* Implemented StayOnPlatform on badguys where useful

[supertux.git] / src / badguy / poisonivy.cpp

diff --git a/src/badguy/poisonivy.cpp b/src/badguy/poisonivy.cpp
index cad1a64..c93f42e 100644 (file)
--- a/src/badguy/poisonivy.cpp
+++ b/src/badguy/poisonivy.cpp
@@ -27,15 +27,18 @@ PoisonIvy::PoisonIvy(const lisp::Lisp& reader)
 {
   reader.get("x", start_position.x);
   reader.get("y", start_position.y);
+  stay_on_platform = false;
+  reader.get("stay-on-platform", stay_on_platform);
   bbox.set_size(31.8, 31.8);
   sprite = sprite_manager->create("images/creatures/poison_ivy/poison_ivy.sprite");
   set_direction = false;
 }
 
-PoisonIvy::PoisonIvy(float pos_x, float pos_y, Direction d)
+PoisonIvy::PoisonIvy(float pos_x, float pos_y, Direction d, bool stay_on_plat = false)
 {
   start_position.x = pos_x;
   start_position.y = pos_y;
+  stay_on_platform = stay_on_plat;
   bbox.set_size(31.8, 31.8);
   sprite = sprite_manager->create("images/creatures/poison_ivy/poison_ivy.sprite");
   set_direction = true;
@@ -49,6 +52,7 @@ PoisonIvy::write(lisp::Writer& writer)
 
   writer.write_float("x", start_position.x);
   writer.write_float("y", start_position.y);
+  if (stay_on_platform) writer.write_bool("stay-on-platform", true);
 
   writer.end_list("poisonivy");
 }
@@ -61,6 +65,17 @@ PoisonIvy::activate()
   sprite->set_action(dir == LEFT ? "left" : "right");
 }
 
+void
+PoisonIvy::active_update(float elapsed_time)
+{
+  if (stay_on_platform && may_fall_off_platform())
+  {
+    dir = (dir == LEFT ? RIGHT : LEFT);
+    sprite->set_action(dir == LEFT ? "left" : "right");
+    physic.set_velocity_x(-physic.get_velocity_x());
+  }
+}
+
 bool
 PoisonIvy::collision_squished(Player& player)
 {