- CryENGINE 3 Cookbook
- CryENGINE 3 Cookbook
- Credits
- About the Authors
- www.PacktPub.com
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- Preface
- 1. CryENGINE 3: Getting Started
- 2. Sandbox Basics
- Introduction
- Creating a new level
- Generating a procedural terrain
- Terrain sculpting
- Setting up the terrain texture
- Placing the objects in the world
- Refining the object placement
- Utilizing the layers for multiple developer collaboration
- Switching to game mode
- Saving your level
- Exporting to an engine
- Essential game objects
- Running a map from the Launcher
- 3. Basic Level Layout
- 4. Environment Creation
- Introduction
- Creating your first time of day using the basic parameters
- Adjusting the terrain lighting
- Using the real-time Global Illumination
- Editing HDR lighting and the effects for flares
- Creating a global volumetric fog
- Creating a night scene with time of day parameters
- Color grading your level
- Creating a photo realistic ocean
- Improving your sky with clouds
- Making it rain in your level
- 5. Basic Artificial Intelligence
- 6. Asset Creation
- Introduction
- Installing the CryENGINE 3 plugin for 3D Studio Max
- Creating textures using CryTIF
- Setting up units to match CryENGINE in 3ds
- Basic material setup in 3ds
- Creating and exporting static objects
- Creating and exporting destroyable objects
- Using advanced material editor parameters to create animation
- Creating new material effects
- Creating image-based lighting
- 7. Characters and Animation
- 8. Creating Vehicles
- 9. Game Logic
- Introduction
- How to beam the player to a tag point from a trigger
- Making the AI go to a location when the player enters a proximity trigger
- Debugging the Flow Graph
- Creating a kill counter
- Rewarding the player for reaching a kill goal
- Displaying the player's health through a Flow Graph
- Changing the player camera through key input
- Creating a countdown timer
- 10. Track View and Cut-Scenes
- 11. Fun Physics
- 12. Profiling and Improving Performance
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- Support files, eBooks, discount offers and more
In this simple recipe, we will look at utilizing the GravityBox to set up a low gravity area within a level.
Keeping the default dimensions (20, 20, 20 meters), the only property here that we want to change is the gravity. The default settings in this box set this entire area within the level to be a zero gravity zone. To adjust the up/down gravity of this, we need to change the value of gravity and the Z axis.
To mimic normal gravity, this value would need to be set to the acceleration value of -9.81. To change this value to a lower gravity value, (something like the Moon's gravity) simply change it to a higher negative value such as -1.62.
The GravityBox is a simple bounding box which overrides the defined gravity in the code (-9.81) and sets its own gravity value within the bounding box. Anything physicalized and activated to receive physics updates will behave within the confines of these gravitational rules unless they fall outside of the bounding box.
Here are some useful tips about the gravity objects.
The uniform property within the GravityBox defines whether the GravityBox should use its own local orientation or the world's. If true, the GravityBox will use its own local rotation for the gravitational direction. If false, it will use the world's direction. This is used when you wish to have the gravity directed sideways. Set this value to True and then rotate the GravityBox onto its side.
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