130 lines
3.3 KiB
C++
130 lines
3.3 KiB
C++
/*
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** scene.h
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**
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** This file is part of mkxp.
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**
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** Copyright (C) 2013 Jonas Kulla <Nyocurio@gmail.com>
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**
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** mkxp is free software: you can redistribute it and/or modify
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** it under the terms of the GNU General Public License as published by
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** the Free Software Foundation, either version 2 of the License, or
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** (at your option) any later version.
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**
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** mkxp is distributed in the hope that it will be useful,
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** but WITHOUT ANY WARRANTY; without even the implied warranty of
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** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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** GNU General Public License for more details.
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**
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** You should have received a copy of the GNU General Public License
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** along with mkxp. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef SCENE_H
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#define SCENE_H
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#include "util.h"
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#include "intrulist.h"
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#include "etc.h"
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#include "etc-internal.h"
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class SceneElement;
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class Viewport;
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class WindowVX;
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class Window;
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struct ScanRow;
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struct TilemapPrivate;
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class Scene
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{
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public:
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struct Geometry
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{
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int xOrigin, yOrigin;
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IntRect rect;
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};
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Scene();
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virtual ~Scene();
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virtual void composite();
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virtual void requestViewportRender(Vec4& /*color*/, Vec4& /*flash*/, Vec4& /*tone*/) {}
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const Geometry &getGeometry() const { return geometry; }
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protected:
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void insert(SceneElement &element);
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void insertAfter(SceneElement &element, SceneElement &after);
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void reinsert(SceneElement &element);
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/* Notify all elements that geometry has changed */
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void notifyGeometryChange();
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IntruList<SceneElement> elements;
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Geometry geometry;
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friend class SceneElement;
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friend class Window;
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friend class WindowVX;
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friend struct ZLayer;
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};
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class SceneElement
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{
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public:
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SceneElement(Scene &scene, int z = 0, bool isSprite = false);
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SceneElement(Scene &scene, int z, unsigned int cStamp);
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virtual ~SceneElement();
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void setScene(Scene &scene);
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DECL_ATTR_VIRT( Z, int )
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DECL_ATTR_VIRT( Visible, bool )
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protected:
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/* A bit about OpenGL state:
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*
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* If we're not inside the draw cycle (ie. the 'draw()'
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* handle), you're free to change any GL state through
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* gl-util, except for those in GLState which you should
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* push/pop as needed.
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*
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* If we're _drawing_, you should probably not touch most
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* things in GLState. For scissored rendering, use push with
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* setIntersect(), and then pop afterwards.
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* Blendmode you can push/pop as you like. Do NOT touch viewport.
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* Texture/Shader bindings you're free to modify without
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* cleanup (and therefore you should expect dirty state).
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* Do NOT touch the FBO::Draw binding. If you have to do work
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* immediately before drawing that touches this (such as flushing
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* Bitmaps), use the 'prepareDraw' signal in SharedState that
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* will fire immediately before each frame draw.
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*/
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virtual void draw() = 0;
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// FIXME: This should be a signal
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virtual void onGeometryChange(const Scene::Geometry &) {}
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/* Compares two elements in terms of their display priority;
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* elements with lower priority are drawn earlier */
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bool operator<(const SceneElement &o) const;
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void setSpriteY(int value);
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void unlink();
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IntruListLink<SceneElement> link;
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const unsigned int creationStamp;
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int z;
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bool visible;
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Scene *scene;
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friend class Scene;
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friend class Viewport;
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friend struct TilemapPrivate;
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private:
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int spriteY;
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const bool isSprite;
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};
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#endif // SCENE_H
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