static int
ltest(lua_State *L) {
struct sprite *s = self(L);
struct srt srt;
fill_srt(L,&srt,4);
float x = luaL_checknumber(L, 2);
float y = luaL_checknumber(L, 3);
struct sprite * m = sprite_test(s, &srt, x*SCREEN_SCALE, y*SCREEN_SCALE);
if (m == NULL)
return 0;
if (m==s) {
lua_settop(L,1);
return 1;
}
lua_settop(L,1);
int depth = unwind(L, s , m);
if (depth < 0) {
return luaL_error(L, "Unwind an invalid sprite");
}
int i;
lua_pushvalue(L,1);
for (i=depth+1;i>1;i--) {
struct sprite * tmp = (struct sprite *)lua_touserdata(L, i);
tmp = lookup(L, tmp);
if (tmp == NULL) {
return luaL_error(L, "find an invalid sprite");
}
lua_replace(L, -2);
}
return 1;
}
static int
lgetwpos(lua_State *L) {
struct sprite *s = self(L);
if (s->type == TYPE_ANCHOR) {
struct matrix* mat = s->s.mat;
lua_pushnumber(L,mat->m[4] /(float)SCREEN_SCALE);
lua_pushnumber(L,mat->m[5] /(float)SCREEN_SCALE);
return 2;
} else {
struct srt srt;
fill_srt(L,&srt,2);
struct sprite *t = (struct sprite *)lua_touserdata(L, 3);
if (t == NULL) {
luaL_error(L, "Need target sprite");
}
int pos[2];
if (sprite_pos(s, &srt, t, pos) == 0) {
lua_pushinteger(L, pos[0]);
lua_pushinteger(L, pos[1]);
return 2;
} else {
return 0;
}
}
return luaL_error(L, "Only anchor can get world matrix");
}
static int
lmulti_draw(lua_State *L) {
struct sprite *s = self(L);
int cnt = (int)luaL_checkinteger(L,3);
if (cnt == 0)
return 0;
luaL_checktype(L,4,LUA_TTABLE);
luaL_checktype(L,5,LUA_TTABLE);
if (lua_rawlen(L, 4) < cnt) {
return luaL_error(L, "matrix length less then particle count");
}
struct srt srt;
fill_srt(L, &srt, 2);
int i;
for (i = 0; i < cnt; i++) {
lua_rawgeti(L, 4, i+1);
lua_rawgeti(L, 5, i+1);
struct matrix * mat = (struct matrix *)lua_touserdata(L, -2);
s->t.mat = mat;
s->t.color = (uint32_t)lua_tounsigned(L, -1);
lua_pop(L, 2);
sprite_draw(s, &srt);
}
s->t.mat = NULL;
return 0;
}
static int
lgetwpos(lua_State *L) {
struct sprite *s = self(L);
if (s->type == TYPE_ANCHOR) {
struct matrix* mat = s->s.mat;
lua_pushnumber(L,mat->m[4] /(float)SCREEN_SCALE);
lua_pushnumber(L,mat->m[5] /(float)SCREEN_SCALE);
return 2;
} else {
struct srt srt;
fill_srt(L,&srt,2);
struct matrix tmp;
sprite_matrix(s, &tmp);
int pos[2];
if (sprite_pos(s, &srt, &tmp, pos) == 0) {
lua_pushinteger(L, pos[0]);
lua_pushinteger(L, pos[1]);
return 2;
} else {
return 0;
}
}
return luaL_error(L, "Only anchor can get world matrix");
}
static int
lmulti_draw(lua_State *L) {
struct sprite *s = self(L);
int cnt = (int)luaL_checkinteger(L,3);
if (cnt == 0)
return 0;
int n = lua_gettop(L);
luaL_checktype(L,4,LUA_TTABLE);
luaL_checktype(L,5,LUA_TTABLE);
if (lua_rawlen(L, 4) < cnt) {
return luaL_error(L, "matrix length less then particle count");
}
if (n == 6) {
luaL_checktype(L,6,LUA_TTABLE);
if (lua_rawlen(L, 6) < cnt) {
return luaL_error(L, "additive length less then particle count");
}
}
struct srt srt;
fill_srt(L, &srt, 2);
if (s->t.mat == NULL) {
s->t.mat = &s->mat;
matrix_identity(&s->mat);
}
struct matrix *parent_mat = s->t.mat;
uint32_t parent_color = s->t.color;
int i;
if (n == 5) {
for (i = 0; i < cnt; i++) {
lua_rawgeti(L, 4, i+1);
lua_rawgeti(L, 5, i+1);
s->t.mat = (struct matrix *)lua_touserdata(L, -2);
s->t.color = (uint32_t)lua_tounsigned(L, -1);
lua_pop(L, 2);
sprite_draw_as_child(s, &srt, parent_mat, parent_color);
}
}else {
for (i = 0; i < cnt; i++) {
lua_rawgeti(L, 4, i+1);
lua_rawgeti(L, 5, i+1);
lua_rawgeti(L, 6, i+1);
s->t.mat = (struct matrix *)lua_touserdata(L, -3);
s->t.color = (uint32_t)lua_tounsigned(L, -2);
s->t.additive = (uint32_t)lua_tounsigned(L, -1);
lua_pop(L, 3);
sprite_draw_as_child(s, &srt, parent_mat, parent_color);
}
}
s->t.mat = parent_mat;
s->t.color = parent_color;
return 0;
}
/*
userdata sprite
table { .x .y .sx .sy .rot }
*/
static int
ldraw(lua_State *L) {
struct sprite *s = self(L);
struct srt srt;
fill_srt(L,&srt,2);
sprite_draw(s, &srt);
return 0;
}
/*
userdata sprite
table { .x .y .sx .sy .rot }
*/
static int
ldraw(lua_State *L) {
struct sprite *s = self(L);
struct srt srt;
fill_srt(L,&srt,2);
struct program_param pp;
fill_pp(L,&pp,3);
sprite_draw(s, &srt, &pp);
return 0;
}
static int
laabb(lua_State *L) {
struct sprite *s = self(L);
struct srt srt;
fill_srt(L,&srt,2);
int aabb[4];
sprite_aabb(s, &srt, aabb);
int i;
for (i=0;i<4;i++) {
lua_pushinteger(L, aabb[i]);
}
return 4;
}