- Lua Game Development Cookbook
- Table of Contents
- Lua Game Development Cookbook
- Credits
- About the Author
- About the Reviewer
- www.PacktPub.com
- Preface
- 1. Basics of the Game Engine
- Introduction
- Preparing a basic file structure for the game engine
- Making a stack
- Making a queue
- Making a prioritized queue
- Extending ipairs for use in sparse arrays
- Creating Lua modules
- Handling errors with pcall, xpcall, and assert
- Using Lua with existing projects written in C/C++
- Getting LuaSDL for libSDL 1.2
- Designing the main application loop with LuaSDL
- 2. Events
- 3. Graphics – Common Methods
- Introduction
- Creating a window in libSDL
- Creating surfaces
- Surfaces manipulation
- Using colors
- Cursor manipulation
- Initializing the graphics mode with OpenGL
- Getting OpenGL information
- Using OpenGL extensions with GLEW and Lua
- Loading images with SDL_image
- Creating textures
- Loading and using bitmap fonts
- Loading and using TrueType fonts
- Displaying the text
- Creating texture atlas with the rover-design pattern
- Using tiles and tilesets in the game
- 4. Graphics – Legacy Method with OpenGL 1.x–2.1
- 5. Graphics – Modern Method with OpenGL 3.0+
- 6. The User Interface
- 7. Physics and Game Mechanics
- Introduction
- Using Box2D with Lua
- Using vector math
- Choosing the correct vector scaling for the physics engine
- Creating static and dynamic objects
- Setting up object properties
- Moving objects
- Setting up bullets
- Running the physics simulation
- Detecting object collision
- Setting up object collision filtering
- Setting up object joints
- 8. Artificial Intelligence
- 9. Sounds and Networking
- Index
The absolute mouse position is used primarily in window applications, where the mouse position constraints are desirable. The mouse position (0,0) corresponds to the upper-left corner of your application window. The maximum mouse position depends always on the size of the window. Take special care when the mouse cursor is outside the application window. The behavior of LuaSDL in this situation is highly dependent on the currently used operating system! In most cases, you won't get any events related to the mouse cursor motion.
The main advantage of this is that you can use the mouse cursor position reported directly by LuaSDL to precisely manipulate GUI elements inside of the application window. This approach is used also with tablet touch input devices, where you always get absolute positions.
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