One for the background, and one to show the game title, so make a new sprite now and import the "bg_tile_dark.png" image from the TutorialResourcesfolder (if you have any issues, you can also find the images here). So, double click on the Player in the Asset Browser and then choose Events > Add Event. This is a powerful tool if you want to get a 2D game running quickly, and that can only be a good thing for gaming on the Android platform. We are now going to use this variable in the Step Eventof the player object to control how often the shooting occurs, like this: What we have done is "nest" an if variableaction within the mouse down action, so it now reads "if the mouse is held down, and if the variable cooldown is less than 1 {do something}". About us: Career Karma is a platform designed to help job seekers find, research, and connect with job training programs to advance their careers. Complete Game; Beginner. section Collision Mask We have our enemy spawn object now, but we don't have anything to re-spawn the enemies when there are none left, so for that we are going to create a controller object called obj_spawner. When you start a game, you aren't normally just dropped straight into the action, but instead you are usually presented with some kind of title screen. is also accompanied by a short video that takes you through each of the steps outlined in text, and you can close GameMaker Studio 2at any time in the progress of this tutorial (saving your project) and when you next load the project you will be taken to the place where you left off. To do that, let's first change the Step Eventaction Instance Createof the object "obj_player" by simply changing it to use the player position (x / y) instead of the mouse position (mouse_x / mouse_y): Once you have made that change, we need to switch to our object "obj_bullet" (double click it in the resource tree, or use / + to bring up the Workspace Switcher). Your player can move and shoot, and you have enemies that attack the player. About the author: Ethan Scully is a writer, editor, and game developer who manages Career Karma's content partnership initiatives and is currently based in Istanbul. We want to change this so that the Assign Variable action will only be called if a key is pressed so now we need to drag it onto the right hand side of the if keyboard downaction like this: Now what we have is the "if" checking for a key and only if it returns true (the key is being held down) will it run the assign variable action. But what are we going to set the rotation too? Click on the Rooms folder in your Asset Browser, and youll see that you already have an asset called Room 1 in here. All instances have some built-in variables, of which "x" and "y" are perhaps the most important as they set the position of the instance in the game room. Using obj_scorein this case is fine because we are only going to have one of them in the room, but you can use this method to target a single instance if you target an instance ID (which you can get from the Room Editor or by certain functions), by placing it in the text field at the top which says Expression: Our action will now add 5 onto the thescore variable every time an enemy instance is destroyed, and we can now add the score object into our game room. starting with an idea Since weve just gotten the program, lets look over the interface. How to Learn Python: A Detailed Guide for Programmers, Java Tutorials: Learn Java Online for Free, How to Learn Amazon Web Services: AWS Training and Classes, Laravel Tutorials: Learn Laravel Online for Free, GraphQL Tutorials: Learn GraphQL Online for Free, Perl Tutorials: Learn Perl Online for Free, HTML Tutorials: Learn HTML Online for Free, Tableau Tutorials: Learn Tableau Online for Free. This means that changing an instance's properties will not change the properties of the object it was made from, however changing an object will change all subsequent instances created from it. This little chap is called Bee Boo.. if With this sprite we need to change the origin. If they are, the player moves one step in that direction: Do the same thing for the other direction. So now we need to slow the rate of fire down a bit. For this we add the Set Instance Alphaaction into the Create Eventand set it to 0: We also want to make sure that the sprite will be drawn in the exact centre of the screen, so we need to add the Jump To Pointaction, from the Movementlibrary, like this: This action will set the instance to the position specified, and in this case we are using the globalvariables, room_width and room_height to get the middle of the room (half width and half height) for the instance when created. Make sure youve unticked uses physics as this will make things more complicated. So what we need to do is draw the score text relativeto the view camera. You can close the font editor now, as the next bit of styling we need to do is done through code. section However our tile set has all the tiles packed right beside each other, so we don't need to worry about this. event and a new window containing a text editor to type your code into. We will use the same approach to scaling that we used previously for the image_alpha, so add the Set Instance Scaleaction and then we'll do an If Variablecheck on it: This will scale up the image xscale and image yscale by 0.02 every game frame (note that the relativecheck-box is marked) and then it will check the value of the image_xscale variable to see if it is greater than 1 and if it is it sets the scale to 1. Lets change that. This makes GameMaker ideal not only for beginners but also artists and designers that want to build games without learning to code. You can do this by clicking on the tile layer icon in the Room Editor window this looks like an isometric grid. Luckily, we have an event called Key Down that also lets us pick the key we want to listen for. section , and add a new step event. This is the equivalent of a scene in Unity. Youll notice you have some more options now. The next step we want to take in our GameMaker Studio 2 tutorial is to make a character that the player can control. are as follows: That might not seem like much, but with this knowledge you can start to set up more complex displays for your player to include any number of written details, and format it to follow the view camera at the position you want. we will change that by making it more attractive to the player using tilesand also expand the play area using cameras. We now need to add the action Set Instance Scale(from the Instanceslibrary) into the Create Eventof the object. If you run the game now, you'll get the title screen and pressing Enter will take you to the main game room to play. Anywhere is fine. which will be a completely empty object with physics once again disabled. Change the dropdown menu right above the preview of the sprite from Instance don't justget placed in the room editor, they can also be created (and destroyed) at runtime using certain actions, as we'll see. + the mouse wheel So if you have grass on top of your platforms and dirt on the sides, youre covered! section You can actually delete this and type in any text to get a preview of how it will look in the game. To get our score to go up as we play, we need to add some extra actions into the Step Eventof the object obj_enemy, so open that now if it is not open already. But to get into making our prototype, we just need something that tells us where our player is and how big they are. The Key Up Event detects when a key has been releasedand won't trigger until that happens. This score will then be displayed prominently at the top of the screen To keep things clear and easy to manage in our arena shooter project, we need to make a new object to act as our main "controller" object for the score. In this event, we will add the following Assign Variableaction : "hp" is an instance variablethat we want all instances of this object to have, and it will store the "health points" for the enemy object. By default, its set to This controls the vertical position of our object, with the top being zero. This can be really useful and can give a nice "catchup" effect if the instance being followed moves faster than the values given, but for our game we want the camera to alwaysstay centered on the player, so we leave it at -1, which is essentially telling the camera view to move "instantly" to the instance being followed position every game frame. You can close this object now and go back to the game room. Workspace The other options in the Font Editor are outside of the scope of this tutorial, but you can read up on them by pressing to open the manual and going to the section on the Font Editor. In this way, every 60 frames a new enemy will be created for the player to shoot at. It's also not a very big play area for the player to move around in, making the game feel cramped. Putting This However, Ive found that visual coding languages like Drag and Drop tend to hold back developers that would be better off just buckling down and learning code. GML, or GameMaker Language, is GameMakers proprietary programming language. See also:How to make Android games for complete beginners. Image Size Review the Import options for this module. tutorial_game_files.zip Objects will be used for almost everything in your game, from the Player, to the enemies, to the bullets and explosions, and you can define how they behave and react by giving them code. We need to add a Collision Eventhere to detect the collision between the bullet (the calling instance) and "obj_enemy" (the colliding instance): Now, in this event we will need to affect the "hp" variable of the colliding instance, and we saw that we could do this using the "point" method previously. These control the tile set cell width and height and setting these will dictate how the tile set image will be split up and how it will be displayed when painting it into a room tilemap layer. However we want to edit this as it is too large for what we need, which means you have to click the Modebutton and select Manual. In this case we will simply edit the default room "room0". We have our new project and an empty resource tree, so it's time to get started making our game. Tile Sets are always comprised of a single sprite image, and must always be based on a grid, although the grid does not have to be square, just regular, ie: you can have 24x96 tiles, or 32x32, etc as long as each part of the tile set image is on a grid it can be used in GameMaker Studio 2as a tile set. Go ahead and press When you import the image, you'll see that it is covered in a grid that is 16x16px per cell. Now add a Create Event: We are going to have our object draw its sprite fading in gradually, just to create a slightly nicer looking title screen. So double click on the object "obj_player" from the resource tree to open it in the current workspace if it's not open already. We have set the direction so now we use this action to set the speed to 16, which means it will move 16 pixels in the given direction every game frame. In this case we are going to add an action to the event to make the player instance move right across the screen. from the resource tree into the room. It can become tricky to remember whats what, so this helps with organization. x For now, we can just use a static character that glides around the screen. Large triple-A studios start with a long design, concept, and prototyping process. So, change the "3" in the Step Event Assign Variableaction to 10 and test again. To start with lets name the tile set "tl_background" and assign it the sprite we just created. Here, were going to move the player slightly in the air so there is no collision, then apply vertical force and set the direction to up. This will give us a nice, natural jump movement. Now, proceed to make a Go ahead and run your game again. Sprites section We actually need to use a functionto get the angle that we want to set the sprite to, and then we'll store the value it returns in a variable ready to set the rotation of the instance. Youre also going to drag and drop your invisible ground layer a few times and resize it to perfectly match wherever you drew your tiles. You should be able to move freely around the screen. This isnt something youll need to worry about for a long time but its useful context! Options > Main
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