mods/minecart/init.lua

   1 local pool = {}
   2
   3 local dirs = {
   4         {x= 1,y= 0,z= 0},
   5         {x=-1,y= 0,z= 0},
   6
   7         {x= 1,y= 1,z= 0},
   8         {x=-1,y= 1,z= 0},
   9
  10         {x= 1,y=-1,z= 0},
  11         {x=-1,y=-1,z= 0},
  12
  13         {x= 0,y= 0,z= 1},
  14         {x= 0,y= 0,z=-1},
  15
  16         {x= 0,y= 1,z= 1},
  17         {x= 0,y= 1,z=-1},
  18
  19         {x= 0,y=-1,z= 1},
  20         {x= 0,y=-1,z=-1},
  21 }
  22
  23 local axis_order = {
  24
  25 }
  26 local function data_injection(pos,data)
  27         if data then
  28                 pool[minetest.hash_node_position(pos)] = true
  29         else
  30                 pool[minetest.hash_node_position(pos)] = nil
  31         end
  32 end
  33
  34
  35 local function create_axis(pos)
  36         local possible_dirs = {}
  37         for _,dir in pairs(dirs) do
  38                 local pos2 = vector.add(pos,dir)
  39                 if pool[minetest.hash_node_position(pos2)] then
  40                         table.insert(possible_dirs,dir)
  41                 end
  42         end
  43         return(possible_dirs)
  44 end
  45
  46 local function collision_detect(self)
  47         if not self.axis_lock then return end
  48         local pos = self.object:get_pos()
  49
  50         for _,object in ipairs(minetest.get_objects_inside_radius(pos, 1)) do
  51                 if object:is_player() then
  52                         local pos2 = object:get_pos()
  53                         if self.axis_lock == "x" then
  54                                 local velocity = 1-vector.distance(vector.new(pos.x,0,0),vector.new(pos2.x,0,0))
  55                                 print(velocity)
  56                                 local dir = vector.direction(vector.new(pos2.x,0,0),vector.new(pos.x,0,0))
  57                                 self.object:add_velocity(vector.multiply(dir,velocity))
  58                                 self.dir = dir
  59                         elseif self.axis_lock == "z" then
  60                                 local velocity = 1-vector.distance(vector.new(0,0,pos.z),vector.new(0,0,pos2.z))
  61                                 local dir = vector.direction(vector.new(0,0,pos2.z),vector.new(0,0,pos.z))
  62                                 self.object:add_velocity(vector.multiply(dir,velocity))
  63                                 self.dir = dir
  64                         end
  65                         return
  66                 end
  67         end
  68 end
  69
  70
  71 local function rail_brain(self,pos)
  72         if not self.dir then return end
  73
  74         if self.dir then print(dump(self.dir)) end
  75
  76         local pos2 = self.object:get_pos()
  77
  78         local dir = self.dir
  79
  80         if dir.x < 0 and pos2.x < pos.x then
  81                 print("check dat rail boi")
  82         elseif dir.x > 0 and pos2.x > pos.x then
  83                 print("check dat rail boi 2")
  84         elseif dir.z < 0 and pos2.z < pos.z then
  85                 print("check dat rail boi 3")
  86         elseif dir.z > 0 and pos2.z > pos.z then
  87                 print("wow this actually wurkz")
  88         end
  89 end
  90
  91
  92
  93
  94 local minecart = {}
  95
  96 minecart.on_step = function(self,dtime)
  97         local pos = vector.round(self.object:get_pos())
  98         if not self.axis_lock then
  99                 local possible_dirs = create_axis(pos)
 100                 for _,dir in pairs(possible_dirs) do
 101                         if dir.x ~=0 then
 102                                 self.axis_lock = "x"
 103                                 break
 104                         elseif dir.z ~= 0 then
 105                                 self.axis_lock = "z"
 106                                 break
 107                         end
 108                 end
 109         else
 110                 collision_detect(self)
 111                 rail_brain(self,pos)
 112         end
 113 end
 114
 115 minecart.on_rightclick = function(self,clicker)
 116 end
 117
 118 --get old data
 119 minecart.on_activate = function(self,staticdata, dtime_s)
 120         self.object:set_armor_groups({immortal=1})
 121         if string.sub(staticdata, 1, string.len("return")) ~= "return" then
 122                 return
 123         end
 124         local data = minetest.deserialize(staticdata)
 125         if type(data) ~= "table" then
 126                 return
 127         end
 128
 129 end
 130
 131 minecart.get_staticdata = function(self)
 132         return minetest.serialize({
 133         })
 134 end
 135
 136
 137
 138 minecart.initial_properties = {
 139         physical = false, -- otherwise going uphill breaks
 140         collisionbox = {-0.4, -0.5, -0.4, 0.4, 0.45, 0.4},--{-0.5, -0.4, -0.5, 0.5, 0.25, 0.5},
 141         visual = "mesh",
 142         mesh = "minecart.x",
 143         visual_size = {x=1, y=1},
 144         textures = {"minecart.png"},
 145 }
 146
 147
 148 minecart.on_punch = function(self,puncher, time_from_last_punch, tool_capabilities, dir, damage)
 149         --local obj = minetest.add_item(self.object:getpos(), "minecart:minecart")
 150         --self.object:remove()
 151 end
 152
 153
 154
 155 minetest.register_entity("minecart:minecart", minecart)
 156
 157
 158
 159
 160
 161
 162
 163
 164
 165
 166
 167
 168 minetest.register_craftitem("minecart:minecart", {
 169         description = "Minecart",
 170         inventory_image = "minecartitem.png",
 171         wield_image = "minecartitem.png",
 172         on_place = function(itemstack, placer, pointed_thing)
 173                 if not pointed_thing.type == "node" then
 174                         return
 175                 end
 176
 177                 local sneak = placer:get_player_control().sneak
 178                 local noddef = minetest.registered_nodes[minetest.get_node(pointed_thing.under).name]
 179                 if not sneak and noddef.on_rightclick then
 180                         minetest.item_place(itemstack, placer, pointed_thing)
 181                         return
 182                 end
 183
 184                 if minetest.get_item_group(minetest.get_node(pointed_thing.under).name, "rail")>0 then
 185                         minetest.add_entity(pointed_thing.under, "minecart:minecart")
 186                 else
 187                         return
 188                 end
 189
 190                 itemstack:take_item()
 191
 192                 return itemstack
 193         end,
 194 })
 195
 196 minetest.register_craft({
 197         output = "minecart:minecart",
 198         recipe = {
 199                 {"main:iron", "", "main:iron"},
 200                 {"main:iron", "main:iron", "main:iron"},
 201         },
 202 })
 203
 204
 205
 206
 207
 208 minetest.register_node("minecart:rail",{
 209         description = "Rail",
 210         wield_image = "rail.png",
 211         tiles = {
 212                 "rail.png", "railcurve.png",
 213                 "railt.png", "railcross.png"
 214         },
 215         drawtype = "raillike",
 216         paramtype = "light",
 217         sunlight_propagates = true,
 218         is_ground_content = false,
 219         walkable = false,
 220         node_placement_prediction = "",
 221         selection_box = {
 222                 type = "fixed",
 223                 fixed = {-1/2, -1/2, -1/2, 1/2, -1/2+1/16, 1/2},
 224         },
 225         sounds = main.stoneSound(),
 226         after_place_node = function(pos)
 227                 data_injection(pos,true)
 228         end,
 229         after_destruct = function(pos)
 230                 data_injection(pos)
 231         end,
 232         groups={stone=1,wood=1,rail=1,attached_node=1},
 233 })
 234
 235
 236 minetest.register_lbm({
 237         name = "minecart:rail",
 238         nodenames = {"minecart:rail"},
 239         run_at_every_load = true,
 240         action = function(pos)
 241                 data_injection(pos,true)
 242                 print("buildin dat cash")
 243         end,
 244 })
 245
 246 minetest.register_craft({
 247         output = "minecart:rail 32",
 248         recipe = {
 249                 {"main:iron","","main:iron"},
 250                 {"main:iron","main:stick","main:iron"},
 251                 {"main:iron","","main:iron"}
 252         }
 253 })