X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?p=laserbrain_demo;a=blobdiff_plain;f=src%2Fexman.cc;h=31ee1aec95457deb536f237c25fd593133c738f6;hp=28f3700c80aad471881484467e282ce2a7bdb686;hb=37b68f014b46922b885c6344d6b069cba3c9c3c5;hpb=b75b6703809abf0dc02f2e557ba73e9efbefa4d1

diff --git a/src/exman.cc b/src/exman.cc
index 28f3700..31ee1ae 100644
--- a/src/exman.cc
+++ b/src/exman.cc
@@ -1,13 +1,112 @@
+#include <float.h>
 #include <algorithm>
 #include "exman.h"
 #include "exhibit.h"
 #include "blob_exhibit.h"
 #include "treestore.h"
+#include "app.h"
+#include "geomdraw.h"
 
 static Exhibit *create_exhibit(const char *type);
 
+
+ExhibitSlot::ExhibitSlot(Exhibit *ex)
+{
+	this->ex = 0;
+
+	init(ex);
+}
+
+ExhibitSlot::~ExhibitSlot()
+{
+	detach_exhibit();
+
+	SceneNode *par = node.get_parent();
+	if(par) {
+		par->remove_child(&node);
+
+		while(node.get_num_children()) {
+			par->add_child(node.get_child(0));
+		}
+	}
+}
+
+
+void ExhibitSlot::init(Exhibit *ex)
+{
+	std::string node_name = "ExhibitSlot";
+	if(ex) {
+		if(ex->get_name()) {
+			node_name += std::string(":") + std::string(ex->get_name());
+		}
+
+		if(ex->node) {
+			if(ex->node->get_parent()) {
+				ex->node->get_parent()->add_child(&node);
+			}
+			node.set_position(ex->node->get_node_position());
+			node.set_rotation(ex->node->get_node_rotation());
+			ex->node->set_position(Vec3(0, 0, 0));
+			ex->node->set_rotation(Quat::identity);
+		}
+		attach_exhibit(ex);
+	} else {
+		this->ex = 0;
+	}
+
+	node.set_name(node_name.c_str());
+}
+
+bool ExhibitSlot::empty() const
+{
+	return ex == 0;
+}
+
+Exhibit *ExhibitSlot::get_exhibit() const
+{
+	return ex;
+}
+
+/* In the process of attaching the exhibit, we also steal the exhibit's node
+ * from its previous parent, and reparent it to the slot's node. As the slot's
+ * node itself should have been made a child of the original parent of the
+ * exhibit during init(), the initial state is we're interjecting a null node in
+ * the scene graph between the exhibit and its original parent.
+ *
+ * Attaching to a slot, implicitly detaches from the previous slot.
+ */
+bool ExhibitSlot::attach_exhibit(Exhibit *ex, ExSlotAttachMode mode)
+{
+	if(!ex || this->ex) return false;
+
+	if(ex->prev_slot && ex->prev_slot->ex == ex) {
+		ex->prev_slot->detach_exhibit();
+	}
+
+	if(mode != EXSLOT_ATTACH_TRANSIENT) {
+		ex->prev_slot = this;
+	}
+
+	node.add_child(ex->node);
+	this->ex = ex;
+	return true;
+}
+
+bool ExhibitSlot::detach_exhibit()
+{
+	if(!ex) return false;
+
+	node.remove_child(ex->node);
+	ex = 0;
+	return true;
+}
+
+
+// ---- exhibit manager implementation ----
+
 ExhibitManager::ExhibitManager()
 {
+	own_scn = 0;
 }
 
 ExhibitManager::~ExhibitManager()
@@ -17,11 +116,16 @@ ExhibitManager::~ExhibitManager()
 
 void ExhibitManager::clear()
 {
-	int num = (int)items.size();
+	// not deleting exhibit objects, as they will be deleted the own_scn destructor
+	items.clear();
+
+	int num = (int)exslots.size();
 	for(int i=0; i<num; i++) {
-		delete items[i];
+		delete exslots[i];
 	}
-	items.clear();
+	exslots.clear();
+
+	delete own_scn;	// this must be the last thing to destroy
 }
 
 void ExhibitManager::add(Exhibit *ex)
@@ -29,6 +133,8 @@ void ExhibitManager::add(Exhibit *ex)
 	std::vector<Exhibit*>::iterator it = std::find(items.begin(), items.end(), ex);
 	if(it == items.end()) {
 		items.push_back(ex);
+		own_scn->add_object(ex);
+		if(ex->node) own_scn->add_node(ex->node);
 	}
 }
 
@@ -37,6 +143,8 @@ bool ExhibitManager::remove(Exhibit *ex)
 	std::vector<Exhibit*>::iterator it = std::find(items.begin(), items.end(), ex);
 	if(it != items.end()) {
 		items.erase(it);
+		own_scn->remove_object(ex);
+		if(ex->node) own_scn->remove_node(ex->node);
 		return true;
 	}
 	return false;
@@ -51,30 +159,103 @@ bool ExhibitManager::load(MetaScene *mscn, const char *fname)
 		return false;
 	}
 
+	/* create our own scene to manage all exhibits not already in an existing scene
+	 * and add it to the metascene.
+	 * Also exhibit drawing happens due to the renderer drawing the metascene
+	 */
+	if(!own_scn) {
+		own_scn = new Scene;
+		own_scn->name = "ad-hoc exhibits";
+		mscn->scenes.push_back(own_scn);
+	}
+
 	struct ts_node *iter = root->child_list;
 	while(iter) {
 		struct ts_node *node = iter;
 		iter = iter->next;
 
-		if(strcmp(node->name, "item") == 0) {
-			SceneNode *snode;
-
-			const char *amatch = ts_get_attr_str(node, "match_node");
-			if(!amatch || !(snode = mscn->match_node(amatch))) {
-				error_log("ExhibitManager::load: regexp \"%s\" didn't match any nodes\n",
-						amatch ? amatch : "");
-				continue;
-			}
+		SceneNode *snode = 0;
 
+		if(strcmp(node->name, "item") == 0) {
 			Exhibit *ex;
 			const char *atype = ts_get_attr_str(node, "type");
 			if(!atype || !(ex = create_exhibit(atype))) {
 				error_log("failed to create exhibit of type: %s\n", atype);
 				continue;
 			}
+			const char *alabel = ts_get_attr_str(node, "label");
+			if(alabel) {
+				ex->set_name(alabel);
+			}
 
+			const char *amatch = ts_get_attr_str(node, "match_node");
+			if(amatch) {
+				if(!(snode = mscn->match_node(amatch))) {
+					error_log("ExhibitManager::load: regexp \"%s\" didn't match any nodes\n",
+							amatch ? amatch : "");
+					continue;
+				}
+			}
+
+			// add everything to our data structures
+			// equivalent to add_exhibit(ex), but without all the searching
+			own_scn->add_object(ex);
+			if(!snode) {
+				snode = new SceneNode;
+				snode->set_name(ex->get_name());
+				own_scn->add_node(snode);
+			}
 			ex->set_node(snode);
 			items.push_back(ex);
+
+			float *apos = ts_get_attr_vec(node, "pos");
+			if(apos) {
+				snode->set_position(Vec3(apos[0], apos[1], apos[2]));
+			}
+			float *arot_axis = ts_get_attr_vec(node, "rotaxis");
+			if(arot_axis) {
+				float arot_angle = ts_get_attr_num(node, "rotangle", 0.0f);
+				Vec3 axis = Vec3(arot_axis[0], arot_axis[1], arot_axis[2]);
+				Quat q;
+				q.set_rotation(axis, deg_to_rad(arot_angle));
+				snode->set_rotation(q);
+			}
+			struct ts_attr *ascale = ts_get_attr(node, "scale");
+			if(ascale) {
+				switch(ascale->val.type) {
+				case TS_NUMBER:
+					snode->set_scaling(Vec3(ascale->val.fnum, ascale->val.fnum, ascale->val.fnum));
+					break;
+				case TS_VECTOR:
+					snode->set_scaling(Vec3(ascale->val.vec[0], ascale->val.vec[1], ascale->val.vec[2]));
+				default:
+					break;
+				}
+			}
+
+			// create a new slot and attach the exhibit to it
+			ExhibitSlot *slot = new ExhibitSlot(ex);
+			exslots.push_back(slot);
+
+			// grab any extra exhibit data
+			const char *desc = ts_get_attr_str(node, "description");
+			const char *voice = ts_get_attr_str(node, "voiceover");
+			if(desc || voice) {
+				ExData exd;
+
+				if(desc) {
+					exd.text = std::string(desc);
+				}
+				if(voice) {
+					exd.voice = new OggVorbisStream;
+					if(!exd.voice->open(voice)) {
+						error_log("failed to open voiceover: %s\n", voice);
+						delete exd.voice;
+						exd.voice = 0;
+					}
+				}
+				ex->data.push_back(exd);
+			}
 		}
 	}
 
@@ -84,18 +265,76 @@ bool ExhibitManager::load(MetaScene *mscn, const char *fname)
 
 ExSelection ExhibitManager::select(const Ray &ray) const
 {
-	return ExSelection();	// TODO
+	ExSelection nearest;
+	nearest.dist = FLT_MAX;
+
+	int nitems = items.size();
+	for(int i=0; i<nitems; i++) {
+		ExSelection sel = items[i]->select(ray);
+		if(sel && sel.dist < nearest.dist) {
+			nearest = sel;
+		}
+	}
+
+	return nearest;
 }
 
 ExSelection ExhibitManager::select(const Sphere &sph) const
 {
-	return ExSelection();	// TODO
+	ExSelection sel;
+	if(!items.empty()) {
+		sel.ex = items[0];
+		sel.selsphere = sph;
+		sel.validmask = EXSEL_SPHERE;
+	}
+	return sel;	// TODO
+}
+
+// TODO optimize
+ExhibitSlot *ExhibitManager::nearest_empty_slot(const Vec3 &pos, float max_dist) const
+{
+	ExhibitSlot *nearest = 0;
+	float nearest_sqdist = max_dist * max_dist;
+
+	int nslots = exslots.size();
+	for(int i=0; i<nslots; i++) {
+		ExhibitSlot *slot = exslots[i];
+		if(!slot->empty()) continue;
+
+		Vec3 slotpos = slot->node.get_position();
+		float dsq = length_sq(pos - slotpos);
+		if(dsq < nearest_sqdist) {
+			nearest = slot;
+			nearest_sqdist = dsq;
+		}
+	}
+
+	return nearest;
+}
+
+void ExhibitManager::stash_exhibit(Exhibit *ex)
+{
+	// make sure it's not already stashed
+	if(std::find(stashed.begin(), stashed.end(), ex) != stashed.end()) {
+		return;
+	}
+	stashed.push_back(ex);
+
+	ex->prev_slot = 0;
+	if(ex->node->get_parent()) {
+		ex->node->get_parent()->remove_child(ex->node);
+	}
 }
 
 void ExhibitManager::update(float dt)
 {
 	int num = items.size();
 	for(int i=0; i<num; i++) {
+		// if the exhibit is not part of a scene graph, first call its
+		// node's update function (otherwise it would have been called recursively earlier)
+		if(items[i]->node && !items[i]->node->get_parent()) {
+			items[i]->node->update(dt);
+		}
 		items[i]->update(dt);
 	}
 }
@@ -104,9 +343,10 @@ void ExhibitManager::draw() const
 {
 	int num = items.size();
 	for(int i=0; i<num; i++) {
-		items[i]->pre_draw();
-		items[i]->draw();
-		items[i]->post_draw();
+		if(exsel_hover.ex == items[i]) {
+			const AABox &bvol = items[i]->get_aabox();
+			draw_geom_object(&bvol);
+		}
 	}
 }
 
@@ -117,7 +357,13 @@ static Exhibit *create_exhibit(const char *type)
 		return new Exhibit;
 	} else if(strcmp(type, "blobs") == 0) {
 		debug_log("creating blobs exhibit\n");
-		return new BlobExhibit;
+		BlobExhibit *b = new BlobExhibit;
+		if(!b->init()) {
+			delete b;
+			error_log("failed to initialize blobs exhibit\n");
+			return 0;
+		}
+		return b;
 	}
 	error_log("unknown exhibit type: %s\n", type);
 	return 0;