Keep in mind that instance variables need to be initialised before use, and so that is why we have them in the Create Event, as that event is run for every instance the moment it is created in a room and the event only runs onceso the variable is only set once at the start. This is necessary because the tiles themselves are in the Tile layer and dont have any impact on our game objects. Sprites Lets make sure it all worked and press can be found from the following links: This is the My First Arena Shooter | DNDtutorial designed to get you started making your first game with GameMaker Studio 2. This tutorial will take you through the process of creating a small game using. Let us know what you think of GameMaker Studio in the comments below, and if you would like to see a tutorial for GameMaker Language in future. We covered how to add a sprite in the first part of this tutorial, so we'll only briefly run through the procedure here: If you have used the sprite that we used for the tutorial, you should be placing the origin near the bullet image "head" (as shown in the image below), as that is the point that we want to rotate it around and "pin" it into the room with. In the action above we will use the random_range function to give us a random value between 0.8 and 1.2 for the sound effect pitch, and so every time it is played it will sound slightly different. , go to We now want to add "spread" to the bullets so we use this action along with the function random_range to add or subtract up to 4 to the direction. New Although your preferred engine might be something quite different from the one we will use today, the principles used here are still useful to any fledgling developer. Before we begin with the GameMaker Studio tutorial, what exactlyisa GameMaker Studio? Like Unity and Unreal, GameMaker Studio, is a game engine that incorporates a powerful IDE (integrated development environment) for easy development. It moves 50 pixels every frame, compared to your character that moves 5 pixels every frame. Before you try it out, dont forget to drag your world object into the room with your box and player. You'll see that everything is much faster, and smoother when playing. The final action block should look like this: You can hit the Run button now and see what happens Before continuing, we should look at the concept of layersin a bit more depth. Step 1. . They are special events that will count down every game frame until they reach 0, at which time they will perform the action code added into the event in the object. If you have any issues, you can also find the sound here. section Call this object Player and select the sprite you made earlier. Right now, nothing happens; weve got a bit further to go before this GameMaker Studio tutorial is through! The Key Up Event detects when a key has been releasedand won't trigger until that happens. You should now have a player ship that can move and shoot, and bullets that are timed to come out at regular intervals. At the moment it's 32px, which means that the player would have to move right up to the edge of the view camera window before it will move to follow, which in an arena shooter like ours is just too small we want it to move before that so that the player can see what is around them. This is done from the background Layer Propertieswindow: The background layer is a layer that can be cleared to a single colour and/or have a single image applied to it. . We now need to make a new Tile Setresource, which is done the same way as for sprites and objects, etc by right clicking on the Tile Set resource folder and selecting Create. Now, create a new object (Ive named mine Resource Tree Here's many tutorials on the internet and amazing manual. 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. , which is a special variable that all objects have, and making it equal itself minus 5. However, it's not very pretty, since everything happens on a plain black background. engine made for 2D games To copy multiple actions, first you have to select them by holding down / and then left clicking on each of the actions we want to copy. For that we use the if key downaction which will evaluate to either true or false if the given key is being held down, and if it evaluates to true, then we will move the instance by 4. All trademarks are property of their respective owners in the US and other countries. In this case we have named the variable "dir" and in future actions that will be what we use to refer to it. We're using the mouse position global variablesfor the moment as the position to create the instance just so that you can see something being created in the test game, and we are creating it on the layer "Instances". In this case we are telling GameMaker Studio 2to take the x position value and then add 4 to it. on resource name and call the room "rm_game". we are going to talk about "spawners", which will be controller objects designed to constantly spawn enemies. This is a drag-and-drop tool with relatively less cording involved than many of its rivals. 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. Lets give our character that power. This provides you with something you can actually see: real results. It can become tricky to remember whats what, so this helps with organization. Open the action editor in the Step Event(double click the event if it's not open already). In this case we are going to change the alpha to make the sprite "invisible" at the start of the room. The collisions are solid and look better, and there is a certain skill required by the player to avoid the enemies while shooting. Right now everything is looking very empty, so lets get started making our game. Now, this isnt much of a challenge: the red box isnt very big, and its easy to avoid. In this It's worth noting that the resource tree is considered to be dockedto the side of the window, and it can be opened or closed using the dock buttons: and it can also be moved to a different screen position and docked there (for example on the left): GameMaker Studio 2 is fully customisable, so you can change the colours and fonts, or even set window layouts and save them. With help from Career Karma, you can find a training program that meets your needs and will set you up for a long-term, well-paid career in tech. Click Just before we continue, it's worth noting that the Draw Events other than the general drawing, will notaffect the instance default drawing, so that you can, for example, have no general Draw Event but have a Draw End Eventand the instance will still default draw the sprite andwhatever you have added into the Draw End Event. If you set this in the room editor you won't see anything happen, but in your game it will scroll. download it here With that done you should have a full set of actions that looks like this: You could drop this instance into the game room, but all you'd see would be a "0" on the screen since we don't actually add to the score value yet, so let's do that now. While you've been testing your game, you may have noticed that the bullets don't often actually appear to hit the enemies when they disappear yet the hit is being registered, and the bullet is disappearing and the enemy "hp" is being affected. Note that if we hadn't flagged the "relative" check-box, then we would be settingx to 4 rather than adding to it, and if we'd used -4 instead of 4, then we would have been subtracting4 from x. You don't even have to worry about placing it properly because we've taken care of that in the Create Event of the object. F5 The actions will be like this: Let's just go through the actions here one at a time so you can see what is happening: So, if there is an instance of the player, we then tell the enemy to move at the speed of the "spd" variable towards it. Naming Practices That means the player character you created is actually a prefab or a class that can have multiple identical copies called instances. Note that the assign variable action is placed to the right to indicate that it is only being run if the conditional check is true, and that this is also reflected in the action list on the left, where the assign variable entry has been tabbed too. We will do this a little later on in the tutorial, so don't worry about it just now and we'll just use the "Instances" layer to start with. ) and move the instance with the arrow keys: We are almost finished this tutorial, but there is one final thing we want to happen with our player instance We need to make it rotate to always face the mouse while it is being moved around the screen. This is the output we expect at the end of our automation. Every game needs sprites, so take yours and drop them into the Sprites folder. You can actually delete this and type in any text to get a preview of how it will look in the game. we are going to dedicate to adding some sound to our game. To get started with GameMaker Studio 2, first create a new project. By default this is set to 30, meaning that our game will perform a game frame (loop through all the game code) 30 times every second and in each single frame of the game code you have Events. Instances are copies of the initial object placed within the game room. spr_player About us: Career Karma is a platform designed to help job seekers find, research, and connect with job training programs to advance their careers. Well, not yet but it will be when we make our player instance actually do something. . We now need to add the action Set Instance Scale(from the Instanceslibrary) into the Create Eventof the object. For that we need to add a Key Up Event. This makes GameMaker ideal not only for beginners but also artists and designers that want to build games without learning to code. Before we end this tutorial, let's quickly add in a collision for the player colliding with the enemy. section This will only run once, and well use it to establish a global variable. near the size button. . Learn about GameMaker Studio and make your first platform game! While normally proprietary languages are a bad thing, GML is really close to JavaScript as its dynamically typed and high level. Quick tip: if ever youre looking for information or help online, make sure you search for GameMaker Studio DND. This short hand will ensure you get information relating to the drag and drop version, rather than GameMaker Language (GML). The code we just wrote will constantly check if youre pressing the left arrow key on your keyboard. To create the object, right click Your character should be able to move left now. In our Step Eventaction workspace, we need to add the following action at the end of the current list, if mouse down(from the Mouse And Keyboardaction library): This action functions just like the if keyboard downaction and performs a conditional check to see if the left mouse button is being held down (remember, "if" conditionals check for a true or a false return value) and the subsequent blocks we add will be within this conditional and should only be run if the conditional returns true - essentially, the mouse button is being held down so do something. This means that the action is going to work on a different object (in this case we have selected obj_scoreas the object to target). We only need to set the key that is being checked now, so change the "vk_space" value for "vk_right" (the "vk_" variables are special built-in constantsthat are used to signify different keyboard keys). at the players feet. We have covered all the basics that you need to know to get yourself started making games, and we've given you a base game to work on and try to change or add to. So, the player shoots an enemy and "kills" it and the game will award them a certain number of "points" which we'll add to their score. So we can't write: That code will subtract 1 from ANY of the instances of "obj_enemy" in the room, and so is best used when we know that there is only one unique instance to be accessed. As with the sprite, we talked about how to create objects in the previous tutorial, so we'll only quickly run down how to do it here: Our new object will have the Eventswindow chained to it and ready for us to add some code into, but firstwe are going to go back to out player object and edit that a bit. The next action sets the alarm [0] to the value of spawn_rate. You can delete it, and you can edit it, and you can create further rooms using the right button After completing this Make sure to tick relative so that these positions are relative to the player object. from the resource tree into the room. That square is in the top left but is shunted 32 pixels to the right. . 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.
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