Function hasObstructionsTooNear

src/OpenLoco/src/Map/TreeElement.cpp:81–124

0x004BD64A

    // 0x004BD64A
    static bool hasObstructionsTooNear(World::Pos2 loc, uint8_t quadrant, uint8_t baseZ, uint8_t clearZ)
    {
        const auto topLeft = loc + World::kOffsets[quadrant] / 2 - World::Pos2{ 16, 16 };
        auto pos = topLeft;
        bool noTrees = false;
        for (auto i = 0; i < 3; ++i)
        {
            for (auto j = 0; j < 3; ++j)
            {
                auto checkPos = pos;
                QuarterTile qt(0, 0);
                if (pos.x & 0x1F)
                {
                    checkPos.x &= ~0x1F;
                    qt = World::QuarterTile(1U << 1, 0b1111);
                    if (pos.y & 0x1F)
                    {
                        checkPos.y &= ~0x1F;
                        qt = World::QuarterTile(1U << 0, 0b1111);
                    }
                }
                else
                {
                    qt = World::QuarterTile(1U << 2, 0b1111);
                    if (pos.y & 0x1F)
                    {
                        checkPos.y &= ~0x1F;
                        qt = World::QuarterTile(1U << 3, 0b1111);
                    }
                }

                auto clearFunc = [&noTrees](World::TileElement& el) -> TileClearance::ClearFuncResult {
                    return clearFunction(el, noTrees);
                };

                TileClearance::applyClearAtStandardHeight(checkPos, baseZ, clearZ, qt, clearFunc);
                pos.x += 16;
            }

            pos.x = topLeft.x;
            pos.y += 16;
        }
        return noTrees;
    }

    static void killTree(TreeElement& elTree)
    {