Add break_time_increase to perPlayerDifficulty

data/stk_config.xml

@@ -342,7 +342,7 @@
     <difficulties>
         <easiest>
             <mass value="1.0"/>
-            <engine brake-factor="2.5" max-speed-reverse-ratio="1.0" power="1.5" max-speed="1.5"/>
+            <engine brake-factor="2.5" brake-time-increase="1.5" max-speed-reverse-ratio="1.0" power="1.5" max-speed="1.5"/>
             <nitro consumption="0.7" max-speed-increase="1.3" duration="1.0" fade-out-time="1.0"/>
             <bubblegum time="0.5" speed-fraction="0.5" torque="0.5" fade-in-time="1.0"/>
             <rescue time="0.5"/>
@@ -359,7 +359,7 @@
         </easiest>
         <easy>
             <mass value="1.0"/>
-            <engine brake-factor="1.7" max-speed-reverse-ratio="1.0" power="1.2" max-speed="1.2"/>
+            <engine brake-factor="1.7" brake-time-increase="1.2" max-speed-reverse-ratio="1.0" power="1.2" max-speed="1.2"/>
             <nitro consumption="0.9" max-speed-increase="1.1" duration="1.0" fade-out-time="1.0"/>
             <bubblegum time="0.7" speed-fraction="0.7" torque="0.7" fade-in-time="1.0"/>
             <rescue time="0.7"/>
@@ -376,7 +376,7 @@
         </easy>
         <normal>
             <mass value="1.0"/>
-            <engine brake-factor="1.0" max-speed-reverse-ratio="1.0" power="1.0" max-speed="1.0"/>
+            <engine brake-factor="1.0" brake-time-increase="1.0" max-speed-reverse-ratio="1.0" power="1.0" max-speed="1.0"/>
             <nitro consumption="1.0" max-speed-increase="1.0" duration="1.0" fade-out-time="1.0"/>
             <bubblegum time="1.0" speed-fraction="1.0" torque="1.0" fade-in-time="1.0"/>
             <rescue time="1.0"/>
@@ -393,7 +393,7 @@
         </normal>
         <hard>
             <mass value="1.0"/>
-            <engine brake-factor="0.8" max-speed-reverse-ratio="0.8" power="0.8" max-speed="0.8"/>
+            <engine brake-factor="0.8" brake-time-increase="0.85" max-speed-reverse-ratio="0.8" power="0.8" max-speed="0.8"/>
             <nitro consumption="1.1" max-speed-increase="0.9" duration="1.0" fade-out-time="1.0"/>
             <bubblegum time="1.5" speed-fraction="1.5" torque="1.5" fade-in-time="1.0"/>
             <rescue time="1.5"/>
@@ -410,7 +410,7 @@
         </hard>
         <hardest>
             <mass value="1.0"/>
-            <engine brake-factor="0.5" max-speed-reverse-ratio="0.6" power="0.6" max-speed="0.6"/>
+            <engine brake-factor="0.5" brake-time-increase="0.7" max-speed-reverse-ratio="0.6" power="0.6" max-speed="0.6"/>
             <nitro consumption="1.2" max-speed-increase="0.8" duration="1.0" fade-out-time="1.0"/>
             <bubblegum time="2.0" speed-fraction="2.0" torque="2.0" fade-in-time="1.0"/>
             <rescue time="2.0"/>

src/karts/player_difficulty.cpp

@@ -32,8 +32,8 @@ PlayerDifficulty::PlayerDifficulty(const std::string &filename)
 {
     // Set all other values to undefined, so that it can later be tested
     // if everything is defined properly.
-    m_mass = m_brake_factor = m_rescue_time = m_explosion_time =
+    m_mass = m_brake_factor = m_brake_time_increase = m_rescue_time =
-        m_explosion_invulnerability_time = m_zipper_time =
+        m_explosion_time = m_explosion_invulnerability_time = m_zipper_time =
         m_zipper_fade_out_time = m_zipper_force = m_zipper_speed_gain =
         m_zipper_max_speed_increase = m_rubber_band_max_length =
         m_rubber_band_force = m_rubber_band_duration =
@@ -103,6 +103,7 @@ void PlayerDifficulty::getAllData(const XMLNode * root)
     if(const XMLNode *engine_node = root->getNode("engine"))
     {
         engine_node->get("brake-factor",            &m_brake_factor);
+        engine_node->get("brake-time-increase",     &m_brake_time_increase);
         engine_node->get("max-speed-reverse-ratio", &m_max_speed_reverse_ratio);
         engine_node->get("power",                   &m_engine_power);
         engine_node->get("max-speed",               &m_max_speed);

src/karts/player_difficulty.hpp

@@ -52,6 +52,10 @@ private:
     /** Braking factor * engine_power braking force. */
     float m_brake_factor;
 
+    /** Brake_time * m_brake_time_increase will increase the break time
+     * over time. */
+    float m_brake_time_increase;
+
     /** Time a kart is moved upwards after when it is rescued. */
     float m_rescue_time;
 
@@ -166,10 +170,15 @@ public:
     // ------------------------------------------------------------------------
     /** Returns the maximum engine power depending on difficulty. */
     float getMaxPower               () const {return m_engine_power;          }
+
     // ------------------------------------------------------------------------
     /** Get braking information. */
     float getBrakeFactor            () const {return m_brake_factor;          }
 
+    // ------------------------------------------------------------------------
+    /** Returns the additional brake factor which depends on time. */
+    float getBrakeTimeIncrease() const { return m_brake_time_increase; }
+
     // ------------------------------------------------------------------------
     /** Get maximum reverse speed ratio. */
     float getMaxSpeedReverseRatio   () const