slice_renderer.h

/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

#ifndef BLADERUNNER_SLICE_RENDERER_H
#define BLADERUNNER_SLICE_RENDERER_H

#include "bladerunner/color.h"
#include "bladerunner/vector.h"
#include "bladerunner/view.h"
#include "bladerunner/matrix.h"

#include "common/rect.h"

#include "graphics/surface.h"

namespace Common {
class MemoryReadStream;
}

namespace BladeRunner {

class ScreenEffects;
class BladeRunnerEngine;
class Lights;
class SetEffects;

class SliceRenderer {
    BladeRunnerEngine *_vm;

    int       _animation;
    int       _frame;
    Vector3   _position;
    float     _facing;
    float     _scale;

    ScreenEffects *_screenEffects;
    View          *_view;
    Lights        *_lights;
    SetEffects    *_setEffects;

    void *_sliceFramePtr;

    // Animation frame data
    Vector2 _frameScale;
    float   _frameBottomZ;
    Vector2 _framePos;
    float   _frameSliceHeight;
    uint32  _framePaletteIndex;
    uint32  _frameSliceCount;

    Matrix3x2    _mvpMatrix;
    Vector3      _startScreenVector;
    Vector3      _endScreenVector;
    float        _startSlice;
    float        _endSlice;
    Common::Rect _screenRectangle;

    int _m11lookup[256];
    int _m12lookup[256];
    int _m13;
    int _m21lookup[256];
    int _m22lookup[256];
    int _m23;

    bool _animationsShadowEnabled[997];

    Vector3 _shadowPolygonDefault[12];
    Vector3 _shadowPolygonCurrent[12];

    Color _setEffectColor;
    Color _lightsColor;

    Graphics::PixelFormat _pixelFormat;

public:
    SliceRenderer(BladeRunnerEngine *vm);
    ~SliceRenderer();

    void setScreenEffects(ScreenEffects *aesc);
    void setView(View *view);
    void setLights(Lights *lights);
    void setSetEffects(SetEffects *setEffects);

    void setupFrameInWorld(int animationId, int animationFrame, Vector3 position, float facing, float scale = 1.0f);
    void getScreenRectangle(Common::Rect *screenRectangle, int animationId, int animationFrame, Vector3 position, float facing, float scale);
    void drawInWorld(int animationId, int animationFrame, Vector3 position, float facing, float scale, Graphics::Surface &surface, uint16 *zbuffer);
    void drawOnScreen(int animationId, int animationFrame, int screenX, int screenY, float facing, float scale, Graphics::Surface &surface);

    void preload(int animationId);

    void disableShadows(int *animationsIdsList, int listSize);

private:
    void calculateBoundingRect();
    Matrix3x2 calculateFacingRotationMatrix();
    void loadFrame(int animation, int frame);

    void drawSlice(int slice, bool advanced, int y, Graphics::Surface &surface, uint16 *zbufferLine);
    void drawShadowInWorld(int transparency, Graphics::Surface &surface, uint16 *zbuffer);
    void drawShadowPolygon(int transparency, Graphics::Surface &surface, uint16 *zbuffer);
};

class SliceRendererLights {
    Lights *_lights;
    Color   _cacheColor[20];
    float   _cacheCounter[20];
    float   _cacheStart[20];
    int     _cacheRecalculation;

public:
    Color   _finalColor;

public:
    SliceRendererLights(Lights *lights);

    void calculateColorBase(Vector3 position1, Vector3 position2, float height);
    void calculateColorSlice(Vector3 position);
};

} // End of namespace BladeRunner

#endif