🤖 CROBOTS2000 🤖

A silly remake of the vintage game CROBOTS with 2D graphics and rigid body physics!

Made for fun with the OCaml bindings of the raylib library.

Play

dune exec crobots <robot-files>

Watch the sample robots in the test directory compete, or write and test your own robots!

Robot API

The physics engine introduces a few changes to the robot API. The robot programming style is a bit different than the original game, in that:

• The new heading primitive can be used to check a robot's current heading

• A change in a robot's heading is not instantaneous but requires a number of CPU cycles to reach a desired angle.

  In order to make the robot travel on a precise course (e.g. towards the top left corner of the field, 135°), you call the drive primitive with a desired speed of 0 to begin turning the robot in place:

  drive(course, 0);

  Cycle until the desired heading is met:

  while (heading() != course) ; // do nothing

  Then set off with your desired speed:

  drive(course, speed);

  The effect of this procedure is shown in the right animation: the robot first rotates then moves in a clean straight line, whereas in the left simulation the robot turns and accelerates at the same time, missing the top-left corner.

  

• Acceleration takes a few more CPU cycles than the original game. Before testing a robot's speed against 0 (i.e. the robot stopping due to damage or collision), make sure it is actually accelerating (i.e. the robot approaching a non-null speed), otherwise you'd risk stopping the robot unintentionally.