Procedural animated texture generation/Water

Still water

Adapted from https://github.com/UnknownShadow200/ClassiCube/wiki/MInecraft-Classic-lava-animation-algorithm#water

Every frame, for each position in the still water texture array, the respective values for soup_heat, pot_heat and flame_heat are calculated as detailed below:

• Calculates a local_soup_heat equal to the sum of the 3x1 soup_heat neighborhood around the current element.
• Calculates the new soup_heat as the sum of the local_soup_heat divided by 3.3F plus the pot_heat times 0.8F
• Calculates the new pot_heat as the current pot_heat plus the flame_heat times 0.05. pot_heat is clamped to a minimum of 0.
• Calculates the new flame_heat as the current flame_heat minus 0.1F.
  • However, there is a 0.05 in 1 random chance that flame_heat is set to 0.5.

Once the above arrays have been updated, for each pixel in the water texture, the color and alpha values are calculated based on soup_heat:

• Calculates a color_heat as the soup_heat clamped between 0 and 1 inclusive.
• Then it calculates the color components of the pixel as follows:
  • float red = 32 + color_heat^2 * 32
  • float green = 50 + color_heat^2 * 64
  • float blue = 255
  • float alpha = 146 + color_heat^2 * 50

The red, green and blue values are then converted to bytes and assigned to the texture accordingly.

Flowing water

This section is missing information about:

• how the flowing texture was generated - presumably similarly to still water
• how it was generated before late infdev added the translational aspect

 

Please expand the section to include this information. Further details may exist on the talk page.

In addition, the flowing water texture also uses a spatial translation to give the appearance of movement. This transformation moves the flowing water texture downwards by one pixel after a fixed amount of time,​^{[more information needed]} wrapping the bottom layer of the texture back to the top.