Changeset 5388 in orxonox.OLD for trunk/src/lib/event/event_handler.cc

Timestamp:

Oct 16, 2005, 2:05:26 AM (20 years ago)

Author:

bensch

Message:

orxonox/trunk: implemented a t-Stack, for dynamic stacks, and integrated it into the Shell.

File:

• trunk/src/lib/event/event_handler.cc (modified) (4 diffs)

trunk/src/lib/event/event_handler.cc

@@ -26 +26 @@
 #include "class_list.h"
 
+#include "t_stack.h"
+
 using namespace std;
 
@@ -47 +49 @@
   this->state = ES_GAME;
   this->keyMapper = NULL;
+  this->stateStack = NULL;
 }
 
@@ -72 +75 @@
     }
   }
+  delete this->stateStack;
   delete this->keyMapper;
 
@@ -87 +91 @@
 void EventHandler::init(IniParser* iniParser)
 {
-  this->keyMapper = new KeyMapper();
-  this->keyMapper->loadKeyBindings(iniParser);
-}
+  if (this->keyMapper == NULL)
+  {
+    this->keyMapper = new KeyMapper();
+    this->keyMapper->loadKeyBindings(iniParser);
+  }
+  if (this->stateStack == NULL)
+    this->stateStack = new tStack<short>;
+}
+
+/**
+ * pushes the current State in the State-stack, and selects state
+ * @param state the new State to set
+ */
+void EventHandler::pushState(elState state)
+{
+  if (likely(state != ES_NULL && state != ES_ALL && this->stateStack != NULL))
+  {
+    this->stateStack->push(this->state);
+    this->setState(state);
+  }
+  else
+  {
+    PRINTF(2)("unable to push State\n");
+  }
+}
+
+/**
+ * this removes the topmost stack-entry and select the underlying one
+ * @returns the next stack-entry
+ */
+elState EventHandler::popState()
+{
+  if (unlikely(this->stateStack == NULL))
+    return ES_NULL;
+  elState state = (elState)this->stateStack->pop();
+  if (state == ES_NULL)
+  {
+    PRINTF(2)("No more states availiable. (unable to pop state)\n");
+    return ES_NULL;
+  }
+  else
+  {
+    this->setState(state);
+    return state;
+  }
+}
+
 
 /**