fiexd cleartraces command.

game/game.cpp

@@ -24,8 +24,20 @@ Game::Game()
 
 bool Game::cycle(float dt)
 {
+    static float total = 0.0;
     static float acc = 0.0;
+
+    //if (total == 0.0) {
+    //    float speed = 0.005;
+    //    m_state->players[0]->addCommand(new game::SetSpeedCommand(speed));
+    //    for (int i=0; i<100; i++) {
+    //        float a = 2.0 * M_PI * util::randf_0_1();
+    //        m_state->players[0]->addCommand(new game::ShootCommand(a));
+    //    }
+    //}
+
     acc += dt;
+    total += dt;
 
     float spawnInterval = 0.1;
     while(acc > spawnInterval) {
@@ -36,6 +48,13 @@ bool Game::cycle(float dt)
 
         m_state->players[0]->addCommand(new game::SetSpeedCommand(speed));
         m_state->players[0]->addCommand(new game::ShootCommand(a));
+
+        //static bool done = false;
+        //if (total >= 10.0 && !done) {
+        //    done = true;
+
+        //    m_state->players[0]->addCommand(new game::ClearTracesCommand());
+        //}
     }
 
     //std::cout<<"adding dt: " << dt << std::endl;

game/state/commands.cpp

@@ -2,6 +2,8 @@
 
 #include "trace.hpp"
 
+#include <iostream>
+
 namespace game {
     void ShootCommand::apply(Player *player, State *state) const
     {
@@ -51,11 +53,14 @@ namespace game {
 
     void ClearTracesCommand::apply(Player *player, State *state) const
     {
+        std::cout<<"clearing traces!!!" << std::endl;
+
         size_t i = 0;
         while(i < state->traces.size()) {
             Trace *trace = state->traces[i];
-            if (trace->missile == nullptr && trace->missile->player == player) {
-                state->deleteTrace(trace);
+            if (trace->missile == nullptr && trace->player == player) {
+                state->deleteTrace(i);
+
             } else {
                 i++;
             }

game/state/state.cpp

@@ -145,12 +145,9 @@ namespace game {
 
         // TODO
         // add points
-        //
+
         // TODO
         // message
-        //
-        // TODO
-        // respawn timer
     }
 
     void State::advancePlayerMissiles(float dt)
@@ -166,7 +163,9 @@ namespace game {
 
                 const bool isHit = (evt.hit != Hit::Nothing);
 
-                missile->trace->addPointFromMissile(isHit); // force point if missile gets destroyed a
+                if (missile->trace != nullptr) {
+                    missile->trace->addPointFromMissile(isHit); // force point if missile gets destroyed a
+                }
 
                 if (!isHit) {
                     i++;
@@ -192,6 +191,10 @@ namespace game {
 
                     addExplosionFromHit(&evt);
 
+                    if (missile->trace != nullptr) {
+                        missile->trace->finish();
+                    }
+
                     player->missiles.erase(player->missiles.begin() + i);
                     delete(missile);
                     //std::cout<<std::endl;
@@ -290,15 +293,32 @@ namespace game {
         traces.push_back(trace);
     }
 
+    void State::deleteTrace(size_t index)
+    {
+        if (index >= traces.size()) {
+            std::cerr << "can't find trace with invalid index " << index << std::endl;
+            return;
+        }
+
+        Trace *trace = traces[index];
+
+        //std::cout<<"removing a trace" << std::endl;
+        if (trace->missile != nullptr) {
+            // delete backlink.
+            // XXX: there's a missile without a trace now.
+            trace->missile->trace = nullptr;
+        }
+
+        traces.erase(traces.begin() + index);
+        delete(trace);
+    }
+
     void State::deleteTrace(Trace *trace)
     {
-        // TODO: if traces of running missile is deleted it is dangerous
-
         size_t i = 0;
         while(i < traces.size()) {
             if (traces[i] == trace) {
-                delete(trace);
-                traces.erase(traces.begin()+i);
+                deleteTrace(i);
                 break;
             }
         }

game/state/state.hpp

@@ -68,7 +68,10 @@ namespace game {
 
         // add a trace to the list of traces.
         void addTrace(Trace *trace);
-        void deleteTrace(Trace *trace);
+
+        // delete traces with this command
+        void deleteTrace(Trace *trace); // using a pointer
+        void deleteTrace(size_t index); // using an index
 
         /*************************************************************************/
         /* Rendering */

game/state/trace.cpp

@@ -4,6 +4,8 @@
 
 #include "missile.hpp"
 
+#include <iostream>
+
 namespace game {
     Trace::TracePoint::TracePoint(const Missile *missile)
         : position(missile->position)
@@ -11,7 +13,16 @@ namespace game {
     {
     }
 
-    Trace::Trace(const Missile *missile) : missile(missile), fidelityCounter(0)
+    Trace::~Trace()
+    {
+        //std::cout<<"~Trace()" << std::endl;
+    }
+
+    Trace::Trace(Missile *missile)
+        : missile(missile)
+        , player(missile->player)
+        , fidelityCounter(0)
+        , age(0.0)
     {
         points.push_back(TracePoint(missile));
     }
@@ -27,6 +38,7 @@ namespace game {
 
     void Trace::finish()
     {
+        //std::cout<<"trace finished now!" << std::endl;
         missile = nullptr;
     }
 }

game/state/trace.hpp

@@ -5,6 +5,7 @@
 
 namespace game {
     class Missile;
+    class Player;
 
     /*
      * Trace of a missile through the space.
@@ -12,7 +13,8 @@ namespace game {
      */
     class Trace {
         public:
-            Trace(const Missile *missile);
+            Trace(Missile *missile);
+            ~Trace();
 
             // Add the current position of the missile as a new point on the
             // trace.
@@ -39,11 +41,16 @@ namespace game {
             };
 
             std::vector<TracePoint> points;
-            const Missile *missile; // missile which creates this path.
+            Missile                *missile; // missile which creates this path.
+            Player                 *player;
 
             // counter which is incremented each time addPointFromMissile() is called.
             // when reaching a certain value the point is saved for
             // optimization.
             int fidelityCounter;
+
+            // age of the trace. if too old, it can be removed to save
+            // space/power
+            float age;
     };
 }