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node.bbox now works with the format node.bbox(child, bboxcoord)

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child can be 0 or 1 (or "right" and "left", alternatively)
bbox coord can be 0,1,2 or 3 (or "top", "bottom", "left" and "right", alternatively)

Also added some support for bbox userdata taking "top" "bottom"  "left" "right" fields. Not that there's any use for non-node bbox userdata just yet...
This commit is contained in:
Monster Iestyn 2016-08-04 18:54:29 +01:00
parent 3fba690d0a
commit e3ab77ef21
1 changed files with 95 additions and 11 deletions
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106
src/lua_maplib.c
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@ -231,6 +231,34 @@ static const char *const node_opt[] = {
"children",
NULL};
enum nodechild_e {
nodechild_valid = 0,
nodechild_right,
nodechild_left,
};
static const char *const nodechild_opt[] = {
"valid",
"right",
"left",
NULL};
enum bbox_e {
bbox_valid = 0,
bbox_top,
bbox_bottom,
bbox_left,
bbox_right,
};
static const char *const bbox_opt[] = {
"valid",
"top",
"bottom",
"left",
"right",
NULL};
static const char *const array_opt[] ={"iterate",NULL};
static const char *const valid_opt[] ={"valid",NULL};
@ -968,7 +996,7 @@ static int node_num(lua_State *L)
lua_pushinteger(L, node-nodes);
return 1;
}
/*
// node.bbox[i][j]: i = 0 or 1, j = 0 1 2 or 3
// NOTE: 2D arrays are NOT double pointers,
// the second bbox will be directly after the first in memory (hence the way the bbox is pushed here)
@ -1000,6 +1028,52 @@ static int nodebbox_get(lua_State *L)
LUA_PushUserdata(L, bbox + i*4*sizeof(fixed_t), META_BBOX);
return 1;
}
*/
static int nodebbox_call(lua_State *L)
{
fixed_t *bbox = *((fixed_t **)luaL_checkudata(L, 1, META_NODEBBOX));
int i, j;
int n = lua_gettop(L);
if (!bbox)
return luaL_error(L, "accessed node bbox doesn't exist anymore.");
if (n < 3)
return luaL_error(L, "arguments 2 and/or 3 not given (expected node.bbox(child, coord))");
// get child
if (!lua_isnumber(L, 2)) {
enum nodechild_e field = luaL_checkoption(L, 2, nodechild_opt[0], nodechild_opt);
switch (field) {
case nodechild_right: i = 0; break;
case nodechild_left: i = 1; break;
default:
return luaL_error(L, "invalid node child \"%s\".", lua_tostring(L, 2));
}
}
else {
i = lua_tointeger(L, 2);
if (i < 0 || i > 1)
return 0;
}
// get bbox coord
if (!lua_isnumber(L, 3)) {
enum bbox_e field = luaL_checkoption(L, 3, bbox_opt[0], bbox_opt);
switch (field) {
case bbox_top: j = BOXTOP; break;
case bbox_bottom: j = BOXBOTTOM; break;
case bbox_left: j = BOXLEFT; break;
case bbox_right: j = BOXRIGHT; break;
default:
return luaL_error(L, "invalid bbox coordinate \"%s\".", lua_tostring(L, 3));
}
}
else {
j = lua_tointeger(L, 3);
if (j < 0 || j > 3)
return 0;
}
lua_pushinteger(L, bbox[i*4 + j]);
return 1;
}
// node.children[i]: i = 0 or 1
static int nodechildren_get(lua_State *L)
@ -1039,23 +1113,31 @@ static int bbox_get(lua_State *L)
lua_settop(L, 2);
if (!lua_isnumber(L, 2))
{
int field = luaL_checkoption(L, 2, NULL, valid_opt);
enum bbox_e field = luaL_checkoption(L, 2, bbox_opt[0], bbox_opt);
if (!bbox)
{
if (field == 0) {
if (field == bbox_valid) {
lua_pushboolean(L, 0);
return 1;
}
return luaL_error(L, "accessed node_t doesn't exist anymore.");
} else if (field == 0) {
return luaL_error(L, "accessed bbox doesn't exist anymore.");
} else if (field == bbox_valid) {
lua_pushboolean(L, 1);
return 1;
}
else switch (field) {
case bbox_top: i = BOXTOP; break;
case bbox_bottom: i = BOXBOTTOM; break;
case bbox_left: i = BOXLEFT; break;
case bbox_right: i = BOXRIGHT; break;
default: return 0;
}
}
else {
i = lua_tointeger(L, 2);
if (i < 0 || i > 3)
return 0;
}
i = lua_tointeger(L, 2);
if (i < 0 || i > 3)
return 0;
lua_pushinteger(L, bbox[i]);
return 1;
}
@ -1718,8 +1800,10 @@ int LUA_MapLib(lua_State *L)
lua_pop(L, 1);
luaL_newmetatable(L, META_NODEBBOX);
lua_pushcfunction(L, nodebbox_get);
lua_setfield(L, -2, "__index");
//lua_pushcfunction(L, nodebbox_get);
//lua_setfield(L, -2, "__index");
lua_pushcfunction(L, nodebbox_call);
lua_setfield(L, -2, "__call");
lua_pop(L, 1);
luaL_newmetatable(L, META_NODECHILDREN);