Game Development Reference
In-Depth Information
The principles of a bridge-building game
Variants of bridge-building games have been around for a long time. The classical
Bridge
Builder
is a 2D physics game where the player is required connect beams to create a bridge
strong enough for a train (or some other moving object) to pass.
This recipe will describe most of the core functionalities needed to create such a game, in-
cluding making the objects stay 2D and not wander off on the
z
axis.
We'll have some basic controls for the game:
• Left-click will select a previously built node in the bridge
• Right-click will add a new node or connect two previously built ones
• The Space bar will turn on the physics
The following figure shows a bridge:
