WEBVTT 00:01.270 --> 00:06.970 The last part of the game that we're really missing is the alien UFO that we made before. 00:06.970 --> 00:19.820 So over here you have this alien UFO as some random number of points from 50 to 100 or 200 is the size 00:19.820 --> 00:21.690 and position of course. 00:21.860 --> 00:23.770 So we're missing that. 00:23.810 --> 00:30.470 So let's start implementing our alien alien ufo 00:32.950 --> 00:34.420 feel like that. 00:34.660 --> 00:34.940 Kay 00:37.380 --> 00:42.930 and you need to kind of set up the UFO. 00:42.990 --> 00:55.930 So I'm going to call it set up method reset UFO and it's going to take game in it's going to take UFO 00:59.790 --> 01:03.930 good to clear up here. 01:04.290 --> 01:08.070 Turn nothing will take the game. 01:10.430 --> 01:18.040 It'll take you. 01:18.210 --> 01:22.390 So here now implemented. 01:30.320 --> 01:43.330 So the first thing is the UFO size and size should be. 01:43.530 --> 01:48.060 I think we actually have those. 01:48.190 --> 01:50.180 We don't find that. 01:50.180 --> 02:00.640 So the UFO alien fo Spryte which is I think it was six or eight 02:04.760 --> 02:09.060 so one two three four five six. 02:09.060 --> 02:11.730 Yes six. 02:11.750 --> 02:25.170 And the alien foes separate height to K and that's also make this right you know. 02:25.230 --> 02:29.900 FO conc star 02:34.070 --> 02:35.700 who's right. 02:38.890 --> 02:39.720 Is 02:46.570 --> 02:51.750 this copy this. 02:51.990 --> 02:57.910 Here in it needs to because it's a backslash right. 02:59.240 --> 03:03.090 And the next one will be the bottom 03:15.580 --> 03:24.180 so the alien phone doesn't have the animations such as the static sprites we have. 03:24.220 --> 03:29.230 So now that we have that info. 03:29.440 --> 03:30.720 Right. 03:33.140 --> 03:41.960 Float Sly's. 03:42.090 --> 03:43.140 All right. 03:50.050 --> 03:51.880 And we. 03:52.030 --> 03:53.370 For the points 03:56.220 --> 04:03.440 cakes can be random from 50 to hundreds Hirose ranch. 04:04.160 --> 04:08.860 Percent are modulus 4. 04:08.880 --> 04:15.130 So this will give a number of between 1 and 0 and 3 Add 1. 04:15.150 --> 04:25.960 So that give us a number between 1 and 4 and I would say times 50 they give us a number between 50 and 04:26.020 --> 04:27.710 200. 04:28.180 --> 04:34.680 And for our position now so be a little bit different than what we did before. 04:34.670 --> 04:38.510 The x will be not in play. 04:38.680 --> 04:39.100 Right. 04:39.180 --> 04:45.030 So your phone only goes in the horizontal direction right. 04:45.070 --> 04:45.650 Right. 04:46.020 --> 04:50.700 So the x will be non-place. 04:50.710 --> 04:58.250 I mean this means no UFO on the screen. 05:00.540 --> 05:02.970 And for the y position 05:06.870 --> 05:11.860 this will be UFO dot sized. 05:11.870 --> 05:14.820 Watch height. 05:17.770 --> 05:28.670 So it will just be kind of two to down from from the top. 05:28.790 --> 05:29.230 OK. 05:31.360 --> 05:39.500 And of course the position again is this is the top left position so it will actually kind of start 05:39.490 --> 05:42.820 started to and then will be 05:45.760 --> 05:57.320 this line so Position wise to be at this line and then three position this position right here. 05:58.890 --> 06:01.560 So. 06:01.750 --> 06:07.140 So that's the Reset the foe. 06:07.210 --> 06:10.200 Now we actually have to make it kind of work. 06:10.230 --> 06:19.270 So go in the woods go back up here. 06:19.380 --> 06:22.070 So we have the alien now set. 06:22.130 --> 06:22.570 OK. 06:22.620 --> 06:28.280 So let's actually have him update itself. 06:28.290 --> 06:35.860 So in a video game we're going to also pass in the UFO this 06:38.450 --> 06:46.270 and to modify the game to pass in FO 06:50.300 --> 06:50.720 So 06:59.320 --> 07:00.850 in your 07:04.800 --> 07:17.210 will say after the after this we'll say if the UFO is not in play. 07:21.470 --> 07:27.980 Then somehow we should put him in play and we don't know how to do that yet. 07:29.760 --> 07:32.850 But you do that second 07:35.420 --> 07:38.250 an otherwise if he is in play. 07:38.310 --> 07:38.850 So 07:41.810 --> 07:45.330 you info in play somehow right. 07:45.330 --> 07:50.720 You don't know how to get in here going to say otherwise he is in play. 07:50.720 --> 07:53.920 So update your. 07:54.430 --> 08:01.460 OK so let's start with this one. 08:01.620 --> 08:04.500 How would we put it in play. 08:04.500 --> 08:08.340 So it really just spawns randomly sometimes. 08:08.400 --> 08:10.120 OK. 08:10.170 --> 08:15.630 So I think what we'll need is in the 08:18.360 --> 08:20.010 game structure 08:22.520 --> 08:32.860 going to put a timer essentially a clock t type in and call it game timer. 08:36.250 --> 08:39.780 And in our 08:42.850 --> 08:48.160 update game I'm going to pass in the delta time that year we have 08:50.750 --> 08:52.250 so here 08:56.620 --> 09:00.910 we have delta times in the past in the function 09:03.670 --> 09:04.610 here. 09:10.400 --> 09:19.820 So all the time and so now I'm passing through that all the time that we have. 09:20.490 --> 09:31.300 And our game timer we're just going to add the depth time each time a new update happens. 09:31.930 --> 09:37.280 So why did I do all that we want to say. 09:37.450 --> 09:46.550 We're going to use it for our calculations so if game timer and again this doesn't matter too much but 09:48.990 --> 09:51.720 this is just kind of a random thing. 09:51.720 --> 09:59.760 So if the modulus is equal to say 13. 09:59.860 --> 10:06.830 So if we take the game time the current game time and we model this by 500 and that somehow equals to 10:06.850 --> 10:10.730 13 then we'll put the actual your phone in play. 10:10.750 --> 10:18.220 So was going to say put UFO play. 10:18.310 --> 10:25.210 So I was just kind of random It doesn't really doesn't really matter how you put it in play or how you 10:25.210 --> 10:26.590 decide to put it in play right. 10:26.590 --> 10:27.970 This is what we're doing. 10:27.970 --> 10:31.970 We're deciding whether or not we should play or not. 10:32.180 --> 10:35.620 You can you can come up with your own formula if you want. 10:35.750 --> 10:43.550 This is the one I'm going to be using and we find error reviews of function that we don't have yet. 10:43.760 --> 10:55.320 Just call or call the put your phone in play and take the game and the UFO so otherwise we're going 10:55.320 --> 11:02.260 to say if if we've actually hit the 11:05.590 --> 11:11.100 layered missile and the folks photoshopped Zeeshan 11:14.030 --> 11:16.360 dot size. 11:16.650 --> 11:19.070 So we made this function before. 11:19.110 --> 11:27.160 So that was an I think it was in the aliens collision or something. 11:27.610 --> 11:32.550 So if we actually hit the UFO then we should get the points right. 11:33.620 --> 11:38.390 Layered score get the points that Phil has 11:41.230 --> 11:43.730 and the missile should be set 11:49.300 --> 11:51.700 and we should reset the UFO as well. 11:56.920 --> 11:57.720 OK. 11:58.220 --> 12:07.130 Otherwise we should update the UFO to actually keep going across the screen so we're going to call that 12:07.130 --> 12:08.130 update you know 12:11.580 --> 12:13.460 and we don't have this function yet. 12:13.500 --> 12:22.120 So we need to add two new functions called Put your play and update your phone. 12:22.130 --> 12:26.300 So let's start with we put your phone in play. 12:26.410 --> 12:39.840 So be very simple. 12:40.230 --> 12:50.280 She's game and all. 12:50.600 --> 12:52.840 Copy this down here. 12:56.500 --> 13:06.640 See your phone and play and really all this will do is we'll set the position easier. 13:06.650 --> 13:11.040 So it's always going to start at the left side of the screen. 13:12.160 --> 13:21.170 So that's really it you could decide and I'll leave this up to you if you want to somehow maybe spawn 13:21.170 --> 13:24.760 it at the right side of the screen and have it go left. 13:24.880 --> 13:27.760 You could try that as well. 13:27.870 --> 13:31.060 I'm just going to always go from left to right in this one. 13:31.150 --> 13:35.770 But if you want to change it yourself go right ahead. 13:35.860 --> 13:41.210 So we're also going to define update. 13:43.430 --> 13:44.960 Cleared up here. 13:51.140 --> 13:53.020 It'll take game 14:11.700 --> 14:12.200 like that. 14:17.570 --> 14:27.330 So let's implement the FO. 14:27.360 --> 14:31.730 So the update should be really simple. 14:31.890 --> 14:35.160 Basically we're just going to say his exposition 14:37.890 --> 14:41.010 equals 1. 14:41.720 --> 14:42.350 That's it. 14:43.950 --> 14:49.050 And if the position 14:52.050 --> 14:57.420 plus the position to X plus the foe's size 14:59.890 --> 15:12.610 each with if that's greater than or equal to the game's window size so if the right most edge of the 15:13.970 --> 15:22.170 of the UFO is greater than or equal to the window size then we'll just make him disappear. 15:22.200 --> 15:24.780 So scary set of 15:36.180 --> 15:38.260 so pretty simple. 15:38.580 --> 15:44.010 And we're also going to need to be able to draw a ring that. 15:44.060 --> 15:56.160 So down here and I say draw your foe and each pass in the game but you don't need it. 15:57.000 --> 15:59.420 Really. 16:01.420 --> 16:05.900 Actually no we actually don't need to game. 16:05.930 --> 16:09.090 So you can say alian you fo 16:11.740 --> 16:24.860 fold this and if it's in play is if you fold up position and much x is not equal to 9 way 16:31.730 --> 16:33.470 and we'll draw this right. 16:36.280 --> 16:37.520 Proper position 16:47.920 --> 16:52.160 in. 16:52.300 --> 16:53.090 Right. 16:55.390 --> 16:56.540 Union. 16:56.670 --> 16:57.200 Right. 16:57.250 --> 16:59.040 CH Right. 17:07.010 --> 17:07.870 To call. 17:07.930 --> 17:09.050 That's right. 17:13.370 --> 17:15.100 That's right. 17:49.370 --> 17:52.570 OK we'll see. 17:52.580 --> 18:04.170 Now for the draw you fo in our you know our draw 18:08.390 --> 18:21.270 you know our Drog game are also going to pass in the. 18:21.360 --> 18:22.720 I actually think you know it's wrong. 18:22.720 --> 18:24.130 That's right. 18:24.340 --> 18:24.850 This 18:28.550 --> 18:30.230 should not exist. 18:32.430 --> 18:35.940 Sometimes things just occur to you when you're not even thinking about it. 18:36.510 --> 18:36.820 OK. 18:36.840 --> 18:45.650 So anyway the impasse pass in the your phone to draw the game in game passing you know 18:50.490 --> 18:53.320 here an update. 18:53.320 --> 18:58.840 So in here I'll say also Colts in 19:04.690 --> 19:09.820 that in trot down here. 19:09.920 --> 19:16.650 So if the well what do you say draw. 19:18.570 --> 19:19.210 In 19:23.040 --> 19:27.670 K so that's basically it's 19:30.370 --> 19:31.160 run this 19:50.720 --> 19:51.520 position. 19:51.600 --> 19:53.050 Sorry that 20:06.680 --> 20:11.260 no he probably didn't declare the draw you know. 20:11.310 --> 20:13.780 Yeah do that. 20:14.010 --> 20:14.280 So 20:18.800 --> 20:19.420 now this 20:23.700 --> 20:24.240 so 20:27.610 --> 20:28.450 is killed. 20:28.520 --> 20:34.550 So it's just hanging out under the shelter and hopefully hopefully the fall will just kind of appear 20:36.110 --> 20:37.430 and it's totally random. 20:37.430 --> 20:44.770 So one thing we might want to do is make the make it up on there it is. 20:44.800 --> 20:48.420 So I see it disappears. 20:48.420 --> 20:50.380 OK. 20:51.110 --> 20:51.970 So that's good. 20:54.200 --> 21:02.290 And if I can get it to appear again and actually hit it that awesome. 21:02.630 --> 21:07.430 I don't want to waste too much time. 21:07.590 --> 21:08.430 There it is. 21:08.530 --> 21:10.150 See if I can hit it. 21:10.460 --> 21:11.190 Yes. 21:11.260 --> 21:12.740 I got 200 points there. 21:13.030 --> 21:15.200 So that's working as well. 21:15.260 --> 21:16.900 So awesome. 21:16.930 --> 21:24.660 So there is the UFO and all really the major gameplay is working. 21:24.820 --> 21:30.520 The last thing I want to do we could actually stop this game right now and that would be pretty good 21:30.940 --> 21:39.640 but I kind of got to go one extra step and I want to be able to have a high score table and have your 21:39.760 --> 21:45.130 name be actually registered in the score table and good luck. 21:45.220 --> 21:47.710 Reload it from from a file. 21:47.800 --> 21:48.370 OK. 21:48.580 --> 21:53.120 So that's what we're going to concentrate on in the next lecture.