[Bf-blender-cvs] SVN commit: /data/svn/bf-blender [32414] trunk/blender/source/gameengine/ Ketsji: BGE object. life - gives you the life countdown for temporary objects.

[Dalai Felinto]

Revision: 32414
          http://projects.blender.org/plugins/scmsvn/viewcvs.php?view=rev&root=bf-blender&revision=32414
Author:   dfelinto
Date:     2010-10-11 12:47:20 +0200 (Mon, 11 Oct 2010)

Log Message:
-----------
BGE object.life - gives you the life countdown for temporary objects.
Whenever using AddObject actuator, this feature gives you control over morbid events (a.k.a. trigger events before the object ends).

Demo file here:  
http://blenderecia.orgfree.com/blender/tmp/cube_life.blend

Feature implemented as part of the BGE development workshop in BlenderPRO 2010 - Fortaleza, Brazil

Modified Paths:
--------------
    trunk/blender/source/gameengine/Ketsji/KX_GameObject.cpp
    trunk/blender/source/gameengine/Ketsji/KX_GameObject.h
    trunk/blender/source/gameengine/Ketsji/KX_Scene.cpp

Modified: trunk/blender/source/gameengine/Ketsji/KX_GameObject.cpp
===================================================================
--- trunk/blender/source/gameengine/Ketsji/KX_GameObject.cpp	2010-10-11 10:40:34 UTC (rev 32413)
+++ trunk/blender/source/gameengine/Ketsji/KX_GameObject.cpp	2010-10-11 10:47:20 UTC (rev 32414)
@@ -1496,6 +1496,7 @@
 PyAttributeDef KX_GameObject::Attributes[] = {
 	KX_PYATTRIBUTE_RO_FUNCTION("name",		KX_GameObject, pyattr_get_name),
 	KX_PYATTRIBUTE_RO_FUNCTION("parent",	KX_GameObject, pyattr_get_parent),
+	KX_PYATTRIBUTE_RO_FUNCTION("life",		KX_GameObject, pyattr_get_life),
 	KX_PYATTRIBUTE_RW_FUNCTION("mass",		KX_GameObject, pyattr_get_mass,		pyattr_set_mass),
 	KX_PYATTRIBUTE_RW_FUNCTION("linVelocityMin",		KX_GameObject, pyattr_get_lin_vel_min, pyattr_set_lin_vel_min),
 	KX_PYATTRIBUTE_RW_FUNCTION("linVelocityMax",		KX_GameObject, pyattr_get_lin_vel_max, pyattr_set_lin_vel_max),
@@ -1787,6 +1788,19 @@
 	Py_RETURN_NONE;
 }
 
+PyObject* KX_GameObject::pyattr_get_life(void *self_v, const KX_PYATTRIBUTE_DEF *attrdef)
+{
+	KX_GameObject* self= static_cast<KX_GameObject*>(self_v);
+
+	CValue *life = self->GetProperty("::timebomb");
+	if (life)
+		// this convert the timebomb seconds to frames, hard coded 50.0 (assuming 50fps)
+		// value hardcoded in KX_Scene::AddReplicaObject()
+		return PyFloat_FromDouble(life->GetNumber() * 50.0);
+	else
+		Py_RETURN_NONE;
+}
+
 PyObject* KX_GameObject::pyattr_get_mass(void *self_v, const KX_PYATTRIBUTE_DEF *attrdef)
 {
 	KX_GameObject* self= static_cast<KX_GameObject*>(self_v);

Modified: trunk/blender/source/gameengine/Ketsji/KX_GameObject.h
===================================================================
--- trunk/blender/source/gameengine/Ketsji/KX_GameObject.h	2010-10-11 10:40:34 UTC (rev 32413)
+++ trunk/blender/source/gameengine/Ketsji/KX_GameObject.h	2010-10-11 10:47:20 UTC (rev 32414)
@@ -856,6 +856,7 @@
 	static PyObject*	pyattr_get_name(void* self_v, const KX_PYATTRIBUTE_DEF *attrdef);
 	static PyObject*	pyattr_get_parent(void *self_v, const KX_PYATTRIBUTE_DEF *attrdef);
 
+	static PyObject*	pyattr_get_life(void *self_v, const KX_PYATTRIBUTE_DEF *attrdef);
 	static PyObject*	pyattr_get_mass(void *self_v, const KX_PYATTRIBUTE_DEF *attrdef);
 	static int			pyattr_set_mass(void *self_v, const KX_PYATTRIBUTE_DEF *attrdef, PyObject *value);
 	static PyObject*	pyattr_get_lin_vel_min(void *self_v, const KX_PYATTRIBUTE_DEF *attrdef);

Modified: trunk/blender/source/gameengine/Ketsji/KX_Scene.cpp
===================================================================
--- trunk/blender/source/gameengine/Ketsji/KX_Scene.cpp	2010-10-11 10:40:34 UTC (rev 32413)
+++ trunk/blender/source/gameengine/Ketsji/KX_Scene.cpp	2010-10-11 10:47:20 UTC (rev 32414)
@@ -812,6 +812,8 @@
 		// add a timebomb to this object
 		// for now, convert between so called frames and realtime
 		m_tempObjectList->Add(replica->AddRef());
+		// this convert the life from frames to sort-of seconds, hard coded 0.02 that assumes we have 50 frames per second
+		// if you change this value, make sure you change it in KX_GameObject::pyattr_get_life property too
 		CValue *fval = new CFloatValue(lifespan*0.02);
 		replica->SetProperty("::timebomb",fval);
 		fval->Release();