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Copy pathSurface.cpp
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853 lines (755 loc) · 19.1 KB
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/*
* Copyright 2010-2013 OpenXcom Developers.
*
* This file is part of OpenXcom.
*
* OpenXcom 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.
*
* OpenXcom 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 OpenXcom. If not, see <http://www.gnu.org/licenses/>.
*/
#include "Surface.h"
#include "Screen.h"
#include "ShaderDraw.h"
#include <fstream>
#include <SDL_gfxPrimitives.h>
#include <SDL_image.h>
#include <SDL_endian.h>
#include "Palette.h"
#include "Exception.h"
#include "ShaderMove.h"
#include <stdlib.h>
#ifdef _WIN32
#include <malloc.h>
#endif
#if defined(__MINGW32__) && !defined(__MINGW64_VERSION_MAJOR)
#define _aligned_malloc __mingw_aligned_malloc
#define _aligned_free __mingw_aligned_free
#endif //MINGW
#include "Language.h"
namespace OpenXcom
{
/**
* Sets up a blank 8bpp surface with the specified size and position,
* with pure black as the transparent color.
* @note Surfaces don't have to fill the whole size since their
* background is transparent, specially subclasses with their own
* drawing logic, so it just covers the maximum drawing area.
* @param width Width in pixels.
* @param height Height in pixels.
* @param x X position in pixels.
* @param y Y position in pixels.
* @param bpp Bits-per-pixel depth.
*/
#ifdef __MORPHOS__
#include <ppcinline/exec.h>
#endif
Surface::Surface(int width, int height, int x, int y, int bpp) : _x(x), _y(y), _visible(true), _hidden(false), _redraw(false), _originalColors(0), _misalignedPixelBuffer(0), _alignedBuffer(0)
{
//_surface = SDL_CreateRGBSurface(SDL_SWSURFACE, width, height, 8, 0, 0, 0, 0);
int pitch = (bpp/8) * ((width+15)& ~0xF);
#ifndef _WIN32
#ifdef __MORPHOS__
_alignedBuffer = calloc( pitch * height * (bpp/8), 1 );
if (!_alignedBuffer)
{
throw Exception("Where's the memory, Lebowski?");
}
#else
int rc;
if ((rc = posix_memalign(&_alignedBuffer, 16, pitch * height * (bpp/8))))
{
throw Exception(strerror(rc));
}
#endif
#else
// of course Windows has to be difficult about this!
_alignedBuffer = _aligned_malloc(pitch*height*(bpp/8), 16);
if (!_alignedBuffer)
{
throw Exception("Where's the memory, Lebowski?");
}
#endif
memset(_alignedBuffer, 0, pitch * height * (bpp/8));
_surface = SDL_CreateRGBSurfaceFrom(_alignedBuffer,width, height, bpp, pitch, 0, 0, 0, 0);
if (_surface == 0)
{
throw Exception(SDL_GetError());
}
SDL_SetColorKey(_surface, SDL_SRCCOLORKEY, 0);
_crop.w = 0;
_crop.h = 0;
_crop.x = 0;
_crop.y = 0;
_dx = Screen::getDX();
_dy = Screen::getDY();
}
/**
* Performs a deep copy of an existing surface.
* @param other Surface to copy from.
*/
Surface::Surface(const Surface& other)
{
_surface = SDL_ConvertSurface(other._surface, other._surface->format, other._surface->flags);
_x = other._x;
_y = other._y;
_crop.w = other._crop.w;
_crop.h = other._crop.h;
_crop.x = other._crop.x;
_crop.y = other._crop.y;
_visible = other._visible;
_hidden = other._hidden;
_redraw = other._redraw;
_originalColors = other._originalColors;
_misalignedPixelBuffer = 0;
_alignedBuffer = 0;
}
/**
* Deletes the surface from memory.
*/
Surface::~Surface()
{
//if (_misalignedPixelBuffer) _surface->pixels = _misalignedPixelBuffer;
#ifdef _WIN32
if (_alignedBuffer) _aligned_free(_alignedBuffer);
#else
if (_alignedBuffer) free(_alignedBuffer);
#endif
SDL_FreeSurface(_surface);
}
/**
* Loads the contents of an X-Com SCR image file into
* the surface. SCR files are simply uncompressed images
* containing the palette offset of each pixel.
* @param filename Filename of the SCR image.
* @sa http://www.ufopaedia.org/index.php?title=Image_Formats#SCR_.26_DAT
*/
void Surface::loadScr(const std::string &filename)
{
// Load file and put pixels in surface
std::ifstream imgFile (filename.c_str(), std::ios::in | std::ios::binary);
if (!imgFile)
{
throw Exception(filename + " not found");
}
// Lock the surface
lock();
Uint8 value;
int x = 0, y = 0;
while (imgFile.read((char*)&value, 1))
{
setPixelIterative(&x, &y, value);
}
if (!imgFile.eof())
{
throw Exception("Invalid SCR file");
}
// Unlock the surface
unlock();
imgFile.close();
}
/**
* Loads the contents of an image file of a
* known format into the surface.
* @param filename Filename of the image.
*/
void Surface::loadImage(const std::string &filename)
{
// Destroy current surface (will be replaced)
#ifdef _WIN32
if (_alignedBuffer) _aligned_free(_alignedBuffer);
#else
if (_alignedBuffer) free(_alignedBuffer);
#endif
_alignedBuffer = 0;
SDL_FreeSurface(_surface);
_surface = 0;
_misalignedPixelBuffer = 0;
// SDL only takes UTF-8 filenames
// so here's an ugly hack to match this ugly reasoning
std::wstring wstr = Language::cpToWstr(filename);
std::string utf8 = Language::wstrToUtf8(wstr);
// Load file
_surface = IMG_Load(utf8.c_str());
if (!_surface)
{
throw Exception(IMG_GetError());
}
}
/**
* Loads the contents of an X-Com SPK image file into
* the surface. SPK files are compressed with a custom
* algorithm since they're usually full-screen images.
* @param filename Filename of the SPK image.
* @sa http://www.ufopaedia.org/index.php?title=Image_Formats#SPK
*/
void Surface::loadSpk(const std::string &filename)
{
// Load file and put pixels in surface
std::ifstream imgFile (filename.c_str(), std::ios::in | std::ios::binary);
if (!imgFile)
{
throw Exception(filename + " not found");
}
// Lock the surface
lock();
Uint16 flag;
Uint8 value;
int x = 0, y = 0;
while (imgFile.read((char*)&flag, sizeof(flag)))
{
#if SDL_BYTEORDER == SDL_BIG_ENDIAN
flag = SDL_Swap16( flag );
#endif
if (flag == 65535)
{
imgFile.read((char*)&flag, sizeof(flag));
#if SDL_BYTEORDER == SDL_BIG_ENDIAN
flag = SDL_Swap16( flag );
#endif
for (int i = 0; i < flag * 2; ++i)
{
setPixelIterative(&x, &y, 0);
}
}
else if (flag == 65534)
{
imgFile.read((char*)&flag, sizeof(flag));
#if SDL_BYTEORDER == SDL_BIG_ENDIAN
flag = SDL_Swap16( flag );
#endif
for (int i = 0; i < flag * 2; ++i)
{
imgFile.read((char*)&value, 1);
setPixelIterative(&x, &y, value);
}
}
}
// Unlock the surface
unlock();
imgFile.close();
}
/**
* Loads the contents of a TFTD BDY image file into
* the surface. BDY files are compressed with a custom
* algorithm.
* @param filename Filename of the BDY image.
* @sa http://www.ufopaedia.org/index.php?title=Image_Formats#BDY
*/
void Surface::loadBdy(const std::string &filename)
{
// Load file and put pixels in surface
std::ifstream imgFile (filename.c_str(), std::ios::in | std::ios::binary);
if (!imgFile)
{
throw Exception(filename + " not found");
}
// Lock the surface
lock();
Uint8 dataByte;
int pixelCnt;
int x = 0, y = 0;
int currentRow = 0;
while (imgFile.read((char*)&dataByte, sizeof(dataByte)))
{
if (dataByte >= 129)
{
pixelCnt = 257 - (int)dataByte;
imgFile.read((char*)&dataByte, sizeof(dataByte));
currentRow = y;
for (int i = 0; i < pixelCnt; ++i)
{
if (currentRow == y) // avoid overscan into next row
setPixelIterative(&x, &y, dataByte);
}
}
else
{
pixelCnt = 1 + (int)dataByte;
currentRow = y;
for (int i = 0; i < pixelCnt; ++i)
{
imgFile.read((char*)&dataByte, sizeof(dataByte));
if (currentRow == y) // avoid overscan into next row
setPixelIterative(&x, &y, dataByte);
}
}
}
// Unlock the surface
unlock();
imgFile.close();
}
/**
* Clears the entire contents of the surface, resulting
* in a blank image.
*/
void Surface::clear()
{
SDL_Rect square;
square.x = 0;
square.y = 0;
square.w = getWidth();
square.h = getHeight();
if (_surface->flags & SDL_SWSURFACE) memset(_surface->pixels, 0, _surface->h*_surface->pitch);
else SDL_FillRect(_surface, &square, 0);
}
/**
* Shifts all the colors in the surface by a set amount.
* This is a common method in 8bpp games to simulate color
* effects for cheap.
* @param off Amount to shift.
* @param min Minimum color to shift to.
* @param max Maximum color to shift to.
* @param mul Shift multiplier.
*/
void Surface::offset(int off, int min, int max, int mul)
{
if (off == 0)
return;
// Lock the surface
lock();
for (int x = 0, y = 0; x < getWidth() && y < getHeight();)
{
Uint8 pixel = getPixel(x, y);
int p;
if (off > 0)
{
p = pixel * mul + off;
}
else
{
p = (pixel + off) / mul;
}
if (min != -1 && p < min)
{
p = min;
}
else if (max != -1 && p > max)
{
p = max;
}
if (pixel > 0)
{
setPixelIterative(&x, &y, p);
}
else
{
setPixelIterative(&x, &y, 0);
}
}
// Unlock the surface
unlock();
}
/**
* Inverts all the colors in the surface according to a middle point.
* Used for effects like shifting a button between pressed and unpressed.
* @param mid Middle point.
*/
void Surface::invert(Uint8 mid)
{
// Lock the surface
lock();
for (int x = 0, y = 0; x < getWidth() && y < getHeight();)
{
Uint8 pixel = getPixel(x, y);
if (pixel > 0)
{
setPixelIterative(&x, &y, pixel + 2 * ((int)mid - (int)pixel));
}
else
{
setPixelIterative(&x, &y, 0);
}
}
// Unlock the surface
unlock();
}
/**
* Runs any code the surface needs to keep updating every
* game cycle, like animations and other real-time elements.
*/
void Surface::think()
{
}
/**
* Draws the graphic that the surface contains before it
* gets blitted onto other surfaces. The surface is only
* redrawn if the flag is set by a property change, to
* avoid unecessary drawing.
*/
void Surface::draw()
{
_redraw = false;
clear();
}
/**
* Blits this surface onto another one, with its position
* relative to the top-left corner of the target surface.
* The cropping rectangle controls the portion of the surface
* that is blitted.
* @param surface Pointer to surface to blit onto.
*/
void Surface::blit(Surface *surface)
{
if (_visible && !_hidden)
{
if (_redraw)
draw();
SDL_Rect* cropper;
SDL_Rect target;
if (_crop.w == 0 && _crop.h == 0)
{
cropper = 0;
}
else
{
cropper = &_crop;
}
target.x = getX();
target.y = getY();
SDL_BlitSurface(_surface, cropper, surface->getSurface(), &target);
}
}
/**
* Copies the exact contents of another surface onto this one.
* Only the content that would overlap both surfaces is copied, in
* accordance with their positions. This is handy for applying
* effects over another surface without modifying the original.
* @param surface Pointer to surface to copy from.
*/
void Surface::copy(Surface *surface)
{
SDL_Rect from;
from.x = getX() - surface->getX();
from.y = getY() - surface->getY();
from.w = getWidth();
from.h = getHeight();
SDL_BlitSurface(surface->getSurface(), &from, _surface, 0);
}
/**
* Draws a filled rectangle on the surface.
* @param rect Pointer to Rect.
* @param color Color of the rectangle.
*/
void Surface::drawRect(SDL_Rect *rect, Uint8 color)
{
SDL_FillRect(_surface, rect, color);
}
/**
* Draws a line on the surface.
* @param x1 Start x coordinate in pixels.
* @param y1 Start y coordinate in pixels.
* @param x2 End x coordinate in pixels.
* @param y2 End y coordinate in pixels.
* @param color Color of the line.
*/
void Surface::drawLine(Sint16 x1, Sint16 y1, Sint16 x2, Sint16 y2, Uint8 color)
{
lineColor(_surface, x1, y1, x2, y2, Palette::getRGBA(getPalette(), color));
}
/**
* Draws a filled circle on the surface.
* @param x X coordinate in pixels.
* @param y Y coordinate in pixels.
* @param r Radius in pixels.
* @param color Color of the circle.
*/
void Surface::drawCircle(Sint16 x, Sint16 y, Sint16 r, Uint8 color)
{
filledCircleColor(_surface, x, y, r, Palette::getRGBA(getPalette(), color));
}
/**
* Draws a filled polygon on the surface.
* @param x Array of x coordinates.
* @param y Array of y coordinates.
* @param n Number of points.
* @param color Color of the polygon.
*/
void Surface::drawPolygon(Sint16 *x, Sint16 *y, int n, Uint8 color)
{
filledPolygonColor(_surface, x, y, n, Palette::getRGBA(getPalette(), color));
}
/**
* Draws a textured polygon on the surface.
* @param x Array of x coordinates.
* @param y Array of y coordinates.
* @param n Number of points.
* @param texture Texture for polygon.
* @param dx X offset of texture relative to the screen.
* @param dy Y offset of texture relative to the screen.
*/
void Surface::drawTexturedPolygon(Sint16 *x, Sint16 *y, int n, Surface *texture, int dx, int dy)
{
texturedPolygon(_surface, x, y, n, texture->getSurface(), dx, dy);
}
/**
* Draws a text string on the surface.
* @param x X coordinate in pixels.
* @param y Y coordinate in pixels.
* @param s Character string to draw.
* @param color Color of string.
*/
void Surface::drawString(Sint16 x, Sint16 y, const char *s, Uint8 color)
{
stringColor(_surface, x, y, s, Palette::getRGBA(getPalette(), color));
}
/**
* Changes the position of the surface in the X axis.
* @param x X position in pixels.
*/
void Surface::setX(int x)
{
_x = x;
}
/**
* Returns the position of the surface in the X axis.
* @return X position in pixels.
*/
int Surface::getX() const
{
return _x;
}
/**
* Changes the position of the surface in the Y axis.
* @param y Y position in pixels.
*/
void Surface::setY(int y)
{
_y = y;
}
/**
* Returns the position of the surface in the Y axis.
* @return Y position in pixels.
*/
int Surface::getY() const
{
return _y;
}
/**
* Changes the visibility of the surface. A hidden surface
* isn't blitted nor receives events.
* @param visible New visibility.
*/
void Surface::setVisible(bool visible)
{
_visible = visible;
}
/**
* Returns the visible state of the surface.
* @return Current visibility.
*/
bool Surface::getVisible() const
{
return _visible;
}
/**
* Resets the cropping rectangle set for this surface,
* so the whole surface is blitted.
*/
void Surface::resetCrop()
{
_crop.w = 0;
_crop.h = 0;
_crop.x = 0;
_crop.y = 0;
}
/**
* Returns the cropping rectangle for this surface.
* @return Pointer to the cropping rectangle.
*/
SDL_Rect *Surface::getCrop()
{
return &_crop;
}
/**
* Replaces a certain amount of colors in the surface's palette.
* @param colors Pointer to the set of colors.
* @param firstcolor Offset of the first color to replace.
* @param ncolors Amount of colors to replace.
*/
void Surface::setPalette(SDL_Color *colors, int firstcolor, int ncolors)
{
SDL_SetColors(_surface, colors, firstcolor, ncolors);
}
/**
* This is a separate visibility setting intended
* for temporary effects like window popups,
* so as to not override the default visibility setting.
* @note Do not confuse with setVisible!
* @param hidden Shown or hidden.
*/
void Surface::setHidden(bool hidden)
{
_hidden = hidden;
}
/**
* Locks the surface from outside access
* for pixel-level access. Must be unlocked
* afterwards.
* @sa unlock()
*/
void Surface::lock()
{
SDL_LockSurface(_surface);
}
/**
* Unlocks the surface after it's been locked
* to resume blitting operations.
* @sa lock()
*/
void Surface::unlock()
{
SDL_UnlockSurface(_surface);
}
/**
* Shifts all the colors in the surface's palette by a set amount.
* Optionally inverts the colors according to a middle point as well.
* This is a common method in 8bpp games to simulate color
* effects for cheap.
* @param off Amount to shift.
* @param mul Shift multiplier.
* @param mid Optional middle point used to invert palette. If 0, palette is not inverted
*/
void Surface::paletteShift(int off, int mul, int mid)
{
int ncolors = _surface->format->palette->ncolors;
// store the original palette
_originalColors = (SDL_Color *)malloc(sizeof(SDL_Color) * ncolors);
// create a temporary new palette
SDL_Color *newColors = (SDL_Color *)malloc(sizeof(SDL_Color) * ncolors);
// do the color shift - while storing the original colors too
for (int i = 0; i < ncolors; i++)
{
int inverseOffset = mid ? 2 * (mid - i) : 0;
int j = (i * mul + off + inverseOffset + ncolors) % ncolors;
_originalColors[i].r = getPalette()[i].r;
_originalColors[i].g = getPalette()[i].g;
_originalColors[i].b = getPalette()[i].b;
newColors[i].r = getPalette()[j].r;
newColors[i].g = getPalette()[j].g;
newColors[i].b = getPalette()[j].b;
}
// assign it and free it
SDL_SetColors(_surface, newColors, 0, ncolors);
free(newColors);
return;
}
/**
* Restores the previously shifted palette.
* You have to call it after you've done blitting.
*/
void Surface::paletteRestore()
{
if (_originalColors)
{
SDL_SetColors(_surface, _originalColors, 0, 256);
free(_originalColors);
_originalColors = 0;
}
}
/**
* help class used for Surface::blitNShade
*/
struct ColorReplace
{
/**
* Function used by ShaderDraw in Surface::blitNShade
* set shade and replace color in that surface
* @param dest destination pixel
* @param src source pixel
* @param shade value of shade of this surface
* @param newColor new color to set (it should be offseted by 4)
*/
static inline void func(Uint8& dest, const Uint8& src, const int& shade, const int& newColor, const int&)
{
if(src)
{
const int newShade = (src&15) + shade;
if (newShade > 15)
// so dark it would flip over to another color - make it black instead
dest = 15;
else
dest = newColor | newShade;
}
}
};
/**
* help class used for Surface::blitNShade
*/
struct StandartShade
{
/**
* Function used by ShaderDraw in Surface::blitNShade
* set shade
* @param dest destination pixel
* @param src source pixel
* @param shade value of shade of this surface
* @param notused
* @param notused
*/
static inline void func(Uint8& dest, const Uint8& src, const int& shade, const int&, const int&)
{
if(src)
{
const int newShade = (src&15) + shade;
if (newShade > 15)
// so dark it would flip over to another color - make it black instead
dest = 15;
else
dest = (src&(15<<4)) | newShade;
}
}
};
/**
* Specific blit function to blit battlescape terrain data in different shades in a fast way.
* Notice there is no surface locking here - you have to make sure you lock the surface yourself
* at the start of blitting and unlock it when done.
* @param surface to blit to
* @param x
* @param y
* @param off
* @param half some tiles are blitted only the right half
* @param newBaseColor Attention: the actual color + 1, because 0 is no new base color.
*/
void Surface::blitNShade(Surface *surface, int x, int y, int off, bool half, int newBaseColor)
{
ShaderMove<Uint8> src(this, x, y);
if(half)
{
GraphSubset g = src.getDomain();
g.beg_x = g.end_x/2;
src.setDomain(g);
}
if(newBaseColor)
{
--newBaseColor;
newBaseColor <<= 4;
ShaderDraw<ColorReplace>(ShaderSurface(surface), src, ShaderScalar(off), ShaderScalar(newBaseColor));
}
else
ShaderDraw<StandartShade>(ShaderSurface(surface), src, ShaderScalar(off));
}
/**
* Set the surface to be redrawn
*/
void Surface::invalidate()
{
_redraw = true;
}
void Surface::setDX(int dx)
{
_dx = dx;
}
void Surface::setDY(int dy)
{
_dy = dy;
}
}