mods/minecart/oldcode.txt

   1         local oldvel = self.object:getvelocity()
   2         local olddir = vector.normalize(oldvel)
   3         local x = math.abs(oldvel.x)
   4         local z = math.abs(oldvel.z)
   5         local pos = self.object:getpos()
   6         pos.y = pos.y - 0.5
   7         local pos2 = self.object:getpos()
   8         local pos3 = self.object:getpos()
   9         pos3.y = pos3.y + 0.5
  10
  11         local xer
  12         local zer
  13         local dir = {x=0,y=0,z=0}
  14
  15         --check direction
  16         --x axis
  17         if x > z then
  18                 if olddir.x>0 then xer=1 elseif olddir.x<0 then xer=-1 end
  19                 --check up
  20                 if minetest.get_node_group(minetest.get_node(vector.new(pos.x+xer,pos.y+1,pos.z)).name,"rail")>0 then
  21                         dir.x = xer
  22                         dir.y = 1
  23                 --check down
  24                 elseif minetest.get_node_group(minetest.get_node(vector.new(pos.x+xer,pos.y-1,pos.z)).name,"rail")>0 then
  25                         dir.x = xer
  26                         dir.y = -1
  27                 --check flat
  28                 elseif minetest.get_node_group(minetest.get_node(vector.new(pos.x+xer,pos.y,pos.z)).name,"rail")>0 then
  29                         dir.x = xer
  30                 end
  31         --z axis
  32         elseif z > x then
  33                 if olddir.z>0 then zer=1 elseif olddir.z<0 then zer=-1 end
  34                 --check up
  35                 if minetest.get_node_group(minetest.get_node(vector.new(pos.x,pos.y+1,pos.z+zer)).name,"rail")>0 then
  36                         dir.z = zer
  37                         dir.y = 1
  38                 --check down
  39                 elseif minetest.get_node_group(minetest.get_node(vector.new(pos.x,pos.y-1,pos.z+zer)).name,"rail")>0 then
  40                         dir.z = zer
  41                         dir.y = -1
  42                 --check flat
  43                 elseif minetest.get_node_group(minetest.get_node(vector.new(pos.x,pos.y,pos.z+zer)).name,"rail")>0 then
  44                         dir.z = zer
  45                 end
  46         end
  47
  48         --turn
  49         if vector.equals(dir,vector.new(0,0,0)) then
  50                 if x > z then
  51                         if minetest.get_node_group(minetest.get_node(vector.new(pos.x,pos.y,pos.z+1)).name,"rail")>0 then
  52                                 dir.z = 1
  53                                 --recenter on the rail
  54                                 self.object:moveto(vector.new(math.floor(pos2.x+0.5),pos2.y,pos2.z))
  55                         elseif minetest.get_node_group(minetest.get_node(vector.new(pos.x,pos.y,pos.z-1)).name,"rail")>0 then
  56                                 dir.z = -1
  57                                 --recenter on the rail
  58                                 self.object:moveto(vector.new(math.floor(pos2.x+0.5),pos2.y,pos2.z))
  59                         end
  60                 elseif z > x then
  61                         print("zzzz")
  62                         if minetest.get_node_group(minetest.get_node(vector.new(pos.x+1,pos.y,pos.z)).name,"rail")>0 then
  63                                 dir.x = 1
  64                                 --recenter on the rail
  65                                 self.object:moveto(vector.new(pos2.x,pos2.y,math.floor(pos2.z+0.5)))
  66                         elseif minetest.get_node_group(minetest.get_node(vector.new(pos.x-1,pos.y,pos.z)).name,"rail")>0 then
  67                                 dir.x = -1
  68                                 --recenter on the rail
  69                                 self.object:moveto(vector.new(pos2.x,pos2.y,math.floor(pos2.z+0.5)))
  70                         end
  71                 end
  72         end
  73         --apply
  74         --if not vector.equals(dir,vector.new(0,0,0)) then
  75         self.object:setvelocity(dir)
  76         --end
  77