Using custom sprites in WAVESHAPER
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Place the images in the Sprites folder, named exactly like this:
spr_triangle_up_1.png
spr_triangle_down_2.png
spr_square_up_3.png
spr_square_down_4.png

The images used should be 32x32 and bright enough that they don't blend into the black background.

Once the images are in the folder, you need to enable "Sprite Mode" and "Custom Sprites" in the in-game options menu.
To revert back to default obstacles, just toggle "Custom Sprites" back to off.

