OpenRCT2/src/openrct2/object/StationObject.cpp

/*****************************************************************************
 * Copyright (c) 2014-2019 OpenRCT2 developers
 *
 * For a complete list of all authors, please refer to contributors.md
 * Interested in contributing? Visit https://github.com/OpenRCT2/OpenRCT2
 *
 * OpenRCT2 is licensed under the GNU General Public License version 3.
 *****************************************************************************/

#include "StationObject.h"

#include "../core/IStream.hpp"
#include "../core/String.hpp"
#include "../drawing/Drawing.h"
#include "../localisation/Localisation.h"
#include "../world/Banner.h"
#include "ObjectJsonHelpers.h"

void StationObject::Load()
{
    GetStringTable().Sort();
    NameStringId = language_allocate_object_string(GetName());

    auto numImages = GetImageTable().GetCount();
    if (numImages != 0)
    {
        BaseImageId = gfx_object_allocate_images(GetImageTable().GetImages(), GetImageTable().GetCount());

        uint32_t shelterOffset = (Flags & STATION_OBJECT_FLAGS::IS_TRANSPARENT) ? 32 : 16;
        if (numImages > shelterOffset)
        {
            ShelterImageId = BaseImageId + shelterOffset;
        }
    }
}

void StationObject::Unload()
{
    language_free_object_string(NameStringId);
    gfx_object_free_images(BaseImageId, GetImageTable().GetCount());

    NameStringId = 0;
    BaseImageId = 0;
    ShelterImageId = 0;
}

void StationObject::DrawPreview(rct_drawpixelinfo* dpi, int32_t width, int32_t height) const
{
    int32_t x = width / 2;
    int32_t y = (height / 2) + 16;

    auto colour0 = COLOUR_LIGHT_BLUE;
    auto colour1 = COLOUR_BORDEAUX_RED;
    auto tcolour0 = GlassPaletteIds[colour0];

    uint32_t imageId = BaseImageId;
    uint32_t tImageId = BaseImageId + 16;
    if (Flags & STATION_OBJECT_FLAGS::HAS_PRIMARY_COLOUR)
    {
        imageId |= (colour0 << 19) | IMAGE_TYPE_REMAP;
        tImageId |= (GlassPaletteIds[tcolour0] << 19) | IMAGE_TYPE_TRANSPARENT;
    }
    if (Flags & STATION_OBJECT_FLAGS::HAS_SECONDARY_COLOUR)
    {
        imageId |= (colour1 << 24) | IMAGE_TYPE_REMAP_2_PLUS;
        tImageId |= (colour1 << 24) | IMAGE_TYPE_REMAP_2_PLUS;
    }

    gfx_draw_sprite(dpi, imageId + 0, x, y, 0);
    if (Flags & STATION_OBJECT_FLAGS::IS_TRANSPARENT)
    {
        gfx_draw_sprite(dpi, tImageId, x, y, 0);
    }

    gfx_draw_sprite(dpi, imageId + 4, x, y, 0);
    if (Flags & STATION_OBJECT_FLAGS::IS_TRANSPARENT)
    {
        gfx_draw_sprite(dpi, tImageId + 4, x, y, 0);
    }
}

void StationObject::ReadJson(IReadObjectContext* context, const json_t* root)
{
    auto properties = json_object_get(root, "properties");
    Height = ObjectJsonHelpers::GetInteger(properties, "height", 0);
    ScrollingMode = ObjectJsonHelpers::GetInteger(properties, "scrollingMode", SCROLLING_MODE_NONE);
    Flags = ObjectJsonHelpers::GetFlags<uint32_t>(
        properties,
        { { "hasPrimaryColour", STATION_OBJECT_FLAGS::HAS_PRIMARY_COLOUR },
          { "hasSecondaryColour", STATION_OBJECT_FLAGS::HAS_SECONDARY_COLOUR },
          { "isTransparent", STATION_OBJECT_FLAGS::IS_TRANSPARENT } });

    ObjectJsonHelpers::LoadStrings(root, GetStringTable());
    ObjectJsonHelpers::LoadImages(context, root, GetImageTable());
}