diff options
Diffstat (limited to 'helpers.lua')
| -rw-r--r-- | helpers.lua | 55 |
1 files changed, 28 insertions, 27 deletions
diff --git a/helpers.lua b/helpers.lua index cd67aa9..ef3752a 100644 --- a/helpers.lua +++ b/helpers.lua @@ -1,35 +1,32 @@ --advtrains by orwell96, see readme.txt
local print=function(t) minetest.log("action", t) minetest.chat_send_all(t) end
+advtrains.dir_trans_tbl={
+ [0]={x=0, z=1},
+ [1]={x=1, z=2},
+ [2]={x=1, z=1},
+ [3]={x=2, z=1},
+ [4]={x=1, z=0},
+ [5]={x=2, z=-1},
+ [6]={x=1, z=-1},
+ [7]={x=1, z=-2},
+ [8]={x=0, z=-1},
+ [9]={x=-1, z=-2},
+ [10]={x=-1, z=-1},
+ [11]={x=-2, z=-1},
+ [12]={x=-1, z=0},
+ [13]={x=-2, z=1},
+ [14]={x=-1, z=1},
+ [15]={x=-1, z=2},
+}
+
function advtrains.dirCoordSet(coord, dir)
- local x=0
- local z=0
- --local dir=(dirx+2)%8
- if(dir==6) then
- x=-1
- elseif (dir==7) then
- x=-1
- z=1
- elseif (dir==0) then
- z=1
- elseif (dir==1) then
- z=1
- x=1
- elseif (dir==2) then
- x=1
- elseif (dir==3) then
- x=1
- z=-1
- elseif (dir==4) then
- z=-1
- elseif (dir==5) then
- z=-1
- x=-1
+ local x,z
+ if advtrains.dir_trans_tbl[dir] then
+ x,z=advtrains.dir_trans_tbl[dir].x, advtrains.dir_trans_tbl[dir].z
else
error("advtrains: in helpers.lua/dirCoordSet() given dir="..(dir or "nil"))
end
-
-
return {x=coord.x+x, y=coord.y, z=coord.z+z}
end
function advtrains.dirToCoord(dir)
@@ -123,7 +120,7 @@ function advtrains.conway(midreal, prev, traintype)--in order prev,mid,return end
--is this next rail connecting to the mid?
- if not ( (((nextdir1+4)%8)==chkdir and nextrely1==chkrely-y_offset) or (((nextdir2+4)%8)==chkdir and nextrely2==chkrely-y_offset) ) then
+ if not ( (((nextdir1+8)%16)==chkdir and nextrely1==chkrely-y_offset) or (((nextdir2+8)%16)==chkdir and nextrely2==chkrely-y_offset) ) then
--print("[advtrains]in conway: next "..minetest.pos_to_string(next).." not connecting, trying one node below!")
next.y=next.y-1
y_offset=y_offset-1
@@ -133,7 +130,7 @@ function advtrains.conway(midreal, prev, traintype)--in order prev,mid,return --print("[advtrains]in conway: (at connecting if check again) one below "..minetest.pos_to_string(next).." is not a rail either, returning!")
return nil
end
- if not ( (((nextdir1+4)%8)==chkdir and nextrely1==chkrely) or (((nextdir2+4)%8)==chkdir and nextrely2==chkrely) ) then
+ if not ( (((nextdir1+8)%16)==chkdir and nextrely1==chkrely) or (((nextdir2+8)%16)==chkdir and nextrely2==chkrely) ) then
--print("[advtrains]in conway: one below "..minetest.pos_to_string(next).." rail not connecting, returning!")
--print("[advtrains] in order mid1,2,next1,2,chkdir "..middir1.." "..middir2.." "..nextdir1.." "..nextdir2.." "..chkdir)
return nil
@@ -143,6 +140,10 @@ function advtrains.conway(midreal, prev, traintype)--in order prev,mid,return --print("[advtrains]conway found rail.")
return vector.add(advtrains.round_vector_floor_y(next), {x=0, y=nextrailheight, z=0}), chkdir
end
+--TODO use this
+function advtrains.oppd(dir)
+ return ((dir+8)%16)
+end
function advtrains.round_vector_floor_y(vec)
return {x=math.floor(vec.x+0.5), y=math.floor(vec.y), z=math.floor(vec.z+0.5)}
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