5 files changed, 33 insertions, 3 deletions

diff --git a/src/model/asefile.h b/src/model/asefile.h
index dc1516b..c792a9d 100644
--- a/src/model/asefile.h
+++ b/src/model/asefile.h
@@ -86,7 +86,10 @@ private:
 
 	inline const std::string &name() const { return asefile_name; }
 
-	inline const bool is_open() const { return asefile_ifs.is_open(); }
+	inline bool is_open()
+	{
+		return asefile_ifs.is_open();
+	}
 
 	std::string		asefile_name;
 
diff --git a/src/model/mapfile.cc b/src/model/mapfile.cc
index 385f986..271af06 100644
--- a/src/model/mapfile.cc
+++ b/src/model/mapfile.cc
@@ -1031,6 +1031,7 @@ Model * MapFile::load(std::string const &name)
 			} else if (mapfile.got_key_int("spawnflags", u)) {
 				light->light_strobe = spawnflag_isset(u, 1);
 				light->light_entity = spawnflag_isset(u, 2);
+				light->light_engine = spawnflag_isset(u, 4);
 				
 			} else if (mapfile.got_key_float("light", light->light_radius)) {
 				light->light_radius *= LIGHTSCALE;
diff --git a/src/model/parts.cc b/src/model/parts.cc
index a4a2d1e..d4ff20b 100644
--- a/src/model/parts.cc
+++ b/src/model/parts.cc
@@ -21,6 +21,7 @@ Light::Light() :
 	light_offset = 0.0f;
 	light_time = 0.5f;
 	light_flare = 0;
+	light_engine = 0;
 	render_texture = 0;
 }
 
diff --git a/src/model/parts.h b/src/model/parts.h
index 8593147..3e5e74f 100644
--- a/src/model/parts.h
+++ b/src/model/parts.h
@@ -31,7 +31,7 @@ class Light
 public:
 	Light();
 	
-	Light(const math::Vector3f & location, const math::Color & color, bool strobe=false);
+	Light(const math::Vector3f & location, const math::Color & color, bool strobe=false, bool engine=false);
 	
 	~Light();
 	
@@ -86,6 +86,12 @@ public:
 	{
 		return light_flare;
 	}
+
+	/// true if this light has engine activation
+	inline const bool engine() const
+	{
+		return light_engine;
+	}
 	
 	/// render texture number
 	inline size_t texture() const
@@ -97,6 +103,7 @@ public:
 	math::Color		light_color;
 	bool			light_strobe;
 	bool			light_entity;
+	bool			light_engine;
 	float			light_radius;
 	float			light_frequency;
 	float			light_offset;
diff --git a/src/render/draw.cc b/src/render/draw.cc
index da8c8d3..150356c 100644
--- a/src/render/draw.cc
+++ b/src/render/draw.cc
@@ -904,6 +904,17 @@ void draw_pass_model_fx(float elapsed)
 			for (model::Model::Lights::iterator lit = entity->model()->lights().begin(); lit != entity->model()->lights().end(); lit++) {
 				light = (*lit);
 
+				// engine flares			
+				thrust = 1.0f;
+				if (light->engine() && ( entity->type() == core::Entity::Controlable)) {
+					core::EntityControlable *ec = static_cast<core::EntityControlable *>(entity);
+					if ((ec->state() == core::Entity::ImpulseInitiate) || (ec->state() == core::Entity::Impulse)) {
+						thrust = 1.0f;
+					} else {
+						thrust = ec->thrust();
+					}
+				}
+
 				// strobe frequency
 				t = 1.0f;
 				if (light->strobe())
@@ -919,12 +930,17 @@ void draw_pass_model_fx(float elapsed)
 						gl::begin(gl::Quads);
 					}
 
+					// default alpha is 0.8
+					a = 0.8f;
 					if (light->entity()) {
 						color.assign(entity->color());
+					} else if (light->engine()) {
+						color.assign(entity->model()->enginecolor());
+						a *= thrust;
 					} else {
 						color.assign(light->color());
 					}
-					color.a = 0.8;
+					color.a = a;
 					gl::color(color);
 					
 					glTexCoord2f(0,1);
@@ -995,6 +1011,8 @@ void draw_pass_model_fx(float elapsed)
 					
 					a = math::absf( dotproduct(flare_axis.forward(), Camera::axis().forward()));
 					if (a > 0.1f) {
+
+						// alpha decreases as the viewing angle increases
 						a = a - 0.1f;
 						if (flare->entity()) {
 							color.assign(entity->color());