GameMaker 'Drawing' in game

[InquiziBruh]

I want to make a game that lets the player 'draw' things in game, using the mouse as a sort of brush, with an adjustable radius for size. I want the object the player draws to then have a collisions on it and count as an object with its own code. Does anyone know what the best way to do this is?

 

[Kawai_Oppai]

Most likely you will use surfaces.

https://docs.yoyogames.com/source/dadiospice/002_reference/surfaces/index.html

 

[NightFrost]

The main points would be:

• Create a surface identical to draw area size.
• When user draws with mouse, draw it to the surface and copy the surface to application surface so user can see the results.
• When draw is finished, either A) cut the empty surroundings programmatically or B) simply require that user draws a rectangle around the area that will be used.
• Turn the selected region into a sprite. This will create a new texture page, as usual.
• Create a collision mask for the sprite (sprite_collision_mask).
  
• Assign the created sprite to an instance that needs it.

 

[Yal]

I want the object the player draws to then have a collisions on it and count as an object with its own code

Save a list of all shapes the player places down, then loop through them and use collision functions? Surfaces are good, but I'm not sure if there's any good way to get a collision mask for them. Lists and loops, however, always work