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/*
*
* sprite.cpp
*
* 19th March 2009: Created sprite.cpp from parts of event.cpp and player.cpp
* 26th July 2009: Created anim.cpp from parts of sprite.cpp
*
* Part of the OpenJazz project
*
*
* Copyright (c) 2005-2010 Alister Thomson
*
* OpenJazz is distributed under the terms of
* the GNU General Public License, version 2.0
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#include "video.h"
#include "sprite.h"
Sprite::Sprite () {
pixels = NULL;
return;
}
Sprite::~Sprite () {
if (pixels) SDL_FreeSurface(pixels);
return;
}
void Sprite::clearPixels () {
unsigned char data;
if (pixels) SDL_FreeSurface(pixels);
data = 0;
pixels = createSurface(&data, 1, 1);
SDL_SetColorKey(pixels, SDL_SRCCOLORKEY, 0);
return;
}
void Sprite::setPixels (unsigned char *data, int width, int height, unsigned char key) {
if (pixels) SDL_FreeSurface(pixels);
pixels = createSurface(data, width, height);
SDL_SetColorKey(pixels, SDL_SRCCOLORKEY, key);
return;
}
int Sprite::getWidth () {
return pixels->w;
}
int Sprite::getHeight() {
return pixels->h;
}
void Sprite::setPalette (SDL_Color *palette, int start, int amount) {
SDL_SetPalette(pixels, SDL_LOGPAL, palette + start, start, amount);
return;
}
void Sprite::flashPalette (int index) {
SDL_Color palette[256];
int count;
// Map the whole palette to one index
for (count = 0; count < 256; count++)
palette[count].r = palette[count].g = palette[count].b = index;
SDL_SetPalette(pixels, SDL_LOGPAL, palette, 0, 256);
return;
}
void Sprite::restorePalette () {
video.restoreSurfacePalette(pixels);
return;
}
void Sprite::draw (int x, int y) {
SDL_Rect dst;
dst.x = x + xOffset;
dst.y = y + yOffset;
SDL_BlitSurface(pixels, NULL, canvas, &dst);
return;
}
void Sprite::drawScaled (int x, int y, fixed scale) {
unsigned char* srcRow;
unsigned char* dstRow;
unsigned char pixel, key;
int width, height, fullWidth, fullHeight;
int dstX, dstY;
int srcX, srcY;
key = pixels->format->colorkey;
fullWidth = FTOI(pixels->w * scale);
if (x < -(fullWidth >> 1)) return; // Off-screen
if (x + (fullWidth >> 1) > canvasW) width = canvasW + (fullWidth >> 1) - x;
else width = fullWidth;
fullHeight = FTOI(pixels->h * scale);
if (y < -(fullHeight >> 1)) return; // Off-screen
if (y + (fullHeight >> 1) > canvasH) height = canvasH + (fullHeight >> 1) - y;
else height = fullHeight;
if (SDL_MUSTLOCK(canvas)) SDL_LockSurface(canvas);
if (y < (fullHeight >> 1)) {
srcY = (fullHeight >> 1) - y;
dstY = 0;
} else {
srcY = 0;
dstY = y - (fullHeight >> 1);
}
while (srcY < height) {
srcRow = ((unsigned char *)(pixels->pixels)) + (pixels->pitch * DIV(srcY, scale));
dstRow = ((unsigned char *)(canvas->pixels)) + (canvas->pitch * dstY);
if (x < (fullWidth >> 1)) {
srcX = (fullWidth >> 1) - x;
dstX = 0;
} else {
srcX = 0;
dstX = x - (fullWidth >> 1);
}
while (srcX < width) {
pixel = srcRow[DIV(srcX, scale)];
if (pixel != key) dstRow[dstX] = pixel;
srcX++;
dstX++;
}
srcY++;
dstY++;
}
if (SDL_MUSTLOCK(canvas)) SDL_UnlockSurface(canvas);
return;
}