1 00:00:03,000 --> 00:00:07,170 In this lecture, we're implementing some letters so that we can climb up the ladder and climb down 2 00:00:07,170 --> 00:00:07,710 the ladder. 3 00:00:07,710 --> 00:00:10,350 And I'm going to give this to you as a big old challenge. 4 00:00:10,350 --> 00:00:11,510 So let's get started. 5 00:00:11,520 --> 00:00:16,079 Just a reminder, you've got a piece of the ladder that you downloaded, hopefully when you downloaded 6 00:00:16,079 --> 00:00:17,610 all of this Sprite set. 7 00:00:17,610 --> 00:00:19,380 So you've got the ladder piece in there. 8 00:00:19,380 --> 00:00:22,950 What we're going to do straightaway is take on a mega challenge. 9 00:00:22,950 --> 00:00:26,220 So that being a challenge is going to be to implement ladder climbing. 10 00:00:26,220 --> 00:00:30,690 We've done all the different elements of this, so this will be a good opportunity to bring it all together. 11 00:00:30,690 --> 00:00:33,930 Remember, you need to set up your climbing tile map. 12 00:00:33,930 --> 00:00:35,310 Well, I'm going to call it climbing. 13 00:00:35,310 --> 00:00:36,390 You can call it whatever you want. 14 00:00:36,420 --> 00:00:37,890 You could call it ladder if you wanted. 15 00:00:37,890 --> 00:00:42,270 But just in case we have things other than ladders, say ropes in the future, I'm going to call it 16 00:00:42,270 --> 00:00:44,520 climbing and also the climbing layer. 17 00:00:44,520 --> 00:00:50,190 So we can check to see if we are currently touching something that should allow us to climb to create 18 00:00:50,190 --> 00:00:56,190 the climb ladder method check to see that we're touching the ladder and to apply climb velocity to the 19 00:00:56,190 --> 00:00:59,250 Y axis if we are pushing up or down. 20 00:00:59,250 --> 00:01:01,890 And then in the next lecture we'll be setting the animation. 21 00:01:01,890 --> 00:01:05,459 And there's also an issue where the character slowly slides down the ladder. 22 00:01:05,459 --> 00:01:07,080 So don't worry about those just yet. 23 00:01:07,080 --> 00:01:12,090 We'll do that in the next lecture, but get the base functionality of climbing the ladder set up. 24 00:01:12,120 --> 00:01:13,050 Take on that challenge. 25 00:01:13,050 --> 00:01:14,340 See you back here when you're done. 26 00:01:16,750 --> 00:01:17,590 First step in here. 27 00:01:17,590 --> 00:01:19,870 Let's set up some of our functionality. 28 00:01:19,870 --> 00:01:24,070 I will go over to my tile map grid, right click to the object. 29 00:01:24,070 --> 00:01:28,150 We will find tile map and I'll create another rectangular tile map. 30 00:01:28,150 --> 00:01:31,300 I'll call this the climbing tile map. 31 00:01:31,690 --> 00:01:33,670 Well, here, I'm going to go over to my layers. 32 00:01:33,670 --> 00:01:34,570 We do have ground. 33 00:01:34,570 --> 00:01:37,210 I will add a layer in addition to ground. 34 00:01:37,210 --> 00:01:39,940 Will call this climbing great. 35 00:01:39,940 --> 00:01:41,950 And then back over into the climbing tile map. 36 00:01:41,950 --> 00:01:44,710 And we will change this to be climbing right there. 37 00:01:44,710 --> 00:01:47,680 We should also do our sort order at the same time, shouldn't we? 38 00:01:47,680 --> 00:01:52,570 So I didn't mention that in the list of things to do, but it just popped into my brain just then that 39 00:01:52,570 --> 00:01:53,620 we'll need to have. 40 00:01:53,620 --> 00:02:00,940 Plus, layer five will call climbing, I imagine the climbing layer we'd want to have on top of the 41 00:02:00,940 --> 00:02:02,680 platforms underneath the player. 42 00:02:02,690 --> 00:02:05,080 So the player should definitely be on top of the ladders. 43 00:02:05,080 --> 00:02:07,750 The ladders could be on top of the platforms, I think. 44 00:02:07,750 --> 00:02:10,660 But that's up to you and that should be okay. 45 00:02:10,660 --> 00:02:15,400 Now, within our tile palette, I'm going to grab my ladder and just pop it up in the top there. 46 00:02:15,400 --> 00:02:17,230 It'll ask me where I wish to save that. 47 00:02:17,230 --> 00:02:23,500 We have our assets sprites and you know, I put the rule tile in there because we needed close access 48 00:02:23,500 --> 00:02:25,600 to it, but we don't need that for our ladder. 49 00:02:25,600 --> 00:02:28,300 So I'm going to pop my ladder into the tiles. 50 00:02:28,390 --> 00:02:29,770 We'll call this ladder. 51 00:02:29,770 --> 00:02:30,370 That's fine. 52 00:02:30,370 --> 00:02:31,300 Saved that up. 53 00:02:31,300 --> 00:02:33,970 And now in our palette, we have a letter. 54 00:02:33,970 --> 00:02:36,430 I'm going to click on that and pop one into the scene. 55 00:02:36,430 --> 00:02:37,480 We can't see it. 56 00:02:37,480 --> 00:02:40,210 That means we've done something incorrect in here. 57 00:02:40,390 --> 00:02:42,880 First of all, am I on the right tile map? 58 00:02:42,880 --> 00:02:43,510 Yes, I am. 59 00:02:43,510 --> 00:02:44,470 Am I clicked on the thing? 60 00:02:44,470 --> 00:02:45,520 Yes, I am. 61 00:02:45,610 --> 00:02:46,390 Let's have a look. 62 00:02:46,390 --> 00:02:47,320 What else is going on here? 63 00:02:47,320 --> 00:02:48,990 Click on the climbing tile map. 64 00:02:49,060 --> 00:02:52,930 It could be that we haven't actually said what the sorting layer is. 65 00:02:52,930 --> 00:02:57,600 So under additional settings sorting layer, we need to say that I am climbing bump. 66 00:02:57,640 --> 00:02:58,300 Hey presto. 67 00:02:58,300 --> 00:02:59,110 There we go. 68 00:02:59,140 --> 00:02:59,530 Okay. 69 00:02:59,530 --> 00:03:03,070 I also didn't tell you to do this, but hopefully you've figured it out that you need to play around 70 00:03:03,070 --> 00:03:05,560 a little bit with the collision on the ladder. 71 00:03:05,560 --> 00:03:08,470 So let's have a look at what we've got on our platforms. 72 00:03:08,470 --> 00:03:14,470 We have the tile map, render a tile map and there is a composite collider, 2D that looks like what 73 00:03:14,470 --> 00:03:14,800 we need. 74 00:03:14,800 --> 00:03:21,880 So back over into our climbing, we'll add a composite collider to DX and of course we need to add a 75 00:03:21,880 --> 00:03:24,730 tile map collider to DX to that. 76 00:03:24,730 --> 00:03:28,870 And you can see we have a collider on there now that doesn't look like a very good collider doesn't. 77 00:03:28,870 --> 00:03:35,950 So let's go and edit that if I jump onto my sprite itself, so click on the Sprite and you can see we 78 00:03:35,950 --> 00:03:37,780 have the Sprite editor in here. 79 00:03:37,780 --> 00:03:42,340 We can jump up to Sprite editor and change the custom physics shape. 80 00:03:42,340 --> 00:03:46,840 And within custom physics shape, I'm going to click in the top left drag all the way down to the bottom 81 00:03:46,840 --> 00:03:48,170 right bump. 82 00:03:48,340 --> 00:03:48,760 Okay. 83 00:03:48,760 --> 00:03:50,320 And now we've got a custom shape. 84 00:03:50,320 --> 00:03:54,280 I'll just bring these in a little bit, because sometimes you don't want the player kind of hanging 85 00:03:54,280 --> 00:03:55,870 right on the edge of the ladder. 86 00:03:55,870 --> 00:03:59,410 You want to make sure they've got themselves a little bit in the middle of the ladder. 87 00:03:59,410 --> 00:04:06,100 Now, if I click Apply X out of that, click on my climbing tile map and it may not look right for you. 88 00:04:06,100 --> 00:04:07,240 It might still look the old way. 89 00:04:07,240 --> 00:04:12,730 I had to click and click back on the tile map collider for a to take on that physics shape that we put 90 00:04:12,730 --> 00:04:13,120 on it. 91 00:04:13,120 --> 00:04:13,870 I still don't like. 92 00:04:13,870 --> 00:04:16,000 We've got the little green lines in there. 93 00:04:16,000 --> 00:04:16,750 I'll have a look at that. 94 00:04:16,750 --> 00:04:19,870 If we get stuck on those, then we'll play around with a few things here. 95 00:04:19,899 --> 00:04:23,320 It looks a little bit buggy to me, but we may have done something wrong. 96 00:04:23,320 --> 00:04:25,360 We'll come back to that if need be. 97 00:04:25,360 --> 00:04:31,060 What we need to do next is jump over into our scripts, jump on, play a movement I'm going to find. 98 00:04:31,060 --> 00:04:38,440 I actually create a climb ladder in update, climb ladder, parentheses, semicolon. 99 00:04:38,530 --> 00:04:42,640 I like to have the things in the order they appear run then flips right then climb ladder. 100 00:04:42,670 --> 00:04:46,780 We've got run and then flip sprite and then down the bottom here we'll do our climb ladder. 101 00:04:46,780 --> 00:04:52,150 So void climb ladder parentheses. 102 00:04:52,150 --> 00:04:55,030 Kelly Braces Let's do the movement stuff first. 103 00:04:55,030 --> 00:04:57,760 So we need to give ourselves something very similar to run. 104 00:04:57,760 --> 00:04:58,600 So what do we do and run? 105 00:04:58,600 --> 00:05:03,730 Well, we had a vector two that was all about the lefty righty, and that's the x axis. 106 00:05:03,730 --> 00:05:05,470 And then we applied that to velocity. 107 00:05:05,470 --> 00:05:07,390 So I'm going to copy all of this. 108 00:05:07,390 --> 00:05:08,410 Copy, copy. 109 00:05:08,410 --> 00:05:10,030 Pop this down into climb ladder. 110 00:05:10,030 --> 00:05:11,200 Pasty, pasty. 111 00:05:11,200 --> 00:05:16,420 It's good, I think to once you've understood the concept, it's okay to reuse your code as long as 112 00:05:16,420 --> 00:05:17,230 you know what you're doing. 113 00:05:17,230 --> 00:05:20,620 You don't want to just copy and paste and have a big old guess at things that's not so good. 114 00:05:20,740 --> 00:05:25,360 Instead of player velocity, let's rename this climb velocity. 115 00:05:25,360 --> 00:05:31,390 Actually, I'm going to highlight climb velocity, highlight copy and then change that in the other 116 00:05:31,390 --> 00:05:31,780 spot. 117 00:05:31,780 --> 00:05:32,680 There we go. 118 00:05:32,710 --> 00:05:38,290 So basically we need to flip these around instead of saying keep your existing Y velocity, we're going 119 00:05:38,290 --> 00:05:40,630 to say keep your existing X velocity. 120 00:05:40,630 --> 00:05:41,890 So you know what I'll do? 121 00:05:41,890 --> 00:05:45,850 This is going to look a little bit messy, but I'm going to do it the messy way just so you can see 122 00:05:45,880 --> 00:05:47,020 what's going on here. 123 00:05:47,920 --> 00:05:48,850 Copy that. 124 00:05:48,850 --> 00:05:57,460 Pop it up to this line above new vector to it's one of these things and in here I will delete the first 125 00:05:57,460 --> 00:06:00,760 bit of that delete and I'm just basically using the line below. 126 00:06:00,760 --> 00:06:01,480 I'm doing it this way. 127 00:06:01,480 --> 00:06:04,000 So you can see really clearly what I'm doing on my screen. 128 00:06:04,000 --> 00:06:08,650 My rigid body velocity x is the first part of our equation. 129 00:06:08,650 --> 00:06:10,240 Comma, what do we need next? 130 00:06:10,240 --> 00:06:15,430 Well, we need this move input times by some sort of climb speed, so we will move. 131 00:06:15,590 --> 00:06:17,200 Import export. 132 00:06:17,210 --> 00:06:23,150 This is why this time multiply by we don't have it yet, but we will multiply it by a climb speed. 133 00:06:23,760 --> 00:06:24,300 Okay. 134 00:06:24,350 --> 00:06:26,960 And then I'll delete that just so we've got rid of it. 135 00:06:26,970 --> 00:06:27,560 Quan speed. 136 00:06:27,560 --> 00:06:30,920 We need to create double click copy all the way back up to the top. 137 00:06:30,920 --> 00:06:36,200 We'll find our serialize field serialize field and this will be of type float. 138 00:06:36,200 --> 00:06:41,180 We'll call it climb speed and we'll initialize it at five just because that seems to be a nice number 139 00:06:41,180 --> 00:06:45,710 to initialize all these things at all the way back down again to climb ladder. 140 00:06:45,740 --> 00:06:49,280 We've got our velocity being climb velocity. 141 00:06:49,280 --> 00:06:50,000 Great. 142 00:06:50,000 --> 00:06:54,260 And then the other thing we need to do in here is make sure you're only able to climb if you're touching 143 00:06:54,260 --> 00:06:54,860 the ladder. 144 00:06:54,860 --> 00:06:56,990 So let us create our if statement. 145 00:06:56,990 --> 00:07:00,050 You know, once again, we'll go find what we did in what was it? 146 00:07:00,050 --> 00:07:01,040 It was on jump. 147 00:07:01,040 --> 00:07:06,260 That was if your capsule collider is touching a particular thing so we'll highlight that copy it pop 148 00:07:06,260 --> 00:07:13,880 down to climb ladder if my so if not my capsule collider is touching layers layers mask get mask what 149 00:07:13,880 --> 00:07:15,770 is the mask we're interested in here? 150 00:07:15,770 --> 00:07:18,950 It's going to be climbing with an uppercase C. 151 00:07:18,980 --> 00:07:21,620 How do I know it's climbing back over into unity. 152 00:07:21,620 --> 00:07:23,930 Click on our climbing tile map. 153 00:07:23,930 --> 00:07:27,920 You can see that we've got a sorting layer climbing scroll to the top. 154 00:07:27,920 --> 00:07:29,510 You can see we've got our layer climbing. 155 00:07:29,510 --> 00:07:34,580 If I to click on that, go to the add layer, I could double click on here, copy that to get the exact 156 00:07:34,580 --> 00:07:35,270 naming. 157 00:07:35,270 --> 00:07:36,770 So I know I haven't messed that up. 158 00:07:36,770 --> 00:07:43,130 And then back over into our climb ladder method and we're using climbing as the particular layer we're 159 00:07:43,130 --> 00:07:43,730 interested in. 160 00:07:43,730 --> 00:07:48,590 So this is all just exactly the same as the previous lecture where we're talking about the touching 161 00:07:48,590 --> 00:07:51,380 a particular layer for touching the ground so that we could jump. 162 00:07:51,380 --> 00:07:53,270 If you're not touching that, then return. 163 00:07:53,270 --> 00:07:54,830 Don't do anything further. 164 00:07:54,830 --> 00:07:58,520 If you are touching that, then we're going to do this particular thing. 165 00:07:58,520 --> 00:08:02,330 Let's save that up and see how we're going with our functionality thus far. 166 00:08:02,360 --> 00:08:05,840 Double check that we've got our climbing tile map set up correctly. 167 00:08:05,840 --> 00:08:08,900 It is climbing and it's called layer climbing. 168 00:08:08,930 --> 00:08:10,070 Click on the player. 169 00:08:10,640 --> 00:08:13,220 It's going to be some era somewhere in here, I'm sure. 170 00:08:14,180 --> 00:08:14,930 Run, run, run. 171 00:08:14,930 --> 00:08:16,400 Well, nice. 172 00:08:16,400 --> 00:08:17,750 And we knock over our ladder. 173 00:08:17,750 --> 00:08:19,250 That is, my friends. 174 00:08:19,250 --> 00:08:20,900 Not at all what I was expecting. 175 00:08:20,900 --> 00:08:25,490 The reason that's happened, if we click on the climbing tool map, the rigid body on our ladder, that 176 00:08:25,490 --> 00:08:26,720 was kind of funny. 177 00:08:26,720 --> 00:08:28,220 I totally wasn't expecting that. 178 00:08:28,220 --> 00:08:29,300 We don't want it to be dynamic. 179 00:08:29,300 --> 00:08:33,799 Do we want it to be static so we can't bump into it and knock it over? 180 00:08:33,799 --> 00:08:37,850 I can run out to it, but you know, bump, I'm bumping into it at the moment and that's not what we 181 00:08:37,850 --> 00:08:38,059 want. 182 00:08:38,059 --> 00:08:43,429 I can climb a little bit sort of when I've bumped into it, but we need to resolve this bumpiness. 183 00:08:43,429 --> 00:08:48,170 So if you've got this behavior as well, or if you've just been following with me, just have a think, 184 00:08:48,170 --> 00:08:51,530 pause a video and see what we need to do to stop us bumping into this. 185 00:08:52,720 --> 00:08:53,230 And you know what? 186 00:08:53,230 --> 00:08:57,900 Any time you bump into something that you want to run through, it's usually because we need to make 187 00:08:57,970 --> 00:08:59,170 it a trigger. 188 00:08:59,170 --> 00:09:04,240 A trigger is a type of collision where it doesn't stop the rigid bodies moving. 189 00:09:04,240 --> 00:09:06,310 It doesn't allow us to have that bump into effect. 190 00:09:06,310 --> 00:09:11,530 So we'll make our tunnel map collider and is trigger for our climbing tunnel map. 191 00:09:11,530 --> 00:09:14,950 And when I run over, I can move up and I can move down as well. 192 00:09:14,950 --> 00:09:15,280 Excellent. 193 00:09:15,280 --> 00:09:16,510 So that's exactly what I want. 194 00:09:16,510 --> 00:09:18,090 Can I jump off the ladder? 195 00:09:18,100 --> 00:09:25,030 No, I can't at the moment because we have set up our jumping so that you can only jump when you're 196 00:09:25,030 --> 00:09:26,170 touching the ground layer. 197 00:09:26,170 --> 00:09:27,400 So that's something for us to consider. 198 00:09:27,400 --> 00:09:30,760 Do you want you play to jump off a letter or do you want to say no, no, if you're on a ladder, you 199 00:09:30,760 --> 00:09:32,110 have to float off the ladder. 200 00:09:32,110 --> 00:09:34,960 But for now we've got the functionality that I wanted, which is we can run up. 201 00:09:34,960 --> 00:09:40,120 We can run down only when we're touching a ladder and we've got the drift issue that I was talking about 202 00:09:40,120 --> 00:09:41,530 was slowly floating to the ground. 203 00:09:41,530 --> 00:09:44,830 And also our animation continues to be the idle animation. 204 00:09:44,830 --> 00:09:47,560 So those are things we will work on in the next lecture. 205 00:09:47,590 --> 00:09:49,990 Good stuff and I'll see you in that next lecture.