Difference between revisions of "Robocode/Game Physics"
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== Robocode Game Physics == | == Robocode Game Physics == | ||
| − | === Coordinates | + | === Coordinates and Direction Conventions === |
| − | [[Robocode]] is using the [http://en.wikipedia.org/wiki/Cartesian_coordinate_system Cartesian Coordinate System], which means that that the (0, 0) coordinate is located in the buttom left of the battle field. | + | {|border="0" style="text-align:left" |
| − | + | | Coordinates System | |
| + | | [[Robocode]] is using the [http://en.wikipedia.org/wiki/Cartesian_coordinate_system Cartesian Coordinate System], which means that that the (0, 0) coordinate is located in the buttom left of the battle field. | ||
| + | |- | ||
| + | | Clockwise Direction | ||
| + | | [[Robocode]] is using a clockwise direction convension where 0 / 360 deg is towards "North", 90 deg towards "East", 180 deg towards "South", and 270 deg towards "West". | ||
| + | |} | ||
| + | <br/> | ||
| + | Figure 1: | ||
http://www.ibm.com/developerworks/java/library/j-robocode2/fig2.gif | http://www.ibm.com/developerworks/java/library/j-robocode2/fig2.gif | ||
=== Time and distance measurements in Robocode === | === Time and distance measurements in Robocode === | ||
| − | {|border="0" | + | {|border="0" style="text-align:left" |
| − | | Time (t) | + | | Time (t) |
| + | | Robocode time is measured in "ticks". Each robot gets one turn per tick. 1 tick = 1 turn. | ||
|- | |- | ||
| − | | Distance Measurement | + | | Distance Measurement |
| + | | Robocode's units are basically measured in pixels, with two exceptions. First, all distances are measured with double precision, so you can actually move a fraction of a pixel. Second, Robocode automatically scales down battles to fit on the screen. In this case, the unit of distance is actually smaller than a pixel. | ||
|} | |} | ||
Revision as of 14:47, 28 November 2007
| This article is a stub. You can help RoboWiki by expanding it. |
This page describes the game physics of Robocode
Contents
Robocode Game Physics
Coordinates and Direction Conventions
| Coordinates System | Robocode is using the Cartesian Coordinate System, which means that that the (0, 0) coordinate is located in the buttom left of the battle field. |
| Clockwise Direction | Robocode is using a clockwise direction convension where 0 / 360 deg is towards "North", 90 deg towards "East", 180 deg towards "South", and 270 deg towards "West". |
Figure 1:
http://www.ibm.com/developerworks/java/library/j-robocode2/fig2.gif
Time and distance measurements in Robocode
| Time (t) | Robocode time is measured in "ticks". Each robot gets one turn per tick. 1 tick = 1 turn. |
| Distance Measurement | Robocode's units are basically measured in pixels, with two exceptions. First, all distances are measured with double precision, so you can actually move a fraction of a pixel. Second, Robocode automatically scales down battles to fit on the screen. In this case, the unit of distance is actually smaller than a pixel. |
Robot Movement Physics
Robocode Processing Loop
The order that Robocode runs is as follows:
- Battle view is (re)painted
- All robots execute their code until they take action (and then paused)
- Time is updated (time = time + 1)
- All bullets move and check for collisions
- All robots move (heading, accelration, velocity, distance, in that order)
- All robots perform scans (and collect team messages)
- All robots are resumed to take new action
- Each robot is processing its event queue
