103 lines
3.4 KiB
C
103 lines
3.4 KiB
C
#ifndef __LUA_UDATALIB_H__
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#define __LUA_UDATALIB_H__
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#include "doomdef.h"
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#include "lua_script.h"
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#include "lua_libs.h"
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#include "fastcmp.h"
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// Indices in getter/setter tables for fields
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#define UDATALIB_GETTER 1
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#define UDATALIB_SETTER 2
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typedef struct udata_field_s {
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const char *name;
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size_t offset;
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lua_CFunction getter;
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lua_CFunction setter;
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} udata_field_t;
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// Simple setters and getters, for situations where getter is simply
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// "return obj.field" and setter is "obj.field = value"
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int udatalib_getter_fixed(lua_State *L);
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int udatalib_getter_angle(lua_State *L);
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int udatalib_getter_uint8(lua_State *L);
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int udatalib_getter_sint8(lua_State *L);
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int udatalib_getter_uint16(lua_State *L);
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int udatalib_getter_int16(lua_State *L);
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int udatalib_getter_uint32(lua_State *L);
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int udatalib_getter_int32(lua_State *L);
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int udatalib_getter_uint64(lua_State *L);
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int udatalib_getter_int64(lua_State *L);
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int udatalib_getter_string(lua_State *L);
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int udatalib_getter_boolean(lua_State *L);
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int udatalib_getter_spritenum(lua_State *L);
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int udatalib_getter_mobj(lua_State *L);
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int udatalib_getter_subsector(lua_State *L);
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int udatalib_getter_mobjtype(lua_State *L);
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int udatalib_getter_player(lua_State *L);
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int udatalib_getter_mapthing(lua_State *L);
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int udatalib_getter_slope(lua_State *L);
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int udatalib_getter_cmd(lua_State *L);
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int udatalib_getter_playerstate(lua_State *L);
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int udatalib_getter_powers(lua_State *L);
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int udatalib_getter_kartstuff(lua_State *L);
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int udatalib_getter_pflags(lua_State *L);
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int udatalib_getter_panim(lua_State *L);
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int udatalib_getter_tic(lua_State *L);
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int udatalib_setter_fixed(lua_State *L);
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int udatalib_setter_angle(lua_State *L);
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int udatalib_setter_uint8(lua_State *L);
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int udatalib_setter_sint8(lua_State *L);
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int udatalib_setter_uint16(lua_State *L);
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int udatalib_setter_int16(lua_State *L);
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int udatalib_setter_uint32(lua_State *L);
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int udatalib_setter_int32(lua_State *L);
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int udatalib_setter_uint64(lua_State *L);
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int udatalib_setter_int64(lua_State *L);
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int udatalib_setter_string(lua_State *L);
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int udatalib_setter_boolean(lua_State *L);
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int udatalib_setter_boolean_nocheck(lua_State *L);
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int udatalib_setter_spritenum(lua_State *L);
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int udatalib_setter_mobj(lua_State *L);
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int udatalib_setter_playerstate(lua_State *L);
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int udatalib_setter_pflags(lua_State *L);
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int udatalib_setter_panim(lua_State *L);
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int udatalib_setter_tic(lua_State *L);
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// Adds setter and getter for field and stores it as field.name..".get" and
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// field.name..".set" in table at index mt. (metatable, usually)
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void udatalib_addfield(lua_State *L, int mt, udata_field_t field);
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// Convinience function to add array of fields at once.
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void udatalib_addfields(lua_State *L, int mt, const udata_field_t fields[]);
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// I miss C++ template functons :(
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// Get pointer to field value within getter or setter
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#define UDATALIB_GETFIELD(type, field) \
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{ \
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size_t offset = lua_tointeger(L, lua_upvalueindex(1)); \
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field = (type*)((uint8_t*)lua_touserdata(L, 1) + offset); \
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}
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// Creates implementation for simple getter and setter. Super lazy, yes.
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// Assumes userdata is a pointer to actual data. Maybe not really safe.
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#define UDATALIB_SIMPLE_GETTER(type, pushf) \
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{ \
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type *field; \
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UDATALIB_GETFIELD(type, field) \
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pushf(L, *field); \
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return 1; \
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}
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#define UDATALIB_SIMPLE_SETTER(type, checkf) \
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{ \
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type *field; \
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UDATALIB_GETFIELD(type, field) \
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*field = checkf(L, 2); \
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return 0; \
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}
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#endif |