spritesheets / animation

finally … spritesheet support

spritesheets

added a new SpriteSheetComponent with:

• texture
• rows / columns
• optional row + column spacing
• start frame
• animation length
• FPS
• looping
• playing / paused state
• current frame

basically the renderer can now render only a specific UV region of a texture

animation

also added a small sprite animation system that advances frames based on FPS and handles looping / stopping at the end etc etc

animations also update while in the editor… might be annoying for some, might be less annoying for others.. but thats how i like it

editor stuff

you can pick the texture, set rows / columns and spacing, choose the start frame + animation length, change FPS, toggle looping / playback, scrub the current frame, restart the animation, etc. etc

EngineLib

scripts can inspect stuff like the current frame, frame count, FPS, rows / columns and texture, and can also change the texture/grid/animation, set frames, play, pause, restart and stop animations.

Collider also has a proper EngineLib component wrapper instead of collision only being accessible through the callback hooks. right now that’s just getting / setting whether it’s a trigger, but it’s there.

also added both Collider and SpriteSheet to the normal GetComponent, AddComponent, RemoveComponent, HasComponent, etc. obviously.

some cleanup

did a bit of registry / EngineLib locking cleanup while I was in there too, mostly around entity wrappers being created while the registry lock is already held.

also fixed one very stupid collision callback typo where on_collision_stay was looking up the wrong hook… oops…..

im also starting on documenting this stuff…. yep.. pain…

spritesheet used in video attached for testing is : https://opengameart.org/content/animated-butterfly