98 lines
2.0 KiB
Go
98 lines
2.0 KiB
Go
package freego
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import "errors"
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//Board represents main game board
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type Board struct {
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board [][]*Tile
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size int
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}
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//NewBoard creates a new board instance
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func NewBoard(size int) *Board {
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if size < 4 || size%2 != 0 {
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return nil
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}
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b := make([][]*Tile, size)
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var colour Colour
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for i := 0; i < size; i++ {
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b[i] = make([]*Tile, size)
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if i < size/2 {
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colour = Blue
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} else {
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colour = Red
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}
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for j := 0; j < size; j++ {
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b[i][j] = &Tile{i, j, true, nil, colour}
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}
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}
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return &Board{
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board: b,
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size: size,
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}
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}
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func (b *Board) validatePoint(x, y int) bool {
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if x < 0 || x >= len(b.board) {
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return false
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}
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if y < 0 || y >= len(b.board) {
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return false
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}
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return true
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}
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//GetPiece returns the piece at a given location
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func (b *Board) GetPiece(x, y int) (*Piece, error) {
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if !b.validatePoint(x, y) {
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return nil, errors.New("GetPiece invalid location")
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}
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return b.board[y][x].Piece(), nil
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}
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//Place a piece on the board; returns false if a piece is already there
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func (b *Board) Place(x, y int, p *Piece) (bool, error) {
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if !b.validatePoint(x, y) {
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return false, errors.New("Place invalid location")
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}
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if b.board[y][x].Piece() != nil {
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return false, nil
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}
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err := b.board[y][x].Place(p)
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if err != nil {
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return false, err
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}
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return true, nil
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}
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//Remove a piece from a tile
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func (b *Board) Remove(x, y int) error {
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if !b.validatePoint(x, y) {
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return errors.New("Remove invalid location")
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}
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b.board[y][x].Remove()
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return nil
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}
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//GetColor returns color of tile
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func (b *Board) GetColor(x, y int) Colour {
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return b.board[y][x].Colour()
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}
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//AddTerrain puts a river tile at specified location
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func (b *Board) AddTerrain(x, y, t int) (bool, error) {
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if !b.validatePoint(x, y) {
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return false, errors.New("River invalid location")
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}
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b.board[y][x].AddTerrain(t)
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return true, nil
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}
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//IsTerrain checks if tile is terrain
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func (b *Board) IsTerrain(x, y int) (bool, error) {
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if !b.validatePoint(x, y) {
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return false, errors.New("River check invalid location")
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}
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return !b.board[y][x].passable, nil
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}
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