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Speeding Up

Part of the Building Real Games section of Coddy's Unity journey. Lesson 29 of 60.

challenge icon

Challenge

Medium

Speed the road up, with the speed kept in GameManager.

  1. In GameManager, add public static GameManager Instance; and set Instance = this; in Awake().
  2. In its Update(): speed = Mathf.Min(speed + speedUp * Time.deltaTime, maxSpeed);.
  3. In Obstacle, delete the speed field and move at GameManager.Instance.speed, read every frame.

Press Play: the obstacles come faster and faster. Then Check.

Try it yourself

using UnityEngine;

public class GameManager : MonoBehaviour
{
    public float speed = 10f;
    public float speedUp = 0.5f;
    public float maxSpeed = 20f;

    // Make this a singleton, and speed the road up every frame
}

All lessons in Building Real Games

1On-Screen Text

Canvas and TextShow the ScoreFormat NumbersA Countdown TimerRecap: Speedometer

4Scenes and Levels

Load a SceneRestart the LevelNext LevelKeep Between ScenesRecap: Level Select

7Time Control

Pause with timeScaleSlow MotionUnscaled TimeRecap: Bullet Time

10Project: 3D Platformer

The CourseMoving PlatformsProject lessonRide the PlatformProject lessonFall and RespawnProject lessonReach a CheckpointProject lessonGems on ScreenProject lessonFinish LineProject lessonBest TimeProject lesson

2Buttons and Screens

Buttons and onClickLambdasWiring in the InspectorPanels On and OffHealth BarsRecap: Upgrade Shop

5Saving with PlayerPrefs

Save a NumberLoad with a DefaultHigh ScoreSave SettingsRecap: Coins in the Bank

8Character Controller

CharacterController.MoveGravity by HandJumpingPushing ThingsMove Where You LookRecap: Double Jump

11Final Challenges

Shop and InventoryTime TrialSurvival NightThe End of the Night

3The Game Manager

One Script Runs the GameThe SingletonGame StatesSwitching on the StateRecap: Round Manager

6Project: Endless Runner

Three LanesObstacles AheadProject lessonSpeeding UpProject lessonScore on ScreenProject lessonCrash Ends the RunProject lessonRun AgainProject lessonBest RunProject lesson

9The New Input System

Two Input SystemsKeyboard and MousePressed This FrameInput ActionsRecap: Input Swap

Practice on your own: Unity playground