feat: adding vehicle classes and main program

The classes are on Vehicles folder and being used in Main.java file.

src/Vehicles/Sport.java

@@ -0,0 +1,174 @@
+package Vehicles;
+
+public class Sport extends Vehicle {
+  private int topSpeed;
+
+  public enum GearNumbers {
+    R,
+    N,
+    GEAR_1,
+    GEAR_2,
+    GEAR_3,
+    GEAR_4,
+    GEAR_5,
+    GEAR_6
+  }
+
+  private GearNumbers gear;
+
+  public Sport(String make, String model, int year, int topSpeed) {
+    super(make, model, year);
+    this.topSpeed = topSpeed;
+    this.typeOfEngine = getManualEngineType();
+    this.doors = 2;
+    this.gear = this.setGear(0);
+  }
+
+  private GearNumbers setGear(int gear) {
+    switch (gear) {
+      case -1:
+        return GearNumbers.R;
+      case 0:
+        return GearNumbers.N;
+      case 1:
+        return GearNumbers.GEAR_1;
+      case 2:
+        return GearNumbers.GEAR_2;
+      case 3:
+        return GearNumbers.GEAR_3;
+      case 4:
+        return GearNumbers.GEAR_4;
+      case 5:
+        return GearNumbers.GEAR_5;
+      case 6:
+        return GearNumbers.GEAR_6;
+      default:
+        return GearNumbers.N;
+    }
+  }
+
+  public double getTopSpeed() {
+    if (this.gear == GearNumbers.N || this.gear == GearNumbers.R) {
+      return 0;
+    }
+    switch (this.gear) {
+      case GEAR_1:
+        return topSpeed * 0.2;
+      case GEAR_2:
+        return topSpeed * 0.35;
+      case GEAR_3:
+        return topSpeed * 0.5;
+      case GEAR_4:
+        return topSpeed * 0.65;
+      case GEAR_5:
+        return topSpeed * 0.8;
+      case GEAR_6:
+        return topSpeed;
+      default:
+        return 0;
+    }
+  }
+
+  @Override
+  public String forward() {
+    if (this.gear == GearNumbers.N) {
+      this.changeGearUp();
+    } else if (this.gear == GearNumbers.R) {
+      this.gear = this.setGear(1);
+    }
+    return "The sport vehicle is zooming forward at high speed!";
+  }
+
+  @Override
+  public String reverse() {
+    if (this.gear != GearNumbers.R) {
+      this.gear = this.setGear(-1);
+    }
+    return "The sport vehicle is reversing quickly!";
+  }
+
+  @Override
+  public String stop() {
+    if (this.gear != GearNumbers.N) {
+      this.setGearToNeutral();
+    }
+    return "The sport vehicle screeches to a halt!";
+  }
+
+  public String drift() {
+    if (this.gear == GearNumbers.N || this.gear == GearNumbers.R) {
+      return "Cannot drift while in Neutral or Reverse gear!";
+    }
+    return "The sport vehicle is drifting around the corner!";
+  }
+
+  public String nitroBoost() {
+    if (this.gear == GearNumbers.N || this.gear == GearNumbers.R) {
+      return "Cannot activate nitro boost while in Neutral or Reverse gear!";
+    }
+    if (this.gear != GearNumbers.GEAR_6) {
+      this.gear = this.setGear(6);
+    }
+    return "The sport vehicle activates nitro boost for extra speed!";
+  }
+
+  public void changeGearUp() {
+    switch (this.gear) {
+      case R:
+        this.gear = this.setGear(0);
+        break;
+      case N:
+        this.gear = this.setGear(1);
+        break;
+      case GEAR_1:
+        this.gear = this.setGear(2);
+        break;
+      case GEAR_2:
+        this.gear = this.setGear(3);
+        break;
+      case GEAR_3:
+        this.gear = this.setGear(4);
+        break;
+      case GEAR_4:
+        this.gear = this.setGear(5);
+        break;
+      case GEAR_5:
+        this.gear = this.setGear(6);
+        break;
+    }
+  }
+
+  public GearNumbers getGear() {
+    return this.gear;
+  }
+
+  public void changeGearDown() {
+    switch (this.gear) {
+      case GEAR_6:
+        this.gear = this.setGear(5);
+        break;
+      case GEAR_5:
+        this.gear = this.setGear(4);
+        break;
+      case GEAR_4:
+        this.gear = this.setGear(3);
+        break;
+      case GEAR_3:
+        this.gear = this.setGear(2);
+        break;
+      case GEAR_2:
+        this.gear = this.setGear(1);
+        break;
+      case GEAR_1:
+        this.gear = this.setGear(1);
+        break;
+      case N:
+        this.gear = this.setGear(-1);
+        break;
+    }
+  }
+
+  public void setGearToNeutral() {
+    this.gear = GearNumbers.N;
+  }
+}