X-Git-Url: https://git.verplant.org/?a=blobdiff_plain;f=src%2Fobject%2Fpath_walker.cpp;h=0c8ae2599ee8fff40bca5ecbb7773bcfd66e4501;hb=a98f7cee9f6a2593c0e1f3442800f159bad410df;hp=07c2b5ada38d277c7e5d14d10acd54999f0ba28f;hpb=07ddaed2a657e4d2a3d038fed223fc5827159caf;p=supertux.git

diff --git a/src/object/path_walker.cpp b/src/object/path_walker.cpp
index 07c2b5ada..0c8ae2599 100644
--- a/src/object/path_walker.cpp
+++ b/src/object/path_walker.cpp
@@ -23,11 +23,10 @@
 #include <assert.h>
 #include "path_walker.hpp"
 
-PathWalker::PathWalker(const Path* path)
-  : path(path), current_node_nr(0), next_node_nr(0), node_time(0),
+PathWalker::PathWalker(const Path* path, bool running)
+  : path(path), running(running), current_node_nr(0), next_node_nr(0), stop_at_node_nr(running?-1:0), node_time(0),
     walking_speed(1.0)
 {
-  last_pos = path->nodes[0].position;
   node_mult = 1 / path->nodes[0].time;
   next_node_nr = path->nodes.size() > 1 ? 1 : 0;
 }
@@ -39,10 +38,12 @@ PathWalker::~PathWalker()
 Vector
 PathWalker::advance(float elapsed_time)
 {
+  if (!running) return path->nodes[current_node_nr].position;
+
   assert(elapsed_time >= 0);
 
   elapsed_time *= fabsf(walking_speed);
-  
+
   const Path::Node* current_node = & (path->nodes[current_node_nr]);
   while(node_time + elapsed_time * node_mult >= 1) {
     elapsed_time -= (1 - node_time) / node_mult;
@@ -61,23 +62,43 @@ PathWalker::advance(float elapsed_time)
       node_mult = 1 / path->nodes[next_node_nr].time;
     }
   }
-  
+
   const Path::Node* next_node = & (path->nodes[next_node_nr]);
   node_time += elapsed_time * node_mult;
- 
-  Vector new_pos = current_node->position + 
+
+  Vector new_pos = current_node->position +
     (next_node->position - current_node->position) * node_time;
-    
-  Vector result = new_pos - last_pos;
-  last_pos = new_pos;
-  
-  return result;
+
+  return new_pos;
+}
+
+void
+PathWalker::goto_node(int node_no)
+{
+  if (node_no == stop_at_node_nr) return;
+  running = true;
+  stop_at_node_nr = node_no;
 }
 
 void
+PathWalker::start_moving()
+{
+  running = true;
+  stop_at_node_nr = -1;
+}
+
+void
+PathWalker::stop_moving()
+{
+  stop_at_node_nr = next_node_nr;
+}
+
+
+void
 PathWalker::advance_node()
 {
   current_node_nr = next_node_nr;
+  if (static_cast<int>(current_node_nr) == stop_at_node_nr) running = false;
 
   if(next_node_nr + 1 < path->nodes.size()) {
     next_node_nr++;