work on layers

include/utils/App/App.h

@@ -143,6 +143,14 @@ namespace Archimedes {
             }
 
             virtual void unload(std::string name) {
+
+                //unload modules that depend on the one we are unloading
+                for(std::string s : runOrder) {
+                    if(modules[s]->deps.find(name) != modules[s]->deps.end()) {
+                        unload(s);
+                    }
+                }
+
                 Module* m = modules[name];
                 void* h = m->getHandle();
 

include/utils/Layers/Layerstack.h

@@ -16,9 +16,11 @@ namespace Archimedes {
                 }
             }
 
-            void push(Layer* l) { 
-                lstack.push_front(l);
-                l->onAttach();
+            void push(Layer* l) {
+                if(l) {
+                    lstack.push_front(l);
+                    l->onAttach();
+                }
             }
 
             void pop() {

include/utils/Renderer/RendererOpenGL/RendererOpenGL.h

@@ -21,13 +21,13 @@ namespace Archimedes {
                 return glewInit() == GLEW_OK;
             };
 
-            void render(std::list<renderCmd*> cmdList, int& w, int& h) {
+            void render(std::list<std::function<void()>> cmdList, int& w, int& h) {
 
                 glViewport(0, 0, w, h);
 
                 glClear(GL_COLOR_BUFFER_BIT);
 
-                for(auto* f : cmdList)
+                for(auto f : cmdList)
                     f();
             }
     };