Distance
From DoomRL Wiki
| Technical | |
| This article discusses technical aspects of DoomRL and will be of limited interest to most players. | |
| Distances |
9
98889
988777889
88776667788
8776655566778
8765544455678
876544333445678
876543222345678
87654321112345678
87654321@12345678
87654321112345678
876543222345678
876544333445678
8765544455678
8776655566778
88776667788
988777889
98889
9
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0.9.9.5 and Below
Sight is measured the same, but with a +1 radius.
0.9.9.6
Sight radius has been dropped by -1 in order to balance the glow/rendered light of the graphical tiles.
Distance in Doom RL is measured according to the so-called Angband metric. In short, distance is the long axis plus half the short axis. The result is always rounded down.
The Angband metric is intended to approximate the usual Euclidean metric. If we round the Euclidean metric to the nearest integer, then the comparison is as follows. Up to a radius of 3, the metrics coincide exactly. Up to a radius of 11, the difference is within 1. In general (ignoring rounding), the Angband metric is always greater than the Euclidean metric, but not more than 12% greater.
