// Input handles user input.
func Input(win wde.Window, g *grid.Grid, render chan bool) {
// turnB keeps track of whose turn it is. When true, it's player B's turn.
var turnB bool
// When end is true the game has ended.
var end bool
// mde handles mouse down events.
mde := func(e wde.MouseDownEvent) {
if e.Which == wde.LeftButton {
// Left click places a marker.
if end {
// Game has already ended.
return
}
// Translate pixel location to grid coordinate.
col, row, err := screenToCoord(g, e.Where.X, e.Where.Y)
if err != nil {
///log.Println(err)
return
}
// Place marker.
player := markA
if turnB {
player = markB
}
err = g.Place(col, row, player)
if err != nil {
///log.Println(err)
return
}
turnB = !turnB
render <- true
// Check if the game has ended.
end = true
markWin := g.Check()
if markWin != grid.MarkNone {
fmt.Printf("===> %q wins :)\n", markWin)
return
}
loop:
for col := 0; col < g.Width(); col++ {
for row := 0; row < g.Height(); row++ {
if g[col][row] == grid.MarkNone {
end = false
break loop
}
}
}
if end {
fmt.Println("===> no winner :(")
}
} else if e.Which == wde.MiddleButton {
// Middle click clears the grid.
g.Clear()
turnB = false
end = false
render <- true
}
}
for e := range win.EventChan() {
switch v := e.(type) {
case wde.CloseEvent:
return
case wde.MouseDownEvent:
mde(v)
}
}
}
