aboutsummaryrefslogtreecommitdiff
path: root/init.lua
blob: 13a2398c1bfc36be4a61adcebab2ab5a668e927e (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444




local mod_name = minetest.get_current_modname()

local function log(level, message)
    minetest.log(level, ('[%s] %s'):format(mod_name, message))
end

log('action', 'CSM cs_waypoints loading...')

minetest.display_chat_message("CSM cs_waypoints loading...")

local mod_storage = minetest.get_mod_storage()


local search_delta_default = 10

--
--
-- local functions
--
--

local function load_waypoints()
    if string.find(mod_storage:get_string('waypoints'), 'return') then
        return minetest.deserialize(mod_storage:get_string('waypoints'))
    else
        return {}
    end
end

local function load_waypoints_stack()
    if string.find(mod_storage:get_string('waypoints_stack'), 'return nil') then
       return {}
    end
    if string.find(mod_storage:get_string('waypoints_stack'), 'return') then
        return minetest.deserialize(mod_storage:get_string('waypoints_stack'))
    else
        return {}
    end
end

local waypoints = load_waypoints()


local function safe(func)
    -- wrap a function w/ logic to avoid crashing the game
    local f = function(...)
        local status, out = pcall(func, ...)
        if status then
            return out
        else
            log('warning', 'Error (func):  ' .. out)
            return nil
        end
    end
    return f
end


local function round(x)
   return math.floor(x+0.5)
end


local function pairsByKeys(t, f)
    local a = {}
    for n in pairs(t) do
        table.insert(a, n)
    end
    table.sort(a, f)
    local i = 0
    return function()
        i = i + 1
        if a[i] == nil then
            return nil
        else
            return a[i], t[a[i]]
        end
    end
end


local function lc_cmp(a, b)
    return a:lower() < b:lower()
end


local function tostring_point(point)
    return ('%i %i.5 %i'):format(round(point.x), round(point.y), round(point.z))
end




local function teleport_to(position_name)
   local wpname = position_name
   local waypoint = waypoints[wpname]
   if waypoint ~= nil then
      minetest.run_server_chatcommand('teleport', tostring_point(waypoint))
   else
      minetest.display_chat_message(('waypoint "%s" not found.'):format(wpname))
   end
   return true
end

local function show_pos(position_name)
   local wpname = position_name
   local waypoint = waypoints[wpname]
   local rg = ""
   if waypoint ~= nil then
      rg = wpname .. ": " .. tostring_point(waypoint)
   else
      rg = ('waypoint "%s" not found.'):format(wpname)
   end
   return true,rg
end



local function stack_push()
   local point = minetest.localplayer:get_pos()
   wp_stack = load_waypoints_stack()
   count = #wp_stack +1
   wp_stack[count] = point
   mod_storage:set_string('waypoints_stack', minetest.serialize(wp_stack))
end

local function stack_pop()
   wp_stack = load_waypoints_stack()
   count = 0
   if nil ~= wp_stack then count = #wp_stack end
   if count<1 then
      minetest.display_chat_message('stack empty - no teleporting')
      return
   end
   minetest.run_server_chatcommand('teleport', tostring_point(wp_stack[count]))
   wp_stack[count] = nil
   mod_storage:set_string('waypoints_stack', minetest.serialize(wp_stack))
   return true   
end

local function stack_show()
   wp_stack = load_waypoints_stack()
   count = 0
   if nil ~= wp_stack then count = #wp_stack end
   if count<1 then
      minetest.display_chat_message('stack empty')
      return true
   end
   output = ""
   for i = count,1,-1 do
      output = output .. tostring(i) .. "  " ..  tostring_point(wp_stack[i]).."\n"
   end
   return true ,output
end

local function stack_clear()
   mod_storage:set_string('waypoints_stack', minetest.serialize(nil))
end

local function  stack_search(d)   
   local delta = d
   if delta then       delta = tonumber(delta) end
   if nil == delta then delta = search_delta_default  end 
   if delta < 0 then delta = 0 end
   
   here = minetest.localplayer:get_pos()
   minetest.display_chat_message(
                ('%s : %s'):format("current position", tostring_point(here))
            )
   for name,pos in pairsByKeys(waypoints, lc_cmp) do
      if math.abs(here.y-pos.y) <= delta then
	 if math.abs(here.x-pos.x) <= delta then
	    if math.abs(here.z-pos.z) <= delta then
	       minetest.display_chat_message(
		     ('%s -> %s'):format(name, tostring_point(pos)))
	    end
	 end
      end
   end
   return true
end

local function position_shift(p)   
   local param = p
   if not p then return end
   while p:sub(1,1) == " " and p:len()> 3 do
      p = p:sub(2,99)
   end
   if p:len()<3 then return end
   direction = p:sub(1,1)
   d = ""
   if direction == "x" or direction == "X" then d = "x" end 
   if direction == "y" or direction == "Y" then d = "y" end 
   if direction == "z" or direction == "Z" then d = "z" end 
   if d == "" then return end

   here = minetest.localplayer:get_pos()

   distance = tonumber(p:sub(2,8))
   if not distance then return end
   if distance == 0 then return end
   
   here[d] = here[d] + distance 
   here.y  = here.y  - 1        -- correction

   minetest.run_server_chatcommand('teleport', tostring_point(here))

end

-- new shift with more than one possible shift coordinate
-- only the last value for one coordinate is used
local function position_shift2(p)   
   if not p then return end

   param = p:split(" ")

   shift = {}
   shift.x = 0
   shift.y = 0
   shift.z = 0

   vp = 1
   while (vp+1 <= #param )
   do
      direction = param[vp]
      d = ""
      if direction == "x" or direction == "X" then d = "x" end 
      if direction == "y" or direction == "Y" then d = "y" end 
      if direction == "z" or direction == "Z" then d = "z" end 
      if d ~= "" then 
	 distance = tonumber(param[vp+1])
	 if not distance then 
	    distance = 0
	 end
	 shift[direction] = distance
      end
      vp = vp+2
   end

   if shift.x == 0 and shift.y == 0 and shift.z == 0 then
      return
   end

   here = minetest.localplayer:get_pos()

   here.x = here.x+shift.x
   here.y = here.y+shift.y
   here.z = here.z+shift.z

   here.y  = here.y  - 1        -- correction

   minetest.run_server_chatcommand('teleport', tostring_point(here))

end


local function calc_distance(wp)
   local wpname = wp
   local waypoint = waypoints[wpname]
   local rg = ""
   if waypoint == nil then
      rg = ('waypoint "%s" not found.'):format(wp)
   else
      here = minetest.localplayer:get_pos()
      dx = math.abs(here.x-waypoint.x)
      dy = math.abs(here.y-waypoint.y)
      dz = math.abs(here.z-waypoint.z)
      l1 = "x: " .. tostring(round(100*dx)/100) .. "   y: " 
	 .. tostring(round(100*dy)/100) .. "   z: " 
	 .. tostring(round(100*dz)/100)
      delta_hor = math.floor(math.sqrt(dx*dx+dz*dz)*100)/100
      delta_3d =  math.floor(math.sqrt(dx*dx+dy*dy+dz*dz)*100)/100
      l2 = "distance: " .. tostring(delta_3d) 
	 .. "    horizontal distance: " .. tostring(delta_hor) 
      rg = l1 .. "\n" .. l2
   end


   return true,rg
end


--
--
-- chat commands
--
--


minetest.register_chatcommand('wp_set', {
    params = '<name>',
    description = 'set a waypoint',
    func = safe(function(param)
        waypoints = load_waypoints()
        local point = minetest.localplayer:get_pos()
        waypoints[param] = point
        mod_storage:set_string('waypoints', minetest.serialize(waypoints))

        minetest.display_chat_message(
            ('set waypoint "%s" to "%s"'):format(param, tostring_point(point))
        )
    end),
})


minetest.register_chatcommand('wp_unset', {
    params = '<name>',
    description = 'remove a waypoint',
    func = safe(function(param)
        waypoints = load_waypoints()
        waypoints[param] = nil
        mod_storage:set_string('waypoints', minetest.serialize(waypoints))

        minetest.display_chat_message(
            ('removed waypoint "%s"'):format(param)
        )
    end),
})


minetest.register_chatcommand('wp_list', {
    params = '',
    description = 'lists waypoints',
    func = safe(function(_)
        for name, point in pairsByKeys(waypoints, lc_cmp) do
            minetest.display_chat_message(
                ('%s -> %s'):format(name, tostring_point(point))
            )
        end
    end),
})


minetest.register_chatcommand('tw', {
	params = '<waypoint>',
	description = 'teleport to a waypoint',
	func = safe(function(param)
		       safe(teleport_to(param))
		    end),
     }
  )


minetest.register_chatcommand('tw_push', {
	params = '<waypoint>',
	description = 'teleport to a waypoint and save old position',
	func = safe(function(param)
		       stack_push()
		       safe(teleport_to(param))
		    end),
     }
  )

-- minetest.register_chatcommand('wp_push', {
-- 	params = '<position/player>',
-- 	description = 'teleport to a position/player and save old position',
-- 	func = safe(function(param)
-- 		       stack_push()
-- 		       minetest.run_server_chatcommand('teleport', param)
-- 		    end),
--      }
--   )

minetest.register_chatcommand('tw_pop', {
	params = '',
	description = 'return to the last saved position',
	func = stack_pop,
     }
  )


minetest.register_chatcommand('wp_stack', {
	params = '',
	description = 'shows the stack content',
	func = stack_show,
     }
  )

minetest.register_chatcommand('wp_stack_clear', {
	params = '',
	description = 'clears the position stack',
	func = stack_clear,
     }
  )


minetest.register_chatcommand('wp_search', {
	params = '(<delta>)',
	description = 'search a waypoint near the current position',
	func = stack_search,
     }
  )


minetest.register_chatcommand('wp_shift', {
	params = '<axis> <distance>',
	description = '"shift" the player along the given axis and add the given number',
	func = position_shift2,
     }
  )


minetest.register_chatcommand('wp_dist', {
	params = '<waypoint>',
	description = 'calculate the distance to a given waypoint',
	func = calc_distance,
     }
  )
        

minetest.register_chatcommand('wp_show', {
	params = '<waypoint>',
	description = 'show the coordinates of a given waypoint',
	func = show_pos,
     }
  )
        

--  wp_grep    written by erstazi (player at Linux-Forks.de )
minetest.register_chatcommand('wp_grep', {
    params = '<name>',
    description = 'lists waypoints',
    func = safe(function(param)
        local wpname = param
        local count = 0
        for name, point in pairsByKeys(waypoints, lc_cmp) do
            if string.find(name, wpname) then
                count = count + 1
                minetest.display_chat_message(
                    ('%s -> %s'):format(name, tostring_point(point))
                )
            end
        end

        if count == 0 then
            minetest.display_chat_message(('waypoint "%s" not found.'):format(wpname))
        end
    end),
})