From d6471bf0f398257cb379944323cf85e8115491a5 Mon Sep 17 00:00:00 2001
From: Stijn Buys <ingar@osirion.org>
Date: Sun, 13 Oct 2013 20:14:17 +0000
Subject: Axded explosion trigger for particle ejecotrs, fixed explosion
 particles for destroyed entities.

---
 src/render/draw.cc                 |  5 ++---
 src/render/particleejectorscript.h | 18 ++++++++++++++++++
 src/render/particlesystem.cc       |  7 +++++--
 src/render/particlesystem.h        |  4 ++--
 src/render/particlesystemscript.cc |  4 ++++
 src/render/renderext.cc            | 14 ++++++++++++--
 src/render/renderext.h             |  6 ++++++
 7 files changed, 49 insertions(+), 9 deletions(-)

diff --git a/src/render/draw.cc b/src/render/draw.cc
index 50d02a7..da0a063 100644
--- a/src/render/draw.cc
+++ b/src/render/draw.cc
@@ -1076,7 +1076,7 @@ void draw_pass_model_fx(float elapsed)
 
 	for (core::Zone::Content::iterator it = zone->content().begin(); it != zone->content().end(); it++) {
 		core::Entity *entity = (*it);
-
+	
 		if (entity->model() && ext_render(entity)->detailvisible()) {
 			
 			// draw lights and flares
@@ -1096,8 +1096,7 @@ void draw_pass_model_fx(float elapsed)
 				for (RenderExt::ParticleSystems::iterator it = ext_render(entity)->particles().begin(); it != ext_render(entity)->particles().end(); ++it) {
 					(*it)->draw(elapsed);
 				}
-			}
-
+			}		
 		}
 	}
 
diff --git a/src/render/particleejectorscript.h b/src/render/particleejectorscript.h
index ef2be4c..4a06a84 100644
--- a/src/render/particleejectorscript.h
+++ b/src/render/particleejectorscript.h
@@ -108,6 +108,14 @@ public:
 	{
 		return script_impulse;
 	}
+
+	/**
+	 * @brief true for a thrust impulse ejector
+	 * */
+	inline const bool explosion() const
+	{
+		return script_explosion;
+	}
 	
 	/**
 	 * @brief true if entity secondary color is to be applied to ejected particles
@@ -423,6 +431,14 @@ public:
 	{
 		script_impulse = use_impulse;
 	}
+
+	/**
+	 * @brief enable or disable explosion activated ejector
+	 * */
+	inline void set_explosion(const bool use_explosion)
+	{
+		script_explosion = use_explosion;
+	}
 	
 	/**
 	 * @brief ejector particles are drawn in entity coordinates
@@ -509,6 +525,8 @@ private:
 	bool		script_thrust;
 	/// impulse activated ejector
 	bool		script_impulse;
+	/// explosion activated ejector
+	bool		script_explosion;
 	/// ejector is attached to entity coordinates
 	bool		script_attached;
 	/// ejector particles and speed are scaled according to modelscale
diff --git a/src/render/particlesystem.cc b/src/render/particlesystem.cc
index 7cf8f2f..1e3f13b 100644
--- a/src/render/particlesystem.cc
+++ b/src/render/particlesystem.cc
@@ -158,7 +158,7 @@ void ParticleSystem::draw(const float seconds)
 		if (entity()) {
 			bool ejector_active = true;
 
-			if (ejector->impulse() || ejector->thrust()) {
+			if (ejector->impulse() || ejector->thrust() || ejector->explosion()) {
 					ejector_active = false;
 			}
 			
@@ -182,7 +182,10 @@ void ParticleSystem::draw(const float seconds)
 						break;
 						
 					default:
-						ejector_active = false;
+						// ejectors should be active to draw explosions
+						if (ejector->explosion()) {
+							ejector_active = true;
+						}
 						break;
 				}
 				
diff --git a/src/render/particlesystem.h b/src/render/particlesystem.h
index 05bbe7d..974806f 100644
--- a/src/render/particlesystem.h
+++ b/src/render/particlesystem.h
@@ -56,12 +56,12 @@ public:
 		return particlesystem_axis;
 	}
 	
-private:
 	inline Ejectors	 & ejectors()
 	{
 		return particlesystem_ejectors;
 	}
-	
+
+private:
 	float			particlesystem_modelscale;
 	math::Vector3f		particlesystem_location;
 	math::Axis		particlesystem_axis;
diff --git a/src/render/particlesystemscript.cc b/src/render/particlesystemscript.cc
index 03ce86e..4c1f62b 100644
--- a/src/render/particlesystemscript.cc
+++ b/src/render/particlesystemscript.cc
@@ -235,6 +235,10 @@ ParticleSystemScript *ParticleSystemScript::load(const std::string &label)
 						ejector->set_impulse(b);
 						continue;
 						
+					} else if (inifile.got_key_bool("explosion", b)) {
+						ejector->set_impulse(b);
+						continue;
+						
 					} else if (inifile.got_key_bool("entity", b)) {
 						ejector->set_entity(b);
 						continue;
diff --git a/src/render/renderext.cc b/src/render/renderext.cc
index 7ac5702..c66f036 100644
--- a/src/render/renderext.cc
+++ b/src/render/renderext.cc
@@ -168,17 +168,27 @@ void RenderExt::frame(float elapsed)
 			const ParticleSystemScript *script = ParticleSystemScript::load("explosion");
 			if (script) {
 				state_explosion = new ParticleSystem(script, entity(), 0);
+	
+				// forece all ejectors te explosion state
+				for (ParticleSystem::Ejectors::iterator it = state_explosion->ejectors().begin(); it != state_explosion->ejectors().end(); ++it) {		
+					ParticleEjector *ejector = (*it);
+					ejector->set_explosion(true);
+				}
+
 				state_particles.push_back(state_explosion);
 			}
 		}
 		
 	} else {
+
 		if (state_explosion) {
 			// remove explosion
-			for (ParticleSystems::iterator it = particles().begin(); state_explosion && (it != particles().end()); it++) {
+			for (ParticleSystems::iterator it = particles().begin(); state_explosion && (it != particles().end());) {
 				if ((*it) == state_explosion) {
-					particles().erase(it);
+					particles().erase(it++);
 					state_explosion = 0;
+				} else {
+					++it;
 				}
 			}
 		}
diff --git a/src/render/renderext.h b/src/render/renderext.h
index d140bbe..65fc5ed 100644
--- a/src/render/renderext.h
+++ b/src/render/renderext.h
@@ -69,7 +69,13 @@ public:
 		return state_particles;
 	}
 	
+		
+	inline ParticleSystem *explosion() {
+		return state_explosion;
+	}	
+	
 	virtual void frame(float elapsed);
+
 	
 private:
 	bool 			state_visible;
-- 
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