Method prepareBuildingSite

MicropolisCore/src/MicropolisEngine/src/tool.cpp:649–689

* Prepare the site where a building is about to be put down. * * This function performs some basic sanity checks, and implements the * auto-bulldoze functionality to prepare the site. * All effects are stored in the \a effects object. * * @param leftX Position of left column of tiles of the building. * @param topY Position of top row of tiles of the building. * @param sizeX Horiz

 * @return: Result of preparation.
 */
ToolResult Micropolis::prepareBuildingSite(int leftX, int topY,
                                           int sizeX, int sizeY,
                                           ToolEffects *effects)
{
    // Check that the entire site is on the map
    if (leftX < 0 || leftX + sizeX > WORLD_W) {
        return TOOLRESULT_FAILED;
    }
    if (topY < 0 || topY + sizeY > WORLD_H) {
        return TOOLRESULT_FAILED;
    }

    // Check whether the tiles are clear
    for (int dy = 0; dy < sizeY; dy++) {
        int posY = topY + dy;

        for (int dx = 0; dx < sizeX; dx++) {
            int posX = leftX + dx;

            unsigned short tileValue = effects->getMapTile(posX, posY);

            if (tileValue == DIRT) { // DIRT tile is buidable
                continue;
            }

            if (!autoBulldoze) {
                // No DIRT and no bull-dozer => not buildable
                return TOOLRESULT_NEED_BULLDOZE;
            }
            if (!tally(tileValue)) {
                // tilevalue cannot be auto-bulldozed
                return TOOLRESULT_NEED_BULLDOZE;
            }

            effects->setMapValue(posX, posY, DIRT);
            effects->addCost(gCostOf[TOOL_BULLDOZER]);
        }
    }

    return TOOLRESULT_OK;
}


/**