created a ghost forest demo from contrib art:

-modified background image
-ghost forest music
-new particle system featuring floating ghosts
see levels/test/raintest.stl
(someone please improve the artwork, i'll work on the music)

SVN-Revision: 2504

diff --git a/contrib/music/ghostforest2.mod b/contrib/music/ghostforest2.mod
deleted file mode 100644 (file)
index 4a06e44..0000000
Binary files a/contrib/music/ghostforest2.mod and /dev/null differ

diff --git a/data/images/background/ghostforest.jpg b/data/images/background/ghostforest.jpg
new file mode 100644 (file)
index 0000000..6b57331
Binary files /dev/null and b/data/images/background/ghostforest.jpg differ

diff --git a/data/images/objects/particles/ghost0.png b/data/images/objects/particles/ghost0.png
new file mode 100644 (file)
index 0000000..31a689a
Binary files /dev/null and b/data/images/objects/particles/ghost0.png differ

diff --git a/data/images/objects/particles/ghost1.png b/data/images/objects/particles/ghost1.png
new file mode 100644 (file)
index 0000000..c237d26
Binary files /dev/null and b/data/images/objects/particles/ghost1.png differ

diff --git a/data/levels/test/raintest.stl b/data/levels/test/raintest.stl
index 3d0c516..43b8890 100644 (file)
--- a/data/levels/test/raintest.stl
+++ b/data/levels/test/raintest.stl
@@ -1,11 +1,12 @@
 ;; Generated by Flexlay Editor
 (supertux-level
   (version 2)
-  (name   (_ "Rain Test"))
+  (name   (_ "Rain And Ghost Theme Test"))
   (author "SuperTux Team")
   (sector
     (name  "main")
     (gravity 10.000000)
+    (music "ghostforest2.mod")
     (tilemap
       (layer  "background")
       (solid #f)
@@ -13,35 +14,35 @@
       (width  100)
       (height 50)
       (tiles
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         0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
         0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
         0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
@@ -185,8 +186,15 @@
     )
 
        (background
-         (image "forest1.jpg")
-         (speed 1.000000)
+         (image "ghostforest.jpg")
+         (speed 0.5)
+       )
+       (background
+         (image "fog.png")
+        (speed 1.2)
+        (layer 400)
+       )
+       (particles-ghost
        )
        (particles-rain
        )

diff --git a/data/music/ghostforest2.mod b/data/music/ghostforest2.mod
new file mode 100644 (file)
index 0000000..4a06e44
Binary files /dev/null and b/data/music/ghostforest2.mod differ

diff --git a/src/object/particlesystem.cpp b/src/object/particlesystem.cpp
index e0500f8..929c2bd 100644 (file)
--- a/src/object/particlesystem.cpp
+++ b/src/object/particlesystem.cpp
@@ -129,6 +129,63 @@ void SnowParticleSystem::update(float elapsed_time)
     }
 }
 
+GhostParticleSystem::GhostParticleSystem()
+{
+    ghosts[0] = new Surface(datadir+"/images/objects/particles/ghost0.png", true);
+    ghosts[1] = new Surface(datadir+"/images/objects/particles/ghost1.png", true);
+
+    virtual_width = SCREEN_WIDTH * 2;
+
+    // create some random snowflakes
+    size_t ghostcount = 2;
+    for(size_t i=0; i<ghostcount; ++i) {
+        GhostParticle* particle = new GhostParticle;
+        particle->pos.x = rand() % int(virtual_width);
+        particle->pos.y = rand() % SCREEN_HEIGHT;
+        int size = rand() % 2;
+        particle->texture = ghosts[size];
+        do {
+            particle->speed = size*.2 + (float(rand()%10)*.4);
+        } while(particle->speed < 1);
+        particle->speed *= 50;
+        particles.push_back(particle);
+    }
+}
+
+void
+GhostParticleSystem::parse(const lisp::Lisp& reader)
+{
+  reader.get("layer", layer);
+}
+
+void
+GhostParticleSystem::write(lisp::Writer& writer)
+{
+  writer.start_list("particles-ghost");
+  writer.write_int("layer", layer);
+  writer.end_list("particles-ghost");
+}
+
+GhostParticleSystem::~GhostParticleSystem()
+{
+  for(int i=0;i<2;++i)
+    delete ghosts[i];
+}
+
+void GhostParticleSystem::update(float elapsed_time)
+{
+    std::vector<Particle*>::iterator i;
+    for(i = particles.begin(); i != particles.end(); ++i) {
+        GhostParticle* particle = (GhostParticle*) *i;
+        particle->pos.y -= particle->speed * elapsed_time;
+        particle->pos.x -= particle->speed * elapsed_time;
+        if(particle->pos.y > SCREEN_HEIGHT) {
+            particle->pos.y = fmodf(particle->pos.y , virtual_height);
+            particle->pos.x = rand() % int(virtual_width);
+        }
+    }
+}
+
 CloudParticleSystem::CloudParticleSystem()
 {
     cloudimage = new Surface(datadir + "/images/objects/particles/cloud.png", true);

diff --git a/src/object/particlesystem.h b/src/object/particlesystem.h
index 05dd9f3..ac76ded 100644 (file)
--- a/src/object/particlesystem.h
+++ b/src/object/particlesystem.h
@@ -97,6 +97,30 @@ private:
     Surface* snowimages[3];
 };
 
+class GhostParticleSystem : public ParticleSystem, public Serializable
+{
+public:
+    GhostParticleSystem();
+    virtual ~GhostParticleSystem();
+
+    void parse(const lisp::Lisp& lisp);
+    void write(lisp::Writer& writer);
+
+    virtual void update(float elapsed_time);
+
+    std::string type() const
+    { return "GhostParticleSystem"; }
+    
+private:
+    class GhostParticle : public Particle
+    {
+    public:
+        float speed;
+    };
+    
+    Surface* ghosts[2];
+};
+
 class CloudParticleSystem : public ParticleSystem, public Serializable
 {
 public:

diff --git a/src/sector.cpp b/src/sector.cpp
index 69bac35..43743c7 100644 (file)
--- a/src/sector.cpp
+++ b/src/sector.cpp
@@ -114,6 +114,10 @@ Sector::parse_object(const std::string& name, const lisp::Lisp& reader)
     RainParticleSystem* partsys = new RainParticleSystem();
     partsys->parse(reader);
     return partsys;
+  } else if(name == "particles-ghost") {
+    GhostParticleSystem* partsys = new GhostParticleSystem();
+    partsys->parse(reader);
+    return partsys;
   } else if(name == "particles-clouds") {
     CloudParticleSystem* partsys = new CloudParticleSystem();
     partsys->parse(reader);