# PhysicsWorld

**Description:**

  A record that represents a physics world in the game.

**Class Object:** [PhysicsWorld Class](/docs/api/Class%20Object/PhysicsWorld).

**Inherits from:** [Node](/docs/api/Class/Node).

## query

**Type:** Function.

**Description:**

  Queries the physics world for all bodies that intersect with the specified rectangle.

**Signature:**
```tl
query: function(self: PhysicsWorld, rect: Rect, handler: function(Body): boolean): boolean
```

**Parameters:**

| Parameter | Type | Description |
| --- | --- | --- |
| rect | Rect | The rectangle to query for bodies. |
| handler | function | A function that is called for each body found in the query. |

**Returns:**

| Return Type | Description |
| --- | --- |
| boolean | Whether the query was interrupted, true means interrupted, false otherwise. |

**Definition for handler:**


* **Parameters of handler:**

| Parameter | Type | Description |
| --- | --- | --- |
| body | Body | The body found in the query. |

* **Returns of handler:**

| Return Type | Description |
| --- | --- |
| boolean | Whether to continue querying for more bodies, false to continue, true to stop. |

## raycast

**Type:** Function.

**Description:**

  Casts a ray through the physics world and finds the first body that intersects with the ray.

**Signature:**
```tl
raycast: function(self: PhysicsWorld, start: Vec2, stop: Vec2, closest: boolean, handler: function(Body, point: Vec2, normal: Vec2): boolean): boolean
```

**Parameters:**

| Parameter | Type | Description |
| --- | --- | --- |
| start | Vec2 | The starting point of the ray. |
| stop | Vec2 | The ending point of the ray. |
| closest | boolean | Whether to stop ray casting upon the closest body that intersects with the ray.<br/>Set closest to true to get a faster ray casting search. |
| handler | function | A function that is called for each body found in the raycast. |

**Returns:**

| Return Type | Description |
| --- | --- |
| boolean | Whether the raycast was interrupted, true means interrupted, false otherwise. |

**Definition for handler:**


* **Parameters of handler:**

| Parameter | Type | Description |
| --- | --- | --- |
| body | Body | The body found in the raycast. |
| point | Vec2 | The point where the ray intersects with the body. |
| normal | Vec2 | The normal vector at the point of intersection. |

* **Returns of handler:**

| Return Type | Description |
| --- | --- |
| boolean | Whether to continue casting the ray for more bodies, returns true to stop, false otherwise. |

## setIterations

**Type:** Function.

**Description:**

&emsp;&emsp;Sets the number of velocity and position iterations to perform in the physics world.

**Signature:**
```tl
setIterations: function(self: PhysicsWorld, velocityIter: integer, positionIter: integer)
```

**Parameters:**

| Parameter | Type | Description |
| --- | --- | --- |
| velocityIter | integer | The number of velocity iterations to perform. |
| positionIter | integer | The number of position iterations to perform. |

## setShouldContact

**Type:** Function.

**Description:**

&emsp;&emsp;Sets whether two physics groups should make contact with each other or not.

**Signature:**
```tl
setShouldContact: function(self: PhysicsWorld, groupA: integer, groupB: integer, contact: boolean)
```

**Parameters:**

| Parameter | Type | Description |
| --- | --- | --- |
| groupA | integer | The first physics group. |
| groupB | integer | The second physics group. |
| contact | boolean | Whether the two groups should make contact with each other. |

## getShouldContact

**Type:** Function.

**Description:**

&emsp;&emsp;Gets whether two physics groups should make contact with each other or not.

**Signature:**
```tl
getShouldContact: function(self: PhysicsWorld, groupA: integer, groupB: integer): boolean
```

**Parameters:**

| Parameter | Type | Description |
| --- | --- | --- |
| groupA | integer | The first physics group. |
| groupB | integer | The second physics group. |

**Returns:**

| Return Type | Description |
| --- | --- |
| boolean | Whether the two groups should make contact with each other. |