diff options
Diffstat (limited to 'crawl-ref/source/misc.cc')
| -rw-r--r-- | crawl-ref/source/misc.cc | 27 |
1 files changed, 25 insertions, 2 deletions
diff --git a/crawl-ref/source/misc.cc b/crawl-ref/source/misc.cc index d024069bb8..40ffda768f 100644 --- a/crawl-ref/source/misc.cc +++ b/crawl-ref/source/misc.cc @@ -1203,12 +1203,35 @@ void generate_random_blood_spatter_on_level() { int cx, cy; int startprob; - int max_cluster = 7 + random2(9); + + // startprob is used to initialize the chance for neighbours being + // spattered, which will be decreased by 1 per recursion round. + // We then use one_chance_in(chance) to determine whether to spatter a + // given grid or not. Thus, startprob = 1 means that initially all + // surrounding grids will be spattered (3x3), and the _higher_ startprob + // the _lower_ the overall chance for spattering and the _smaller_ the + // bloodshed area. + + const int max_cluster = 7 + random2(9); + + // Lower chances for large bloodshed areas if we have many clusters, + // but increase chances if we have few. + // Chances for startprob are [1..3] for 7-9 clusters, + // ... [1..4] for 10-12 clusters, and + // ... [2..5] for 13-15 clusters. + + int min_prob = 1; + int max_prob = 4; + if (max_cluster < 10) + max_prob--; + else if (max_cluster > 12) + min_prob++; + for (int i = 0; i < max_cluster; i++) { cx = 10 + random2(GXM - 10); cy = 10 + random2(GYM - 10); - startprob = 1 + random2(4); + startprob = min_prob + random2(max_prob); if (allow_bleeding_on_square(cx, cy)) env.map[cx][cy].property = FPROP_BLOODY; |