The challenge: use the skills I just learned in the Sumo Battle prototype in a completely different context: the soccer field. Just like in the prototype, you will control a ball by rotating the camera around it and applying a forward force, but instead of knocking them off the edge, your goal is to knock them into the opposing net while they try to get into your net. Just like in the Sumo Battle, after every round a new wave will spawn with more enemy balls, putting your defense to the test. However, almost nothing in this project is functioning! It was my job to get it working correctly.
https://meta.dwdenney.com/challenge4/
Challenge Outcomes:
- Enemies move towards your net, but you can hit them to deflect them away
- Powerups apply a temporary strength boost, then disappear after 5 seconds
- When there are no more enemy balls, a new wave spawns with 1 more enemy
* The bug where the enemy hits you if you hit them, is actually a pretty good technique for if you want the enemy to attack the player forcefully rather than follow/chase them.
Bugs fixed:
Hitting an enemy sends it back towards you
A new wave spawns when the player gets a powerup
The powerup never goes away
2 enemies are spawned in every wave
The enemy balls are not moving anywhere
Bonuses completed:
Bonus: The player needs a turbo boost
The enemies never get more difficult
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class RotateCameraX : MonoBehaviour
{
private float speed = 200;
public GameObject player;
// Update is called once per frame
void Update()
{
float horizontalInput = Input.GetAxis("Horizontal");
transform.Rotate(Vector3.up, horizontalInput * speed * Time.deltaTime);
transform.position = player.transform.position; // Move focal point with player
}
}
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class PlayerControllerX : MonoBehaviour
{
private Rigidbody playerRb;
private float speed = 500;
private float boostSpeed = 1000;
private GameObject focalPoint;
public bool hasPowerup;
public GameObject powerupIndicator;
public int powerUpDuration = 5;
private float normalStrength = 10; // how hard to hit enemy without powerup
private float powerupStrength = 25; // how hard to hit enemy with powerup
void Start()
{
playerRb = GetComponent<Rigidbody>();
focalPoint = GameObject.Find("Focal Point");
}
void Update()
{
// get the users input on the vertical axis (up/down arrow keys) or left joystick up/down
float verticalInput = Input.GetAxis("Vertical");
// Set powerup indicator position to beneath player
powerupIndicator.transform.position = transform.position + new Vector3(0, -0.6f, 0);
if (Input.GetKeyDown(KeyCode.Space))
{
// Add turbo boost force to player in direction of the focal point (and camera)
playerRb.AddForce(focalPoint.transform.forward * verticalInput * (speed + boostSpeed) * Time.deltaTime);
Debug.Log("turbo activated");
}
else
{
// Add normal force to player in direction of the focal point (and camera)
playerRb.AddForce(focalPoint.transform.forward * verticalInput * speed * Time.deltaTime);
Debug.Log("normal speed");
}
}
// If Player collides with powerup, activate powerup
private void OnTriggerEnter(Collider other)
{
if (other.gameObject.CompareTag("Powerup"))
{
Destroy(other.gameObject);
hasPowerup = true;
powerupIndicator.SetActive(true);
}
}
// Coroutine to count down powerup duration
IEnumerator PowerupCooldown()
{
yield return new WaitForSeconds(powerUpDuration);
hasPowerup = false;
powerupIndicator.SetActive(false);
}
// If Player collides with enemy
private void OnCollisionEnter(Collision other)
{
if (other.gameObject.CompareTag("Enemy"))
{
Rigidbody enemyRigidbody = other.gameObject.GetComponent<Rigidbody>();
Vector3 awayFromPlayer = other.gameObject.transform.position - transform.position;
if (hasPowerup) // if have powerup hit enemy with powerup force
{
enemyRigidbody.AddForce(awayFromPlayer * powerupStrength, ForceMode.Impulse);
}
else // if no powerup, hit enemy with normal strength
{
enemyRigidbody.AddForce(awayFromPlayer * normalStrength, ForceMode.Impulse);
}
}
}
}
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class SpawnManagerX : MonoBehaviour
{
public GameObject enemyPrefab;
public GameObject powerupPrefab;
private float spawnRangeX = 10;
private float spawnZMin = 15; // set min spawn Z
private float spawnZMax = 25; // set max spawn Z
public int enemyCount;
public int waveCount = 1;
public GameObject player;
// Update is called once per frame
void Update()
{
enemyCount = GameObject.FindGameObjectsWithTag("Enemy").Length;
if (enemyCount == 0)
{
SpawnEnemyWave(waveCount);
}
}
// Generate random spawn position for powerups and enemy balls
Vector3 GenerateSpawnPosition ()
{
float xPos = Random.Range(-spawnRangeX, spawnRangeX);
float zPos = Random.Range(spawnZMin, spawnZMax);
return new Vector3(xPos, 0, zPos);
}
void SpawnEnemyWave(int enemiesToSpawn)
{
Vector3 powerupSpawnOffset = new Vector3(0, 0, -15); // make powerups spawn at player end
// If no powerups remain, spawn a powerup
if (GameObject.FindGameObjectsWithTag("Powerup").Length == 0) // check that there are zero powerups
{
Instantiate(powerupPrefab, GenerateSpawnPosition() + powerupSpawnOffset, powerupPrefab.transform.rotation);
}
// Spawn number of enemy balls based on wave number
for (int i = 0; i < waveCount; i++)
{
Instantiate(enemyPrefab, GenerateSpawnPosition(), enemyPrefab.transform.rotation);
}
waveCount++;
ResetPlayerPosition(); // put player back at start
}
// Move player back to position in front of own goal
void ResetPlayerPosition ()
{
player.transform.position = new Vector3(0, 1, -7);
player.GetComponent<Rigidbody>().velocity = Vector3.zero;
player.GetComponent<Rigidbody>().angularVelocity = Vector3.zero;
}
}
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class EnemyX : MonoBehaviour
{
public float speed;
private Rigidbody enemyRb;
private GameObject playerGoal;
// Start is called before the first frame update
void Start()
{
enemyRb = GetComponent<Rigidbody>();
playerGoal = GameObject.Find("Player Goal");
}
// Update is called once per frame
void Update()
{
// Set enemy direction towards player goal and move there
Vector3 lookDirection = (playerGoal.transform.position - transform.position).normalized;
enemyRb.AddForce(lookDirection * speed * Time.deltaTime);
}
private void OnCollisionEnter(Collision other)
{
// If enemy collides with either goal, destroy it
if (other.gameObject.name == "Enemy Goal")
{
Destroy(gameObject);
}
else if (other.gameObject.name == "Player Goal")
{
Destroy(gameObject);
}
}
}