124 lines
2.9 KiB
D
124 lines
2.9 KiB
D
module gumballmachine;
|
||
|
||
import std.stdio : writeln;
|
||
import std.conv : to;
|
||
import soldoutstate, noquarterstate, hasquarterstate, soldstate, state, winnerstate;
|
||
|
||
class GumballMachine
|
||
{
|
||
State soldOutState; // нет жевательных шариков
|
||
State noQuarterState; // нет четвертака (есть жевательные шарики, готов к продаже)
|
||
State hasQuarterState; // вставлен четвертак (либо купить шарик, либо вернуть моентку)
|
||
State soldState; // продажа шарика (выдача шарика)
|
||
State winnerState; // выдача дополнительного шарика при 10% вероятности
|
||
|
||
State state;
|
||
int count = 0;
|
||
|
||
this(int numberGumballs)
|
||
{
|
||
soldOutState = new SoldOutState(this);
|
||
noQuarterState = new NoQuarterState(this);
|
||
hasQuarterState = new HasQuarterState(this);
|
||
soldState = new SoldState(this);
|
||
winnerState = new WinnerState(this);
|
||
|
||
this.count = numberGumballs;
|
||
if (numberGumballs > 0)
|
||
{
|
||
state = noQuarterState;
|
||
}
|
||
else
|
||
{
|
||
state = soldOutState;
|
||
}
|
||
}
|
||
|
||
void insertQuarter()
|
||
{
|
||
state.insertQuarter();
|
||
}
|
||
|
||
void ejectQuarter()
|
||
{
|
||
state.ejectQuarter();
|
||
}
|
||
|
||
void turnCrank()
|
||
{
|
||
state.turnCrank();
|
||
state.dispense();
|
||
}
|
||
|
||
void releaseBall()
|
||
{
|
||
writeln("Из щели выкатывается шарик жевательной резинки...");
|
||
if (count > 0)
|
||
{
|
||
count = count - 1;
|
||
}
|
||
}
|
||
|
||
int getCount()
|
||
{
|
||
return count;
|
||
}
|
||
|
||
void refill(int count)
|
||
{
|
||
this.count += count;
|
||
writeln("Автомат для жевательных резинок был только что заправлен; его новое количество составляет: ",
|
||
this.count);
|
||
state.refill();
|
||
}
|
||
|
||
void setState(State state)
|
||
{
|
||
this.state = state;
|
||
}
|
||
|
||
State getState()
|
||
{
|
||
return state;
|
||
}
|
||
|
||
State getSoldOutState()
|
||
{
|
||
return soldOutState;
|
||
}
|
||
|
||
State getNoQuarterState()
|
||
{
|
||
return noQuarterState;
|
||
}
|
||
|
||
State getHasQuarterState()
|
||
{
|
||
return hasQuarterState;
|
||
}
|
||
|
||
State getSoldState()
|
||
{
|
||
return soldState;
|
||
}
|
||
|
||
State getWinnerState()
|
||
{
|
||
return winnerState;
|
||
}
|
||
|
||
override string toString() const
|
||
{
|
||
string s;
|
||
s ~= "\nMighty Gumball, Inc.";
|
||
s ~= "\nD-enabled Standing Gumball Model #2004";
|
||
s ~= "\nInventory: " ~ count.to!string ~ " gumball";
|
||
if (count != 1)
|
||
{
|
||
s ~= "s";
|
||
}
|
||
s ~= "\n";
|
||
s ~= "Machine is " ~ state.to!string ~ "\n";
|
||
return s;
|
||
}
|
||
} |