BBMOD_Camera

A constructor defined in BBMOD_Camera.gml

new BBMOD_Camera()

Description

A camera driven by angles and an object to follor, rather than raw vectors. Supports mouselook and both first-person and third-person views.

Properties

Name	Description
Direction	The camera's horizontal direction. Defaults to `0`.
DirectionUp	The camera's vertical direction. Automatically clamped between BBMOD_Camera.DirectionUpMin and BBMOD_Camera.DirectionUpMax. Defaults to `0`.
DirectionUpMax	Maximum angle that BBMOD_Camrea.DirectionUp can be. Use `undefined` to remove the limit. Default value is `89`.
DirectionUpMin	Minimum angle that BBMOD_Camrea.DirectionUp can be. Use `undefined` to remove the limit. Default value is `-89`.
FollowCurve	A function which remaps value in range `0..1` to a different `0..1` value. This is used to control the follow curve. If `undefined` then `lerp` is used. Defaults to `undefined`.
FollowFactor	Controls lerp factor between the previous camera position and the object it follows. Defaults to `1`, which means the camera is immediately moved to its target position. BBMOD_Camera.FollowObject must not be `undefined` for this to have any effect.
FollowObject	An ID of an instance to follow or `undefined`. The object must have a `z` variable (position on the z axis) defined! Defaults to `undefined`.
MouseLook	If `true` then mouselook is enabled. Defaults to `false`.
MouseSensitivity	Controls the mouselook sensitivity. Defaults to `1`.
Offset	The camera's offset from its target. Defaults to `(0, 0, 0)`.
Roll	The angle of camera's rotation from side to side. Default value is `0`.
Zoom	The camera's distance from its target. Use `0` for a first-person camera. Defaults to `0`.

Inherited properties

Name	Description
AspectRatio	The camera's aspect ratio. Defaults to `bbmod_window_get_width() / bbmod_window_get_height()`.
AudioListener	If `true` then the camera updates position and orientation of the 3D audio listener in the BBMOD_BaseCamera.update_matrices method. Defaults to `true`.
Exposure	The camera's exposure value. Defaults to `1`.
Fov	The camera's field of view. Defaults to `60`.
Height	The height of the orthographic projection. If `undefined`, then it is computed from BBMOD_BaseCamera.Width using BBMOD_BaseCamera.AspectRatio. Defaults to `undefined`.
Orthographic	Use `true` to enable orthographic projection. Defaults to `false` (perspective projection).
Position	The camera's position. Defaults to `(0, 0, 0)`.
Raw	An underlying GameMaker camera.
Target	A position where the camera is looking at.
Up	The up vector.
ViewProjectionMatrix	The `view * projection` matrix.
Width	The width of the orthographic projection. If `undefined`, then it is computed from BBMOD_BaseCamera.Height using BBMOD_BaseCamera.AspectRatio. Defaults to the window's width.
ZFar	Distance to the far clipping plane. Anything farther from the camera than this will not be visible. Defaults to `32768`.
ZNear	Distance to the near clipping plane. Anything closer to the camera than this will not be visible. Defaults to `0.1`.

Methods

Name	Description
set_mouselook	Enable/disable mouselook. This locks the mouse cursor at its current position when enabled.
update	Handles mouselook, updates camera's position, matrices etc.

Inherited methods

Name	Description
apply	Applies the camera.
destroy	Frees memory used by the struct.
get_forward	Retrieves a vector pointing forward in the camera's direction.
get_proj_mat	Retrieves camera's projection matrix.
get_right	Retrieves a vector pointing right relative to the camera's direction.
get_up	Retrieves a vector pointing up relative to the camera's direction.
get_view_mat	Retrieves camera's view matrix.
screen_point_to_vec3	Unprojects a position on the screen into a direction in world-space.
update	Updates camera's matrices.
update_matrices	Recomputes camera's view and projection matrices.
world_to_screen	Computes screen-space position from a vector in world-space.

Example

/// @desc Create event
camera = new BBMOD_Camera();
camera.FollowObject = OPlayer;
camera.Zoom = 0.0; // Use 0.0 for FPS, > 0.0 for TPS

/// @desc End-Step event
camera.set_mouselook(true);
camera.update(delta_time);

/// @desc Draw event
camera.apply();
// Render scene here...

Do you find this page helpful?