---
title: "Reproduce"
url: "https://help.maxon.net/c4d/en-us/Content/html/OFPREPRODUCE-FP_REPRODUCE_REPRODUCTION.html"
section_path: "Simulate Menu > The Simulation System > Particle Emitter > Reproduce > Reproduce"
element_id: "OFPREPRODUCE"
group_id: "FP_REPRODUCE_REPRODUCTION"
description: "You can use this option to switch the creation of particles on or off. There is also the option of controlling the reproduction individually, e.g., via …"
---

## Reproduce

### Enabled

Parameter ID: `FP_REPRODUCE_REPRODUCTION_ENABLED`

You can use this option to switch the creation of particles on or off. There is also the option of controlling the reproduction individually, e.g., via keyframes.

### Count

Parameter ID: `FP_REPRODUCE_REPRODUCTION_COUNT` · Range: [0..2147483647]

Enter the number of new particles to be created here. The **Scatter** selected is decisive here.

### Scatter

Parameter ID: `FP_REPRODUCE_REPRODUCTION_MODE`

This is where you control where the new particles are to be created:

- **Per Particle**: Each original particle will break down into a**Count** of new particles. This count can also be varied per particle.
- **Distribute**: The new particles will be distributed in the area between the original particles. This means that only as many new particles will be created as defined under **Count**.

### Count Variance

Parameter ID: `FP_REPRODUCE_REPRODUCTION_COUNT_VARIANCE` · Range: [0..2147483647]

With the *Per Particle* **Scatter setting**, the maximum change in the **Count** of particles that will occur per original particle can be defined.

### Kill Source

Parameter ID: `FP_REPRODUCE_REPRODUCTION_KILLSOURCE`

The original particles will be automatically deleted. This is particularly advantageous when generating new particles per original particle, as it will actually create the illusion of particle decay.\
If this option is disabled, you will have access to an additional **Mode setting** that can also be used to control the evaluation of the original particles.

### Mode

Parameter ID: `FP_REPRODUCE_REPRODUCTION_ONCE`

If **Kill Source** is disabled, you will have access to these options:

- **Once**: Each original particle can only generate new particles once. The original particle will be retained.
- **Constant**: Each original particle will generate new particles in each frame and will also be retained. This means that many new particles can be produced very quickly. Therefore, only use a very small **Count** value in this mode at first and only increase it in small steps until you achieve the desired effect.

### Continuous

Parameter ID: `FP_REPRODUCE_REPRODUCTION_CONTINUOUS`

This option is active by default and ensures that particles will also be created in the time between the animation frames. This prevents gaps or steps in the particle flow.

### Offset

Parameter ID: `FP_REPRODUCE_REPRODUCTION_OFFSET` · Range: [0..+∞m]

The new particles will be generated on spherical surfaces whose radius you can define with this value.

### Offset Variance

Parameter ID: `FP_REPRODUCE_REPRODUCTION_OFFSET_VARIANCE` · Range: [0..+∞m]

Here you can define a maximum deviation from the position on a spherical surface originally defined via **Offset** for each newly-created particle.

![Image: 2024-4_Particles_ReproduceEmitter_01.png](https://help.maxon.net/c4d/en-us/Content/Resources/Images/2024-4_Particles_ReproduceEmitter_01.png)\
Here you can see the decay of a green particle into red particles. The new particles will be created on the left on a spherical surface with the radius **Offset**. On the right is the same scene, this time with an additional **Offset Variance**.

### Seed

Parameter ID: `FP_REPRODUCE_REPRODUCTION_SEED` · Range: [0..2147483647]

This value forms the basis for all random calculations of the Emitter. There are also many *Properties settings* that offer a random variation. These also use this **Seed value**.

![Image: subgroup.gif](https://help.maxon.net/c4d/en-us/Content/Resources/Images/subgroup.gif)\
Group

### Group Inheritance

Parameter ID: `FP_REPRODUCE_GROUP_INHERITANCE`

Activate this option to manage the new particles in the same group as the original particles.

### Group

Parameter ID: `FP_REPRODUCE_GROUP_GROUP`

### Create Group

Parameter ID: `FP_REPRODUCE_GROUP_CREATE`

Here you can create the link to a *Particle Group* in which the particles generated by the Emitter should be managed. You can call up new groups at any time via the *Simulate* menu and assign them by dragging them into this field or use an existing group. This step is shortened by clicking the **Create Group** button. A new group is automatically created, which is linked for this Emitter. Clicking on the pipette symbol to the right of the group field activates a selection tool that lets you click directly on a *Particle Group* in the *Object Manager* to create a link.