Function DrawTileContent

Source/engine/render/scrollrt.cpp:924–968

* @brief Render a row of tile * @param out Output buffer * @param tilePosition dPiece coordinates * @param targetBufferPosition Buffer coordinates * @param rows Number of rows * @param columns Tile in a row */

 * @param columns Tile in a row
 */
void DrawTileContent(const Surface &out, Point tilePosition, Point targetBufferPosition, int rows, int columns)
{
	// Keep evaluating until MicroTiles can't affect screen
	rows += MicroTileLen;
	dRendered.reset();

	for (int i = 0; i < rows; i++) {
		for (int j = 0; j < columns; j++) {
			if (InDungeonBounds(tilePosition)) {
#ifdef _DEBUG
				DebugCoordsMap[tilePosition.x + tilePosition.y * MAXDUNX] = targetBufferPosition;
#endif
				if (tilePosition.x + 1 < MAXDUNX && tilePosition.y - 1 >= 0 && targetBufferPosition.x + TILE_WIDTH <= gnScreenWidth) {
					// Render objects behind walls first to prevent sprites, that are moving
					// between tiles, from poking through the walls as they exceed the tile bounds.
					// A proper fix for this would probably be to layout the sceen and render by
					// sprite screen position rather than tile position.
					if (IsWall(tilePosition) && (IsWall(tilePosition + Displacement { 1, 0 }) || (tilePosition.x > 0 && IsWall(tilePosition + Displacement { -1, 0 })))) { // Part of a wall aligned on the x-axis
						if (IsTileNotSolid(tilePosition + Displacement { 1, -1 }) && IsTileNotSolid(tilePosition + Displacement { 0, -1 })) {                              // Has walkable area behind it
							DrawDungeon(out, tilePosition + Direction::East, { targetBufferPosition.x + TILE_WIDTH, targetBufferPosition.y });
						}
					}
				}
				DrawDungeon(out, tilePosition, targetBufferPosition);
			}
			tilePosition += Direction::East;
			targetBufferPosition.x += TILE_WIDTH;
		}
		// Return to start of row
		tilePosition += Displacement(Direction::West) * columns;
		targetBufferPosition.x -= columns * TILE_WIDTH;

		// Jump to next row
		targetBufferPosition.y += TILE_HEIGHT / 2;
		if ((i & 1) != 0) {
			tilePosition.x++;
			columns--;
			targetBufferPosition.x += TILE_WIDTH / 2;
		} else {
			tilePosition.y++;
			columns++;
			targetBufferPosition.x -= TILE_WIDTH / 2;
		}
	}
}

/**
 * @brief Scale up the top left part of the buffer 2x.