S12 Documentation

Introduction

S12 is a game based on the model of BridgeBuilder.
The goal is to construct a bridge over a valley which is robust enough for a train to be able to cross it without causing it to collapse.

Requirements

• OpenGL
• SDL

Running S12

Run S12 from the command line using the following syntax:

Usage: S12 [-b <bridgeFile>] [-t <trainFile>] [-f]
Options:
  -b <bridgeFile> use bridge described in <bridgeFile> instead of default bridge
  -t <trainFile>  use train described in <trainFile> instead of default train
  -f              start in full screen mode

For instance, to run S12 with the bridge data/level3.brg and use the train data/steamer1.trn in full screen mode type:

./S12 -b data/level3.brg -t data/steamer1.trn -f

Interaction

• create new bridge edges using drag & drop with the left mouse button
• delete bridge edges and vertices using the right mouse button
• press Ctrl+[1..4] to save the current bridge to one of the 4 storage locations
• press [1..4] to retrieve a saved bridge
• press c to clear the current bridge
• press s to start/stop the simulation
• press t to start/stop the train
• press escape to quit

Building S12

S12 can be built under Linux, Windows (under MSYS and the MinGW compiler) or Mac OS X (using the Fink SDL package) using the respective Makefile. You might have to adjust it to your personal needs...

Technical features

• mass spring systems to simulate the bridge and the train
• particle systems to simulate smoke and "puffs" in the event of a broken bridge edge
• leap frog integration
• point damping

Authors

• Markus Liechti (liechtim@student.ethz.ch)
• Yoshimi Takano (yoshi@student.ethz.ch)
• Stefan Wismer (swismer@student.ethz.ch)

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