Steps to Scale a Particle System

1. Set the Scaling Mode:

• Open the Particle System component in the Inspector.
• In the Main Module, find the Scaling Mode option. You can choose from three modes:
• Hierarchy: The particle system scales according to its Transform and all its parents. This is useful if you want the particle system to inherit the scale of its parent GameObject.
• Local: The particle system uses only its own Transform scale, ignoring any parent scales. This is helpful if you want to control the particle system's size independently.
• Shape: This mode applies the scale only to the source positions of the particles, not affecting their size or movement.

  2
• 2 Sources

  2

2. Adjust the Transform Scale:

• Select the GameObject that contains the particle system in the Hierarchy.
• In the Transform component, modify the Scale values (X, Y, Z) to increase or decrease the size of the particle system. If you set the scaling mode to Hierarchy, the particle system will scale according to these values.

  2
• 2 Sources

  2

3. Using Scripts for Dynamic Scaling:

• If you need to scale the particle system at runtime, you can use a script. Here’s a simple example:

using UnityEngine;
public class ScaleParticleSystem : MonoBehaviour
{
private ParticleSystem ps;
void Start()
{
ps = GetComponent<ParticleSystem>();
}
void Update()
{
// Example: Scale the particle system based on a slider value
float scaleValue = 1.0f; // Replace with your scaling logic
ps.transform.localScale = new Vector3(scaleValue, scaleValue, scaleValue);
}
}

• Attach this script to the GameObject with the particle system to control its scale dynamically.

  1
• 1 Source

  1

Tips for Effective Scaling

• Test Different Scaling Modes: Depending on your needs, experiment with different scaling modes to see which one gives you the desired effect.
• Check Particle Size: If you notice that scaling the GameObject does not affect the particle size, ensure that the particle size settings in the Particle System are also adjusted accordingly.
• Visual Adjustments: Use the Unity Editor to visually adjust the scale of the particle system while in Edit mode, which can help you see the effects in real-time.

  1

  
  By following these steps, you can effectively scale your particle systems in Unity to fit your game's requirements.
• 1 Source

  1