Basically, the display buffer is what things in your game are drawn to, and to start with it's usually cleared with a colour (black), and then the application surface and GUI etc.
If the player then goes back to that room, there will only be 60 enemies, since the room has persisted within the game. For example, say you have a persistent room with 100 enemies and the player kills 40 before going to the exit and into another room. But what is a persistent room? Well, you can see a checkbox for it in the properties window, and ticking it makes the room persist its last state when it was exited.
GAMEMAKER STUDIO 2 ROOM SPEED CODE
Persistent: If the room is classed as persistent then this code will only be run the first time the room is entered, unless persistence is turned off through code.Beneath the "Inherit" button you can set the room to persistent and set whether you want the back buffer to be cleared every step of the game or not:
This means that you only have to set up, for example, a tile layer once in the parent room, and then all child layers will get it too. We'll talk more about inheritance later in this tutorial, but basically you can create parent and child rooms and have child rooms inherit properties from the parent. This panel is where you can set the room width and height, in pixels, as well as a whether it should inherit the properties of a parent room. This can all be a bit daunting to look at to start with, so we'll look at the main sections one at a time starting with the Room Properties: When you double click on this resource from the resource tree, it will open the Room Editor Workspace, with a number of tools and sections for you to use to design your game levels. Now lets actually set up a room!īy default GameMaker Studio 2 will always create an empty room for you whenever you start a project, since all games require at least one room to run. So, setting the game speed first is important as it will affect how everything you place in the game rooms looks and works, and changing it later because you've made a mistake can be problematic. You can have instances with movement, animated tile sets, animated sprite assets, and a great many other things in your game room and they all depend on the game speed to tell them at what time to perform their actions and change frame, etc. Also note that a higher fps will mean that the target platform will have to work harder, so you need to balance this with the amount of processing you do in your game - a fps of 120 will make everything happen twice as frequently as a fps of 60, meaning twice the workload for the platform processor. If you have too much happening or the game is poorly optimised, then the fps can go down causing your game to lag, although it will not ever go over the given fps. Note that this is not a fixed value, and is simply the frame rate that you want the game to try to maintain. You can set this value to whatever feels right for your game, with 30, 40 and 60 being the most common fps that people choose. This means that the game loop will tick over 30 times (frames) in one second, so, for example, if you have an instance that is drawing an animated sprite, the sprite will show 30 frames in one second - assuming the animation speed is also set to 30 in the image editor - or if you have an enemy object that has to run AI code in the Step Event, it will run its code 30 times in a second. In the image above the default value is shown which is 30 Frames per second (fps). The game speed is calculated as Game Frames Per Second, and can be set from the project Options window (click on the Options button to open):
GAMEMAKER STUDIO 2 ROOM SPEED MANUAL
When you finish you can always press to open the manual and get more information.īefore actually opening a room, we'll first talk about Game Speed as this will affect everything about your game and should be set at the start. The room editor has a great many tools for you to use and has some quite advanced functionality to let you create your games how you want to, and in this tutorial we will cover the essential aspects that you need to know to get started, and simply give a brief overview of the more advanced aspects. However you are not limited to one room and can have as many as you require to bring your project to life. No matter how many sprites, objects or other resources you create, your game will not run unless it has at least one room, which is why all new projects are created with a room by default. This tutorial explores arguably the most important tool that GameMaker Studio 2 has to offer.
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