Openrct2: Doors in land textures for ghost train rides do not appear when loading SV4

[saxman1089]

In vanilla RCTLL, doors appear in the land textures when a ghost train ride passes through. In OpenRCT2, it appears that this behavior is not carried over, as the areas that are supposed to be doors are holes. See the comparison image below. I'm not sure if this can be fixed given the limitations of the SV6 file format, but I thought I would report it nonetheless.

RCTLL:

OpenRCT2:

[Gymnasiast]

I don't think it's a limitation of the SV6 format. It's just that it needs implementing too.

[IntelOrca]

@Gymnasiast It appears that you have been assigned to implement it xD

[Gymnasiast]

@IntelOrca Yes, and not completely undeserved ;-)

[saxman1089]

Good to hear that its not a limitation. I also had to copy some files over from the LL cd to my local folder to get this to work, should I file a separate issue for that?

[Ryder17z]

@saxman1089 this is basically why you can specify an RCT1 installation folder in the options menu.

[saxman1089]

@Patrik356b this was after I had specified the RCT1 installation folder. I think these files are only contained on the CD, and not copied over automatically.

[Ryder17z]

That sounds strange. Unless you didn't do a full RCT1 installation or you are running RCT1 provided by steam

[Gymnasiast]

@saxman1089 No, it is entirely expected. The CD version does not copy csg1i.dat, ever.

[Gymnasiast]

I have been able to determine where RCT1 saves the door state. For reference, this is the track element struct:

struct rct_tile_element_track_properties {
    uint8 type; //4
    union {
        struct {
            uint8 sequence; //5.
            uint8 colour; //6
        };
        uint16 maze_entry; // 5
    };
    uint8 ride_index; //7
};

It uses an 8-bit integer for colour, but only needs two 2 of those for that. The door states are saved in the other six bits, with the first door in bits 2, 3 and 4 and the second door in bits 5, 6 and 7 (counting from 0).

The door states are as follows:
0b000: door is closed
0b010: door is half open
0b011: door is fully open

The door direction is not saved, it will always open in the direction of the track. In other words, always outwards if seen from the car.

[Gymnasiast]

This is how Chione looks now (with fixed walls, added terrain surfaces and landscape doors):