X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?p=laserbrain_demo;a=blobdiff_plain;f=src%2Fmetascene.cc;h=c46742032d555b25f150da4eaec4d0aa77fadb6e;hp=21e9093c56eb90db56a8a4786882f79a7219c083;hb=0d27f859021b4af5dbb5404ef5af012546abf335;hpb=21f74bf587d9b7a76bc1ee83db02cb8c243dc567

diff --git a/src/metascene.cc b/src/metascene.cc
index 21e9093..c467420 100644
--- a/src/metascene.cc
+++ b/src/metascene.cc
@@ -1,26 +1,56 @@
+/*! \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 "objmesh.h"
 #include "treestore.h"
 #include "logger.h"
+#include "app.h"
+#include "dbg_gui.h"
 
-#ifdef WIN32
+#if defined(WIN32) || defined(__WIN32__)
 #include <malloc.h>
 #else
 #include <alloca.h>
 #endif
 
-struct MaterialEdit {
-	std::regex name_re;
+enum MaterialEditType {
+	MTL_EDIT_TEXTURE,
+	MTL_EDIT_MIRROR
+};
+
+struct MaterialEditTexture {
 	int attr;
 	Texture *tex;
 };
 
+struct MaterialEditMirror {
+	float reflectivity;
+};
+
+struct MaterialEdit {
+	std::regex name_re;
+	MaterialEditType type;
+
+	MaterialEditTexture tex;
+	MaterialEditMirror mirror;
+};
+
 static bool proc_node(MetaScene *mscn, struct ts_node *node);
 static bool proc_scenefile(MetaScene *mscn, struct ts_node *node);
-static bool proc_mtledit(MaterialEdit *med, struct ts_node *node, TextureSet *texset);
+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);
@@ -28,18 +58,24 @@ static struct ts_attr *attr_inscope(struct ts_node *node, const char *name);
 static void print_scene_graph(SceneNode *n, int level);
 
 
-MetaScene::MetaScene(SceneSet *sman, TextureSet *tman)
+MetaScene::MetaScene()
 {
-	sceneman = sman;
-	texman = tman;
 	walk_mesh = 0;
+	music = 0;
+	mirrors = 0;
 }
 
 MetaScene::~MetaScene()
 {
 	delete walk_mesh;
-}
+	delete music;
 
+	while(mirrors) {
+		FlatMirror *m = mirrors;
+		mirrors = mirrors->next;
+		delete m;
+	}
+}
 
 bool MetaScene::load(const char *fname)
 {
@@ -62,20 +98,168 @@ bool MetaScene::load(const char *fname)
 
 void MetaScene::update(float dt)
 {
+	bool expanded;
+	static char text[256];
+	if(debug_gui) {
+		ImGui::Begin("MetaScene nodes", 0, 0);
+		ImGui::Columns(2);
+
+		static bool once;
+		if(!once) {
+			float x = ImGui::GetColumnOffset(1);
+			ImGui::SetColumnOffset(1, x * 1.7);
+			once = true;
+		}
+	}
+
 	int nscn = scenes.size();
 	for(int i=0; i<nscn; i++) {
+
+		if(debug_gui) {
+			if(scenes[i]->name.empty()) {
+				sprintf(text, "scene %3d", i);
+			} else {
+				sprintf(text, "scene %3d: %s", i, scenes[i]->name.c_str());
+			}
+			expanded = parent_expanded = ImGui::TreeNode(text);
+			ImGui::NextColumn();
+			ImGui::NextColumn();
+		}
+
 		scenes[i]->update(dt);
+
+		if(debug_gui && expanded) {
+			ImGui::TreePop();
+		}
+	}
+
+	if(debug_gui) {
+		ImGui::Columns(1);
+		ImGui::End();
 	}
 }
 
+// XXX not used, renderer draws
 void MetaScene::draw() const
 {
+	error_log("Don't call MetaScene::draw, use the Renderer\n");
 	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;
+}
+
+int MetaScene::calc_mirror_planes()
+{
+	int num_mirrors = 0;
+	while(mirrors) {
+		FlatMirror *m = mirrors;
+		mirrors = mirrors->next;
+		delete m;
+	}
+	mirrors = 0;
+	objmirror.clear();
+
+	int numscn = scenes.size();
+	for(int i=0; i<numscn; i++) {
+		Scene *scn = scenes[i];
+
+		int numobj = scn->objects.size();
+		for(int j=0; j<numobj; j++) {
+			Object *obj = scn->objects[j];
+
+			if(obj->mtl.flat_mirror && obj->get_type() == OBJ_MESH) {
+				const Mesh *mesh = ((ObjMesh*)obj)->mesh;
+				if(!mesh) continue;
+
+				// assume the object is actually flat, so grab the first triangle and make a plane
+				Triangle face = Triangle(0, (const Vec3*)mesh->get_attrib_data(MESH_ATTR_VERTEX),
+						mesh->get_index_data());
+				face.calc_normal();
+
+				FlatMirror *mir = new FlatMirror;
+				mir->plane.pt = face.v[0];
+				mir->plane.normal = face.normal;
+				mir->reflect = obj->mtl.reflect;
+
+				// check to see if we have found this mirror plane already
+				bool found = false;
+				FlatMirror *node = mirrors;
+				while(node) {
+					if(fabs(dot(mir->plane.normal, node->plane.normal)) < 1e-4 &&
+							fabs(dot(mir->plane.normal, normalize(mir->plane.pt - node->plane.pt))) < 1e-4) {
+						found = true;
+						break;
+					}
+				}
+
+				if(!found) {
+					mir->next = mirrors;
+					mirrors = mir;
+
+					objmirror[obj] = mir;	// associate with object
+					++num_mirrors;
+				} else {
+					delete mir;
+				}
+			}
+		}
+	}
+
+	return num_mirrors;
+}
+
 static bool proc_node(MetaScene *mscn, struct ts_node *node)
 {
 	struct ts_node *c = node->child_list;
@@ -94,8 +278,11 @@ static bool proc_node(MetaScene *mscn, struct ts_node *node)
 		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);
+			mscn->datamap.map(match, replace);
 		}
+
+	} else if(strcmp(node->name, "music") == 0) {
+		return proc_music(mscn, node);
 	}
 
 	return true;
@@ -104,21 +291,31 @@ static bool proc_node(MetaScene *mscn, struct ts_node *node)
 
 
 struct SceneData {
-	std::string walkmesh_regexp;
+	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) {
-			info_log("adding data path: %s\n", adpath->val.str);
-			datamap_set_path(adpath->val.str);
+			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
@@ -127,27 +324,52 @@ static bool proc_scenefile(MetaScene *mscn, struct ts_node *node)
 			sdat->walkmesh_regexp = std::string(awmesh->val.str);
 		}
 
-		int namesz = datamap_lookup(fname, 0, 0);
+		// 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(datamap_lookup(fname, namebuf, namesz + 1)) {
+		if(mscn->datamap.lookup(fname, namebuf, namesz + 1)) {
 			fname = namebuf;
 		}
 
-		// material edits
+		// 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(&medit, child, mscn->texman)) {
+			if(proc_mtledit(mscn, &medit, child)) {
 				sdat->mtledit.push_back(medit);
 			}
 			child = child->next;
 		}
 
-		Scene *newscn = mscn->sceneman->get(fname);
-		/* NOTE: setting this after get() is not a race condition, because
+		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;
 	}
@@ -183,6 +405,30 @@ bool MetaScene::scene_loaded(Scene *newscn)
 		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
@@ -193,7 +439,7 @@ bool MetaScene::scene_loaded(Scene *newscn)
 	return true;
 }
 
-static bool proc_mtledit(MaterialEdit *med, struct ts_node *node, TextureSet *texset)
+static bool proc_mtledit(MetaScene *mscn, MaterialEdit *med, struct ts_node *node)
 {
 	if(strcmp(node->name, "mtledit") != 0) {
 		return false;
@@ -204,7 +450,6 @@ static bool proc_mtledit(MaterialEdit *med, struct ts_node *node, TextureSet *te
 	if(amtl && amtl->val.type == TS_STRING) {
 		restr = amtl->val.str;
 	}
-
 	med->name_re = std::regex(restr);
 
 	node = node->child_list;
@@ -233,16 +478,37 @@ static bool proc_mtledit(MaterialEdit *med, struct ts_node *node, TextureSet *te
 				}
 			}
 
-			med->attr = textype;
+			med->tex.attr = textype;
 
 			if(!afile || !afile->val.str || !*afile->val.str) {
 				// remove
-				med->tex = 0;
+				med->tex.tex = 0;
 			} else {
-				med->tex = texset->get_texture(afile->val.str, TEX_2D);
+				med->tex.tex = texman.get_texture(afile->val.str, TEX_2D, &mscn->datamap);
+			}
+
+			med->type = MTL_EDIT_TEXTURE;
+			break;
+		}
+
+		if(strcmp(cn->name, "mirror") == 0) {
+			// make this object a flat mirror (hopefully the object is flat otherwise this won't work)
+			float refl = 1.0f;
+
+			struct ts_attr *arefl = ts_get_attr(cn, "reflect");
+			if(arefl) {
+				if(arefl->val.type == TS_NUMBER) {
+					refl = arefl->val.fnum;
+				} else {
+					error_log("invalid reflect attribute in mirror mtledit: %s\n", arefl->val.str);
+					continue;
+				}
 			}
+
+			med->type = MTL_EDIT_MIRROR;
+			med->mirror.reflectivity = refl;
+			break;
 		}
-		// TODO add more edit modes
 	}
 
 	return true;
@@ -254,22 +520,62 @@ static void apply_mtledit(Scene *scn, const MaterialEdit &med)
 	int nobj = scn->objects.size();
 	for(int i=0; i<nobj; i++) {
 		Object *obj = scn->objects[i];
-		if(std::regex_match(obj->get_name(), med.name_re)) {
+		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);
+	switch(med.type) {
+	case MTL_EDIT_TEXTURE:
+		if(med.tex.tex) {
+			mtl->add_texture(med.tex.tex, med.tex.attr);
+		} else {
+			Texture *tex = mtl->stdtex[med.tex.attr];
+			if(tex) {
+				mtl->remove_texture(tex);
+			}
 		}
+		break;
+
+	case MTL_EDIT_MIRROR:
+		mtl->flat_mirror = med.mirror.reflectivity > 1e-6;
+		mtl->reflect = med.mirror.reflectivity;
+		break;
 	}
 }