mirror of
https://github.com/DrBeef/Raze.git
synced 2024-11-16 09:21:12 +00:00
1006 lines
28 KiB
Lua
1006 lines
28 KiB
Lua
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-- This file contains LuaJIT definitions of stuff that's common to the game and
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-- editor. The 'decl' function is expected to be defined in the global
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-- environment.
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-- See the included license file "BUILDLIC.TXT" for license info.
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local ffi = require("ffi")
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local ffiC = ffi.C
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local bit = require("bit")
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-- Lunatic debugging (mostly bitfield):
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-- ~=0: print diagnostic information
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-- 2: disable JIT compilation
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-- 4: load LuaJIT's 'v' module, printing trace info
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-- 8: load LuaJIT's 'dump' module, printing generated IR/machine code
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ffi.cdef "enum { _DEBUG_LUNATIC=1 }"
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if (bit.band(ffiC._DEBUG_LUNATIC, 2)~=0) then
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require("jit").off()
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end
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if (bit.band(ffiC._DEBUG_LUNATIC, 8)~=0) then
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require("dump").on("+rs")
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elseif (bit.band(ffiC._DEBUG_LUNATIC, 4)~=0) then
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require("v").on()
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end
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local math = require("math")
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local string = require("string")
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local table = require("table")
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local assert = assert
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local error = error
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local pairs = pairs
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local require = require
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local setmetatable = setmetatable
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local tostring = tostring
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local type = type
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local decl = decl
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local getfenv = getfenv
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decl "void OSD_Printf(const char *fmt, ...);"
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print = function(str)
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-- our "print" doesn't use the global "tostring", but the initial one
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str = tostring(str)
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if (type(str) ~= "string") then
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error("invalid argument to print: must be convertible to a string")
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end
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ffiC.OSD_Printf("%s\n", str)
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end
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local print=print
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module(...)
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local band = bit.band
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local bor = bit.bor
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local bnot = bit.bnot
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local lshift = bit.lshift
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local rshift = bit.rshift
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local xor = bit.bxor
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--== bitint type factory ==--
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-- Metatable for an integer type that is treated as bitfield. The integer
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-- itself must be named '_v'.
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local bitint_mt = {
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__index = {
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set = function(self, bits)
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self._v = bor(self._v, bits)
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end,
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clear = function(self, bits)
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self._v = band(self._v, bnot(bits))
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end,
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flip = function(self, bits)
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self._v = xor(self._v, bits)
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end,
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test = function(self, bits)
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return (band(self._v, bits) ~= 0)
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end,
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},
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__metatable = true,
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}
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local bitint_to_base_type = {}
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function bitint_new_struct_type(basetypename, newtypename)
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assert(bitint_to_base_type[newtypename] == nil)
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assert(type(basetypename)=="string")
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assert(type(newtypename)=="string")
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local bitint_struct_t = ffi.typeof("struct { $ _v; }", ffi.typeof(basetypename))
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ffi.metatype(bitint_struct_t, bitint_mt)
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ffi.cdef("typedef $ $;", bitint_struct_t, newtypename)
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bitint_to_base_type[newtypename] = basetypename
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end
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function bitint_member(bitint_struct_typename, membname)
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return string.format("union { %s %s; %s %sx; };",
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bitint_to_base_type[bitint_struct_typename], membname,
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bitint_struct_typename, membname)
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end
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bitint_new_struct_type("uint8_t", "UBit8")
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bitint_new_struct_type("uint16_t", "UBit16")
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--== Core engine structs ==--
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local SECTOR_STRUCT = [[
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struct {
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const int16_t wallptr, wallnum;
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const int16_t ceilingpicnum;
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int16_t ceilingheinum;
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const int16_t ceilingbunch;
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uint16_t ceilingstat;
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int32_t ceilingz;
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int8_t ceilingshade;
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uint8_t ceilingpal, ceilingxpanning, ceilingypanning;
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const int16_t floorpicnum;
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int16_t floorheinum;
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const int16_t floorbunch;
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uint16_t floorstat;
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int32_t floorz;
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int8_t floorshade;
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uint8_t floorpal, floorxpanning, floorypanning;
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uint8_t visibility, filler;
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int16_t lotag, hitag; // NOTE: signed for Lunatic
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int16_t extra;
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}]]
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local SPRITE_STRUCT = [[
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struct {
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int32_t x, y, z;
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]]..bitint_member("UBit16", "cstat")..[[
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const int16_t picnum;
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int8_t shade;
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uint8_t pal, clipdist, filler;
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uint8_t xrepeat, yrepeat;
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int8_t xoffset, yoffset;
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const int16_t sectnum, statnum;
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int16_t ang;
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const int16_t owner;
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int16_t xvel;
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// NOTE: yvel is often used as player index in game code.
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const int16_t yvel;
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int16_t zvel;
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int16_t lotag, hitag, extra;
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}]]
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local WALL_STRUCT = [[
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struct {
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int32_t x, y;
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const int16_t point2, nextwall, nextsector;
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const int16_t upwall, dnwall;
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]]..bitint_member("UBit16", "cstat")..[[
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const int16_t picnum, overpicnum;
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int8_t shade;
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uint8_t pal, xrepeat, yrepeat, xpanning, ypanning;
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int16_t lotag, hitag, extra;
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}]]
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-- Converts a template struct definition to an internal, unrestricted one.
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-- NOTE: "[^ ]*" for const decorations in defs.ilua.
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function strip_const(structstr)
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return (string.gsub(structstr, "const[^ ]* ", ""));
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end
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-- NOTE for FFI definitions: we're compiling EDuke32 with -funsigned-char, so
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-- we need to take care to declare chars as unsigned whenever it matters, for
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-- example if it represents a palette index. (I think it's harmless for stuff
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-- like passing a function argument, but it should be done there for clarity.)
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-- TODO: provide getters for unsigned {hi,lo}tag?
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ffi.cdef([[
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typedef $ sectortype;
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typedef $ walltype;
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// NOTE: spritetype and tspritetype are different types with the same data members.
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typedef $ spritetype;
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typedef struct { spritetype; } tspritetype;
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typedef struct {
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const uint32_t mdanimtims;
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const int16_t mdanimcur;
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int16_t angoff, pitch, roll;
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// TODO: make into an ivec3_t
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int32_t xoff, yoff, zoff;
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]]..bitint_member("UBit8", "flags")..[[
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uint8_t xpanning, ypanning;
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const uint8_t filler;
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float alpha;
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union {
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const intptr_t _tspr;
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struct { const int32_t _dummy0, _dummy1; };
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};
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} spriteext_t;
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typedef struct {
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int32_t x, y, z;
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} vec3_t;
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typedef struct {
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vec3_t pos;
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int16_t sprite, wall, sect;
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} hitdata_t;
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]],
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ffi.typeof(SECTOR_STRUCT), ffi.typeof(WALL_STRUCT),
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ffi.typeof(SPRITE_STRUCT))
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-- Define the "palette_t" type, which for us has .{r,g,b} fields and a
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-- bound-checking array of length 3 overlaid.
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local rgbarray_t = require("bcarray").new("uint8_t", 3, "RGB array", "palette_t",
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{ "r", "g", "b", "f" })
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ffi.cdef("typedef union { \
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struct { uint8_t r, g, b, f; }; \
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$ col; \
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} palette_t", rgbarray_t)
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assert(ffi.alignof("palette_t")==1)
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local vec3_ct = ffi.typeof("vec3_t") -- will be metatype'd in geom.lua:
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require("geom")
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local hitdata_ct = ffi.typeof("hitdata_t")
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decl[[
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const int32_t engine_main_arrays_are_static;
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const int32_t engine_v8;
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]]
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--== Engine data and functions ==--
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-- NOTE TO SELF: This is not C, never EVER write
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-- if (x)
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-- when checking a C variable x for 'thuthiness'
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if (ffiC.engine_main_arrays_are_static ~= 0) then
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decl[[
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sectortype sector[];
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walltype wall[];
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spritetype sprite[];
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tspritetype tsprite[];
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spriteext_t spriteext[];
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]]
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else
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decl[[
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sectortype *sector;
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walltype *wall;
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spritetype *sprite;
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tspritetype *tsprite;
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spriteext_t *spriteext;
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]]
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end
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if (ffiC.engine_v8 == 0) then
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-- V7
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ffi.cdef[[
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enum
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{
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MAXSECTORS = 1024,
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MAXWALLS = 8192,
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MAXSPRITES = 4096,
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}
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]]
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else
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-- V8
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ffi.cdef[[
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enum
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{
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MAXSECTORS = 4096,
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MAXWALLS = 16384,
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MAXSPRITES = 16384,
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}
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]]
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end
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ffi.cdef[[
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enum {
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MAXSTATUS = 1024,
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MAXTILES = 30720,
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MAXSPRITESONSCREEN = 4096,
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MAXBUNCHES = 512,
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CEILING = 0,
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FLOOR = 1,
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CLIPMASK0 = (1<<16)+1, // blocking
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CLIPMASK1 = (256<<16)+64, // hittable
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};
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]]
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ffi.cdef[[
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const int16_t numsectors, numwalls;
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const int32_t numyaxbunches; // XXX
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const int32_t totalclock;
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int32_t randomseed; // DEPRECATED
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const int32_t xdim, ydim;
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const int32_t windowx1, windowy1, windowx2, windowy2;
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]]
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decl[[
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int32_t yxaspect;
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int32_t viewingrange;
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int32_t spritesortcnt;
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int32_t guniqhudid;
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const int32_t rendmode;
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const int16_t headspritesect[MAXSECTORS+1], headspritestat[MAXSTATUS+1];
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const int16_t prevspritesect[MAXSPRITES], prevspritestat[MAXSPRITES];
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const int16_t nextspritesect[MAXSPRITES], nextspritestat[MAXSPRITES];
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const int16_t tilesizx[MAXTILES], tilesizy[MAXTILES];
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uint8_t show2dsector[(MAXSECTORS+7)>>3];
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const int16_t headsectbunch[2][MAXBUNCHES], nextsectbunch[2][MAXSECTORS];
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int16_t yax_getbunch(int16_t i, int16_t cf);
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int32_t getceilzofslopeptr(const sectortype *sec, int32_t dax, int32_t day);
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int32_t getflorzofslopeptr(const sectortype *sec, int32_t dax, int32_t day);
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void getzsofslopeptr(const sectortype *sec, int32_t dax, int32_t day,
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int32_t *ceilz, int32_t *florz);
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int32_t changespritesect(int16_t spritenum, int16_t newsectnum);
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int32_t changespritestat(int16_t spritenum, int16_t newstatnum);
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int32_t hitscan(const vec3_t *sv, int16_t sectnum, int32_t vx, int32_t vy, int32_t vz,
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hitdata_t *hitinfo, uint32_t cliptype);
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int32_t cansee(int32_t x1, int32_t y1, int32_t z1, int16_t sect1,
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int32_t x2, int32_t y2, int32_t z2, int16_t sect2);
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void neartag(int32_t xs, int32_t ys, int32_t zs, int16_t sectnum, int16_t ange, int16_t *neartagsector, int16_t *neartagwall,
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int16_t *neartagsprite, int32_t *neartaghitdist, int32_t neartagrange, uint8_t tagsearch,
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int32_t (*blacklist_sprite_func)(int32_t));
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void getzrange(const vec3_t *pos, int16_t sectnum,
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int32_t *ceilz, int32_t *ceilhit, int32_t *florz, int32_t *florhit,
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int32_t walldist, uint32_t cliptype);
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int32_t ldist(const spritetype *s1, const spritetype *s2);
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int32_t dist(const spritetype *s1, const spritetype *s2);
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int32_t inside(int32_t x, int32_t y, int16_t sectnum);
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void updatesector(int32_t x, int32_t y, int16_t *sectnum);
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void updatesectorbreadth(int32_t x, int32_t y, int16_t *sectnum);
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void updatesectorz(int32_t x, int32_t y, int32_t z, int16_t *sectnum);
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void rotatesprite_(int32_t sx, int32_t sy, int32_t z, int16_t a, int16_t picnum,
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int8_t dashade, unsigned char dapalnum, int32_t dastat, uint8_t alpha,
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int32_t cx1, int32_t cy1, int32_t cx2, int32_t cy2);
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void setaspect(int32_t daxrange, int32_t daaspect);
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int32_t kopen4load(const char *filename, char searchfirst);
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int32_t kfilelength(int32_t handle);
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void kclose(int32_t handle);
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int32_t kread(int32_t handle, void *buffer, int32_t leng);
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int32_t klseek(int32_t handle, int32_t offset, int32_t whence);
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]]
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-- misc. functions
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ffi.cdef[[
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uint32_t getticks(void);
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double gethitickms(void);
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int32_t krand(void);
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int32_t ksqrt(uint32_t num);
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int32_t __fastcall getangle(int32_t xvect, int32_t yvect);
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int32_t Mulscale(int32_t a, int32_t b, int32_t sh);
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]]
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local bcheck = require("bcheck")
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local check_sector_idx = bcheck.sector_idx
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local check_sprite_idx = bcheck.sprite_idx
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local check_tile_idx = bcheck.tile_idx
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local wallsofsec -- fwd-decl
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local sectortype_ptr_ct = ffi.typeof("$ *", ffi.typeof(strip_const(SECTOR_STRUCT)))
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local function get_sector_idx(sec)
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local i = ffi.cast(sectortype_ptr_ct, sec)-ffi.cast(sectortype_ptr_ct, ffiC.sector)
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assert(not (i >= ffiC.numsectors+0ULL))
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return i
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end
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local zret = ffi.new("int32_t [4]")
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local zret_t = ffi.typeof[[const struct {
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struct {
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bool spritep;
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int32_t num; // number of sector or sprite
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int32_t z;
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} c, f;
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}]]
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local sectortype_mt = {
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__index = {
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--- Setters
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set_ceilingpicnum = function(s, picnum)
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check_tile_idx(picnum)
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ffi.cast(sectortype_ptr_ct, s).ceilingpicnum = picnum
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end,
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set_floorpicnum = function(s, picnum)
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check_tile_idx(picnum)
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ffi.cast(sectortype_ptr_ct, s).floorpicnum = picnum
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end,
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--- Other methods
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ceilingzat = function(s, pos)
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return ffiC.getceilzofslopeptr(s, pos.x, pos.y)
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end,
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floorzat = function(s, pos)
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return ffiC.getflorzofslopeptr(s, pos.x, pos.y)
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end,
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-- getzrange() interface
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zrangeat = function(s, pos, walldist, cliptype)
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local sectnum = get_sector_idx(s)
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local ipos = vec3_ct(pos.x, pos.y, pos.z)
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walldist = walldist or 128
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cliptype = cliptype or ffiC.CLIPMASK0
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ffiC.getzrange(ipos, sectnum, zret+0, zret+1, zret+2, zret+3,
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walldist, cliptype)
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local ceilz, ceilhit, florz, florhit = zret[0], zret[1], zret[2], zret[3]
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return zret_t({ ceilhit>=49152, bit.band(ceilhit,16383), ceilz },
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{ florhit>=49152, bit.band(florhit,16383), florz })
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end,
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-- inside() port
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contains = function(s, pos)
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local x, y = pos.x, pos.y
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local cnt = 0
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for w in wallsofsec(s) do
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local wal2 = ffiC.wall[ffiC.wall[w].point2]
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local y1, y2 = ffiC.wall[w].y-y, wal2.y-y
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if (xor(y1, y2) < 0) then
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local x1, x2 = ffiC.wall[w].x-x, wal2.x-x
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if (xor(x1, x2)>=0) then
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cnt = xor(cnt, x1)
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else
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cnt = xor(cnt, xor(x1*y2-x2*y1, y2))
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end
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end
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end
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return (cnt < 0)
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end,
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}
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}
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ffi.metatype("sectortype", sectortype_mt)
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local walltype_ptr_ct = ffi.typeof("$ *", ffi.typeof(strip_const(WALL_STRUCT)))
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local walltype_mt = {
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__index = {
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--- Setters
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set_picnum = function(w, picnum)
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check_tile_idx(picnum)
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ffi.cast(walltype_ptr_ct, w).picnum = picnum
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end,
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set_overpicnum = function(w, picnum)
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check_tile_idx(picnum)
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ffi.cast(walltype_ptr_ct, w).overpicnum = picnum
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end,
|
|
|
|
_set_nextwall = function(w, nextwall)
|
|
-- NOTE: Allow setting a wall to white too, but no checking of the
|
|
-- consistency invariant ".nextwall>=0 iff .nextsector>=0".
|
|
if (not (nextwall < 0)) then
|
|
bcheck.wall_idx(nextwall)
|
|
end
|
|
ffi.cast(walltype_ptr_ct, w).nextwall = nextwall
|
|
end,
|
|
|
|
_set_nextsector = function(w, nextsector)
|
|
if (not (nextsector < 0)) then
|
|
check_sector_idx(nextsector)
|
|
end
|
|
ffi.cast(walltype_ptr_ct, w).nextsector = nextsector
|
|
end,
|
|
|
|
--- Predicates
|
|
isblocking = function(w)
|
|
return (band(w.cstat, 1)~=0)
|
|
end,
|
|
|
|
ismasked = function(w)
|
|
return (band(w.cstat, 16)~=0)
|
|
end,
|
|
|
|
isoneway = function(w)
|
|
return (band(w.cstat, 32)~=0)
|
|
end,
|
|
|
|
ishittable = function(w)
|
|
return (band(w.cstat, 64)~=0)
|
|
end,
|
|
}
|
|
}
|
|
ffi.metatype("walltype", walltype_mt)
|
|
|
|
local spriteext_mt = {
|
|
__index = {
|
|
-- Enable EVENT_ANIMATESPRITES for this sprite.
|
|
make_animated = function(sx)
|
|
sx.flags = bor(sx.flags, 16)
|
|
end,
|
|
},
|
|
}
|
|
ffi.metatype("spriteext_t", spriteext_mt)
|
|
|
|
local spritetype_ptr_ct = ffi.typeof("$ *", ffi.typeof(strip_const(SPRITE_STRUCT)))
|
|
-- NOTE: this is the *protected* tspritetype pointer.
|
|
local tspritetype_ptr_ct = ffi.typeof("$ *", ffi.typeof("tspritetype"))
|
|
|
|
local spritetype_mt = {
|
|
__pow = function(s, zofs)
|
|
return vec3_ct(s.x, s.y, s.z-zofs)
|
|
end,
|
|
|
|
__index = {
|
|
--- Setters
|
|
set_picnum = function(s, tilenum)
|
|
check_tile_idx(tilenum)
|
|
ffi.cast(spritetype_ptr_ct, s).picnum = tilenum
|
|
end,
|
|
|
|
_set_yvel = function(s, yvel)
|
|
-- XXX: no protection against malicious use (might set picnum to
|
|
-- another one temporarily)
|
|
-- XXX: this belongs into game-side Lunatic
|
|
if (s.picnum==1405) then -- APLAYER
|
|
error("setting yvel on an APLAYER sprite forbidden", 2)
|
|
end
|
|
ffi.cast(spritetype_ptr_ct, s).yvel = yvel
|
|
end,
|
|
|
|
_set_owner = function(s, owner)
|
|
-- XXX: AMC TC sets owner to -1 in the cutscene.
|
|
check_sprite_idx(owner)
|
|
ffi.cast(spritetype_ptr_ct, s).owner = owner
|
|
end,
|
|
},
|
|
}
|
|
|
|
local function deep_copy(tab)
|
|
local ntab = {}
|
|
for key, val in pairs(tab) do
|
|
if (type(val)=="table") then
|
|
ntab[key] = deep_copy(val)
|
|
else
|
|
assert(type(val)=="function")
|
|
ntab[key] = val
|
|
end
|
|
end
|
|
return ntab
|
|
end
|
|
|
|
local tspritetype_mt = deep_copy(spritetype_mt)
|
|
|
|
local function get_sprite_idx(spr)
|
|
local i = ffi.cast(spritetype_ptr_ct, spr)-ffi.cast(spritetype_ptr_ct, ffiC.sprite)
|
|
assert(not (i >= ffiC.MAXSPRITES+0ULL))
|
|
return i
|
|
end
|
|
|
|
-- Methods that are specific to sprites
|
|
function spritetype_mt.__index.setpos(spr, pos) -- setsprite() clone
|
|
spr.x, spr.y, spr.z = pos.x, pos.y, pos.z
|
|
|
|
local newsect = updatesector(spr, spr.sectnum)
|
|
if (newsect < 0) then
|
|
return -1
|
|
end
|
|
|
|
if (spr.sectnum ~= newsect) then
|
|
ffiC.changespritesect(get_sprite_idx(spr), newsect)
|
|
end
|
|
return newsect
|
|
end
|
|
|
|
-- Methods that are specific to tsprites
|
|
function tspritetype_mt.__index.dup(tspr)
|
|
if (ffiC.spritesortcnt >= ffiC.MAXSPRITESONSCREEN+0ULL) then
|
|
return nil
|
|
end
|
|
|
|
local newtspr = ffiC.tsprite[ffiC.spritesortcnt]
|
|
ffi.copy(newtspr, tspr, ffi.sizeof(tspr))
|
|
ffiC.spritesortcnt = ffiC.spritesortcnt+1
|
|
|
|
return newtspr
|
|
end
|
|
|
|
function tspritetype_mt.__index.getspr(tspr)
|
|
return sprite[tspr.owner]
|
|
end
|
|
|
|
|
|
-- The user of this module can insert additional "spritetype" index
|
|
-- methods and register them with "ffi.metatype".
|
|
function finish_spritetype(mt_index)
|
|
for name, func in pairs(mt_index) do
|
|
spritetype_mt.__index[name] = func
|
|
tspritetype_mt.__index[name] = func
|
|
end
|
|
ffi.metatype("spritetype", spritetype_mt)
|
|
ffi.metatype("tspritetype", tspritetype_mt)
|
|
end
|
|
|
|
|
|
---=== Restricted access to C variables from Lunatic ===---
|
|
|
|
-- set metatable and forbid setting it further
|
|
function setmtonce(tab, mt)
|
|
mt.__metatable = true
|
|
return setmetatable(tab, mt)
|
|
end
|
|
|
|
---- indirect C array access ----
|
|
|
|
-- create a safe indirection for an ffi.C array
|
|
function creategtab(ctab, maxidx, name)
|
|
local tab = {}
|
|
local tmpmt = {
|
|
__index = function(tab, key)
|
|
if (key>=0 and key < maxidx) then
|
|
return ctab[key]
|
|
end
|
|
error('out-of-bounds '..name..' read access', 2)
|
|
end,
|
|
__newindex = function()
|
|
error('cannot write directly to '..name, 2)
|
|
end,
|
|
}
|
|
|
|
return setmtonce(tab, tmpmt)
|
|
end
|
|
|
|
-- Construct const struct from table
|
|
function conststruct(tab)
|
|
local strtab = { "const struct { int32_t " }
|
|
local vals = {}
|
|
|
|
for member, val in pairs(tab) do
|
|
strtab[#strtab+1] = member..","
|
|
vals[#vals+1] = val
|
|
end
|
|
strtab[#strtab] = strtab[#strtab]:gsub(',',';')
|
|
strtab[#strtab+1] = "}"
|
|
|
|
return ffi.new(table.concat(strtab), vals)
|
|
end
|
|
|
|
-- Static, non-instance members. Used to hold constants, for example
|
|
-- sprite.CSTAT.TRANSLUCENT1
|
|
local static_members = { sector={}, wall={}, sprite={} }
|
|
|
|
static_members.sector.STAT = conststruct
|
|
{
|
|
PARALLAX = 1,
|
|
SLOPED = 2,
|
|
|
|
XFLIP = 16,
|
|
YFLIP = 32,
|
|
RELATIVE = 64,
|
|
MASKED = 128,
|
|
-- NOTE the reversed order
|
|
TRANSLUCENT2 = 128,
|
|
TRANSLUCENT1 = 256,
|
|
TRANSLUCENT_BOTH_BITS = 256+128,
|
|
BLOCKING = 512,
|
|
HITSCAN = 1024,
|
|
}
|
|
|
|
static_members.wall.CSTAT = conststruct
|
|
{
|
|
BLOCKING = 1,
|
|
XFLIP = 8,
|
|
MASKED = 16,
|
|
ONEWAY = 32,
|
|
HITSCAN = 64,
|
|
TRANSLUCENT1 = 128,
|
|
YFLIP = 256,
|
|
TRANSLUCENT2 = 512,
|
|
TRANSLUCENT_BOTH_BITS = 512+128,
|
|
}
|
|
|
|
static_members.sprite.CSTAT = conststruct
|
|
{
|
|
BLOCKING = 1,
|
|
TRANSLUCENT1 = 2,
|
|
XFLIP = 4,
|
|
YFLIP = 8,
|
|
WALLALIGN = 16,
|
|
FLOORALIGN = 32,
|
|
ONESIDED = 64,
|
|
CENTERED = 128,
|
|
HITSCAN = 256,
|
|
TRANSLUCENT2 = 512,
|
|
TRANSLUCENT_BOTH_BITS = 512+2,
|
|
}
|
|
|
|
local bitar = require("bitar")
|
|
-- XXX: bitar uses int32_t arrays, while show2dsector[] is a uint8_t
|
|
-- array. Potential unaligned access. Also, only works on little-endian
|
|
-- machines. This sucks.
|
|
static_members.sector.showbitmap = bitar.new(ffiC.MAXSECTORS-1, ffi.cast("int32_t *", ffiC.show2dsector))
|
|
|
|
local sms = static_members.sprite
|
|
sms._headspritesect = creategtab(ffiC.headspritesect, ffiC.MAXSECTORS, 'headspritesect[]')
|
|
-- NOTE: don't allow freelist access
|
|
sms._headspritestat = creategtab(ffiC.headspritestat, ffiC.MAXSTATUS, 'headspritestat[]')
|
|
sms._nextspritesect = creategtab(ffiC.nextspritesect, ffiC.MAXSPRITES, 'nextspritesect[]')
|
|
sms._nextspritestat = creategtab(ffiC.nextspritestat, ffiC.MAXSPRITES, 'nextspritestat[]')
|
|
sms._prevspritesect = creategtab(ffiC.prevspritesect, ffiC.MAXSPRITES, 'prevspritesect[]')
|
|
sms._prevspritestat = creategtab(ffiC.prevspritestat, ffiC.MAXSPRITES, 'prevspritestat[]')
|
|
|
|
function static_members.sprite.changesect(spritenum, sectnum, noerr)
|
|
check_sprite_idx(spritenum)
|
|
check_sector_idx(sectnum)
|
|
if (ffiC.changespritesect(spritenum, sectnum)==-1 and not noerr) then
|
|
error("cannot change sector number of sprite not in the game world", 2)
|
|
end
|
|
end
|
|
|
|
function static_members.sprite.changestat(spritenum, statnum, noerr)
|
|
check_sprite_idx(spritenum)
|
|
if (statnum >= ffiC.MAXSTATUS+0ULL) then
|
|
error("invalid status number "..statnum, 2)
|
|
end
|
|
if (ffiC.changespritestat(spritenum, statnum)==-1 and not noerr) then
|
|
error("cannot change status number of sprite not in the game world", 2)
|
|
end
|
|
end
|
|
|
|
function GenStructMetatable(Structname, Boundname, StaticMembersTab)
|
|
StaticMembersTab = StaticMembersTab or static_members[Structname]
|
|
|
|
return {
|
|
__index = function(tab, key)
|
|
if (type(key)=="number") then
|
|
if (key >= 0 and key < ffiC[Boundname]) then
|
|
return ffiC[Structname][key]
|
|
end
|
|
error("out-of-bounds "..Structname.."[] read access with index "..key, 2)
|
|
elseif (type(key)=="string") then
|
|
return StaticMembersTab[key]
|
|
end
|
|
end,
|
|
|
|
__newindex = function() error("cannot write directly to "..Structname.."[]", 2) end,
|
|
}
|
|
end
|
|
|
|
local sector_mt = GenStructMetatable("sector", "numsectors")
|
|
local wall_mt = GenStructMetatable("wall", "numwalls")
|
|
local sprite_mt = GenStructMetatable("sprite", "MAXSPRITES")
|
|
|
|
local atsprite_mt = {
|
|
__index = function(tab, idx)
|
|
check_sprite_idx(idx)
|
|
|
|
local tspr = ffi.cast(tspritetype_ptr_ct, ffiC.spriteext[idx]._tspr)
|
|
if (tspr == nil) then
|
|
error("tsprite of actor "..idx.." unavailable", 2)
|
|
end
|
|
|
|
-- Return a reference to a tsprite[] element.
|
|
return tspr[0]
|
|
end,
|
|
|
|
__newindex = function() error('cannot write directly to atsprite[]', 2) end,
|
|
}
|
|
|
|
|
|
local vars_to_ignore = {}
|
|
for varname,_ in pairs(getfenv(1)) do
|
|
if (ffiC._DEBUG_LUNATIC ~= 0) then
|
|
print("IGNORE "..varname)
|
|
end
|
|
vars_to_ignore[varname] = true
|
|
end
|
|
|
|
--== ALL GLOBALS FROM HERE ON ARE EXPORTED UPWARDS (see create_globals() below) ==--
|
|
|
|
sector = setmtonce({}, sector_mt)
|
|
wall = setmtonce({}, wall_mt)
|
|
sprite = setmtonce({}, sprite_mt)
|
|
spriteext = creategtab(ffiC.spriteext, ffiC.MAXSPRITES, 'spriteext[]')
|
|
atsprite = setmtonce({}, atsprite_mt)
|
|
|
|
local function iter_wallsofsec(endwall, w)
|
|
w = w+1
|
|
if (w < endwall) then
|
|
return w
|
|
end
|
|
end
|
|
|
|
wallsofsec = function(sec) -- local
|
|
return iter_wallsofsec, sec.wallptr+sec.wallnum, sec.wallptr-1
|
|
end
|
|
|
|
function wallsofsect(sect)
|
|
check_sector_idx(sect)
|
|
return iter_wallsofsec, sector[sect].wallptr+sector[sect].wallnum, sector[sect].wallptr-1
|
|
end
|
|
|
|
--== Per-sector/per-statnum sprite iterators ==--
|
|
local function iter_spritesofsect(sect, i)
|
|
if (i < 0) then
|
|
i = ffiC.headspritesect[sect]
|
|
else
|
|
i = ffiC.nextspritesect[i]
|
|
end
|
|
|
|
if (i >= 0) then return i end
|
|
end
|
|
|
|
-- sprites of sectnum iterator that allows deleting the iterated sprite
|
|
local function iter_spritesofsect_safe(tab, i)
|
|
if (i < 0) then
|
|
i = ffiC.headspritesect[-i]
|
|
else
|
|
i = tab[1]
|
|
end
|
|
|
|
if (i >= 0) then
|
|
tab[1] = ffiC.nextspritesect[i]
|
|
return i
|
|
end
|
|
end
|
|
|
|
function spritesofsect(sect, maydelete)
|
|
check_sector_idx(sect)
|
|
|
|
if (maydelete) then
|
|
return iter_spritesofsect_safe, { -1 }, -sect
|
|
else
|
|
return iter_spritesofsect, sect, -1
|
|
end
|
|
end
|
|
|
|
local function iter_spritesofstat(stat, i)
|
|
if (i < 0) then
|
|
i = ffiC.headspritestat[stat]
|
|
else
|
|
i = ffiC.nextspritestat[i]
|
|
end
|
|
|
|
if (i >= 0) then return i end
|
|
end
|
|
|
|
-- sprites of statnum iterator that allows deleting the iterated sprite
|
|
local function iter_spritesofstat_safe(tab, i)
|
|
if (i < 0) then
|
|
i = ffiC.headspritestat[-i]
|
|
else
|
|
i = tab[1]
|
|
end
|
|
|
|
if (i >= 0) then
|
|
tab[1] = ffiC.nextspritestat[i]
|
|
return i
|
|
end
|
|
end
|
|
|
|
function spritesofstat(stat, maydelete)
|
|
if (stat >= ffiC.MAXSTATUS+0ULL) then
|
|
error("passed invalid statnum to spritesofstat iterator", 2)
|
|
end
|
|
|
|
if (maydelete) then
|
|
return iter_spritesofstat_safe, { -1 }, -stat
|
|
else
|
|
return iter_spritesofstat, stat, -1
|
|
end
|
|
end
|
|
|
|
--== TROR iterators ==--
|
|
local function iter_sectorsofbunch(cf, i)
|
|
if (i < 0) then
|
|
i = ffiC.headsectbunch[cf][-i-1];
|
|
else
|
|
i = ffiC.nextsectbunch[cf][i];
|
|
end
|
|
|
|
if (i >= 0) then return i end
|
|
end
|
|
|
|
function sectorsofbunch(bunchnum, cf)
|
|
if (bunchnum >= ffiC.numyaxbunches+0ULL) then
|
|
error("passed invalid bunchnum to sectorsofbunch iterator", 2)
|
|
end
|
|
if (not (cf == 0 or cf == 1)) then
|
|
error("passed invalid 'cf' to sectorsofbunch iterator, must be 0 or 1", 2)
|
|
end
|
|
|
|
return iter_sectorsofbunch, cf, -bunchnum-1
|
|
end
|
|
|
|
|
|
---=== Engine functions, wrapped for Lua convenience ===---
|
|
|
|
-- returns a hitdata_ct
|
|
-- TODO: make v[xyz] be passed as one aggregate, too?
|
|
-- Additionally, permit different coordinates? (ang&horiz, ...)
|
|
function hitscan(pos, sectnum, vx,vy,vz, cliptype)
|
|
check_sector_idx(sectnum)
|
|
local vec = vec3_ct(pos.x, pos.y, pos.z)
|
|
local hitdata = hitdata_ct()
|
|
|
|
ffiC.hitscan(vec, sectnum, vx,vy,vz, hitdata, cliptype)
|
|
return hitdata
|
|
end
|
|
|
|
function cansee(pos1,sect1, pos2,sect2)
|
|
check_sector_idx(sect1)
|
|
check_sector_idx(sect2)
|
|
|
|
local ret = ffiC.cansee(pos1.x,pos1.y,pos1.z, sect1,
|
|
pos2.x,pos2.y,pos2.z, sect2)
|
|
return (ret~=0)
|
|
end
|
|
|
|
local neartag_ret_ct = ffi.typeof[[
|
|
const struct {
|
|
int32_t sector, wall, sprite;
|
|
int32_t dist;
|
|
}
|
|
]]
|
|
|
|
local function newar() return ffi.new("int16_t [1]") end
|
|
-- TODO: make tagsearch something more convenient
|
|
function neartag(pos, sectnum, ang, range, tagsearch)
|
|
check_sector_idx(sectnum)
|
|
local a, b, c, d = newar(), newar(), newar(), ffi.new("int32_t [1]")
|
|
ffiC.neartag(pos.x, pos.y, pos.z, sectnum, ang, a, b, c, d, range, tagsearch, nil)
|
|
return neartag_ret_ct(a[0], b[0], c[0], d[0])
|
|
end
|
|
|
|
function inside(pos, sectnum)
|
|
check_sector_idx(sectnum)
|
|
return (ffiC.inside(pos.x, pos.y, sectnum)==1)
|
|
end
|
|
|
|
-- TODO: should these rather be one function, and the specific kind of updating
|
|
-- controlled by an argument?
|
|
local us_retsect = ffi.new("int16_t [1]")
|
|
|
|
function updatesector(pos, sectnum)
|
|
us_retsect[0] = sectnum
|
|
ffiC.updatesector(pos.x, pos.y, us_retsect)
|
|
return us_retsect[0]
|
|
end
|
|
|
|
function updatesectorbreadth(pos, sectnum)
|
|
us_retsect[0] = sectnum
|
|
ffiC.updatesectorbreadth(pos.x, pos.y, us_retsect)
|
|
return us_retsect[0]
|
|
end
|
|
|
|
function updatesectorz(pos, sectnum)
|
|
us_retsect[0] = sectnum
|
|
ffiC.updatesectorz(pos.x, pos.y, pos.z, us_retsect)
|
|
return us_retsect[0]
|
|
end
|
|
|
|
function printf(fmt, ...)
|
|
print(string.format(fmt, ...))
|
|
end
|
|
|
|
|
|
-- This is supposed to be run from the file that 'require's this module to take
|
|
-- over the non-local variables from here into its global environment.
|
|
function create_globals(_G_their)
|
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local _G_our = getfenv(1)
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vars_to_ignore["create_globals"] = true
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for varname,obj in pairs(_G_our) do
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if (not vars_to_ignore[varname]) then
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if (ffiC._DEBUG_LUNATIC ~= 0) then
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print("EXPORT "..varname)
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end
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_G_their[varname] = obj
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end
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end
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end
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