+/*! \file
+ * \brief Metascene implementation
+ *
+ * Loading starts at `MetaScene::load`, which calls `ts_load` (libtreestore)
+ * to load the metascene description tree into memory. Then `proc_node` is
+ * called at the root to recursively process the tree. `scenefile` nodes are
+ * handed over to `proc_scenefile`, which will trigger scene loading for any
+ * nodes with a `file` attribute. Scene loading is handled by requesting the
+ * filename from the scene resource manager, which is of type [SceneSet](\ref SceneSet).
+ */
+#include <assert.h>
+#include <string>
+#include <regex>
#include "metascene.h"
#include "scene.h"
-#include "datamap.h"
#include "treestore.h"
+#include "logger.h"
+#include "app.h"
-#ifdef WIN32
+#if defined(WIN32) || defined(__WIN32__)
#include <malloc.h>
#else
#include <alloca.h>
#endif
-static bool proc_node(Scene *scn, struct ts_node *node);
+struct MaterialEdit {
+ std::regex name_re;
+ int attr;
+ Texture *tex;
+};
+
+static bool proc_node(MetaScene *mscn, struct ts_node *node);
+static bool proc_scenefile(MetaScene *mscn, struct ts_node *node);
+static bool proc_mtledit(MetaScene *mscn, MaterialEdit *med, struct ts_node *node);
+static bool proc_music(MetaScene *mscn, struct ts_node *node);
+static void apply_mtledit(Scene *scn, const MaterialEdit &med);
+static void apply_mtledit(Material *mtl, const MaterialEdit &med);
static struct ts_attr *attr_inscope(struct ts_node *node, const char *name);
-bool load_scene(Scene *scn, const char *fname)
+static void print_scene_graph(SceneNode *n, int level);
+
+
+MetaScene::MetaScene()
+{
+ walk_mesh = 0;
+ music = 0;
+}
+
+MetaScene::~MetaScene()
+{
+ delete walk_mesh;
+ delete music;
+}
+
+bool MetaScene::load(const char *fname)
{
struct ts_node *root = ts_load(fname);
if(!root || strcmp(root->name, "scene") != 0) {
ts_free_tree(root);
- fprintf(stderr, "failed to load scene metadata: %s\n", fname);
+ error_log("failed to load scene metadata: %s\n", fname);
return false;
}
- bool res = proc_node(scn, root);
+ bool res = proc_node(this, root);
ts_free_tree(root);
+
+ /*info_log("loaded scene: %s\n", fname);
+ info_log("scene graph:\n");
+ print_scene_graph(scn->nodes, 0);
+ */
return res;
}
-static bool proc_node(Scene *scn, struct ts_node *node)
+void MetaScene::update(float dt)
+{
+ int nscn = scenes.size();
+ for(int i=0; i<nscn; i++) {
+ scenes[i]->update(dt);
+ }
+}
+
+void MetaScene::draw() const
+{
+ int nscn = scenes.size();
+ for(int i=0; i<nscn; i++) {
+ scenes[i]->draw();
+ }
+}
+
+SceneNode *MetaScene::find_node(const char *name) const
+{
+ int num = scenes.size();
+ for(int i=0; i<num; i++) {
+ SceneNode *n = scenes[i]->find_node(name);
+ if(n) return n;
+ }
+ return 0;
+}
+
+SceneNode *MetaScene::match_node(const char *qstr) const
+{
+ int num = scenes.size();
+ for(int i=0; i<num; i++) {
+ SceneNode *n = scenes[i]->match_node(qstr);
+ if(n) return n;
+ }
+ return 0;
+}
+
+std::list<SceneNode*> MetaScene::match_nodes(const char *qstr) const
+{
+ std::list<SceneNode*> res;
+ int num = scenes.size();
+ for(int i=0; i<num; i++) {
+ std::list<SceneNode*> tmp = scenes[i]->match_nodes(qstr);
+ if(!tmp.empty()) {
+ res.splice(res.end(), tmp);
+ }
+ }
+ return std::move(res);
+}
+
+Scene *MetaScene::extract_nodes(const char *qstr)
+{
+ Scene *scn = 0;
+ int nscn = scenes.size();
+ for(int i=0; i<nscn; i++) {
+ Scene *tmp = scenes[i]->extract_nodes(qstr);
+ if(tmp) {
+ if(!scn) {
+ scn = tmp;
+ } else {
+ scn->merge(tmp);
+ delete tmp;
+ }
+ }
+ }
+ return scn;
+}
+
+static bool proc_node(MetaScene *mscn, struct ts_node *node)
{
struct ts_node *c = node->child_list;
while(c) {
- if(!proc_node(scn, c)) {
+ if(!proc_node(mscn, c)) {
return false;
}
c = c->next;
// do this last to allow other contents of the node to do their thing
if(strcmp(node->name, "scenefile") == 0) {
- const char *fname = ts_get_attr_str(node, "file");
- if(fname) {
- struct ts_attr *adpath = attr_inscope(node, "datapath");
- if(adpath && adpath->val.type == TS_STRING) {
- printf("adding data path: %s\n", adpath->val.str);
- datamap_set_path(adpath->val.str);
+ return proc_scenefile(mscn, node);
+
+ } else if(strcmp(node->name, "remap") == 0) {
+ const char *match = ts_get_attr_str(node, "match");
+ const char *replace = ts_get_attr_str(node, "replace");
+ if(match && replace) {
+ mscn->datamap.map(match, replace);
+ }
+
+ } else if(strcmp(node->name, "music") == 0) {
+ return proc_music(mscn, node);
+ }
+
+ return true;
+}
+
+
+
+struct SceneData {
+ MetaScene *meta;
+ std::string walkmesh_regexp, spawn_regexp;
+ std::vector<MaterialEdit> mtledit;
+};
+
+/*! Processes a `scenefile` node. And kicks off scene loading (if necessary) by
+ * calling `SceneSet::get`.
+ */
+static bool proc_scenefile(MetaScene *mscn, struct ts_node *node)
+{
+ const char *fname = ts_get_attr_str(node, "file");
+ if(fname) {
+ SceneData *sdat = new SceneData;
+ sdat->meta = mscn;
+
+ // datapath
+ struct ts_attr *adpath = attr_inscope(node, "datapath");
+ if(adpath && adpath->val.type == TS_STRING) {
+ mscn->datamap.set_path(adpath->val.str);
+ }
+
+ // strip path
+ struct ts_attr *aspath = attr_inscope(node, "strip_path");
+ if(aspath && aspath->val.type == TS_NUMBER) {
+ mscn->datamap.set_strip(aspath->val.inum);
+ }
+
+ // walkmesh
+ struct ts_attr *awmesh = attr_inscope(node, "walkmesh");
+ if(awmesh && awmesh->val.type == TS_STRING) {
+ sdat->walkmesh_regexp = std::string(awmesh->val.str);
+ }
+
+ // spawn node
+ struct ts_attr *awspawn = attr_inscope(node, "spawn");
+ if(awspawn) {
+ switch(awspawn->val.type) {
+ case TS_VECTOR:
+ mscn->start_pos = Vec3(awspawn->val.vec[0], awspawn->val.vec[1],
+ awspawn->val.vec[2]);
+ break;
+
+ case TS_STRING:
+ default:
+ sdat->spawn_regexp = std::string(awspawn->val.str);
+ }
+ }
+ if((awspawn = attr_inscope(node, "spawn_rot")) && awspawn->val.type == TS_VECTOR) {
+ Quat rot;
+ rot.rotate(Vec3(1, 0, 0), deg_to_rad(awspawn->val.vec[0]));
+ rot.rotate(Vec3(0, 1, 0), deg_to_rad(awspawn->val.vec[1]));
+ rot.rotate(Vec3(0, 0, 1), deg_to_rad(awspawn->val.vec[2]));
+ mscn->start_rot = rot;
+ }
+
+ int namesz = mscn->datamap.lookup(fname, 0, 0);
+ char *namebuf = (char*)alloca(namesz + 1);
+ if(mscn->datamap.lookup(fname, namebuf, namesz + 1)) {
+ fname = namebuf;
+ }
+
+ // material edits are kept in a list to be applied when the scene has been loaded
+ struct ts_node *child = node->child_list;
+ while(child) {
+ MaterialEdit medit;
+ if(proc_mtledit(mscn, &medit, child)) {
+ sdat->mtledit.push_back(medit);
+ }
+ child = child->next;
+ }
+
+ Scene *newscn = sceneman.get(fname);
+ /* NOTE: setting all these after get() is not a race condition, because
+ * scene_loaded() which uses this, will only run in our main loop during
+ * SceneSet::update() on the main thread.
+ */
+ newscn->datamap = mscn->datamap;
+ mscn->datamap.clear();
+
+ newscn->metascn = mscn;
+ mscn->scndata[newscn] = sdat;
+ }
+ return true;
+}
+
+bool MetaScene::scene_loaded(Scene *newscn)
+{
+ SceneData *sdat = (SceneData*)scndata[newscn];
+ if(!sdat) {
+ error_log("MetaScene::scene_loaded called, but corresponding SceneData not found\n");
+ return false;
+ }
+
+ // extract the walk mesh if necessary
+ Scene *wscn;
+ if(!sdat->walkmesh_regexp.empty() && (wscn = newscn->extract_nodes(sdat->walkmesh_regexp.c_str()))) {
+ // apply all transformations to the meshes
+ wscn->apply_xform();
+
+ int nmeshes = wscn->meshes.size();
+ for(int i=0; i<nmeshes; i++) {
+ Mesh *m = wscn->meshes[i];
+
+ if(walk_mesh) {
+ walk_mesh->append(*m);
+ } else {
+ walk_mesh = m;
+ wscn->remove_mesh(m); // to save it from destruction
+ }
+ }
+
+ delete wscn;
+ }
+
+ // extract the spawn node
+ if(!sdat->spawn_regexp.empty() && (wscn = newscn->extract_nodes(sdat->spawn_regexp.c_str()))) {
+
+ int nmeshes = wscn->meshes.size();
+ int nnodes = wscn->nodes ? wscn->nodes->get_num_children() : 0;
+
+ if(nmeshes) {
+ Vec3 pos;
+ for(int i=0; i<nmeshes; i++) {
+ const Sphere &bsph = wscn->meshes[i]->get_bsphere();
+ pos += bsph.center;
}
+ pos /= (float)nmeshes;
+ sdat->meta->start_pos = pos;
+
+ } else if(nnodes) {
+ // just use the first one
+ SceneNode *first = wscn->nodes->get_child(0);
+ sdat->meta->start_pos = first->get_position();
+ sdat->meta->start_rot = first->get_rotation();
+ }
+ delete wscn;
+ }
+
+ int num_medits = sdat->mtledit.size();
+ for(int i=0; i<num_medits; i++) {
+ // perform material edits
+ apply_mtledit(newscn, sdat->mtledit[i]);
+ }
+
+ scenes.push_back(newscn);
+ return true;
+}
+
+static bool proc_mtledit(MetaScene *mscn, MaterialEdit *med, struct ts_node *node)
+{
+ if(strcmp(node->name, "mtledit") != 0) {
+ return false;
+ }
+
+ const char *restr = ".*";
+ struct ts_attr *amtl = ts_get_attr(node, "material");
+ if(amtl && amtl->val.type == TS_STRING) {
+ restr = amtl->val.str;
+ }
+
+ med->name_re = std::regex(restr);
+
+ node = node->child_list;
+ while(node) {
+ struct ts_node *cn = node;
+ node = node->next;
+
+ if(strcmp(cn->name, "texture") == 0) {
+ // add/change/remove a texture
+ struct ts_attr *atype = ts_get_attr(cn, "type");
+ struct ts_attr *afile = ts_get_attr(cn, "file");
- int namesz = datamap_lookup(fname, 0, 0);
- char *namebuf = (char*)alloca(namesz + 1);
- if(datamap_lookup(fname, namebuf, namesz + 1)) {
- fname = namebuf;
+ int textype = MTL_TEX_DIFFUSE;
+ if(atype) {
+ if(atype->val.type == TS_STRING) {
+ textype = mtl_parse_type(atype->val.str);
+ } else if(atype->val.type == TS_NUMBER) {
+ textype = atype->val.inum;
+ if(textype < 0 || textype >= NUM_MTL_TEXTURES) {
+ error_log("invalid texture in mtledit: %d\n", textype);
+ continue;
+ }
+ } else {
+ error_log("unexpected texture type in mtledit: %s\n", atype->val.str);
+ continue;
+ }
}
- if(!(scn->load(fname, SCNLOAD_FLIPTEX))) {
- return false;
+ med->attr = textype;
+
+ if(!afile || !afile->val.str || !*afile->val.str) {
+ // remove
+ med->tex = 0;
+ } else {
+ med->tex = texman.get_texture(afile->val.str, TEX_2D, &mscn->datamap);
}
}
- datamap_reset();
+ // TODO add more edit modes
+ }
- } else if(strcmp(node->name, "remap") == 0) {
- const char *match = ts_get_attr_str(node, "match");
- const char *replace = ts_get_attr_str(node, "replace");
- if(match && replace) {
- datamap_map(match, replace);
+ return true;
+}
+
+static void apply_mtledit(Scene *scn, const MaterialEdit &med)
+{
+ // search all the objects to find matching material names
+ int nobj = scn->objects.size();
+ for(int i=0; i<nobj; i++) {
+ Object *obj = scn->objects[i];
+ if(std::regex_match(obj->mtl.name, med.name_re)) {
+ apply_mtledit(&obj->mtl, med);
}
}
+}
+static bool proc_music(MetaScene *mscn, struct ts_node *node)
+{
+ const char *fname = ts_get_attr_str(node, "file");
+ if(fname) {
+ SceneData *sdat = new SceneData;
+ sdat->meta = mscn;
+
+ // datapath
+ struct ts_attr *adpath = attr_inscope(node, "datapath");
+ if(adpath && adpath->val.type == TS_STRING) {
+ mscn->datamap.set_path(adpath->val.str);
+ }
+
+ int namesz = mscn->datamap.lookup(fname, 0, 0);
+ char *namebuf = (char*)alloca(namesz + 1);
+ if(mscn->datamap.lookup(fname, namebuf, namesz + 1)) {
+ fname = namebuf;
+ }
+
+ OggVorbisStream *ovstream = new OggVorbisStream;
+ if(!ovstream->open(fname)) {
+ delete ovstream;
+ return false;
+ }
+
+ delete mscn->music;
+ mscn->music = ovstream;
+ }
return true;
}
+static void apply_mtledit(Material *mtl, const MaterialEdit &med)
+{
+ // TODO more edit modes...
+ if(med.tex) {
+ mtl->add_texture(med.tex, med.attr);
+ } else {
+ Texture *tex = mtl->stdtex[med.attr];
+ if(tex) {
+ mtl->remove_texture(tex);
+ }
+ }
+}
+
static struct ts_attr *attr_inscope(struct ts_node *node, const char *name)
{
struct ts_attr *attr = 0;
}
return attr;
}
+
+static void print_scene_graph(SceneNode *n, int level)
+{
+ if(!n) return;
+
+ for(int i=0; i<level; i++) {
+ info_log(" ");
+ }
+
+ int nobj = n->get_num_objects();
+ if(nobj) {
+ info_log("%s - %d obj\n", n->get_name(), n->get_num_objects());
+ } else {
+ info_log("%s\n", n->get_name());
+ }
+
+ for(int i=0; i<n->get_num_children(); i++) {
+ print_scene_graph(n->get_child(i), level + 1);
+ }
+}
projects / laserbrain_demo / blobdiff