Function IsSpriteInteractedWithPaletteSet

src/openrct2/interface/Viewport.cpp:1544–1604

* rct2: 0x00679074 */

     * rct2: 0x00679074
     */
    static bool IsSpriteInteractedWithPaletteSet(
        RenderTarget& rt, ImageId imageId, const ScreenCoordsXY& coords, const PaletteMap& paletteMap, const uint8_t imageType)
    {
        PROFILED_FUNCTION();

        const G1Element* g1 = GfxGetG1Element(imageId);
        if (g1 == nullptr)
        {
            return false;
        }

        ZoomLevel zoomLevel = rt.zoom_level;
        ScreenCoordsXY interactionPoint{ rt.WorldX(), rt.WorldY() };
        ScreenCoordsXY origin = coords;

        if (rt.zoom_level > ZoomLevel{ 0 })
        {
            if (g1->flags.has(G1Flag::noZoomDraw))
            {
                return false;
            }

            while (g1->flags.has(G1Flag::hasZoomSprite) && zoomLevel > ZoomLevel{ 0 })
            {
                imageId = imageId.WithIndex(imageId.GetIndex() - g1->zoomedOffset);
                g1 = GfxGetG1Element(imageId);
                if (g1 == nullptr || g1->flags.has(G1Flag::noZoomDraw))
                {
                    return false;
                }
                zoomLevel = zoomLevel - 1;
                interactionPoint.x >>= 1;
                interactionPoint.y >>= 1;
                origin.x >>= 1;
                origin.y >>= 1;
            }
        }

        origin.x += g1->xOffset;
        origin.y += g1->yOffset;
        interactionPoint -= origin;

        if (interactionPoint.x < 0 || interactionPoint.y < 0 || interactionPoint.x >= g1->width
            || interactionPoint.y >= g1->height)
        {
            return false;
        }

        if (g1->flags.has(G1Flag::hasRLECompression))
        {
            return IsPixelPresentRLE(g1->offset, interactionPoint.x, interactionPoint.y);
        }

        if (!g1->flags.has(G1Flag::one))
        {
            return IsPixelPresentBMP(imageType, g1, interactionPoint.x, interactionPoint.y, paletteMap);
        }