61 lines
1.8 KiB
Zig
61 lines
1.8 KiB
Zig
const Grid = @import("grid.zig");
|
|
const Piece = @import("piece.zig");
|
|
|
|
pub fn moveRight(grid: Grid, piece: Piece) Piece {
|
|
var new_piece = piece;
|
|
new_piece.col += 1;
|
|
if (checkCollision(grid, new_piece)) {
|
|
return piece;
|
|
} else {
|
|
return new_piece;
|
|
}
|
|
}
|
|
|
|
pub fn moveLeft(grid: Grid, piece: Piece) Piece {
|
|
var new_piece = piece;
|
|
new_piece.col -= 1;
|
|
if (checkCollision(grid, new_piece)) {
|
|
return piece;
|
|
} else {
|
|
return new_piece;
|
|
}
|
|
}
|
|
|
|
pub fn moveDown(grid: Grid, piece: Piece) Piece {
|
|
var new_piece = piece;
|
|
new_piece.row += 1;
|
|
if (checkCollision(grid, new_piece)) {
|
|
new_piece.row -= 1;
|
|
new_piece.dropped = true;
|
|
return new_piece;
|
|
} else {
|
|
return new_piece;
|
|
}
|
|
}
|
|
|
|
pub fn drop(grid: Grid, piece: Piece) Grid {
|
|
var new_grid = grid;
|
|
|
|
for (piece.structure) |_, y| {
|
|
for (piece.structure[y]) |_, x| {
|
|
if (piece.structure[y][x]) {
|
|
new_grid.cells[@intCast(usize, piece.row + @intCast(i32, y))][@intCast(usize, piece.col + @intCast(i32, x))].free = false;
|
|
new_grid.cells[@intCast(usize, piece.row + @intCast(i32, y))][@intCast(usize, piece.col + @intCast(i32, x))].color = piece.color;
|
|
}
|
|
}
|
|
}
|
|
|
|
return new_grid;
|
|
}
|
|
|
|
fn checkCollision(grid: Grid, piece: Piece) bool {
|
|
for (piece.structure) |_, y| {
|
|
for (piece.structure[y]) |_, x| {
|
|
if (piece.structure[y][x] and ((@intCast(i32, x) + piece.col > Grid.ncolumns - 1) or (@intCast(i32, x) + piece.col < 0) or (@intCast(i32, y) + piece.row > Grid.nrows - 1) or (!grid.cells[@intCast(usize, piece.row + @intCast(i32, y))][@intCast(usize, piece.col + @intCast(i32, x))].free))) {
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
return false;
|
|
}
|