In the heightmap editor, it would be beneficial to have a checkbox for changing only ocean tiles. When activated, any changed in cell height will be limited to cells of height 19 or lower, with any changes not having effect on cells above that height. (Basically, if you try to raise the height of a size 19 cell, it will not change it until the checkbox is deselected). This way, you can focus solely on changing ocean heights in the heightmap editor while not changing land heights and not accidentally making new landmasses.
A possible alternative is to add more customization ability to the if statements to potentially check bordering cell heights, though this would likely be harder to implement than a checkbox.
In the heightmap editor, it would be beneficial to have a checkbox for changing only ocean tiles. When activated, any changed in cell height will be limited to cells of height 19 or lower, with any changes not having effect on cells above that height. (Basically, if you try to raise the height of a size 19 cell, it will not change it until the checkbox is deselected). This way, you can focus solely on changing ocean heights in the heightmap editor while not changing land heights and not accidentally making new landmasses.
A possible alternative is to add more customization ability to the if statements to potentially check bordering cell heights, though this would likely be harder to implement than a checkbox.