Ivy League Battle

Individually produced by Yao Yao, Sep. 2019.

To be brief: this is a simple video game.

As the first assignment, I know this is mainly for practice how to use Unity and C# coding, so I can’t help to imagine just build a simple game by myself.

When I watched the online course “CS 50” of Harvard, their students built a game with Scratch, but now we get our own game!

The idea and graphics are from a game I played when I was a child, it’s called “Battle City”, is anyone familiar with it？

I am very happy to have some GSAPP classmates to play and test my game.

Wish every one enjoy the class, and if anyone is interested, below is part of the boring part: my code snippets.

Part of the Player script:

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class Player : MonoBehaviour
{
//Data
public float MoveSpeed=3;
private Vector3 BulletEulerAngles;
private float shieldTimeVal = 3;
private bool isProtected=true;  //shield setting
//List of Reference
public GameObject BulletPrefab;
public GameObject ExplosionPrefab;
public GameObject ShieldEffectPrefab;
private void Awake()
{
}
// Start is called before the first frame update
void Start()
{
}
// Update is called once per frame
void Update()
{
//with Shield or not
if (isProtected)
{
ShieldEffectPrefab.SetActive(true);
shieldTimeVal -= Time.deltaTime;
if (shieldTimeVal<=0)
{
isProtected = false;
ShieldEffectPrefab.SetActive(false); //Close the shield
}
}
}
// Call of Player
private void FixedUpdate()
{
Move();
Attack();
}
//Attack of Player
private void Attack()
{
if (Input.GetKeyDown(KeyCode.Space))
{
//rotation of bullet = the orientation of player+the rotation of bullet
Instantiate(BulletPrefab, transform.position, Quaternion.Euler(transform.eulerAngles+BulletEulerAngles));
}
}
//Move of the Player
private void Move()
{
float v=Input.GetAxisRaw("Vertical");
transform.Translate(Vector3.up * v * MoveSpeed * Time.deltaTime, Space.World);
if (v < 0) //down
{
BulletEulerAngles = new Vector3 (0, 0, 180);
}
else if (v > 0) //up
{
BulletEulerAngles = new Vector3 (0, 0, 0);
}
//Vertical move control
float h = Input.GetAxisRaw("Horizontal");
transform.Translate(Vector3.right * h * MoveSpeed * Time.deltaTime, Space.World);
if (h < 0)
{
BulletEulerAngles = new Vector3 (0, 0, 90);
}
else if (h > 0)
{
BulletEulerAngles = new Vector3 (0, 0, -90);
}
//Horizontal move control
}
//Break of the Player
private void Die()
{
if(isProtected)  //with shield
{
return;
}
//Explosion Effect
Instantiate(ExplosionPrefab, transform.position, transform.rotation);
//Die
Destroy(gameObject);
}
}

Bullet (with Collider, Rigidbody, Trigger and etc):

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class Bullet : MonoBehaviour
{
//Speed of Bullet
public float MoveSpeed = 20;
public bool isPlayerBullet;
// Start is called before the first frame update
void Start()
{
}
// Update is called once per frame
void Update()
{ //Move of Bullet
transform.Translate(transform.up * MoveSpeed * Time.deltaTime, Space.World);
}
private void OnTriggerEnter2D(Collider2D collision)
{
switch (collision.tag)
{
case"Columbia":
collision.SendMessage("Die");
break;
case"Heart":
break;
case"Enemy":
if (isPlayerBullet)
{
collision.SendMessage("Die");
}
Destroy(gameObject);
break;
case"Bricks":
Destroy(gameObject);
break;
case"Wall":
Destroy(gameObject);
break;
default:
break;
}
}
}

Random Born:

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class Born : MonoBehaviour
{
public GameObject PlayerPrefab;
public GameObject[] EnemyPrefabList;
public bool createPlayer;
// Start is called before the first frame update
void Start()
{
Invoke("BornPlayer", 1f);
Destroy(gameObject, 1);
}
// Update is called once per frame
void Update()
{
}
private void BornPlayer()
{
if (createPlayer)
{
Instantiate(PlayerPrefab, transform.position, Quaternion.identity);
}
else
{
int num = Random.Range(0, 7);
Instantiate(EnemyPrefabList[num], transform.position, Quaternion.identity);
}
}
}