Spawns sand particles from the player's sand inventory. Used by Duster.
Arguments
- zerog_xoffset (int)
X offset in map pixels of pixel spawn zone used when sand gravity is 0
- zerog_yoffset (int)
Y offset in map pixels of pixel spawn zone used when sand gravity is 0
- zerog_width (int)
Width in map pixels of pixel spawn zone used when sand gravity is 0
- zerog_height (int)
Height in map pixels of pixel spawn zone used when sand gravity is 0