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Difference between revisions of "World units"
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A world unit is the basic unit of measure when dealing with BZFlag. World units have no real-world counterpart, as they are a purely virtual concept, but they can be though of to be equivalent to about 1 meter in length if you assume a roughly real world sized [[tank]]. | A world unit is the basic unit of measure when dealing with BZFlag. World units have no real-world counterpart, as they are a purely virtual concept, but they can be though of to be equivalent to about 1 meter in length if you assume a roughly real world sized [[tank]]. | ||
| − | Many [[Server Variables]] are specified in terms of world units or world units per second. | + | All coordinates in the map file are specified in World Units. Many [[Server Variables]] are specified in terms of world units or world units per second as well. |
| + | |||
| + | ==Origin== | ||
| + | The origin for the World coordinate system is the center of the map. | ||
| + | |||
| + | ==Orientation== | ||
| + | World Units are oriented in a normal right hand rule coordinate system with positive Z being the "UP" direction. | ||
| + | |||
| + | ===North=== | ||
| + | "north" on the in game radar is the positive Y direction in map coordinates. | ||
| + | |||
== Some useful measures at default settings == | == Some useful measures at default settings == | ||
Revision as of 01:41, 21 October 2009
A world unit is the basic unit of measure when dealing with BZFlag. World units have no real-world counterpart, as they are a purely virtual concept, but they can be though of to be equivalent to about 1 meter in length if you assume a roughly real world sized tank.
All coordinates in the map file are specified in World Units. Many Server Variables are specified in terms of world units or world units per second as well.
Contents
Origin
The origin for the World coordinate system is the center of the map.
Orientation
World Units are oriented in a normal right hand rule coordinate system with positive Z being the "UP" direction.
North
"north" on the in game radar is the positive Y direction in map coordinates.
Some useful measures at default settings
| Jump height limit (next to impossible) | See below | 18.42 |
| Doable jump height | See below | 17.0 |
| Tank length | _tankLength | 8.04 |
| Tank width | _tankWidth | 2.8 |
| Tank height | _tankHeight | 2.05 |
| Barrel height | _muzzleHeight | 1.57 |
| Drivable bump height | _bumpHeight | 0.33 |
Calculating jump height
Jump height is determined by the gravity and jump velocity settings on the server (see Server Variables for details). Note that the jump velocity and gravity may be altered by flags including Low Gravity and Wings.
- Max jump height = -(_jumpVelocity)2 / (2 * (_gravity))
A typical BZFlag player can reliably jump a bit more than 90% of the maximum jump height.
