WEBVTT 0 00:00.270 --> 00:03.480 Now, hopefully you've already downloaded the starting project, 1 00:03.840 --> 00:07.020 so you can go ahead and click open in PyCharm, 2 00:07.410 --> 00:12.410 find the location where you've downloaded your turtle-crossing-start and make 3 00:12.510 --> 00:14.850 sure that you've unzipped that zip file 4 00:15.420 --> 00:20.100 and you've got the actual folder, which contains all of the starting files. 5 00:20.640 --> 00:25.640 So select the folder and then click open and we have to configure a Python 6 00:26.340 --> 00:31.340 interpreter and make sure that your Python interpreter is at a minimum of Python 7 00:31.380 --> 00:34.680 3.8. So you can use 3.9 or above, 8 00:35.010 --> 00:36.930 but if it's lower than 3.8, 9 00:36.930 --> 00:41.930 you might get some errors and some problems. Refer back to when we first started 10 00:42.270 --> 00:46.590 out using PyCharm and we installed Python if you get stuck on this. 11 00:47.370 --> 00:50.670 Now, if you take a look at inside our project folder, 12 00:50.970 --> 00:54.390 you can see I've already created four files for you. 13 00:54.960 --> 00:56.940 These files are pretty bare bones, 14 00:56.970 --> 01:00.420 but if you take a look at the main.py file 15 01:00.630 --> 01:03.420 which is your starting point for your program, 16 01:03.720 --> 01:07.710 you can see that I've written a little bit of code that we learned about in 17 01:07.710 --> 01:08.790 previous lessons. 18 01:09.090 --> 01:14.090 So we've created a screen object and we've set up the screen to be 600 by 600 19 01:15.270 --> 01:16.103 pixels. 20 01:16.410 --> 01:21.030 And then we've turned off the tracer by doing the tracer(0), 21 01:21.480 --> 01:26.400 and instead, we're getting the screen to update every 0.1 seconds. 22 01:26.850 --> 01:31.620 So within the while loop, the code is going to run every 0.1 seconds. 23 01:31.980 --> 01:35.100 So whatever it is that you put inside this while loop, 24 01:35.460 --> 01:38.490 it's going to be refreshed every 0.1 seconds. 25 01:39.180 --> 01:44.180 Now, you'll also see that I've imported some classes from these files; player, 26 01:45.870 --> 01:49.170 car_manager, and scoreboard. Now, 27 01:49.230 --> 01:50.970 inside these files, 28 01:51.210 --> 01:54.360 I've created the starting point for each of the classes. 29 01:54.690 --> 01:58.350 The player class is going to be the turtle which we're controlling to cross 30 01:58.350 --> 01:59.160 the road, 31 01:59.160 --> 02:04.160 the car manager is going to generate all of the random cars and move them 32 02:04.200 --> 02:05.160 across the screen, 33 02:05.580 --> 02:08.730 and then the scoreboard is just going to write the level that we're currently 34 02:08.730 --> 02:11.970 on and also the game over a sequence. Now, 35 02:12.000 --> 02:15.690 inside each of these classes, I've got pass written here 36 02:15.720 --> 02:19.290 just so that the linter will stop screaming at me. So, 37 02:19.950 --> 02:23.430 as we mentioned before, Python doesn't like things are empty, 38 02:23.430 --> 02:27.630 so empty functions, empty classes, and you'll get these errors. 39 02:28.410 --> 02:32.610 Instead of getting these errors, all I've done is simply written pass 40 02:32.640 --> 02:35.490 which essentially just makes this an empty class. 41 02:35.910 --> 02:37.560 So when you're creating these classes, 42 02:37.620 --> 02:41.880 just delete the pass and you can create it as you would normally. Now, 43 02:41.910 --> 02:45.420 in addition, we've got all of these constants in here. For example, 44 02:45.420 --> 02:47.640 the starting position of the player turtle, 45 02:47.970 --> 02:52.320 how much the turtle should move each time and where the finish line 46 02:52.320 --> 02:55.380 is on the Y-axis. In the car_manager 47 02:55.380 --> 02:57.660 we've got the colors of the cars, 48 02:57.960 --> 03:02.820 we've got the move distance of each of the cars on each refresh, 49 03:03.150 --> 03:08.150 and we've also got how much the move distance should increase every time the 50 03:08.280 --> 03:11.880 user levels up. Finally, we've got the scoreboard 51 03:11.910 --> 03:16.050 which just contains the font that you are going to use to write out the score 52 03:16.050 --> 03:20.850 board. That's pretty much an introduction to the starting file. 53 03:21.180 --> 03:22.350 So once you're ready, 54 03:22.410 --> 03:27.410 feel free to head over to the next lesson and get started with each step of the 55 03:28.080 --> 03:28.500 game.