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-rw-r--r--advtrains/debugringbuffer.lua44
1 files changed, 44 insertions, 0 deletions
diff --git a/advtrains/debugringbuffer.lua b/advtrains/debugringbuffer.lua
new file mode 100644
index 0000000..704c0c5
--- /dev/null
+++ b/advtrains/debugringbuffer.lua
@@ -0,0 +1,44 @@
+--so, some ringbuffers one for each train
+
+local ringbuflen=1000
+
+local ringbufs={}
+local ringbufcnt={}
+
+function advtrains.drb_record(tid, msg)
+ if not ringbufs[tid] then
+ ringbufs[tid]={}
+ ringbufcnt[tid]=0
+ end
+ ringbufs[tid][ringbufcnt[tid]]=msg
+ ringbufcnt[tid]=ringbufcnt[tid]+1
+ if ringbufcnt[tid] > ringbuflen then
+ ringbufcnt[tid]=0
+ end
+end
+function advtrains.drb_dump(tid)
+ atdebug("Debug ring buffer output for '"..tid.."':")
+ local stopcnt=ringbufcnt[tid]
+ if not stopcnt then
+ atdebug("ID unknown!")
+ return
+ end
+ repeat
+ atdebug(ringbufs[tid][ringbufcnt[tid]])
+ ringbufcnt[tid]=ringbufcnt[tid]+1
+ if ringbufcnt[tid] > ringbuflen then
+ ringbufcnt[tid]=0
+ end
+ until ringbufcnt[tid]==stopcnt
+end
+
+minetest.register_chatcommand("atdebug_show",
+ {
+ params = "train sid", -- Short parameter description
+ description = "Dump debug log", -- Full description
+ privs = {train_operator=true}, -- Require the "privs" privilege to run
+ func = function(name, param)
+ advtrains.drb_dump(param)
+ end, -- Called when command is run.
+ -- Returns boolean success and text output.
+ })