(This commit is multiple commits squashed together, to make rebasing and merging easier. Many of the commits undid or slightly altered previous changes.)
This Extends the land-tool by allowing the player to select an edge of a surface tile, and to select a row of tiles. Both work by holding down the Ctrl key (same key for keeping the same base-height for other tools). When using a single-sized tool, the selection will become the edge, and when using a selection area of 2x2 or higher, the selection becomes a row of tiles.
The tables `tile_element_raise_styles` and `tile_element_lower_styles` hold the data for how slopes should change when a tile gets raised or lowered with the land tool. Each row represents a selection, and each column the slope type.
Co-authored-by: Adam T <32143337+Despotico@users.noreply.github.com>
`memset` takes an integer as argument which gets converted to an unsigned byte. `SPRITE_INDEX_NULL` has a value of 0xFFFF, essentially cutting it to 0xFF. Calling `std::fill_n` instead of `memcpy` assigns the given value to each element in its range rather than setting the bytes. In this case, the result is the same.
None of the other calls to `memset` in the project use values bigger than 0xFF.
By default enumerators use type `int` which can store values up to `1 << 31 - 1`. The clang compiler generates this error for enums values that use the sign bit: `enumerator value is not representable in the underlying type 'int'.`
To get rid of those warnings (and technically improve the code) the erroneous enums are now of type of `uint32`.
Note: I've skipped peep.h to prevent conflicts with the peep refactor branch.
