This project presents my solution to a test task for a Unity mobile developer position.
Duration : 1 week
The game follow the base principe of Bullet Hell genre.
Enemies spawn off-screen every X seconds, then move toward the player. Enemies respawn when out of sight. Enemies damage the player when in range, the player can survive more hit than enemies.
Weapon shoot projectile every X seconds in a random direction. Projectile ricochet on the screen edges, "snapping" toward an enemy on bounce.
Player and enemies have health bar indicating the current health. HUD must display a counter keeping track of the amount of enemies defeated so far.
- MVP pattern
- Zenject DI
- UniRx
- UniTask
- DoTween
The WeaponBelt acts as a holder of the game weapon firing logic, it triggers the fire of each weapon once it's cooldown have passed.
The base weapon logic (firing loop) is handled in the base WeaponPresenter class from which each weapon must extend.
Each weapon specific logic is implemented in the presenter (including spawning specific projectiles) and the projectile presenter (ex: bounce logic for Bolt projectile).
The Enemy Spawner acts as a holder of enemy spawn and respawn logic, it checks at specific interval what enemies must be respawned and select random location for each enemy to spawn. Each enemy spawned is autonomous (chase the player, attack the player)
GameSettings contains all the settings of the game :
- Editor Draw Line : toggle the editor display (Debug.DrawLine) of the aimbot logic for the bolt ricochet.
- Player Settings : Player starting Health, AttackSpeed and MoveSpeed
Enemy Spawner Settings:- Start Enemy Count : initial spawn of enemies at the start of a new game.
- Max Enemy Count : maximum spawned enemies at any point in the game.
- Enemy Spawn Rate : amount of enemy spawned per second.
- Enemy Spawn Margin : external margin from the screen border from which enemies are spawned.
- Respawn Check Inverval : time interval between each check for enemies that must be respawned.
- Respawn Margin : external margin from the screen border beyond which enemies are respawned.
must be higher than the spawn margin or enemies might be constantly respawned, though this can be mitigated from the respawn check interval.
Enemy Settings: insert an EnemySettings preset.- Prefab : prefab of the enemy.
- Data : Enemy starting Health and MoveSpeed
- Attack : Enemy attack Range, Speed (attack per seconds) and Damage
Weapon Settings: insert an WeaponSettings preset- Cooldown : time (in seconds) between each fire of the weapon
- Burst Count : amount of projectiles for each fire of the weapon
- Burst Interval : amount of time between each projectile in a burst
Projectile Settings: insert an ProjectileSetting preset- Prefab : prefab of the projectile
- Projectile Speed, Lifetime (duration in second) and Damage
- [BOLT] Bounce Aimbot Factor : The amount of freedom choosing an enemy not aligned with the bounce direction.
The bounce bias to snap at a enemy direction can be configured in the Bolt projectile settings : A value of 0 mean there is no aim assist in the bounce, aka the realistic bounce. A value of 1 mean the projectile can snap to any enemy in a 180 angle ahead of it from its bounce direction.
Enemies behind the projectile (based on bounce direction) are not considered legal targets for the bias.
The bounce always targets the enemy the most aligned to the original bouncing direction, so the bounce remains as realistic as possible.
The logic can be displayed in the editor scene by toggling the GameSettings Editor Draw Line.
- White line displays the default bounce direction (realistic one)
- Yellow lines display the available targets for snap based on the
Bounce Aimbot Factorof the projectile. - Blue line displays the final bounce direction.
The background moves with the player, snapping to positions matching its tiling size, so its invisible to the user. This effectively simulates infinite map to the player.
On player death, all enemies stop chasing or attacking the player, and all active projectiles are removed.
A small UI will allow the user to choose between Revive or New Game
Revive: The enemies are pushed up to 5 units away from the player and the player life is restored.New Game: The enemies are removed and the game data is reseted (timer, kill counter, etc).
The game implements most basic Bullet-Hell data common in the genra (like global attack speed, projectiles per burst, projectile speed, etc) in anticipation of adding boost "tomes" and power up. It is also possible to create new weapons to the player by extending base classes and installer for the weapon and projectiles.
The player character can be moved by pressing anywhere on the screen which enable the joystick at the touch location. The joystick dissapear when the touch is released.