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add getvar instruction, fix call (untested), make less work with strings and update documentation

Browse Source 
M  README.md
M  standardbefehlssatz.lua
A  util/standartbefehlssatz_doc.lua
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Hybrid Dog
2016-12-31 17:16:16 +01:00
parent 5b1549498b
commit 1c9ed9a133
3 changed files with 132 additions and 5 deletions
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50
README.md
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@ -9,9 +9,55 @@ true/false: boolean (immediate)
$hello nwae: string (immediate)
nodolla: either a label is called so (immediate) or it's a variable
```
Types:
e anything
v any variable
ve any set variable
s string
vs string variable
n number
vn number variable
ui unsigned integer number
b bool
vn bool variable
How to use this mod:
Instructions:
mov <v to>, <e from> Copies from into to.
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.
add <vn to>, <n from> to += from
add <vb to>, <b from> to = to and from
add <vs to>, <s from> to = to .. from
mul <vn to>, <n from> to *= from
mul <vb to>, <b from> to = to or from
mul <vs str>, <n cnt> str = str:rep(from)
neg <vn num> num = -num
neg <vb var> var = not var
neg <vs str> str = str:rev()
inv <vn num> num = 1 / num
mod <vn num>, <n dv> num = num % dv
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.
call <ui p> push the ip, then jmp p; used to execute subroutines
ret pop something, then jmp there; used to exit subroutines
push <e a>[, <e b>[, <e c>[…]]] put values onto the stack; from left to right
pop <v a>[, <v b>[, <v c>[…]]] takes values from the stack and sets the passed variables to them; from left to right
equal <v a>, <e b> a = a == b
less <vn a>, <n b> a = a < b; after executing, a is a bool
less <vs a>, <s b> a = a < b; less also works for strings
usleep <n t> aborts the program for at least floor(max(0, t)) ms
sleep <n t> executes usleep with t * 1000000 as argument
get_us_time <v to> stores minetest.get_us_time() into to; can be used to measure time differences
tostring <ve var> var = tostring(var)
print <e a>[, <e b>[, <e c>[…]]] adds variables to the log, seperated by \t, \n is added at the end
flush Output the log, this should vary for every mod.
```
How mods can use this mod:
```
local mylog = print
@ -26,13 +72,13 @@ local function mystart(parsed_code)
return true
end
end, parsed_code)
thread:suscitate()
mykeepalive(thread)
end
mystart(parsed_code)
local function mykeepalive(thread)
thread:suscitate()
if not thread.stopped then
return
end