From 8906ff2e2755f6f8a2e52f5252afbcbea248c947 Mon Sep 17 00:00:00 2001
From: tomsmeding <tom.smeding@gmail.com>
Date: Sun, 1 Jan 2017 12:03:58 +0100
Subject: instance_destroy that actually works; no more shared_ptr

---
 main.cpp | 58 ++++++++++++++++++++++++++++++++++++++++++++++++----------
 1 file changed, 48 insertions(+), 10 deletions(-)

(limited to 'main.cpp')

diff --git a/main.cpp b/main.cpp
index a10231e..b279d78 100644
--- a/main.cpp
+++ b/main.cpp
@@ -13,9 +13,10 @@
 using namespace std;
 
 
-static shared_ptr<Object> makeobjectbyname(int x,int y,const char *name){
+__attribute__((unused))
+static Object* makeobjectbyname(int x,int y,const char *name){
 
-#define X(objname) if(strcmp(name,#objname)==0)return make_shared<objname>(x,y);
+#define X(objname) if(strcmp(name,#objname)==0)return new objname(x,y);
 OBJECT_CLASSES_XLIST
 #undef X
 
@@ -28,6 +29,37 @@ Global global;
 sf::RenderWindow window;
 
 
+void applyObjectChanges(){
+	set<Object*> seen;
+	for(Object *obj : global.objects_todelete){
+		if(seen.insert(obj).second){
+			delete obj;
+			global.objects.erase(obj);
+		}
+	}
+	global.objects_todelete.clear();
+}
+
+void applyObjectChanges(set<Object*>::iterator &it){
+	bool incremented=false;
+	set<Object*> seen;
+	for(Object *obj : global.objects_todelete){
+		if(seen.insert(obj).second){
+			delete obj;
+			if(it!=global.objects.end()&&*it==obj){
+				++it;
+				incremented=true;
+			}
+			global.objects.erase(obj);
+		}
+	}
+	global.objects_todelete.clear();
+	if(!incremented){
+		++it;
+	}
+}
+
+
 void eventCycle(){
 	sf::Event event;
 	while(window.pollEvent(event)){
@@ -42,14 +74,18 @@ void eventCycle(){
 		}
 	}
 
-	for(int i=0;i<(int)global.objects.size();i++){
-		global.objects[i]->step();
+	for(set<Object*>::iterator it=global.objects.begin();
+			it!=global.objects.end();
+			applyObjectChanges(it)){
+		(*it)->step();
 	}
 
 	window.clear(sf::Color::White);
 
-	for(int i=0;i<(int)global.objects.size();i++){
-		global.objects[i]->draw();
+	for(set<Object*>::iterator it=global.objects.begin();
+			it!=global.objects.end();
+			applyObjectChanges(it)){
+		(*it)->draw();
 	}
 
 	window.display();
@@ -63,15 +99,17 @@ int main(void){
 	window.create(sf::VideoMode(640,480),GAME_NAME);
 	window.setVerticalSyncEnabled(true);
 
-	global.objects.push_back(makeobjectbyname(0,0,"obj_control"));
-	global.objects[0]->create();
+	instance_create<obj_control>(0,0);
+	applyObjectChanges();
 
 	while(window.isOpen()){
 		eventCycle();
 	}
 
-	for(shared_ptr<Object> p : global.objects){
-		p->destroy();
+	for(set<Object*>::iterator it=global.objects.begin();
+			it!=global.objects.end();
+			applyObjectChanges(it)){
+		instance_destroy(*it);
 	}
 }
 
-- 
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