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OpenTTD GitHub
Contributing to OpenTTD - guidelines
OpenTTD Doxygen
Coding style
Compiling OpenTTD
Debugging
Add a setting
Add a squirrel function
Understanding the SaveGame handler
Bumping the savegame version
Doing an OpenTTD release
Manual of style
Format of langfiles
Using OpenTTD strings
List of special strings
Using the window system
Colour codes that exist in OpenTTD
Adding a text box
Understanding the widget focus system
GUI style guide
The OpenTTD TCP protocol
The OpenTTD UDP protocol
Debugging desyncs
Server Admin Port development
The console window
Console commands
Console variables
Using console scripting
Adding functions/commands to the console
Adding variables to the console
Console development history
Graphics and similar (NewGRF)
AI framework (NoAI)
GameScript framework (NoGO)
Social Integration
Map array (landscape grid)
Vehicles
Pathfinding
Train acceleration
Sound IDs
A vehicle is one of the fundamental entities in the game.
Types
There are 6 recognised vehicle types in the VehicleType enum:
- VEH_TRAIN: A train or carriage. Makes use of a linked list for the carriages.
- VEH_ROAD: A bus or truck. Will probably use the same linked list for articulated vehicles.
- VEH_SHIP
- VEH_AIRCRAFT
- VEH_SPECIAL
- VEH_DISASTER
Vehicle
The Vehicle struct has many variables and methods. Some of the important ones are:
| Variables | |
| VehicleTypeByte type | The vehicle type |
| PlayerByte owner | owner of the vehicle |
|
TileIndex tile int32 x_pos int32 y_pos byte z_pos |
Its current location x_pos and y_pos are world coordinates in 1/16th of a tile. |
|
byte spritenum uint16 cur_image byte sprite_width byte sprite_height |
Sprite infomation |
| TextEffectID fill_percent_te_id | a text-effect id to a loading indicator object |
|
uint16 max_speed byte subspeed |
Speed of the train |
|
byte acceleration uint16 max_speed |
Acceleration and max speed |
| byte vehstatus | Status |
|
CargoID cargo_type uint16 cargo_cap |
Type and amount of cargo |
| Order *orders | Linked list of orders |
| Methods | |
|
BeginLoading() LeaveStation() |
Entering and leaving a station |
There are many more methods and variables than this. For more info, see vehicle_base.h and vehicle.cpp. Vehicles are all subclassed, so there are other more specific methods and variables for trains, etc.