to show you the mistakes I made, 297 00:12:57,065 --> 00:12:59,395 even though some people don't like it, 298 00:12:59,390 --> 00:13:02,710 they say that, how can an unstructured make mistakes? 299 00:13:02,705 --> 00:13:05,345 Oh no, everybody tries to be perfect. 300 00:13:05,345 --> 00:13:06,635 I know nobody is. 301 00:13:06,635 --> 00:13:07,415 Trust me. 302 00:13:07,415 --> 00:13:10,895 Everybody uses Google to figure out what the problem was. 303 00:13:10,895 --> 00:13:12,805 And this case I didn't because I've 304 00:13:12,800 --> 00:13:14,900 already encountered it and fixed it beforehand, 305 00:13:14,900 --> 00:13:16,240 so I hope you enjoy it. 306 00:13:16,235 --> 00:13:17,915 Make sure to stage your files 307 00:13:17,915 --> 00:13:21,005 and I'll see you in the next video.