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Tank.java
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229 lines (203 loc) · 3.59 KB
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import java.util.Scanner;
class Tank
{
public Tank(int fuelLevel)
{
this.fuelLevel = fuelLevel;
location = new Location(50,50);
in = new Scanner(System.in);
}
public void fire()
{
int fuelConsumed = 0;
if(this.fuelLevel <=0)
{
Util.promptUser("Fuel has finished. Can not fire.");
}
else
{
System.out.println("Enter the Power Level: ");
int temp = in.nextInt();
if(temp <= this.powerLevels)
{
this.powerLevel = temp;
fuelConsumed = this.powerLevel * this.fuelConsumption;
//dont display negative fuel level.
// if(fuelLevel < 0)
// {
// fuelLevel = 0 ;
// }
//
if(fuelLevel - fuelConsumed < 0)
{
fuelConsumed = fuelLevel;
}
fuelLevel -= fuelConsumed;
Util.promptUser("Last fire consumed : " + fuelConsumed + " Liters."+
"\nCurrent Fuel Level: " + fuelLevel + " Liters.");
}
else
{
Util.promptUser("Invalid power level specified. Firing cancelled.");
}
}
}
public void moveBack()
{
turnLeft();
turnLeft();
moveAhead();
}
public void moveAhead()
{
if(this.direction == Direction.RIGHT)
{
if(this.location.x == 100)
{
Util.promptUser("Tank on the boundary can't move Right.");
}
else
{
if(consumeFuel())
{
this.location.x++;
increaseMeter();
}
}
}
else if(this.direction == Direction.LEFT)
{
if(this.location.x == 0)
{
Util.promptUser("Tank on the boundary can't move Left.");
}
else
{
if(consumeFuel())
{
this.location.x--;
increaseMeter();
}
}
}
else if(this.direction == Direction.UP)
{
if(this.location.y == 100)
{
Util.promptUser("Tank on the boundary can't move Up.");
}
else
{
if(consumeFuel())
{
this.location.y++;
increaseMeter();
}
}
}
else if(this.direction == Direction.DOWN)
{
if(this.location.y == 0)
{
Util.promptUser("Tank on the boundary can't move Down.");
}
else
{
if(consumeFuel())
{
this.location.y--;
increaseMeter();
}
}
}
}
protected void increaseMeter()
{
meter++;
}
protected boolean consumeFuel()
{
if(fuelLevel<=0)
{
Util.promptUser("Fuel has finished. Can not move.");
return false;
}
else
{
this.fuelLevel -= this.fuelConsumption;
return true;
}
}
public int [] getLocation()
{
return new int [] {this.location.x, this.location.y};
}
public Enum getDirection()
{
return direction;
}
public int getMeter()
{
return meter;
}
public int getFuelLevel()
{
return fuelLevel;
}
public String getName()
{
return this.name;
}
public void turnLeft()
{
switch(direction)
{
case RIGHT:
this.direction = Direction.UP;
break;
case UP:
this.direction = Direction.LEFT;
break;
case LEFT:
this.direction = Direction.DOWN;
break;
case DOWN:
this.direction = Direction.RIGHT;
}
}
public void turnRight()
{
switch(direction)
{
case RIGHT:
this.direction = Direction.DOWN;
break;
case UP:
this.direction = Direction.RIGHT;
break;
case LEFT:
this.direction = Direction.UP;
break;
case DOWN:
this.direction = Direction.LEFT;
}
}
private class Location
{
int x, y;
public Location(int x, int y)
{
this.x = x;
this.y = y;
}
}
protected int powerLevels, powerLevel;
protected int fuelConsumption;
protected String name;
private Scanner in;
private int fuelLevel, meter=0;
private Direction direction = Direction.RIGHT;
private Location location;
private enum Direction
{ UP, DOWN, LEFT, RIGHT};
}