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add getvar instruction, fix call (untested), make less work with strings and update documentation
M README.md M standardbefehlssatz.lua A util/standartbefehlssatz_doc.lua
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Hybrid Dog
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README.md
50
README.md
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@ -9,9 +9,55 @@ true/false: boolean (immediate)
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$hello nwae: string (immediate)
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nodolla: either a label is called so (immediate) or it's a variable
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```
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Types:
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e anything
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v any variable
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ve any set variable
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s string
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vs string variable
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n number
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vn number variable
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ui unsigned integer number
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b bool
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vn bool variable
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How to use this mod:
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Instructions:
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mov <v to>, <e from> Copies from into to.
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getvar <vs varname>[, <ve exists>] Sets varname to the current variable called <varname> if it's set. If exists is passed, it's set to a bool indicating whether the variable was set.
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add <vn to>, <n from> to += from
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add <vb to>, <b from> to = to and from
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add <vs to>, <s from> to = to .. from
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mul <vn to>, <n from> to *= from
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mul <vb to>, <b from> to = to or from
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mul <vs str>, <n cnt> str = str:rep(from)
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neg <vn num> num = -num
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neg <vb var> var = not var
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neg <vs str> str = str:rev()
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inv <vn num> num = 1 / num
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mod <vn num>, <n dv> num = num % dv
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jmp <ui p>[, <e c>] If c is not false, the instruction pointer is set to p. To disallow infinite loops, the program is interrupted after changing the ip, the mod should then consider restarting it.
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call <ui p> push the ip, then jmp p; used to execute subroutines
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ret pop something, then jmp there; used to exit subroutines
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push <e a>[, <e b>[, <e c>[…]]] put values onto the stack; from left to right
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pop <v a>[, <v b>[, <v c>[…]]] takes values from the stack and sets the passed variables to them; from left to right
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equal <v a>, <e b> a = a == b
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less <vn a>, <n b> a = a < b; after executing, a is a bool
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less <vs a>, <s b> a = a < b; less also works for strings
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usleep <n t> aborts the program for at least floor(max(0, t)) ms
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sleep <n t> executes usleep with t * 1000000 as argument
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get_us_time <v to> stores minetest.get_us_time() into to; can be used to measure time differences
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tostring <ve var> var = tostring(var)
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print <e a>[, <e b>[, <e c>[…]]] adds variables to the log, seperated by \t, \n is added at the end
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flush Output the log, this should vary for every mod.
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```
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How mods can use this mod:
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```
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local mylog = print
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@ -26,13 +72,13 @@ local function mystart(parsed_code)
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return true
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end
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end, parsed_code)
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thread:suscitate()
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mykeepalive(thread)
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end
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mystart(parsed_code)
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local function mykeepalive(thread)
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thread:suscitate()
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if not thread.stopped then
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return
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end
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@ -12,6 +12,15 @@ s = {
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return true, params[2]
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end,
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getvar = function(params, faden)
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local p = params[1]
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if type(p) ~= "string" then
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return false, UAT
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end
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p = faden.vars[p]
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return true, {p, params[2] and p ~= nil}
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end,
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add = function(params, faden)
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if #params ~= 2 then
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return false, WNOA
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@ -144,7 +153,7 @@ s = {
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if not subsucc then
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return false, SE .. msg
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end
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subsucc,msg = s.jmp({msg}, faden)
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subsucc,msg = s.jmp(msg, faden)
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if not subsucc then
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return false, SE .. msg
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end
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@ -194,8 +203,14 @@ s = {
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return false, WNOA
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end
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local p1,p2 = unpack(params)
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if type(p1) ~= "number"
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or type(p2) ~= "number" then
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local t1 = type(p1)
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local t2 = type(p2)
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if t1 ~= t2 then
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return false, "different argument types"
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end
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if t1 ~= "number"
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and t1 ~= "string" then
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return false, UAT
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end
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return true, p1 < p2
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66
util/standartbefehlssatz_doc.lua
Normal file
66
util/standartbefehlssatz_doc.lua
Normal file
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@ -0,0 +1,66 @@
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local types = {
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{"e", "anything"},
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{"v", "any variable"},
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{"ve", "any set variable"},
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{"s", "string"},
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{"vs", "string variable"},
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{"n", "number"},
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{"vn", "number variable"},
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{"ui", "unsigned integer number"},
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{"b", "bool"},
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{"vn", "bool variable"}
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}
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local instr = {
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{"mov", "<v to>, <e from>", "Copies from into to."},
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{"getvar", "<vs varname>[, <ve exists>]", "Sets varname to the current variable called <varname> if it's set. If exists is passed, it's set to a bool indicating whether the variable was set."},
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{"add", "<vn to>, <n from>", "to += from"},
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{"add", "<vb to>, <b from>", "to = to and from"},
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{"add", "<vs to>, <s from>", "to = to .. from"},
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{"mul", "<vn to>, <n from>", "to *= from"},
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{"mul", "<vb to>, <b from>", "to = to or from"},
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{"mul", "<vs str>, <n cnt>", "str = str:rep(from)"},
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{"neg", "<vn num>", "num = -num"},
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{"neg", "<vb var>", "var = not var"},
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{"neg", "<vs str>", "str = str:rev()"},
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{"inv", "<vn num>", "num = 1 / num"},
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{"mod", "<vn num>, <n dv>", "num = num % dv"},
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{"jmp", "<ui p>[, <e c>]", "If c is not false, the instruction pointer is set to p. To disallow infinite loops, the program is interrupted after changing the ip, the mod should then consider restarting it."},
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{"call", "<ui p>", "push the ip, then jmp p; used to execute subroutines"},
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{"ret", "", "pop something, then jmp there; used to exit subroutines"},
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{"push", "<e a>[, <e b>[, <e c>[…]]]", "put values onto the stack; from left to right"},
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{"pop", "<v a>[, <v b>[, <v c>[…]]]", "takes values from the stack and sets the passed variables to them; from left to right"},
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{"equal", "<v a>, <e b>", "a = a == b"},
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{"less", "<vn a>, <n b>", "a = a < b; after executing, a is a bool"},
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{"less", "<vs a>, <s b>", "a = a < b; less also works for strings"},
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{"usleep", "<n t>", "aborts the program for at least floor(max(0, t)) ms"},
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{"sleep", "<n t>", "executes usleep with t * 1000000 as argument"},
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{"get_us_time", "<v to>", "stores minetest.get_us_time() into to; can be used to measure time differences"},
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{"tostring", "<ve var>", "var = tostring(var)"},
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{"print", "<e a>[, <e b>[, <e c>[…]]]", "adds variables to the log, seperated by \\t, \\n is added at the end"},
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{"flush", "", "Output the log, this should vary for every mod."},
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}
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local mbl = 0
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local mal = 0
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for i = 1,#instr do
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local bef = instr[i]
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mbl = math.max(#bef[1], mbl)
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mal = math.max(#bef[2], mal)
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end
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local mtl = 2
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local o = "Types:\n\n"
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for i = 1,#types do
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local t = types[i]
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o = o .. t[1] .. (" "):rep(mtl - #t[1] + 2) .. t[2] .. "\n"
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end
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o = o .. "\n\nInstructions:\n\n"
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for i = 1,#instr do
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i = instr[i]
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o = o .. i[1] .. (" "):rep(mbl - #i[1] + 2) .. i[2] .. (" "):rep(mal - #i[2] + 2) .. i[3] .. "\n"
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end
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print(o)
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