Implemented beginning of the animation engine.

svn-id: r42068

2 files changed, 114 insertions, 0 deletions

diff --git a/engines/draci/animation.cpp b/engines/draci/animation.cpp
index 0aa9c14b8a..c074deb867 100644
--- a/engines/draci/animation.cpp
+++ b/engines/draci/animation.cpp
@@ -23,7 +23,87 @@
  *
  */
 
+#include "draci/draci.h"
+#include "draci/animation.h"
+
 namespace Draci {
 
+void Animation::addAnimation(uint id, uint z) {
+	
+	AnimObj *obj = new AnimObj();
+	obj->_id = id;
+	obj->_z = z;
+	obj->_currentFrame = 0;
+
+	insertAnimation(*obj);
+}
+
+Common::List<AnimObj>::iterator Animation::getAnimation(uint id) {
+	
+	Common::List<AnimObj>::iterator it;
+
+	for (it = _animObjects.begin(); it != _animObjects.end(); ++it) {
+		if (it->_id == id) {
+			return it;
+		}
+	}
+
+	return _animObjects.end();
+}
+
+void Animation::insertAnimation(AnimObj &animObj) {
+	
+	Common::List<AnimObj>::iterator it;	
+
+	for (it = _animObjects.begin(); it != _animObjects.end(); ++it) {
+		if (animObj._z < it->_z) 
+			break;
+	}
+
+	_animObjects.insert(it, animObj);
+}
+
+void Animation::addFrame(uint id, Drawable *frame) {
+	
+	Common::List<AnimObj>::iterator it = getAnimation(id);
+
+	it->_frames.push_back(frame);	
+}
+
+void Animation::addOverlay(Drawable *overlay, uint z) {
+	AnimObj *obj = new AnimObj();
+	obj->_id = kOverlayImage;
+	obj->_z = z;
+	obj->_currentFrame = 0;
+	obj->_frames.push_back(overlay);
+
+	insertAnimation(*obj);
+}
+
+void Animation::drawScene(Surface *surf) {
+	
+	Common::List<AnimObj>::iterator it;
+
+	for (it = _animObjects.begin(); it != _animObjects.end(); ++it) {
+		if(it->_id == kOverlayImage) {			
+			it->_frames[it->_currentFrame]->draw(surf, false);
+		}
+		else {
+			it->_frames[it->_currentFrame]->draw(surf, true);
+		}
+	}
+}
+
+void Animation::deleteAnimation(uint id) {
+	
+	Common::List<AnimObj>::iterator it = getAnimation(id);
+
+	_animObjects.erase(it);
+}
+	
+void Animation::deleteAll() {
+	
+	_animObjects.clear();
 }
 
+}
diff --git a/engines/draci/animation.h b/engines/draci/animation.h
index 85973aea19..8f4cc8e324 100644
--- a/engines/draci/animation.h
+++ b/engines/draci/animation.h
@@ -26,8 +26,42 @@
 #ifndef DRACI_ANIMATION_H
 #define DRACI_ANIMATION_H
 
+#include "draci/sprite.h"
+
 namespace Draci {
 
+enum { kOverlayImage = -1 };
+
+class DraciEngine;
+
+struct AnimObj {
+	uint _id;	
+	uint _currentFrame;
+	uint _z;
+	Common::Array<Drawable*> _frames;
+};
+
+class Animation {
+
+public:
+	Animation(DraciEngine *vm) : _vm(vm) {};
+
+	void addAnimation(uint id, uint z = 0);
+	void addFrame(uint id, Drawable *frame);
+	void addOverlay(Drawable *overlay, uint z = 0);
+	void deleteAnimation(uint id);
+	void deleteAll();
+	void drawScene(Surface *surf);
+	Common::List<AnimObj>::iterator getAnimation(uint id);
+
+private:
+	
+	void insertAnimation(AnimObj &animObj);
+
+	DraciEngine *_vm;
+	Common::List<AnimObj> _animObjects;
+};
+
 }
 
 #endif // DRACI_ANIMATION_H