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Add EnemyControllerComponent and PeriodicShootingComponent; implement enemy shooting behavior and bullet spawning

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This commit is contained in:
Gabriel Kaszewski
2025-09-13 13:53:40 +02:00
parent db2a090acc
commit e6f8989d16
9 changed files with 94 additions and 111 deletions
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20
scripts/components/EnemyControllerComponent.cs Normal file
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@@ -0,0 +1,20 @@
using Godot;
namespace Mr.BrickAdventures.scripts.components;
[GlobalClass]
public partial class EnemyControllerComponent : Node
{
[Export] public SideToSideMovementComponent MovementComponent { get; set; }
[Export] public PeriodicShootingComponent ShootingComponent { get; set; }
public override void _Process(double delta)
{
if (MovementComponent == null || ShootingComponent == null) return;
if (MovementComponent.Direction != Vector2.Zero)
{
ShootingComponent.ShootDirection = MovementComponent.Direction;
}
}
}

1
scripts/components/EnemyControllerComponent.cs.uid Normal file
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@@ -0,0 +1 @@
uid://bhbgjr8ty2n85

66
scripts/components/PeriodicShootingComponent.cs
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@@ -1,3 +1,4 @@
using System;
using Godot;
namespace Mr.BrickAdventures.scripts.components;
@@ -8,31 +9,27 @@ public partial class PeriodicShootingComponent : Node
[Export] public PackedScene BulletScene { get; set; }
[Export] public float ShootInterval { get; set; } = 1.0f;
[Export] public Vector2 ShootDirection { get; set; } = Vector2.Right;
[Export] public SideToSideMovementComponent SideToSideMovement { get; set; }
[Export] public Node2D BulletSpawnRight { get; set; }
[Export] public Node2D BulletSpawnLeft { get; set; }
[Export] public Node2D BulletSpawnPointRight { get; set; }
[Export] public Node2D BulletSpawnPointLeft { get; set; }
[Export] public float ShootingIntervalVariation { get; set; } = 0.0f;
private Timer _timer;
private RandomNumberGenerator _rng;
public override void _Ready()
{
_rng = new RandomNumberGenerator();
SetupTimer();
}
public override void _Process(double delta)
{
if (SideToSideMovement == null) return;
ShootDirection = SideToSideMovement.Direction != Vector2.Zero ? SideToSideMovement.Direction : Vector2.Right;
}
private void SetupTimer()
{
_timer = new Timer();
_timer.WaitTime = GetShootInterval();
_timer.OneShot = false;
_timer.Autostart = true;
_timer = new Timer
{
WaitTime = GetNextShootInterval(),
OneShot = false,
Autostart = true
};
_timer.Timeout += OnTimerTimeout;
AddChild(_timer);
}
@@ -40,33 +37,52 @@ public partial class PeriodicShootingComponent : Node
private void OnTimerTimeout()
{
Shoot();
_timer.Start();
_timer.WaitTime = GetNextShootInterval();
}
private double GetShootInterval()
private double GetNextShootInterval()
{
if (ShootingIntervalVariation == 0f) return ShootInterval;
if (ShootingIntervalVariation <= 0f)
{
return ShootInterval;
}
var rng = new RandomNumberGenerator();
return ShootInterval + rng.RandfRange(-ShootingIntervalVariation, ShootingIntervalVariation);
return Math.Max(0.01, ShootInterval + _rng.RandfRange(-ShootingIntervalVariation, ShootingIntervalVariation));
}
private void Shoot()
{
if (BulletScene == null)
{
GD.PushError("PeriodicShootingComponent: BulletScene is not set.");
return;
}
if (ShootDirection == Vector2.Zero) return;
var spawnNode = (ShootDirection.X >= 0 || BulletSpawnPointLeft == null)
? BulletSpawnPointRight
: BulletSpawnPointLeft;
if (spawnNode == null)
{
GD.PrintErr("PeriodicShootingComponent: A suitable bullet spawn point is not set.");
return;
}
var root = Owner as Node2D;
var spawnPosition = spawnNode.GlobalPosition;
var owner = Owner as Node2D;
var ownerRotation = owner?.Rotation ?? 0f;
var bulletInstance = BulletScene.Instantiate<Node2D>();
var launchComponent = bulletInstance.GetNodeOrNull<LaunchComponent>("LaunchComponent");
var spawnPosition = ShootDirection == Vector2.Right ? BulletSpawnRight.GlobalPosition : BulletSpawnLeft.GlobalPosition;
if (launchComponent != null)
if (bulletInstance.GetNodeOrNull<LaunchComponent>("LaunchComponent") is { } launchComponent)
{
launchComponent.InitialDirection = ShootDirection;
launchComponent.SpawnPosition = spawnPosition;
if (root != null) launchComponent.SpawnRotation = root.Rotation;
launchComponent.SpawnRotation = ownerRotation;
}
bulletInstance.Position = spawnPosition;
bulletInstance.GlobalPosition = spawnPosition;
GetTree().CurrentScene.AddChild(bulletInstance);
}
}