COP 701 ASSIGNMENT#2 - Contra Game

This is an assignment for course "Software Systems LAB" (COL 701) taken by Dr. Smruti Ranjan Sarangi (IIT Delhi).

Submitted by-

Bhuvnesh Kumar (2023MCS2011) and Vikas Kumar Saini (2023MCS2492)

1. Problem Statement

Implement the Contra game. Use Unity3D or the Unreal engine.

1. Make it a standalone application.
2. Incorporate very nice visual elements.
3. Make the graphics very smooth.
4. Gradually make a level harder.
5. Have at least three levels. Be creative and improvise. Add at least two new features.

• We implemented the Contra game using Unity3D engine. We made it a standalone application.
• Nice Visual Elements we incorporated. Details are provided further in the report.
• We tried our best to make the graphics smooth.
• Levels are made harder by incorporating more traps, enemies and the intelligently designing subsequent levels.
• Three levels are designed in the game. Various creative features are added throughout the game. Pause/ Resume, coins collect, player hold rifle and shoot in all direction. Pass through platform

2. Game details
3. Game Overview

”Contra” is a classic run-and-gun platformer game known for its intense action and challenging levels. Players control soldiers fighting against alien and enemy forces in a 2D side-scrolling environment.

2. Game mechanics

The following features are included:

• Player Controls: Player can move left/right, jump, crouch, and shoot.
• Health: Player have a health bar; getting hit reduces health.
• Enemies: Enemies include alien creatures, soldiers, and mechanical foes.
• Display: The game screen should display health, current weapon, and score.

3. Level design

• Themes: Levels include jungle, ice, and Fortress themes.
• Obstacles: Levels feature platforms, traps, and moving hazards.
• Boss Battles: Each level ends with a challenging boss battle.

4. Bonus

The following features are added for extra credit:

• Power-ups: Collectible power-ups for Changing bullets (Spread shot, Burst shot).
• Power-ups: Collectible power-ups for Changing Guns (Flame Thrower, Shot Gun).
• Lives: Player has a limited number of lives; extra lives can be earned if lives are less than max possible lives.
• Health: Player has a limited health; additional health can be earned when it reduces.
• Coins: Player collects coins to increase the score.
• Moving Platforms: Player has to jump on platform to cross the area.
• Moving Hazards: Moving enemies, Saws.
• Platform Crossing: Player can jump to upper platform without colliding.
• Platform Crossing: Player can go to lower platform without colliding.
• Boss sends enemies: While fighting with boss along with shooting fireballs, boss also sends enemies.
• Enemies take some of player’s health on death if player is near enemy when it exploded.
• Enemies on moving platform.
• Health and lives on moving platform.
• Traps: Various traps are installed at different locations. These include Spikes and rotating saws.
• Menus: Start menu, Pause Menu, Game Over Menu, load levels option menu are also provided for in game transitions.
• Mechanical foes: Turrets are installed.
• Respawn: Player respawns after health is zero.
• Gun Display: Gun is displayed in players hand.

Player Controls

• Move Left: A / LEFT ARROW KEY
• Move Right: D / RIGHT ARROW KEY
• Jump: SPACE
• Crouch: S / Down arrow key
• Aim: MOUSE
• Go to Lower terrain: double press S key
• Single Shoot mode: LEFT CLICK / left Ctrl
• Automatic Shoot mode : RIGHT CLICK / left Alt
• Pause Game: P Key

5. Scripts
6. Enemy Scripts

• EnemyBullet Script: Tracks player current position then sends the bullet at the player’s position and if player is hit the bullet is destroyed.
• EnemyFacePlayer Script: If checks player position with respect to enemy, then if enemy is not facing player then rotates it to face player.
• EnemyFire Script: Checks if player is in range. Then shoots bullets at intervals at the player.
• EnemyLife Script: Checks Enemy life. If life is less than zero then changes enemy animation to dying animation. Also has a function to destroy the enemy object which is called from the event called at the die animation of enemy**

.

• EnemyRotation: Turret rotation scripts. Rotates turret in player’s direction**.**
• EnemyRunLeft Script: Assigns the direction of movement of enemy to the left.**
• SpawnerEnemy Script: Spawns the enemies at the spawner position. It holds enemies in an array. Then spawns a number of enemies at random time intervals. It also sets the enemy movement speed at random at time of spawning the enemy.**

2. Health Scripts

• Healthbar Script: Fills the player’s health bar on canvas.**
• Lifebar Script: Fills the player’s life bar on canvas.**

3. MovingPlatform Scripts

• StickToPlatform Script: Makes the player move with platform if it is standing on it.**
• WaypointFollower Script: Used to move platform/objects between the two points.**

4. Player Scripts

• BulletScript Script: If player bullet hits enemy then decrease the enemy health life, and destroys bullet.**
• ChangeRifle Script: Changes the player rifle when player takes the rifle powerups.**
• displayScore Script: Displays the Current score on the canvas and update the score if coin is collected.**
• FireBullet Script: Fires the bullet from the firepoint depending on the powerup of the bullet player has taken.**
• MainCameraController Script: camera follows the player.**
• PlayerLife Script: Controls player life. Updates when player takes damage or powerup.**
• PlayerMovement Script: Controls the player movements and animations when keyboard movement keys are pressed. powerUp**
• powerup Script: Changes bullets when bullet power up is taken.**
• RifleRotation Script: Rotates Player rifles with mouse position.**
• ScoreCalculate: Calculates and updates the score when player bullet hits enemy.**

5. Scenes Scripts

• PauseMenu Script: Pauses/resumes the gameplay, load other scenes.**
• StartMenu Script: Plays different levels, and quit applications**

6. autoDestroy Script: Destroys the bullets which did not hit the player. Also destroys the distant past enemies which were not killed by the player.**

NOTE: All graphical images are picked up from the internet. All levels’ objects are designed by us using the those images.

Playing with Mouse is recommended instead of Touchpad.
Best Game Play can be experienced in 1920x1080 Resolution.

Best of Luck!!