WEBVTT 00:00.590 --> 00:11.510 Now that we have the player moving and shooting crap from last time you left right and shoot shoot your 00:11.510 --> 00:17.460 missile and that we have that going let's start implementing the shield. 00:18.140 --> 00:30.980 So you won't have four shields so here have added. 00:31.640 --> 00:35.860 Add this number of shields and we have four OK. 00:35.980 --> 00:44.920 Just like Says appear in court here says debris sanctuary can be SOP's neath the forby shoe. 00:45.100 --> 00:47.100 And for. 00:47.800 --> 00:52.040 And here we're going to make our shields. 00:52.120 --> 00:53.570 It's going to be an array. 00:53.710 --> 00:54.690 Schewe. 00:57.120 --> 00:58.170 We have four 01:02.490 --> 01:04.130 K that. 01:04.490 --> 01:12.020 And just like within that game and the player we're going to have a shield. 01:13.540 --> 01:21.460 Shields like that in we're actually going to pass in the game and we're going to pass in the game cuz 01:21.460 --> 01:29.390 we need to know how wide the game is in Upper Pass in the shields. 01:29.410 --> 01:30.280 Soames 01:33.590 --> 01:46.080 in the numbers it's. 01:46.290 --> 01:53.620 So now shield that so now it's implement this 01:59.360 --> 02:01.050 this. 02:01.660 --> 02:09.460 So want to try to as evenly as possible space out the shields. 02:09.510 --> 02:09.930 OK. 02:09.930 --> 02:16.510 So to do this we're going to need some math and are also going to need a C string. 02:16.590 --> 02:19.140 And it's very kind of glue them here. 02:19.220 --> 02:21.180 Just take this out. 02:21.450 --> 02:26.120 And what's actually in the shoe. 02:26.160 --> 02:36.370 So we're going to need some padding essentially. 02:36.390 --> 02:43.690 So the first padding goes to the ceiling function. 02:45.130 --> 03:05.150 In Lopes of the games window size it's with minus number of shields times the shield is right we can 03:05.230 --> 03:11.760 have already made it so the shields break which is seven. 03:11.910 --> 03:16.680 And you don't have this this constant put this in here. 03:17.100 --> 03:18.350 OK. 03:18.450 --> 03:31.150 So this gives us how much space or how much with the shields the total amount of Shields take up minus 03:31.540 --> 03:36.660 the with the window. 03:36.820 --> 03:42.340 And we're going to divide that by. 03:42.420 --> 03:45.420 It's also going to be a float number. 03:45.820 --> 03:47.970 Shields plus one. 03:48.480 --> 03:49.620 OK. 03:50.770 --> 03:55.390 So really this is what this is saying is 03:58.050 --> 04:06.600 figure out how many or how much space you have left over after you kind of tracked all the shield widths 04:07.080 --> 04:08.840 from the width of the window. 04:10.460 --> 04:20.750 Divided by the number of kind of empty spaces between the shields which is always going to be the number 04:20.750 --> 04:25.800 of shields plus one and we're going take the ceiling of that K 04:28.600 --> 04:33.910 and that will be essentially be leftmost and rightmost 04:36.160 --> 04:38.530 Witz or pat. 04:38.860 --> 04:43.030 So we're going to do the same thing for kind of the in-between patting 04:45.550 --> 04:50.070 each and it's going to be the exact same thing except the floor. 04:50.080 --> 04:53.980 This is came 04:58.800 --> 05:01.780 land minus number. 05:02.010 --> 05:04.700 She'll it's. 05:04.760 --> 05:06.870 She'll separate CH 05:12.120 --> 05:14.370 over floats. 05:17.470 --> 05:18.230 Amber 05:21.820 --> 05:32.960 splits one and we're doing this because B it doesn't four times seven doesn't even divide eight. 05:33.170 --> 05:33.540 Right. 05:33.540 --> 05:37.960 Which is the width of our window. 05:38.150 --> 05:48.030 So now we're going to go through all the shields in space. 05:51.060 --> 06:00.010 Our shields plus get the current shield 06:06.860 --> 06:11.480 and we're going to set the position. 06:14.950 --> 06:20.120 First padding is just adding. 06:20.650 --> 06:22.690 So this is kind of the leftmost padding. 06:22.700 --> 06:28.200 Times are times plus times. 06:29.030 --> 06:31.010 This bright air of the shield 06:34.820 --> 06:44.610 with plus the X-Pac just like the padding between all the shields. 06:45.450 --> 06:48.480 And then for the y position 06:51.640 --> 07:02.740 it's going to be game window size height minus the player. 07:02.980 --> 07:13.800 Great height minus one so one above the players sprite minus the shield. 07:16.910 --> 07:17.290 CH 07:20.010 --> 07:21.280 Right. 07:22.090 --> 07:27.930 Minus 2 because we want to be kind of a little bit above the player. 07:28.070 --> 07:29.540 OK. 07:29.590 --> 07:36.690 And then we'll go through each row of the shield 07:48.130 --> 07:53.120 and we need to say shield to arch. 07:53.370 --> 07:54.220 Right. 07:56.050 --> 08:05.250 Row equals to new Shar she'll each. 08:05.830 --> 08:06.500 Plus One. 08:06.550 --> 08:15.500 So these are going to be just strings and an organic copy copy. 08:15.570 --> 08:19.140 Make sure you include the string here. 08:20.070 --> 08:30.830 And wrister copy these in the current shields sprite row with the shield right row 08:35.210 --> 08:38.400 in the shields bright. 08:38.560 --> 08:42.760 Is this so capias. 08:42.820 --> 08:48.120 It's going to look like it's really going to look like what you had here right. 08:48.340 --> 08:50.750 This very 08:53.380 --> 09:05.790 So just can't stop star shields brides of and then just the top say you need this Doubleback backslash 09:05.790 --> 09:10.510 to escape the single backslash they will need to draw. 09:10.950 --> 09:20.970 And this is just seven eyes and then I forward slash to back slashes and there's three or six one two 09:21.000 --> 09:24.990 three. 09:25.990 --> 09:28.410 And there's just three pieces here. 09:28.510 --> 09:30.190 OK. 09:30.760 --> 09:37.280 So now that should be it for the initialization of the shields. 09:37.540 --> 09:45.010 But since now we're doing some memory allocations we should be doing cleanup as well. 09:45.010 --> 09:48.000 Just make sure that can memory. 09:48.430 --> 09:54.440 So as a clean up shield it's shield 10:04.780 --> 10:09.250 and Woods really go through all the shields we have 10:11.720 --> 10:12.530 simple 10:16.590 --> 10:18.670 and current shield 10:25.100 --> 10:29.520 and go through all the rows of that shield 10:41.200 --> 10:45.880 and called the lead which array on the 10:48.830 --> 10:53.510 Spryte. 10:53.880 --> 10:57.080 So we'll need these two functions. 10:57.210 --> 11:07.020 Copy that one piece or their knit shield and shields 11:12.220 --> 11:15.130 so it's call and it shields 11:24.480 --> 11:28.200 now and again of course. 11:28.390 --> 11:34.400 Silly me. 11:34.640 --> 11:38.960 So this. 11:39.430 --> 11:39.840 OK. 11:40.000 --> 11:46.750 So now that we've kind of initialized shields we should clean up the shields later. 11:49.630 --> 11:49.990 It's 11:56.330 --> 11:57.320 like that. 11:57.840 --> 11:58.450 OK. 12:00.680 --> 12:04.250 And now we need to actually draw the shields. 12:04.280 --> 12:12.930 So in our draw game function will also pass the shoe. 12:12.970 --> 12:13.370 It's 12:23.510 --> 12:24.010 OK. 12:24.130 --> 12:25.200 It's at 12:30.890 --> 12:34.450 an drug game function. 12:36.900 --> 12:40.600 And just like we have dropped player we're actually going to make a new function 12:43.120 --> 12:45.320 called Trosch. 12:45.380 --> 12:45.610 It's 12:57.610 --> 12:58.020 not 13:01.150 --> 13:03.560 in or trust you. 13:03.570 --> 13:12.350 Is this and. 13:15.630 --> 13:22.880 This it's reference not comma. 13:23.060 --> 13:26.430 So our draw shields function will be usable. 13:30.160 --> 13:33.190 All you do is through all the shields that we have 13:35.780 --> 13:39.360 in. 13:39.510 --> 13:42.090 Draw her get current She shield 13:49.700 --> 13:53.080 so and we'll just say dross right. 13:54.990 --> 14:02.700 She'll position dot X and she'll opposition 14:05.200 --> 14:16.990 Y and when to cast this as cast to conc chars and shield Spryte. 14:17.200 --> 14:19.680 So otherwise a mess up it doesn't. 14:19.700 --> 14:23.020 And it should be but this is correct. 14:24.040 --> 14:27.230 And just the shields break it's 14:30.890 --> 14:31.940 OK. 14:33.020 --> 14:42.410 So now in our main function we're not passing the shields games. 14:42.560 --> 14:43.070 That's 14:46.970 --> 14:47.330 so 14:50.940 --> 14:53.820 so initialiser shields. 14:54.120 --> 15:03.800 We clean up the shields later on because we do use a memory alligations and we draw the game with the 15:03.800 --> 15:09.110 shields to show you side shields again. 15:09.110 --> 15:18.020 So again we're just all this is doing is really just spacing it out nicely if you want to kind of do 15:18.020 --> 15:21.880 that yourself some other way you can. 15:21.950 --> 15:30.720 This is a little bit confusing to you but just know that really is doing is evenly speccing the shields. 15:30.800 --> 15:33.080 OK that's that's kind of it. 15:33.290 --> 15:36.030 And if you run it now. 15:37.570 --> 15:55.190 Of course when she uses. 15:55.520 --> 15:56.730 Oh yeah. 15:57.230 --> 15:59.420 You don't need those. 15:59.960 --> 16:03.280 You don't want the in the Drashti cod do not want the reference. 16:03.310 --> 16:07.130 Actually that's redundant. 16:07.130 --> 16:07.460 So 16:10.190 --> 16:11.390 now if you're in it 16:18.740 --> 16:26.290 I don't see it yet because in our draw game we're not calling you. 16:26.350 --> 16:30.420 So here now draw shields. 16:32.220 --> 16:37.730 It's member she is that gay. 16:37.780 --> 16:39.160 So now you're 16:42.060 --> 16:43.960 Haresh. 16:44.690 --> 16:52.200 And if you try to like shoot kind of you know won't collide yet. 16:52.270 --> 16:52.690 Right. 16:54.210 --> 16:59.520 So but all of it's looking almost correct. 17:00.320 --> 17:06.880 Sides the fact that it doesn't kind of intersect yet is fine. 17:06.890 --> 17:16.080 So in the next lecture I want to actually be able to collide our missiles with the shields we've just 17:16.080 --> 17:16.500 drawn.