37 lines
3.4 KiB
Markdown
37 lines
3.4 KiB
Markdown
# Collide with Depth Buffer
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Menu Path : **Collision > Collide with Depth Buffer**
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The **Collide with Depth Buffer** Block makes particles collide with a specific Camera’s depth buffer. This is especially useful for fast moving particles like sparks or rain drops where precise collision is not as important.
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**Important:** For the block to generate depth collision, the specified Camera must be enabled and the Game view must be visible.
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## Block compatibility
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This Block is compatible with the following Contexts:
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- [Update](Context-Update.md)
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## Block settings
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| **Setting** | **Type** | **Description** |
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| --------------------- | -------- | ------------------------------------------------------------ |
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| **Camera** | Enum | The method to decide which Camera to use to calculate depth collision. The options are:<br/>• **Main**: Uses the main Camera in the Scene. This requires a Camera in the Scene to have the **MainCamera** tag.<br/>• **Custom**: Allows you to specify a particular Camera to use. |
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| **Surface Thickness** | Enum | The method to decide how to specify the thickness of the colliding surface. The options are:<br/>• **Infinite**: Sets the thickness of the colliding surface to be infinite.<br/>• **Custom**: Allows you to specify a particular thickness value. |
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| **Radius Mode** | Enum | The mode that determines the collision radius of each particle. The options are:<br/>• **None**: Particles have a radius of zero.<br/>• **From Size**: Particles inherit their radius from their individual sizes.<br/>• **Custom**: Allows you to set the radius of the particles to a specific value. |
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| **Rough Surface** | Bool | Toggles whether or not the collider simulates a rough surface. When enabled, Unity adds randomness to the direction in which particles bounce back to simulate collision with a rough surface. |
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## Block properties
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| **Input** | **Type** | **Description** |
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| --------------------- | -------- | ------------------------------------------------------------ |
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| **Bounce** | Float | The amount of bounce to apply to particles after a collision. A value of 0 means the particles do not bounce. A value of 1 means particles bounce away with the same speed they impacted with. |
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| **Friction** | Float | The speed that particles lose during collision. The minimum value is 0. |
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| **Lifetime Loss** | Float | The proportion of life a particle loses after collision. |
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| **Roughness** | Float | The amount to randomly adjust the direction of a particle after it collides with the surface.<br/>This property only appears when you enable **Rough Surface**. |
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| **Radius** | Float | The radius of the particle this Block uses for collision detection.<br/>This property only appears when **Radius Mode** is set to **Custom**. |
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| **Camera** | Camera | The Camera to use for generating the collision surface. This Block uses the depth buffer from this Camera to generate the collision surface.<br/>This property only appears when **Camera** is set to **Custom**. |
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| **Surface Thickness** | Float | The thickness of the collision surface. <br/>This property only appears when **Surface Thickness** is set to **Custom**. |
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