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Lunatic translator: ai/move/action.
This exposes some problems in the default/in-the-wild CONs. As usual, we'll have to retrofit sensible semantics :rolleyes:. git-svn-id: https://svn.eduke32.com/eduke32@2765 1a8010ca-5511-0410-912e-c29ae57300e0
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helixhorned
parent
23e43886a8
commit
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1 changed files with 160 additions and 62 deletions
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@ -91,29 +91,33 @@ local function parse_number(numstr)
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end
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local LABEL_DEFINE = 1
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--local LABEL_STATE = 2
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--local LABEL_ACTOR = 4
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local LABEL_ACTION = 8
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local LABEL_AI = 16
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local LABEL_MOVE = 32
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local LABEL = { MOVE=2, AI=3, ACTION=5, [2]="move", [3]="ai", [5]="action" }
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local MOVE_NO_ = {0,0}
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local ACTION_NO_ = {0,0,0,0,0}
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local LABEL_NO = { [2]=MOVE_NO_, [3]={ACTION_NO_,MOVE_NO_,0}, [5]=ACTION_NO_ }
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-- will contain:
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-- * scalar numbers: `define'd values
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-- * tables of length 2, 3, 5: move, ai, action definitions (respectively)
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-- - move: { hvel <num>, vvel <num> }
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-- - ai: { action <label str>, move <label str, or scalar 0 or 1>, flags <num> }
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-- - action: { startframe, numframes, viewtype, incval, delay } (all <num>)
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local g_labeldef = {}
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local g_labeltype = {}
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local function reset_labels()
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g_labeldef = { NO=0 }
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g_labeltype = { NO=LABEL_DEFINE+LABEL_ACTION+LABEL_AI+LABEL_MOVE }
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g_labeldef = { NO=0 } -- NO is also a valid `move', `ai' or `action'
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for i=1,#con.labels do
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for label, val in pairs(con.labels[i]) do
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g_labeldef[label] = val
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g_labeltype[label] = LABEL_DEFINE
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end
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end
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end
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local function lookup_defined_label(identifier)
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-- XXX: error reports give wrong numbers if e.g. happened in "actor" def
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-- (since it runs when fully parsed, i.e. at "enda")
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local function lookup_defined_label(maybe_minus_str, identifier)
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local num = g_labeldef[identifier]
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if (num == nil) then
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@ -121,29 +125,28 @@ local function lookup_defined_label(identifier)
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return -inf -- return a number for type cleanness
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end
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return num
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end
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local function do_define_label(identifier, idornum)
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-- TODO: label types
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local num
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if (type(idornum)=="number") then
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num = idornum
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else
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assert(idornum ~= nil)
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num = lookup_defined_label(idornum)
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if (num == -inf) then
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return
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end
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if (type(num) ~= "number") then
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errprintf("label \"%s\" is not a `define'd value", identifier)
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return -inf
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end
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local oldnum = g_labeldef[identifier]
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if (oldnum) then
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return (maybe_minus_str=="" and 1 or -1) * num
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end
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local function do_define_label(identifier, num)
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local oldval = g_labeldef[identifier]
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if (oldval) then
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if (type(oldval) == "table") then
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errprintf("refusing to overwrite `%s' label \"%s\" with a `define'd value",
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LABEL[#oldval], identifier)
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return
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end
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-- con.labels[...]: don't warn for wrong PROJ_ redefinitions
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if (oldnum ~= num and con.labels[2][identifier]==nil) then
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if (oldval ~= num and con.labels[2][identifier]==nil) then
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warnprintf("label \"%s\" not redefined with new value %d (old: %d)",
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identifier, num, oldnum)
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identifier, num, oldval)
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end
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return
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end
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@ -151,6 +154,82 @@ local function do_define_label(identifier, idornum)
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g_labeldef[identifier] = num
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end
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local function check_move_literal(num)
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if (num~=0 and num~=1) then
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errprintf("literal `move' number must be either 0 or 1")
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return MOVE_NO_
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end
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-- Both move 0 and 1 have hvel and vvel 0, but they must not compare equal
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-- for 'ifmove'. 0.1 will be truncated to 0 when passing to the game.
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-- XXX: this is still wrong, we need an ID
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return {0.1*num, 0.1*num}
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end
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local function check_action_or_ai_literal(labeltype, num)
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if (num~=0) then
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errprintf("literal `%s' number must be 0", LABEL[labeltype])
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return LABEL_NO[labeltype]
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end
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return LABEL_NO[labeltype]
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end
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local function lookup_composite(labeltype, identifier)
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if (identifier=="NO") then
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-- NO is a special case and is valid for move, ai, action
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return LABEL_NO[labeltype]
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end
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local val = g_labeldef[identifier]
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if (val == nil) then
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errprintf("label \"%s\" is not defined", identifier)
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return LABEL_NO[labeltype] -- return a value of the expected type for cleanness
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end
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if (type(val)~="table" or #val~=labeltype) then
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errprintf("label \"%s\" is not a%s `%s' value", identifier,
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labeltype==LABEL.MOVE and "" or "n", LABEL[labeltype])
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return LABEL_NO[labeltype]
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end
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return val
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end
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local function do_define_composite(labeltype, identifier, ...)
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local oldval = g_labeldef[identifier]
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if (oldval) then
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if (type(oldval) ~= "table" or #val~=labeltype) then
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errprintf("refusing to overwrite `%s' label \"%s\" with a `%s' value",
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type(oldval)=="number" and "define" or LABEL[#oldval],
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identifier, LABEL[labeltype])
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return
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end
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warnprintf("duplicate `%s' definition of \"%s\" ignored",
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LABEL[labeltype], identifier)
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return
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end
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local val = {...}
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for i=#val+1,labeltype do
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val[i] = LABEL_NO[labeltype][i]
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end
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if (labeltype == LABEL.AI) then
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-- OR together the flags
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for i=#val,LABEL.AI+1, -1 do
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val[LABEL.AI] = bit.bor(val[LABEL.AI], val[i])
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val[i] = nil
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end
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end
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g_labeldef[identifier] = val
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end
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local function parse(contents) end -- fwd-decl
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local function do_include_file(dirname, filename) end
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@ -169,26 +248,27 @@ else
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fd, msg = io.open(dirname..filename)
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if (fd == nil) then
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printf("Fatal error: couldn't open %s", msg)
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printf("[%d] Fatal error: couldn't open %s", g_recurslevel, msg)
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g_numerrors = inf
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return
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end
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end
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printf("%s[%d] Parsing file \"%s\"", (g_recurslevel==-1 and "\n---- ") or "",
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g_recurslevel+1, dirname..filename);
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local contents = fd:read("*all")
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fd:close()
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if (contents == nil) then
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-- maybe that file name turned out to be a directory or other
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-- special file accidentally
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printf("Fatal error: couldn't read from \"%s\"", dirname..filename)
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printf("[%d] Fatal error: couldn't read from \"%s\"",
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g_recurslevel, dirname..filename)
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g_numerrors = inf
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return
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end
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printf("%s[%d] Parsing file \"%s\"", (g_recurslevel==-1 and "\n---- ") or "",
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g_recurslevel+1, dirname..filename);
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local oldfilename = g_filename
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g_filename = filename
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parse(contents)
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@ -347,6 +427,9 @@ local t_identifier = Var("t_identifier")
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-- This one matches keywords, too:
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local t_identifier_all = Var("t_identifier_all")
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local t_define = Var("t_define")
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local t_move = Var("t_move")
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local t_ai = Var("t_ai")
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local t_action = Var("t_action")
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-- NOTE: no chance to whitespace and double quotes in filenames:
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local t_filename = lpeg.C((anychar-Set(" \t\r\n\""))^1)
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local t_newline_term_str = match_until(anychar, newline)
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@ -379,7 +462,9 @@ local function n_defines(n) -- works well only for small n
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end
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local D, R, W, I = -1, -2, -3, -4;
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local D, R, W, I, AC, MV, AI = -1, -2, -3, -4, -5, -6, -7
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local TOKEN_PATTERN = { [D]=t_define, [R]=t_rvar, [W]=t_wvar, [I]=t_identifier,
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[AC]=t_action, [MV]=t_move, [AI]=t_ai }
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-- Generic command pattern, types given by varargs.
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-- The command name to be matched is attached later.
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@ -393,18 +478,7 @@ local function cmd(...)
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local vartypes = {...}
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for i=1,#vartypes do
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assert(vartypes[i] < 0)
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if (vartypes[i] == D) then
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pat = pat * sp1 * t_define
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elseif (vartypes[i] == R) then
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pat = pat * sp1 * t_rvar
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elseif (vartypes[i] == W) then
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pat = pat * sp1 * t_wvar
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else -- I
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assert(vartypes[i] == I)
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pat = pat * sp1 * t_identifier
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end
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pat = pat * sp1 * assert(TOKEN_PATTERN[vartypes[i]])
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end
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return pat
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@ -463,9 +537,18 @@ local Co = {
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gamearray = cmd(I,D),
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--- 5. Top level commands that are also run-time commands
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action = sp1 * t_identifier * (sp1 * t_define)^-5 / function(id) do_define_label(id, 0) end, -- TEMP
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ai = sp1 * t_identifier * (sp1 * t_define)^0 / function(id) do_define_label(id, 0) end, -- TEMP
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move = sp1 * t_identifier * (sp1 * t_define)^-2 / function(id) do_define_label(id, 0) end, -- TEMP
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-- startframe, numframes, viewtype, incval, delay:
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action = sp1 * t_identifier * (sp1 * t_define)^-5 /
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function(...) do_define_composite(LABEL.ACTION, ...) end,
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-- action, move, flags...:
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ai = sp1 * t_identifier * (sp1 * t_action *
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(sp1 * t_move * (sp1 * t_define)^0)^-1
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)^-1 /
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function(...) do_define_composite(LABEL.AI, ...) end,
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move = sp1 * t_identifier * (sp1 * t_define)^-2 / -- hvel, vvel
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function(...) do_define_composite(LABEL.MOVE, ...) end,
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--- 6. Deprecated TLCs
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betaname = newline_term_string,
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@ -593,9 +676,9 @@ local Ci = {
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--- 3. Actors
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-- These three need more attention (different kind of labels; move
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-- additionally may accept 0 or 1):
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action = cmd(D),
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ai = cmd(D),
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move = sp1 * t_define * (sp1 * t_define)^0,
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action = cmd(AC),
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ai = cmd(AI),
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move = sp1 * t_move * (sp1 * t_define)^0,
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cactor = cmd(D),
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count = cmd(D),
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@ -829,9 +912,9 @@ local Ci = {
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local Cif = {
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-- XXX: ai, action, move/def labels
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ifai = cmd(D),
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ifaction = cmd(D),
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ifmove = cmd(D),
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ifai = cmd(AI),
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ifaction = cmd(AC),
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ifmove = cmd(MV),
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ifrnd = cmd(D),
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ifpdistl = cmd(D),
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@ -1066,15 +1149,23 @@ local stmt_list = Var("stmt_list")
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local stmt_list_or_eps = (stmt_list * sp1)^-1
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local stmt_list_nosp_or_eps = (stmt_list * (sp1 * stmt_list)^0)^-1
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-- common to all three: <name/tilenum> [<strength> [<action> [<move> [<ai>... ]]]]
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local common_actor_end = sp1 * t_define * sp1 * (t_define * sp1)^0 * stmt_list_or_eps * "enda"
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-- common to actor and useractor: <name/tilenum> [<strength> [<action> [<move> [<flags>... ]]]]
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local common_actor_end = sp1 * t_define *
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(sp1 * t_define *
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(sp1 * t_action *
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(sp1 * t_move *
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(sp1 * t_define)^0
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)^-1
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)^-1
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)^-1
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* sp1 * stmt_list_or_eps * "enda"
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--== block delimiters (no recursion) ==--
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local Cb = {
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-- actor (...)
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actor = common_actor_end,
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-- eventloadactor (...)
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eventloadactor = common_actor_end,
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-- eventloadactor <name/tilenum>
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eventloadactor = sp1 * t_define * sp1 * stmt_list_or_eps * "enda",
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-- useractor <actortype> (...)
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useractor = sp1 * t_define * common_actor_end,
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@ -1135,7 +1226,14 @@ local Grammar = Pat{
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-- getactor [THISACTOR].y y
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-- This is in need of cleanup!
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t_identifier = -NotKeyw(con.keyword * (sp1 + "[")) * lpeg.C(t_identifier_all),
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t_define = (t_maybe_minus * t_identifier/lookup_defined_label) + t_number, -- TODO: minus
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t_define = (lpeg.C(t_maybe_minus) * t_identifier / lookup_defined_label) + t_number,
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t_move = (t_identifier/function(id) lookup_composite(LABEL.MOVE, id) end) +
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t_number/check_move_literal,
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t_ai = (t_identifier/function(id) lookup_composite(LABEL.AI, id) end) +
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t_number/function(num) check_action_or_ai_literal(LABEL.AI, num) end,
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t_action = (t_identifier/function(id) lookup_composite(LABEL.ACTION, id) end) +
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t_number/function(num) check_action_or_ai_literal(LABEL.ACTION, num) end,
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t_arrayexp = t_identifier * arraypat * memberpat^-1,
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