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trans.c
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trans.c
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/*****************************************************/
/* Ultimate Blocks */
/* Copyright (c) An Ly 2000, Owen Rudge 2001, 2008 */
/*****************************************************/
#include <allegro.h>
#include "blocks3.h"
#define OWEN_HIDE_TRANSITIONS 0
void my_fade_out(int speed);
void my_fade_in(AL_CONST PALETTE p, int speed);
void my_fade_from_range(AL_CONST PALETTE source, AL_CONST PALETTE dest, int speed, int from, int to);
void Transition_Out(BITMAP *pic, PALETTE pal)
{
#if OWEN_HIDE_TRANSITIONS
BITMAP *temp2 = create_bitmap(640, 480);
PALETTE rgb;
int i, j, k, l;
int x, y;
for (i = 2; i < 30; i+=2)
{
for (j = 0; j < 700; j += i)
for (k = 0; k < 500; k += i*479/640)
{
x = j + i;
y = k + i*480/640;
if (x > 640) x = 640;
if (y > 480) y = 480;
rectfill(screen, j, k, x, y, getpixel(pic, (j + x)/2, (k + y)/2));
}
for (l = 0; l < 255; l++)
{
rgb[l].r = pal[l].r*(30-i)/30;
rgb[l].g = pal[l].g*(30-i)/30;
rgb[l].b = pal[l].b*(30-i)/30;
}
set_palette(rgb);
while (time_count < 5);
time_count = 0;
/* blit(temp2, screen, 0, 0, 0, 0, 640, 480);*/
}
#else
blit(pic, screen, 0, 0, 0, 0, SCREEN_W, SCREEN_H);
my_fade_out(8);
#endif
}
void Transition_In(BITMAP *pic, PALETTE pal)
{
#if OWEN_HIDE_TRANSITIONS
BITMAP *temp2 = create_bitmap(640, 480);
palette rgb;
int i, j, k, l;
int x, y;
for (i = 0; i < 255; i++)
{
rgb[i].r = 0;
rgb[i].g = 0;
rgb[i].b = 0;
}
set_palette(rgb);
for (i = 30; i > 2; i-=2)
{
for (j = 0; j < 700; j += i)
for (k = 0; k < 500; k += i*479/640)
{
x = j + i;
y = k + i*480/640;
if (x > 640) x = 640;
if (y > 480) y = 480;
rectfill(screen, j, k, x, y, getpixel(pic, (j + x)/2, (k + y)/2));
}
for (l = 0; l < 255; l++)
{
rgb[l].r = pal[l].r*(30-i)/30;
rgb[l].g = pal[l].g*(30-i)/30;
rgb[l].b = pal[l].b*(30-i)/30;
}
set_palette(rgb);
/* while(!key[KEY_F1]);
while(key[KEY_F1]);*/
while (time_count < 5);
time_count = 0;
/* blit(temp2, screen, 0, 0, 0, 0, 640, 480);*/
}
set_palette(pal);
blit(pic, screen, 0, 0, 0, 0, 640, 480);
#else
set_palette(black_palette);
blit(pic, screen, 0, 0, 0, 0, SCREEN_W, SCREEN_H);
my_fade_in(pal, 8);
#endif
}
void my_fade_from_range(AL_CONST PALETTE source, AL_CONST PALETTE dest, int speed, int from, int to)
{
PALETTE temp;
int c, start, last;
ASSERT(speed > 0 && speed <= 64);
ASSERT(from >= 0 && from < PAL_SIZE);
ASSERT(to >= 0 && to < PAL_SIZE);
for (c=0; c<PAL_SIZE; c++)
temp[c] = source[c];
start = retrace_count;
last = -1;
while ((c = (retrace_count-start)*speed/2) < 64) {
if (c != last) {
fade_interpolate(source, dest, temp, c, from, to);
set_palette_range(temp, from, to, TRUE);
last = c;
Poll_Music();
}
}
set_palette_range(dest, from, to, TRUE);
}
/* fade_in:
* Fades from a solid black palette to p, at the specified speed (1 is
* the slowest, 64 is instantaneous).
*/
void my_fade_in(AL_CONST PALETTE p, int speed)
{
ASSERT(speed > 0 && speed <= 64);
my_fade_from_range(black_palette, p, speed, 0, PAL_SIZE-1);
}
/* fade_out:
* Fades from the current palette to a solid black palette, at the
* specified speed (1 is the slowest, 64 is instantaneous).
*/
void my_fade_out(int speed)
{
PALETTE temp;
ASSERT(speed > 0 && speed <= 64);
get_palette(temp);
my_fade_from_range(temp, black_palette, speed, 0, PAL_SIZE-1);
}