To draw than bitmap sprites and this speed difference increases as the complexity of the animation being imported increases.
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However, nothing is ever for free when it comes to programming games, and the tradeoff here with vector sprites is that they are more CPU expensive To help you visualise how this is done, the image below is of the same vector Fireman sprite only now we can see the polygons thatĪre used to make the image within GameMaker Studio 2: Vector sprites work around these limitationsīy storing and drawing their contents differently: instead of a grid of pixels, which can become blocky or fuzzy when scaled, they are drawn as triangles using vector maths and these can be scaled up (or down) without losing definition, as illustrated
Generally all sprites in GameMaker use bitmaps which - while flexible in terms of content - place limitations on both the size and number of frames possible in a sprite before memory usage can become prohibitive. Apart from these functions and variables, you can also set and change animation properties using special skeleton_* functions, which are listed and explained in the reference section on Skeletal Animations. However the basic sprite drawing functions are fully supported as are the built in sprite variables. There are a number of things that you should be aware of when importing skeleton animation sprites, with the most important being that some of the sprite drawing and sprite management functions are not supported for technical reasons, particularly thoseĭraw functions that draw only part of a sprite, or that "skew" the position in some way (see the individual draw_sprite_*() functionsįor exact details of which).
You also cannot set any of the texture options for the sprite, as GameMaker will use the supplied texture atlas that was made by the program that generated the sprite. Unlike bitmap sprites, the imported skeletal animation sprite cannot be modified in the editor in any way, but there are a number of functions available within the GameMaker Language (GML) which can be used to change skins, set properties,Īnd control other aspects of the animation. NOTE: Due to the complexity of skeletal animations, the preview image shown in the sprite editor is not intended to accurately represent your animation, but rather give you a simple image that represents the animation for visualising You simply won't get working collisions if the masks are not set correctly in the program used to create the image being imported. GameMaker Studio 2 does not generate any collision mask if the data is missing from imported file, meaning Precise collisions or bounding box collisions, and that the collision data for a skeletal animation is explicitly taken from the data provided.
Once you have imported the animation, you can set the collision properties, but note that you are limited here to simply using When processing has finished you'll be returned to the sprite properties dialogue, which will now look like this: Of the file, this may take a moment or two. Hitting the "load" button will add the skeletal animation to the Asset Browser as a sprite, with a progress bar being shown as the file is processed. Here you need to make sure that you have selected *.json from the file filter at the bottom: To add a skeletal animation, you need to create a new sprite, which will bring up the standard Load Sprite dialogue, only However the way to import them into the program is almost identical to that for adding a normal bitmap image. GameMaker Studio 2 permits you to import this type of sprite as long as it has been exported as a *.json format file and has theĬorrectly associated texture atlas file ( *.atlas) and image file (as a *.png) in the same directory.Ĭurrently GameMaker Studio 2 can only import vector images from JSON format files made by the program Spine, This skeleton is then skinned from a texture atlas and the resulting animation exported in one of many file types.
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Both these formats have their pros and cons, and the two sections below explain how to import them into the Sprite Editor as well as a bit of information about how they are drawn.Ī sprite made using skeletal animation, is one in which a base "skeleton" has been created and animated using key-frames to move the component parts of the skeleton over time. GameMaker Studio 2 has support for non- bitmap sprites in the form of vector SWF files or Spine Skeletal Animation files.
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