3rd Person Camera

Copyright © 2015-2016 Thomas Enzenebner
Version 1.0.4
t.enzenebner@gmail.com


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Upgrade from 1.0.3


I've added a namespace "ThirdPersonCamera" to all scripts, so if you happen to reference it somewhere in your projects just add the namespace at the top of the script: using ThirdPersonCamera;


Upgrade from <1.0.2


CameraController was split into CameraController and FreeForm. If you want the same functionality add the FreeForm component to the camera.


How To use 3rd Person Camera


There are several prebuilt camera gameobjects in the "Prefabs" folder to choose from. These are:

- 3rdPersonCamera_Basic: Most basic setup to enable clipping logic
- 3rdPersonCamera_FreeForm: 360 Orbit Camera with distance.
- 3rdPersonCamera_FreeFormAndTargeting: Orbit camera with lookAt/targeting support
- 3rdPersonCamera_Follow: smoothly aligns itself to the transform.forward of the target
- 3rdPersonCamera_Ultimate: FreeForm, Follow in one, controlled with DisableFollow

There's also 4 demoscenes to see how it's done. (Freeform demo, Follow demo, Freeform + Target demo, Ball demo)

There are 5 important components:
- CameraController
- Freeform
- Follow
- DisableFollow
- LockOnTarget/Targetable

Camera Controller Compontent:

The main part of the asset. Handles occlusion, smart pivoting and thickness checks.

There are a number of inputs and options you can tweak.
The most important is, which Transform to follow. Set this in "Target".

Options:
    - Target (transform): Set this to the transform the camera should follow
    - Offset vector (Vector3): change this vector to offset the pivot the camera is rotating around    
    - Smart Pivot (bool): Uses a pivot when the camera hits the ground and prevents moving the camera closer to the target
                          when looking up.
    - Occlusion Check (bool): Automatically reposition the camera when the character is blocked by an obstacle.
    - Thickness Check (bool): Thickness checking can be configured to ignore  smaller obstacles like sticks,
                              trees, etc... to not reposition or zoom in the camera.
    
    - Desired Distance (float): The distance how far away the camera should be
    - Collision Distance (float): Offset for the camera to not clip in objects        
    - Max Thickness (float): Adjusts the thickness check. The higher, the thicker the objects can be and there will be no
                             occlusion check. Warning: Very high values could make Occlusion checking obsolete and as a result
                             the followed target can be occluded
    - Max Thickness Iterations (int): The number of iterations with that the thickness is calculated. The higher, the more performance
                                it will take. Consider this as the number of objects the thickness ray will go through.
    - Zoom Out Step Value (float): The increment steps how fast the player can zoom out
    - Zoom Out Step Value per Frame (float): The increment steps how fast the camera can zoom out per frame
    - Collision Layer (LayerMask): Set this layermask to specify with which layers the camera should collide
    - Player Layer (int): Set this to your player layer so ground checks will ignore the player collider
    
Public variables:
    - bool playerCollision (get/set): Set to true to deactivate the player model    
    - float Distance (get): The current distance from the target plus offsetvector to the camera
    

Freeform compontent:
    This script handles the main rotation mechanic of the camera and is used for Freeform camera movement. It's not needed if you just
    want follow mode! It's dependency is the CameraController. It can be extended with the LockOnTarget component.
    
    - Camera Enabled (bool): Enables/Disables the camera rotation updates. Useful when you want to lock the camera in place or
                             to turn off the camera, for example, when hovering an interface element with the mouse
    - Camera Mode (enum): Always and hold - Either the camera rotation is always on or you have to press the mouse button to look around
    - Controller Enabled (bool): Enables controller support
    - Controller Invert Y (bool): Inverts the Y-axis
    - Mouse Invert Y (bool): Inverts the Y-Axis
    - Lock Mouse Cursor (bool): When looking around the mouse cursor will be locked    
    - Mouse Sensitivity (Vector2): Adjusts the sensitivity of looking around with the mouse
    - Controller Sensitivity (Vector2): Adjusts the sensitivity of looking around with the controller    
    
Follow component:
    This script handles following the target without any manual camera input. Useful for games that handle non-humanoid targets
    like racing or flying games. It's dependency is the CameraController.
    
    - Follow (bool): Enables/Disables the follow mode
    - Align on Slopes (bool): Enables/Disables automatic alignment of the camera when the target is moving on upward or downward slopes
    - Rotation Speed (float): How fast the camera should align to the transform.forward of the target
    - Look Backwards (bool): Enables/Disables looking backwards
    - Check Motion for Backwards (bool): Enables/Disables automatic checking when the camera should look back
    - Backwards Motion Threshold (float): The minimum magnitude of the motion vector when the camera should consider looking back
    - Angle Threshold (float): The minimum angle when the camera should consider looking back
    - Tilt Vector (Vector3): Applies an additional vector to tilt the camera in place. Useful when the offset vector gets too big
                            and leaves the collision box of the model
    - Layer Mask (LayerMask): The layer which should be used for the ground/slope checks. Usually just the Default layer.
    
LockOnTarget component:
    This script handles locking onto targets. It's dependencies are the CameraController and Freeform component.
    
    - Follow Target (Targetable): When not null, the camera will align itself to focus the Follow Target.
    - Rotation Speed (float): How fast the camera should align to the Follow Target

Targetable component:
    Every Target that's focusable needs a Targetable component.
   
    - Offset (Vector3): Give the target an offset when the transform.position is not fitting.
    
    
Additional setup for controller support:
For an easier setup use the preconfigured InputManager.asset from the 3rdPersonCamera/ProjectSettings folder.
!Caution! - Doing so will overwrite any InputManager data you already have!

If you get this warning: "Controller Error - Right axis not set in InputManager. Controller is disabled!"
you have to set the following axis in the InputManager:
"Right_3": 3rd axis
"Right_4": 4th axis
"Right_5": 5th axis
0 gravity, 0.3 dead, 1 sensitivity are good standard values.

If you need other names you can change them in the script.


Controls for demos


- WASD for movement
- Left/right click to rotate in freeform demo
- Right click, lock on target in target demo
- "r" key to reset car/ball
- "q" and "e" to rotate camera in ball demo


Version History


1.0.4
    - added smart DisableFollow script to utilize FreeForm + Follow
    - added Ball demo scene - added simple BallController script
    - added namespace "ThirdPersonCamera" to scripts
    - added more camera prefabs (Basic, Follow, FreeForm and Ultimate (Freeform/Follow/DisableFollow))
    - improved smart pivot transition from sloped surfaces
    - improved smoothness of alignToSlopes feature
    - improved camera when offset clips into geometry
    - restored Ethan crouch animation
    - removed Ethan air->ground crouch animation
1.0.3
    - added 2 new demo scenes (follow and follow+lock on)
    - added support for follow mode
    - added support for target locking
    - split CameraController into CameraController and Freeform
    - improved smart pivot and occurances of snapping
    - improved thickness check
    - changed hardcoded raycast layermasks to be configured in the editor
1.0.2
    - changed collision sensitivity to be spherical
    - removed camera position/rotation initialization, editor values are now taken
    - improved smart pivoting and smart pivoting start and resets
    - improved detection algorithm when multiple raycasts are hit
    - added terrain to demoscene
    - added RotateTo public method
    - added x/y, playerCollision, Distance public get or/and set
1.0.1
    - improved thickness checking
    - improved smart pivoting on slopes
    - added collision distance to improve clipping occurrences  
    - added automatic mouse cursor locking when looking around (currently unstable in WebGL)
    - added interface handling to demo scene  
    - changed sensitivity handling
    - removed unnecessary files
    - added a script only package
1.0.0
    - initial release