Football4 Docs
Fall 2025
API

# Match

o1.football4.Match
class Match(val `home`: Club, val `away`: Club, val `homeScorers`: Vector[Player], val `awayScorers`: Vector[Player])

Each object of the class `Match` represents a state of a football match. A match is played between teams from two clubs: a home club and an away club. Goals scored by players of either team can be added to the match object with the method `addGoal`, which produces a new `Match` object representing the updated state of the match. Each `Match` object is immutable.

## Parameters

away

  the club whose team plays away in the match

awayScorers

  the players who have scored goals for the away team so far (in order for each goal; the same player appears multiple times if they have scored multiple goals)

home

  the club whose team plays at home in the match

homeScorers

  the players who have scored goals for the home team so far (in order for each goal; the same player appears multiple times if they have scored multiple goals)

## Attributes

Graph
Supertypes
  class Object
  trait Matchable
  class Any

## Members list

### Value members

#### Concrete methods

def addGoal(`scorer`: Player): Match

Records a goal as having been scored by the given player and produces a match object that represents the updated state of the match. This assumes that the given player plays for one of the participating clubs; if not, this method simply returns unmodified match object itself.

Records a goal as having been scored by the given player and produces a match object that represents the updated state of the match. This assumes that the given player plays for one of the participating clubs; if not, this method simply returns unmodified match object itself.

## Parameters

scorer

  the goalscoring player (who scores the goal for his or her own team)

## Attributes

Returns

  a new match object that is otherwise the same as this one, but has one more goal

def allScorers: Vector[Player]

Returns a vector that contains all the players who scored in the match. In the vector, all the players who scored for the home team appear (in the order in which they scored) before the players who scored for the away team (also in scoring order amongst themselves). A player will appear in the vector as many times as they scored.

Returns a vector that contains all the players who scored in the match. In the vector, all the players who scored for the home team appear (in the order in which they scored) before the players who scored for the away team (also in scoring order amongst themselves). A player will appear in the vector as many times as they scored.

## Attributes

def awayGoals: Int

Returns the number of goals that have been scored (so far) by the away team.

Returns the number of goals that have been scored (so far) by the away team.

## Attributes

def goalDifference: Int

Returns the goal difference of the match. The sign of the number indicates which team scored more goals.

Returns the goal difference of the match. The sign of the number indicates which team scored more goals.

## Attributes

Returns

  the goal difference as a positive number if the home team won, a negative number if the away team won, or zero if of a tied match

def hasScorer(`possibleScorer`: Player): Boolean

Returns a Boolean value indicating whether the given player scored in this match.

Returns a Boolean value indicating whether the given player scored in this match.

## Attributes

def homeGoals: Int

Returns the number of goals that have been scored (so far) by the home team.

Returns the number of goals that have been scored (so far) by the home team.

## Attributes

def isAwayWin: Boolean

Returns a Boolean value indicating whether the away team won (or would win if the match ended with the current score). Tied scores produce `false`.

Returns a Boolean value indicating whether the away team won (or would win if the match ended with the current score). Tied scores produce `false`.

## Attributes

def isGoalless: Boolean

Determines whether this match is entirely goalless, that is, whether neither team has scored a single goal.

Determines whether this match is entirely goalless, that is, whether neither team has scored a single goal.

## Attributes

def isHigherScoringThan(`anotherMatch`: Match): Boolean

Determines whether this match has a higher total score than another given match.

Determines whether this match has a higher total score than another given match.

## Attributes

Returns

  `true` if more goals were scored in total in this match than in the given match, `false` otherwise

def isHomeWin: Boolean

Returns a Boolean value indicating whether the home team won (or would win if the match ended with the current score). Tied scores produce `false`.

Returns a Boolean value indicating whether the home team won (or would win if the match ended with the current score). Tied scores produce `false`.

## Attributes

def isTied: Boolean

Returns a Boolean value indicating whether the game ended in a draw (or would do so if the match ended with the current score).

Returns a Boolean value indicating whether the game ended in a draw (or would do so if the match ended with the current score).

## Attributes

def location: String

Returns the name of the stadium where the match is played. That is, returns the name of the home team’s stadium.

Returns the name of the stadium where the match is played. That is, returns the name of the home team’s stadium.

## Attributes

override def toString: String

Produces a textual description of the match’s current state, in a format illustrated by the examples below. In these examples, `Liverpool` is the name of the home team, `Everton` the name of the away team, and `Anfield` the name of the home team’s stadium.

Produces a textual description of the match’s current state, in a format illustrated by the examples below. In these examples, `Liverpool` is the name of the home team, `Everton` the name of the away team, and `Anfield` the name of the home team’s stadium.

Goalless draw (no goals for either side):

    Liverpool vs. Everton at Anfield: tied at nil-nil

Other tied score (e.g., 2–2):

    Liverpool vs. Everton at Anfield: tied at 2-all

Home score higher (e.g., 4–0):

    Liverpool vs. Everton at Anfield: 4-0 to Liverpool

Away score higher (e.g., 2–4):

    Liverpool vs. Everton at Anfield: 4-2 to Everton

Note that although the name of the home team is always listed first, but the leader’s score is shown first, even if the away team is leading.

## Attributes

Definition Classes
  Any

def totalGoals: Int

Returns the total number of goals scored by the two teams.

Returns the total number of goals scored by the two teams.

## Attributes

def winner: Option[Club]

Returns the club whose team won the match (or is about to win it, assuming the current result stands). That is, returns the club who has scored more goals than the other one. The club is wrapped in an `Option`; `None` is returned if the game is tied.

Returns the club whose team won the match (or is about to win it, assuming the current result stands). That is, returns the club who has scored more goals than the other one. The club is wrapped in an `Option`; `None` is returned if the game is tied.

## Attributes

def winnerName: String

Returns the name of the club whose team won the match (or is about to win it, assuming the current result stands). If the game is tied, returns the string "no winner".

Returns the name of the club whose team won the match (or is about to win it, assuming the current result stands). If the game is tied, returns the string "no winner".

## Attributes

def winningScorer: Option[Player]

Returns the player who scored the so-called “winning goal”. The winning goal of a match is the earliest goal for the winning team that is “necessary for the win” in the light of the scoreline.

Returns the player who scored the so-called “winning goal”. The winning goal of a match is the earliest goal for the winning team that is “necessary for the win” in the light of the scoreline.

For instance, if the score is 4–2 to the home team, then the third goal scored by the home team is the winning goal, because the winning team needed to score at least three goals to beat the losing team’s score of two.

More examples: if the losing team has scored 0 goals, the winning goal is the winning team’s first goal; if the losing team has scored 1 goal, the winning goal is the winning team’s second goal; and so on. In other words, if the losing team has scored X goals, the winning goal is the (X+1)th goal scored by the winning team.

If scores are even, there is no winning goal or winning-goal scorer.

## Attributes

Returns

  the scorer of the winning goal, wrapped in an `Option`; `None` if there is no winning goal

#### Concrete fields

val away: Club
val awayScorers: Vector[Player]
val home: Club
val homeScorers: Vector[Player]