1 00:00:03,100 --> 00:00:07,960 This lecture was starting the process of shooting, and I'm going to be shooting a bullets that look 2 00:00:07,960 --> 00:00:12,010 like myself, because that's the sprite that I had in my library and I didn't have a bullet. 3 00:00:12,010 --> 00:00:14,560 And I think it's going to be pretty cool and funny for now. 4 00:00:14,560 --> 00:00:18,020 We're just instantiating the bullet in this lecture, so let's get started. 5 00:00:18,040 --> 00:00:22,200 Originally, I wasn't planning on putting shooting into this project, but I thought, you know, it 6 00:00:22,240 --> 00:00:23,620 would be cool shooting. 7 00:00:23,620 --> 00:00:25,840 So hey presto, we're going to do some shooting. 8 00:00:25,840 --> 00:00:27,510 Hopefully that's okay with you. 9 00:00:27,520 --> 00:00:29,560 What I'll do, first of all, is have a look at the player. 10 00:00:29,560 --> 00:00:32,009 I'm going to go into the player prefab for this design. 11 00:00:32,049 --> 00:00:33,700 I'm looking in the prefab. 12 00:00:33,700 --> 00:00:39,700 What we need to say is here's a spot where the bullet will be spawning or instantiated and where it 13 00:00:39,700 --> 00:00:40,840 will be shooting from. 14 00:00:40,840 --> 00:00:44,800 You could do it just in the middle of the player, but sometimes you want to have a gun, so we'll do 15 00:00:44,800 --> 00:00:47,560 it the the quote unquote proper way of giving it a gun. 16 00:00:47,560 --> 00:00:52,750 So when we click on the player, right click Create Empty, that will create an empty game object as 17 00:00:52,750 --> 00:00:55,390 a child should be zeroed, which is good. 18 00:00:55,390 --> 00:00:58,660 And I'll rename this from game object to be Gun. 19 00:00:58,660 --> 00:01:03,550 You could also call it bullet spawn point, but you know, that's kind of what a gun is, isn't it? 20 00:01:03,550 --> 00:01:04,599 A bullet spawn point? 21 00:01:04,599 --> 00:01:09,520 So I'll click on the gun and I'll just move it a little bit to the right and a little bit down in the 22 00:01:09,520 --> 00:01:11,530 spot where I think the bullet should be flowing out. 23 00:01:11,530 --> 00:01:12,640 The character doesn't have a gun. 24 00:01:12,640 --> 00:01:14,680 It's not that sort of visual I'm looking for. 25 00:01:14,680 --> 00:01:18,130 I just want it to be starting a little bit away from the player. 26 00:01:18,130 --> 00:01:19,240 So I think that's fine. 27 00:01:19,240 --> 00:01:24,370 Now back out of the prefab, click on the little arrow next to the prefab back into our main area. 28 00:01:24,400 --> 00:01:25,210 I'm going to create a bullet. 29 00:01:25,210 --> 00:01:30,760 And for this we need a prefab so that we can instantiate it time after time when you push the trigger. 30 00:01:30,760 --> 00:01:35,590 So I didn't I don't actually have a bullet in here, so I'm going to do something a little bit dumb 31 00:01:35,590 --> 00:01:36,370 and a little bit silly. 32 00:01:36,370 --> 00:01:39,160 I'm going to use one of the player's sprites as the bullet. 33 00:01:39,160 --> 00:01:41,800 So you kind of shooting little projections of yourself. 34 00:01:41,800 --> 00:01:44,320 So let's have a look and see which one we want to use. 35 00:01:44,320 --> 00:01:49,150 You could shoot little projection and it could animate as well if you wanted to be super clever about 36 00:01:49,150 --> 00:01:49,270 it. 37 00:01:49,270 --> 00:01:53,830 There's a little extra challenge for you, but I'm going to find let's see, I think this one is fine. 38 00:01:53,830 --> 00:01:56,950 Number 22, just a little character running across the screen. 39 00:01:57,080 --> 00:01:58,390 This one's a good number, 19. 40 00:01:58,390 --> 00:02:05,170 So I'm going to grab number 19 and a drag, just that single number 19 into the hierarchy. 41 00:02:05,200 --> 00:02:07,630 I'll rename it to B Bullet. 42 00:02:07,630 --> 00:02:10,630 We need to give it a particular sorting layer so we can see it. 43 00:02:10,630 --> 00:02:12,310 I'll put it on the same layer as the player. 44 00:02:12,310 --> 00:02:13,120 That makes sense. 45 00:02:13,120 --> 00:02:15,610 You can see the player's bullet at the same layer is the player. 46 00:02:15,610 --> 00:02:18,490 We need to give it some sort of collision as well. 47 00:02:18,580 --> 00:02:23,140 So I'll add another layer and I'll call this one bullets. 48 00:02:23,740 --> 00:02:29,200 Click back on bullet, change this to be on the bullets layer and then jump over into project settings. 49 00:02:29,200 --> 00:02:31,750 So edit project settings just so we don't forget later on. 50 00:02:31,750 --> 00:02:32,800 So I don't forget later on. 51 00:02:32,800 --> 00:02:33,640 It's more the case. 52 00:02:34,210 --> 00:02:36,460 Why we want bullets to collide with ground. 53 00:02:36,460 --> 00:02:37,240 Yeah, probably. 54 00:02:37,240 --> 00:02:39,070 I want them to bounce off the walls and stuff. 55 00:02:39,070 --> 00:02:39,640 That's cool. 56 00:02:39,640 --> 00:02:40,510 And off the ladders. 57 00:02:40,900 --> 00:02:41,950 Off the ladders player. 58 00:02:41,950 --> 00:02:43,900 No background. 59 00:02:43,900 --> 00:02:46,660 No bouncing enemies. 60 00:02:46,660 --> 00:02:47,200 Yes. 61 00:02:47,200 --> 00:02:48,190 Hazards. 62 00:02:48,550 --> 00:02:49,420 Yes, might as well. 63 00:02:49,420 --> 00:02:50,230 And bullets. 64 00:02:50,920 --> 00:02:51,700 Yes, you can. 65 00:02:51,700 --> 00:02:52,930 Bullets can collide with bullets. 66 00:02:52,930 --> 00:02:53,920 I think that's fine. 67 00:02:54,010 --> 00:02:54,550 Okay. 68 00:02:54,550 --> 00:02:55,360 X out of that. 69 00:02:55,360 --> 00:02:58,840 So we've got the first step now we need to turn our bullet into a prefab. 70 00:02:58,840 --> 00:03:00,460 So click over in the prefab folder. 71 00:03:00,460 --> 00:03:03,160 We've just got the player I'm going to drag bullet down into there. 72 00:03:03,160 --> 00:03:05,140 Now we have a bullet prefab. 73 00:03:05,140 --> 00:03:06,250 It looks like the player. 74 00:03:06,250 --> 00:03:12,580 So what I'm going to do on my sprite renderer for the bullet in the in the prefab down here in the folder, 75 00:03:12,610 --> 00:03:16,510 I'm going to change the color to be some sort of red kind of color. 76 00:03:16,960 --> 00:03:17,800 And here we go. 77 00:03:17,830 --> 00:03:23,980 So you're shooting out little red bullets of yourself, so it's nice and clear what's going on. 78 00:03:23,980 --> 00:03:24,400 Okay. 79 00:03:24,400 --> 00:03:25,840 And I'll probably need to change the scale. 80 00:03:25,840 --> 00:03:30,100 We'll come back to that later on after we've actually started shooting it and flying it across the screen. 81 00:03:30,100 --> 00:03:30,880 So I've got some bullets. 82 00:03:30,880 --> 00:03:31,930 We've got the player next. 83 00:03:31,930 --> 00:03:35,470 We need to have a look at our input system to see how we're going to trigger shooting. 84 00:03:35,470 --> 00:03:41,710 If I double click on my input system, the little roadmap thing there and I've got in here already in 85 00:03:41,710 --> 00:03:46,630 action, which is fire and you can see the controls for us on our keyboard. 86 00:03:46,630 --> 00:03:49,450 I've got left Mouse, so I'm just going to use left mouse for now. 87 00:03:49,480 --> 00:03:50,560 Might do something later on. 88 00:03:50,560 --> 00:03:52,540 I might change it to a certain key on the keyboard. 89 00:03:52,540 --> 00:03:53,170 That's fine. 90 00:03:53,170 --> 00:03:53,740 For now. 91 00:03:53,740 --> 00:03:56,830 We're sitting in our keyboards working on this project, so that's cool. 92 00:03:56,830 --> 00:04:00,340 We use the mouse and we need to jump over into our player movement. 93 00:04:00,340 --> 00:04:04,660 So there's a few ways we could do this, but the way I'm going to do it is the simplest conceptually 94 00:04:04,660 --> 00:04:07,060 where we're just going to say on fire. 95 00:04:07,060 --> 00:04:09,430 Then we instantiate a bullet. 96 00:04:09,640 --> 00:04:15,820 So here is a challenge for you to spawn our bullets, specifically use instantiate to spawn our bullet 97 00:04:15,820 --> 00:04:22,780 at our player's gun when the player clicks the trigger, or in other words, we are calling on fire. 98 00:04:22,780 --> 00:04:24,160 So there's your mission. 99 00:04:24,160 --> 00:04:27,550 If you choose to accept it, I'll see you back here when you've given it a shot. 100 00:04:29,990 --> 00:04:30,500 Ryan. 101 00:04:30,500 --> 00:04:34,000 I just realized I made a really accidentally terrible pun just there. 102 00:04:34,010 --> 00:04:34,650 Give it a shot. 103 00:04:34,670 --> 00:04:39,380 I didn't mean to say that, but I guess subliminally, my dad brain just never shuts up, does it? 104 00:04:39,380 --> 00:04:39,890 So. 105 00:04:40,010 --> 00:04:40,880 Ha ha. 106 00:04:40,910 --> 00:04:41,720 Now, let's see. 107 00:04:41,750 --> 00:04:42,650 What have we got in here? 108 00:04:42,680 --> 00:04:43,340 Update on. 109 00:04:43,340 --> 00:04:44,200 Move on, jump. 110 00:04:44,210 --> 00:04:46,190 I'll put this at the top so it's nice and clear. 111 00:04:46,190 --> 00:04:48,410 So it's going to be on fire. 112 00:04:48,410 --> 00:04:54,770 And in parentheses we need to grab ourselves an input value as we've done before. 113 00:04:54,770 --> 00:04:57,770 We've got clues just down below ourselves here input value. 114 00:04:57,770 --> 00:05:02,420 And this will be value and be very similar to the jump because it's just tapping a button, right. 115 00:05:02,420 --> 00:05:03,860 So very, very similar to that. 116 00:05:03,860 --> 00:05:06,080 Get our curly braces as we've done before. 117 00:05:06,080 --> 00:05:10,010 We just need to have our if you're not alive, then you can't do these things. 118 00:05:10,010 --> 00:05:10,730 We'll pop that in there. 119 00:05:10,730 --> 00:05:12,530 So if not alive, then return. 120 00:05:12,740 --> 00:05:15,620 If you are alive, then we want to instantiate a bullet. 121 00:05:15,620 --> 00:05:16,430 So instantiate. 122 00:05:16,430 --> 00:05:17,510 What are we instantiating? 123 00:05:17,510 --> 00:05:19,070 Well, it's going to be bullet. 124 00:05:19,070 --> 00:05:21,590 We need to go and create a reference to that. 125 00:05:21,590 --> 00:05:25,280 So up at the very top we will serialize a field. 126 00:05:25,280 --> 00:05:27,050 This will be of type. 127 00:05:27,050 --> 00:05:27,710 What is this? 128 00:05:27,710 --> 00:05:30,230 I think this is going to be a game object that makes sense. 129 00:05:30,230 --> 00:05:31,130 Game object. 130 00:05:31,130 --> 00:05:33,620 And we'll call this just straight up bullet. 131 00:05:33,620 --> 00:05:35,810 So that's how we need to instantiate something. 132 00:05:35,810 --> 00:05:39,470 We need to have a reference to it, and we're going to drag that into the inspector so we know exactly 133 00:05:39,470 --> 00:05:40,580 what that's going to be. 134 00:05:40,610 --> 00:05:45,230 I'm going to pair up the bullet with the player and then also while I'm here, I'll get to this in a 135 00:05:45,230 --> 00:05:45,530 moment. 136 00:05:45,530 --> 00:05:49,790 Now instantiate method, but we also need a place to instantiate it from. 137 00:05:49,790 --> 00:05:51,440 I know that's coming in a moment. 138 00:05:51,440 --> 00:05:54,680 So I'm going to serialize field a transform. 139 00:05:54,740 --> 00:05:55,760 Call it bullet point. 140 00:05:55,760 --> 00:05:56,090 You know what? 141 00:05:56,090 --> 00:05:56,990 Let's just call it gun. 142 00:05:57,020 --> 00:05:58,460 Only called a bullet spawn. 143 00:05:58,460 --> 00:05:59,240 But what is it? 144 00:05:59,240 --> 00:06:00,380 It's the gun. 145 00:06:00,380 --> 00:06:01,340 Crazy. 146 00:06:01,340 --> 00:06:02,330 So now instantiate. 147 00:06:02,330 --> 00:06:03,860 We need to know what we're spawning. 148 00:06:03,860 --> 00:06:05,210 Where are we spawning it? 149 00:06:05,210 --> 00:06:07,280 That'll be gun dot position. 150 00:06:07,280 --> 00:06:08,600 And when do we want it? 151 00:06:08,600 --> 00:06:09,140 Now. 152 00:06:09,770 --> 00:06:10,670 That's the wrong song. 153 00:06:10,670 --> 00:06:11,480 So what? 154 00:06:11,480 --> 00:06:13,460 Where and rotation. 155 00:06:13,460 --> 00:06:16,670 So rotation would simply say transform rotation. 156 00:06:16,670 --> 00:06:20,270 So whatever rotation the bullet has when it comes to life, that's a rotation. 157 00:06:20,270 --> 00:06:22,160 We're going to use parentheses. 158 00:06:22,160 --> 00:06:24,410 Our on fire squiggle should go away. 159 00:06:24,410 --> 00:06:26,660 If I've done it right, it's not going away yet. 160 00:06:26,930 --> 00:06:29,210 That's because Rick has forgotten the return type. 161 00:06:29,210 --> 00:06:30,140 Sorry about that. 162 00:06:30,140 --> 00:06:32,090 Forgotten that a few times in this section. 163 00:06:32,090 --> 00:06:34,270 Void on fire is what we're looking for. 164 00:06:34,280 --> 00:06:36,440 Save back over into unity. 165 00:06:36,440 --> 00:06:38,690 I'm not looking for it to fly across the screen just yet. 166 00:06:38,690 --> 00:06:43,400 In this first step, we're just looking for a to come to life back over onto our player. 167 00:06:43,400 --> 00:06:47,780 We need to assign those couple of fields that we are serialized. 168 00:06:47,780 --> 00:06:49,670 So you see down here play a movement. 169 00:06:49,670 --> 00:06:51,620 We've got Bullet and we've got Gun Bullet. 170 00:06:51,620 --> 00:06:57,890 We need to grab the prefab, remember, because the prefab is going to be spawned from nothing into 171 00:06:57,890 --> 00:07:01,220 existence and the gun will be on the player. 172 00:07:01,220 --> 00:07:06,890 So we find we open up the player and we say, here is the gun that's on the player. 173 00:07:06,920 --> 00:07:08,780 Now I'm going to get rid of all my errors. 174 00:07:08,780 --> 00:07:12,800 That was from me clicking play prematurely before I'd done those things. 175 00:07:12,800 --> 00:07:20,090 Now I'll click on play No Errors anymore, and if we click on Trigger, we instantiate some little versions 176 00:07:20,090 --> 00:07:20,870 of ourselves. 177 00:07:20,870 --> 00:07:21,390 Excellent. 178 00:07:21,390 --> 00:07:23,180 That's going to be funny and interesting. 179 00:07:23,180 --> 00:07:26,750 Trust me, when we actually shoot it across the screen for now, it looks a little bit dumb, but I 180 00:07:26,750 --> 00:07:27,740 think it's kind of nifty. 181 00:07:27,740 --> 00:07:33,170 Feel free to have an actual proper bullet in there and not be spawning a sprite of yourself because 182 00:07:33,170 --> 00:07:34,730 you didn't actually have a bullet like I did. 183 00:07:34,730 --> 00:07:35,330 So there we go. 184 00:07:35,330 --> 00:07:37,760 We've got the first starting point of creating shooting. 185 00:07:37,760 --> 00:07:40,940 In the next lecture, we'll give it the meaning of flying across the screen.