From: Wolfgang Becker <uafr@gmx.de>
Date: Sun, 9 Jul 2006 23:38:24 +0000 (+0000)
Subject: Made Snail and Mr.Tree change direction only once per active_update.
X-Git-Url: https://git.verplant.org/?a=commitdiff_plain;h=5b6a79df7b102dba6322bc923ece8c572ea56775;p=supertux.git

Made Snail and Mr.Tree change direction only once per active_update.
Riding down a moving platform still lokes strange; Mr.Tree walks uphill,
but not down again.

SVN-Revision: 3973
---

diff --git a/src/badguy/mrtree.cpp b/src/badguy/mrtree.cpp
index 9c4a0fa60..0e7970b9c 100644
--- a/src/badguy/mrtree.cpp
+++ b/src/badguy/mrtree.cpp
@@ -39,6 +39,7 @@ MrTree::MrTree(const lisp::Lisp& reader)
   sprite->set_action(dir == LEFT ? "large-left" : "large-right");
   sound_manager->preload("sounds/mr_tree.ogg");
   sound_manager->preload("sounds/mr_treehit.ogg");
+  recently_changed_direction = false;
 }
 
 void
@@ -75,13 +76,15 @@ MrTree::activate()
 void
 MrTree::active_update(float elapsed_time)
 {
+  recently_changed_direction = false;
   if ((mystate == STATE_INVINCIBLE) && (invincible_timer.check())) {
     mystate = STATE_NORMAL;
     activate();
   }
 
-  if (might_fall())
+  if (might_fall() && !recently_changed_direction )
   {
+    recently_changed_direction = true;
     dir = (dir == LEFT ? RIGHT : LEFT);
     activate();
   }
@@ -177,6 +180,8 @@ MrTree::collision_solid(const CollisionHit& hit)
   if(hit.top || hit.bottom) {
     physic.set_velocity_y(0);
   } else {
+    if( recently_changed_direction ) return;
+    recently_changed_direction = true;
     dir = dir == LEFT ? RIGHT : LEFT;
     activate();
   }
@@ -186,6 +191,8 @@ HitResponse
 MrTree::collision_badguy(BadGuy& , const CollisionHit& hit)
 {
   if(hit.left || hit.right) {
+    if( recently_changed_direction ) return CONTINUE;
+    recently_changed_direction = true;
     dir = dir == LEFT ? RIGHT : LEFT;
     activate();
   }
diff --git a/src/badguy/mrtree.hpp b/src/badguy/mrtree.hpp
index 02a433d83..9d99187de 100644
--- a/src/badguy/mrtree.hpp
+++ b/src/badguy/mrtree.hpp
@@ -42,8 +42,12 @@ protected:
   MyState mystate;
 
   Timer invincible_timer;
-
+   
   bool collision_squished(Player& player);
+
+private:
+  bool recently_changed_direction;
+  
 };
 
 #endif
diff --git a/src/badguy/snail.cpp b/src/badguy/snail.cpp
index 5df4e0e68..bc00a4f40 100644
--- a/src/badguy/snail.cpp
+++ b/src/badguy/snail.cpp
@@ -35,6 +35,7 @@ Snail::Snail(const lisp::Lisp& reader)
   sound_manager->preload("sounds/iceblock_bump.wav");
   sound_manager->preload("sounds/stomp.wav");
   sound_manager->preload("sounds/kick.wav");
+  recently_changed_direction = false;
 }
 
 Snail::Snail(const Vector& pos, Direction d)
@@ -43,6 +44,7 @@ Snail::Snail(const Vector& pos, Direction d)
   sound_manager->preload("sounds/iceblock_bump.wav");
   sound_manager->preload("sounds/stomp.wav");
   sound_manager->preload("sounds/kick.wav");
+  recently_changed_direction = false;
 }
 
 void
@@ -102,13 +104,16 @@ Snail::be_kicked()
 void
 Snail::active_update(float elapsed_time)
 {
+  recently_changed_direction = false;
   switch (state) {
 
     case STATE_NORMAL:
       if (might_fall(601)) {
-	dir = (dir == LEFT ? RIGHT : LEFT);
-	sprite->set_action(dir == LEFT ? "left" : "right");
-	physic.set_velocity_x(-physic.get_velocity_x());
+        if( recently_changed_direction ) break;
+        recently_changed_direction = true;
+	    dir = (dir == LEFT ? RIGHT : LEFT);
+	    sprite->set_action(dir == LEFT ? "left" : "right");
+	    physic.set_velocity_x(-physic.get_velocity_x());
       }
       break;
 
@@ -159,6 +164,8 @@ Snail::collision_solid(const CollisionHit& hit)
   switch(state) {
     
     case STATE_NORMAL:
+      if( recently_changed_direction ) break;
+      recently_changed_direction = true;
       dir = dir == LEFT ? RIGHT : LEFT;
       sprite->set_action(dir == LEFT ? "left" : "right");
       physic.set_velocity_x(-physic.get_velocity_x());       
@@ -184,7 +191,8 @@ Snail::collision_solid(const CollisionHit& hit)
         brick->try_break();
       }
 #endif
-      
+      if( recently_changed_direction ) break;
+      recently_changed_direction = true;
       dir = (dir == LEFT) ? RIGHT : LEFT;
       sprite->set_action(dir == LEFT ? "flat-left" : "flat-right");
 
@@ -202,6 +210,8 @@ Snail::collision_badguy(BadGuy& badguy, const CollisionHit& hit)
   switch(state) {
     case STATE_NORMAL:
       if(hit.left || hit.right) {
+        if( recently_changed_direction ) return CONTINUE;
+        recently_changed_direction = true;
         dir = (dir == LEFT) ? RIGHT : LEFT;
         sprite->set_action(dir == LEFT ? "left" : "right");
         physic.set_velocity_x(-physic.get_velocity_x());               
diff --git a/src/badguy/snail.hpp b/src/badguy/snail.hpp
index 35802b022..3f56e227d 100644
--- a/src/badguy/snail.hpp
+++ b/src/badguy/snail.hpp
@@ -57,6 +57,7 @@ private:
   Timer flat_timer; /**< wait time until flipping right-side-up again */
   Timer kicked_delay_timer; /**< wait time until switching from STATE_KICKED_DELAY to STATE_KICKED */
   int squishcount;
+  bool recently_changed_direction;
 };
 
 #endif