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/* -*- C++ -*-
*
* ONScripter_effect_breakup.cpp
* - Emulation of Takashi Toyama's "breakup.dll" NScripter plugin effect
*
* Copyright (c) 2008-2012 "Uncle" Mion Sonozaki
*
* UncleMion@gmail.com
*
* Copyright (c) 2001-2012 Ogapee
*
* ogapee@aqua.dti2.ne.jp
*
* 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 2 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, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "ONScripter.h"
#define BREAKUP_CELLWIDTH 24
#define BREAKUP_CELLFORMS 16
#define BREAKUP_MAX_CELL_X ((screen_width + BREAKUP_CELLWIDTH - 1)/BREAKUP_CELLWIDTH)
#define BREAKUP_MAX_CELL_Y ((screen_height + BREAKUP_CELLWIDTH - 1)/BREAKUP_CELLWIDTH)
#define BREAKUP_MAX_CELLS (BREAKUP_MAX_CELL_X * BREAKUP_MAX_CELL_Y)
#define BREAKUP_DIRECTIONS 8
#define BREAKUP_MOVE_FRAMES 40
#define BREAKUP_STILL_STATE (BREAKUP_CELLFORMS - BREAKUP_CELLWIDTH/2)
#define BREAKUP_MODE_LOWER 1
#define BREAKUP_MODE_LEFT 2
#define BREAKUP_MODE_PILEUP 4
#define BREAKUP_MODE_JUMBLE 8
const int breakup_disp_x[BREAKUP_DIRECTIONS] = { -7,-7,-5,-4,-2,1,3,5 };
const int breakup_disp_y[BREAKUP_DIRECTIONS] = { 0, 2, 4, 6, 7,7,6,5 };
int n_cells, tot_frames, last_frame;
int breakup_mode;
SDL_Rect breakup_window; // window of _cells_, not pixels
void ONScripter::buildBreakupCellforms()
{
// build the 32x32 mask for each cellform
if (breakup_cellforms) return;
int w = BREAKUP_CELLWIDTH * BREAKUP_CELLFORMS;
int h = BREAKUP_CELLWIDTH;
breakup_cellforms = new bool[w*h];
for (int n=0, rad2=1; n<BREAKUP_CELLFORMS; n++, rad2=(n+1)*(n+1)) {
for (int x=0, xd=-BREAKUP_CELLWIDTH/2; x<BREAKUP_CELLWIDTH; x++, xd++) {
for (int y=0, yd=-BREAKUP_CELLWIDTH/2; y<BREAKUP_CELLWIDTH; y++, yd++) {
if (((xd * xd + xd + yd * yd + yd)*2 + 1) < 2*rad2)
breakup_cellforms[y*w + n*BREAKUP_CELLWIDTH + x] = true;
else
breakup_cellforms[y*w + n*BREAKUP_CELLWIDTH + x] = false;
}
}
}
}
void ONScripter::buildBreakupMask()
{
// build the cell area mask for the breakup effect
int w = BREAKUP_CELLWIDTH * BREAKUP_MAX_CELL_X;
int h = BREAKUP_CELLWIDTH * BREAKUP_MAX_CELL_Y;
if (! breakup_mask) {
breakup_mask = new bool[w*h];
}
SDL_LockSurface( effect_src_surface );
SDL_LockSurface( effect_dst_surface );
ONSBuf *buffer1 = (ONSBuf *)effect_src_surface->pixels;
ONSBuf *buffer2 = (ONSBuf *)effect_dst_surface->pixels;
SDL_PixelFormat *fmt = effect_dst_surface->format;
int surf_w = effect_src_surface->w;
int surf_h = effect_src_surface->h;
int x1=w, y1=-1, x2=0, y2=0;
for (int i=0; i<h; ++i) {
for (int j=0; j<w; ++j) {
if ((j >= surf_w) || (i >= surf_h)) {
breakup_mask[i*w+j] = false;
continue;
}
ONSBuf pix1 = buffer1[i*surf_w+j];
ONSBuf pix2 = buffer2[i*surf_w+j];
int pix1c = ((pix1 & fmt->Bmask) >> fmt->Bshift) << fmt->Bloss;
int pix2c = ((pix2 & fmt->Bmask) >> fmt->Bshift) << fmt->Bloss;
breakup_mask[i*w+j] = true;
if (abs(pix1c - pix2c) > 8) {
if (y1 < 0) y1 = i;
if (j < x1) x1 = j;
if (j > x2) x2 = j;
y2 = i;
continue;
}
pix1c = ((pix1 & fmt->Gmask) >> fmt->Gshift) << fmt->Gloss;
pix2c = ((pix2 & fmt->Gmask) >> fmt->Gshift) << fmt->Gloss;
if (abs(pix1c - pix2c) > 8) {
if (y1 < 0) y1 = i;
if (j < x1) x1 = j;
if (j > x2) x2 = j;
y2 = i;
continue;
}
pix1c = ((pix1 & fmt->Rmask) >> fmt->Rshift) << fmt->Rloss;
pix2c = ((pix2 & fmt->Rmask) >> fmt->Rshift) << fmt->Rloss;
if (abs(pix1c - pix2c) > 8) {
if (y1 < 0) y1 = i;
if (j < x1) x1 = j;
if (j > x2) x2 = j;
y2 = i;
continue;
}
pix1c = ((pix1 & fmt->Amask) >> fmt->Ashift) << fmt->Aloss;
pix2c = ((pix2 & fmt->Amask) >> fmt->Ashift) << fmt->Aloss;
if (abs(pix1c - pix2c) > 8) {
if (y1 < 0) y1 = i;
if (j < x1) x1 = j;
if (j > x2) x2 = j;
y2 = i;
continue;
}
breakup_mask[i*w+j] = false;
}
}
if (breakup_mode & BREAKUP_MODE_LEFT)
x1 = 0;
else
x2 = surf_w-1;
if (breakup_mode & BREAKUP_MODE_LOWER)
y2 = surf_h-1;
else
y1 = 0;
breakup_window.x = x1 / BREAKUP_CELLWIDTH;
breakup_window.y = y1 / BREAKUP_CELLWIDTH;
breakup_window.w = x2/BREAKUP_CELLWIDTH - breakup_window.x + 1;
breakup_window.h = y2/BREAKUP_CELLWIDTH - breakup_window.y + 1;
SDL_UnlockSurface( effect_dst_surface );
SDL_UnlockSurface( effect_src_surface );
}
void ONScripter::initBreakup( char *params )
{
while (*params != 0 && *params != '/') params++;
if (*params == '/') params++;
buildBreakupCellforms();
breakup_mode = 0;
if (params[0] == 'l')
breakup_mode |= BREAKUP_MODE_LOWER;
if (params[1] == 'l')
breakup_mode |= BREAKUP_MODE_LEFT;
if ((params[2] >= 'A') && (params[2] <= 'Z'))
breakup_mode |= BREAKUP_MODE_JUMBLE;
if ((params[2] == 'p') || (params[2] == 'P'))
breakup_mode |= BREAKUP_MODE_PILEUP;
if (!breakup_cells)
breakup_cells = new BreakupCell[BREAKUP_MAX_CELLS];
buildBreakupMask();
int n_cell_x = breakup_window.w;
int n_cell_y = breakup_window.h;
int n_cell_diags = n_cell_x + n_cell_y;
n_cells = n_cell_x * n_cell_y;
tot_frames = BREAKUP_MOVE_FRAMES + n_cell_diags + BREAKUP_CELLFORMS - BREAKUP_CELLWIDTH/2 + 1;
last_frame = 0;
int n = 0, dir = 1, i = 0, diag_n = 0;
for (i=0; i<n_cell_x; i++) {
int state = BREAKUP_MOVE_FRAMES + BREAKUP_STILL_STATE + diag_n;
if (breakup_mode & BREAKUP_MODE_PILEUP)
state = 0 - diag_n;
for (int j=i, k=0; (j>=0) && (k<n_cell_y); j--, k++) {
breakup_cells[n].cell_x = j + breakup_window.x;
breakup_cells[n].cell_y = k + breakup_window.y;
if (!(breakup_mode & BREAKUP_MODE_LEFT))
breakup_cells[n].cell_x = breakup_window.x + breakup_window.w - j - 1;
if (breakup_mode & BREAKUP_MODE_LOWER)
breakup_cells[n].cell_y = breakup_window.y + breakup_window.h - k - 1;
breakup_cells[n].dir = dir;
breakup_cells[n].state = state;
breakup_cells[n].radius = 0;
++dir &= (BREAKUP_DIRECTIONS-1);
++n;
}
++diag_n;
}
for (int i=1; i<n_cell_y; i++) {
int state = BREAKUP_MOVE_FRAMES + BREAKUP_STILL_STATE + diag_n;
if (breakup_mode & BREAKUP_MODE_PILEUP)
state = 0 - diag_n;
for (int j=n_cell_x-1, k=i; (k<n_cell_y) && (j>=0); j--, k++) {
breakup_cells[n].cell_x = j + breakup_window.x;
breakup_cells[n].cell_y = k + breakup_window.y;
if (!(breakup_mode & BREAKUP_MODE_LEFT))
breakup_cells[n].cell_x = breakup_window.x + n_cell_x - j - 1;
if (breakup_mode & BREAKUP_MODE_LOWER)
breakup_cells[n].cell_y = breakup_window.y + n_cell_y - k - 1;
breakup_cells[n].dir = dir;
breakup_cells[n].state = state;
breakup_cells[n].radius = 0;
++dir &= (BREAKUP_DIRECTIONS-1);
++n;
}
++diag_n;
}
}
void ONScripter::effectBreakup( char *params, int duration )
{
while (*params != 0 && *params != '/') params++;
if (*params == '/') params++;
int x_dir = -1;
int y_dir = -1;
int frame = tot_frames * effect_counter / duration;
int frame_diff = frame - last_frame;
if (frame_diff == 0)
return;
SDL_Surface *bg = effect_dst_surface;
SDL_Surface *chr = effect_src_surface;
last_frame += frame_diff;
frame_diff = -frame_diff;
if (breakup_mode & BREAKUP_MODE_PILEUP) {
bg = effect_src_surface;
chr = effect_dst_surface;
frame_diff = -frame_diff;
x_dir = -x_dir;
y_dir = -y_dir;
}
SDL_BlitSurface(bg, NULL, accumulation_surface, NULL);
SDL_Surface *dst = accumulation_surface;
if (breakup_mode & BREAKUP_MODE_JUMBLE) {
x_dir = -x_dir;
y_dir = -y_dir;
}
if (!(breakup_mode & BREAKUP_MODE_LEFT)) {
x_dir = -x_dir;
}
if (breakup_mode & BREAKUP_MODE_LOWER) {
y_dir = -y_dir;
}
SDL_LockSurface( chr );
SDL_LockSurface( dst );
ONSBuf *chr_buf = (ONSBuf *)chr->pixels;
ONSBuf *buffer = (ONSBuf *)dst->pixels;
bool *msk_buf = breakup_cellforms;
for (int n=0; n<n_cells; ++n) {
SDL_Rect rect = { breakup_cells[n].cell_x * BREAKUP_CELLWIDTH,
breakup_cells[n].cell_y * BREAKUP_CELLWIDTH,
BREAKUP_CELLWIDTH, BREAKUP_CELLWIDTH };
breakup_cells[n].state += frame_diff;
if (breakup_cells[n].state >= (BREAKUP_MOVE_FRAMES + BREAKUP_STILL_STATE)) {
for (int i=0; i<BREAKUP_CELLWIDTH; ++i) {
for (int j=0; j<BREAKUP_CELLWIDTH; ++j) {
int x = rect.x + j;
int y = rect.y + i;
if ((x < 0) || (x >= dst->w) || (x >= chr->w) ||
(y < 0) || (y >= dst->h) || (y >= chr->h))
continue;
if ( breakup_mask[y*BREAKUP_CELLWIDTH*BREAKUP_MAX_CELL_X + x] )
buffer[y*dst->w + x] = chr_buf[y*chr->w + x];
}
}
}
else if (breakup_cells[n].state >= BREAKUP_MOVE_FRAMES) {
breakup_cells[n].radius = breakup_cells[n].state - (BREAKUP_MOVE_FRAMES*3/4) + 1;
for (int i=0; i<BREAKUP_CELLWIDTH; i++) {
for (int j=0; j<BREAKUP_CELLWIDTH; j++) {
int x = rect.x + j;
int y = rect.y + i;
if ((x < 0) || (x >= dst->w) || (x >= chr->w) ||
(y < 0) || (y >= dst->h) || (y >= chr->h))
continue;
int msk_off = BREAKUP_CELLWIDTH*breakup_cells[n].radius;
if ( msk_buf[BREAKUP_CELLWIDTH * BREAKUP_CELLFORMS * i + msk_off + j] &&
breakup_mask[y*BREAKUP_CELLWIDTH*BREAKUP_MAX_CELL_X + x] )
buffer[y*dst->w + x] = chr_buf[y*chr->w + x];
}
}
}
else if (breakup_cells[n].state >= 0) {
int state = breakup_cells[n].state;
int disp_x = x_dir * breakup_disp_x[breakup_cells[n].dir] * (state-BREAKUP_MOVE_FRAMES);
int disp_y = y_dir * breakup_disp_y[breakup_cells[n].dir] * (BREAKUP_MOVE_FRAMES-state);
breakup_cells[n].radius = 0;
if (breakup_cells[n].state >= (BREAKUP_MOVE_FRAMES/2))
breakup_cells[n].radius = (breakup_cells[n].state/2) - (BREAKUP_MOVE_FRAMES/4) + 1;
for (int i=0; i<BREAKUP_CELLWIDTH; i++) {
for (int j=0; j<BREAKUP_CELLWIDTH; j++) {
int x = disp_x + rect.x + j;
int y = disp_y + rect.y + i;
if ((x < 0) || (x >= dst->w) ||
(y < 0) || (y >= dst->h))
continue;
if (((rect.x+j)<0) || ((rect.x+j) >= chr->w) ||
((rect.y+i)<0) || ((rect.y+i) >= chr->h))
continue;
int msk_off = BREAKUP_CELLWIDTH*breakup_cells[n].radius;
if ( msk_buf[BREAKUP_CELLWIDTH * BREAKUP_CELLFORMS * i + msk_off + j] &&
breakup_mask[(rect.y+i)*BREAKUP_CELLWIDTH*BREAKUP_MAX_CELL_X + rect.x + j] )
buffer[y*dst->w + x] =
chr_buf[(rect.y+i)*chr->w + rect.x + j];
}
}
}
}
SDL_UnlockSurface( accumulation_surface );
SDL_UnlockSurface( chr );
}
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