Add support for floor item sprites

This commit adds a sprite hierarchy (Sprite->ImageSprite,AnimatedSprite,CompundSprite;
CompoundSprite,Actor->ActorSprite;ActorSprite->Being,FloorItem) to collect common
functionailty into new base classes which will make other Mantis tickets easier to do.
Also allows monsters to use particle effects.

Reviewed-by: Bertram

1 files changed, 4 insertions, 6 deletions

diff --git a/src/imageparticle.cpp b/src/imageparticle.cpp
index feb9548d..76c05d64 100644
--- a/src/imageparticle.cpp
+++ b/src/imageparticle.cpp
@@ -39,10 +39,10 @@ ImageParticle::~ImageParticle()
         mImage->decRef();
 }
 
-void ImageParticle::draw(Graphics *graphics, int offsetX, int offsetY) const
+bool ImageParticle::draw(Graphics *graphics, int offsetX, int offsetY) const
 {
     if (!mAlive || !mImage)
-        return;
+        return false;
 
     int screenX = (int) mPos.x + offsetX - mImage->getWidth() / 2;
     int screenY = (int) mPos.y - (int)mPos.z + offsetY - mImage->getHeight()/2;
@@ -52,9 +52,7 @@ void ImageParticle::draw(Graphics *graphics, int offsetX, int offsetY) const
             screenX > graphics->getWidth() ||
             screenY + mImage->getHeight() < 0 ||
             screenY > graphics->getHeight())
-    {
-        return;
-    }
+        return false;
 
     float alphafactor = mAlpha;
 
@@ -65,5 +63,5 @@ void ImageParticle::draw(Graphics *graphics, int offsetX, int offsetY) const
         alphafactor *= (float) mLifetimePast / (float) mFadeIn;
 
     mImage->setAlpha(alphafactor);
-    graphics->drawImage(mImage, screenX, screenY);
+    return graphics->drawImage(mImage, screenX, screenY);
 }