New Ashenzari skill boost formula.

The scale is more regular. The formula is:
factor * piety_rank * skill_level

low bonus    -> factor = 3
medium bonus -> factor = 5
high bonus   -> factor = 7

          low           medium          high
     current  new   current  new   current  new
 1     0.7    1.7     1.0    2.5     1.2    3.1
 2     1.5    2.2     2.0    3.3     2.5    4.2
 3     2.2    2.6     3.0    3.8     3.7    4.9
 4     3.0    2.8     4.0    4.2     5.0    5.3
 5     3.7    3.0     5.0    4.4     6.2    5.6
 6     4.5    3.1     6.0    4.5     7.5    5.7
 7     4.2    3.1     5.7    4.5     7.2    5.7
 8     4.0    3.0     5.5    4.4     7.0    5.7
 9     3.7    2.9     5.2    4.3     6.7    5.6
10     3.5    2.8     5.0    4.2     6.5    5.5
11     3.2    2.7     4.7    4.2     6.2    5.5
12     3.0    2.6     4.5    4.1     6.0    5.4
13     2.7    2.6     4.2    4.1     5.7    5.4
14     2.5    2.5     4.0    4.0     5.5    5.3
15     2.2    2.5     3.7    4.0     5.2    5.2
16     2.0    2.5     3.5    3.9     5.0    5.1
17     1.7    2.4     3.2    3.8     4.7    5.0
18     1.5    2.3     3.0    3.6     4.5    4.9
19     1.2    2.2     2.7    3.5     4.2    4.8
20     1.0    2.2     2.5    3.5     4.0    4.7
21     0.7    2.1     2.2    3.4     3.7    4.6
22     0.5    2.1     2.0    3.3     3.5    4.5
23     0.2    2.0     1.7    3.3     3.2    4.0
24     0.0    2.0     1.5    3.0     3.0    3.0
25     0.0    1.9     1.2    2.0     2.0    2.0
26     0.0    1.0     1.0    1.0     1.0    1.0
27     0.0    0.0     0.0    0.0     0.0    0.0

1 files changed, 1 insertions, 0 deletions

diff --git a/crawl-ref/source/skills2.h b/crawl-ref/source/skills2.h
index 109528d25e..ae3f0506a9 100644
--- a/crawl-ref/source/skills2.h
+++ b/crawl-ref/source/skills2.h
@@ -33,6 +33,7 @@ struct skill_state
     void restore_training();
 };
 
+int get_skill_progress(skill_type sk, int level, int points, int scale);
 int get_skill_progress(skill_type sk, int scale);
 int get_skill_percentage(const skill_type x);
 const char *skill_name(skill_type which_skill);