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tuxpaint-pencil-sharpener/magic/src/foam.c
Bill Kendrick c855261af2 indent foam.c
2017-10-15 11:44:56 -07:00

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/*
foam.c
Foam Magic Tool Plugin
Tux Paint - A simple drawing program for children.
Copyright (c) 2002-2008 by Bill Kendrick and others; see AUTHORS.txt
bill@newbreedsoftware.com
http://www.tuxpaint.org/
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
(See COPYING.txt)
Last updated: July 8, 2008
$Id$
*/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include "tp_magic_api.h"
#include "SDL_image.h"
#include "SDL_mixer.h"
/* Our globals: */
static Mix_Chunk *foam_snd;
static Uint8 foam_r, foam_g, foam_b;
static int foam_mask_w, foam_mask_h;
static int *foam_mask, *foam_mask_tmp;
static SDL_Surface *foam_7, *foam_5, *foam_3, *foam_1;
Uint32 foam_api_version(void);
int foam_init(magic_api * api);
char *foam_get_description(magic_api * api, int which, int mode);
void foam_release(magic_api * api, int which,
SDL_Surface * canvas, SDL_Surface * last, int x, int y, SDL_Rect * update_rect);
void foam_drag(magic_api * api, int which, SDL_Surface * canvas,
SDL_Surface * last, int ox, int oy, int x, int y, SDL_Rect * update_rect);
void foam_click(magic_api * api, int which, int mode,
SDL_Surface * canvas, SDL_Surface * last, int x, int y, SDL_Rect * update_rect);
SDL_Surface *foam_get_icon(magic_api * api, int which);
char *foam_get_name(magic_api * api ATTRIBUTE_UNUSED, int which ATTRIBUTE_UNUSED);
void foam_switchin(magic_api * api, int which, int mode, SDL_Surface * canvas);
void foam_switchout(magic_api * api, int which, int mode, SDL_Surface * canvas);
void foam_set_color(magic_api * api, Uint8 r, Uint8 g, Uint8 b);
void foam_shutdown(magic_api * api);
int foam_get_tool_count(magic_api * api);
int foam_modes(magic_api * api, int which);
int foam_requires_colors(magic_api * api, int which);
#define FOAM_PROP 8
#define FOAM_RADIUS 3
Uint32 foam_api_version(void)
{
return (TP_MAGIC_API_VERSION);
}
// No setup required:
int foam_init(magic_api * api)
{
char fname[1024];
SDL_Surface *foam_data;
snprintf(fname, sizeof(fname), "%s/sounds/magic/foam.ogg", api->data_directory);
foam_snd = Mix_LoadWAV(fname);
snprintf(fname, sizeof(fname), "%s/images/magic/foam_data.png", api->data_directory);
foam_data = IMG_Load(fname);
foam_7 = api->scale(foam_data, ((api->canvas_w / FOAM_PROP) * 4) / 4, ((api->canvas_h / FOAM_PROP) * 4) / 4, 0);
foam_5 = api->scale(foam_data, ((api->canvas_w / FOAM_PROP) * 3) / 4, ((api->canvas_h / FOAM_PROP) * 3) / 4, 0);
foam_3 = api->scale(foam_data, ((api->canvas_w / FOAM_PROP) * 2) / 4, ((api->canvas_h / FOAM_PROP) * 2) / 4, 0);
foam_1 = api->scale(foam_data, ((api->canvas_w / FOAM_PROP) * 1) / 4, ((api->canvas_h / FOAM_PROP) * 1) / 4, 0);
SDL_FreeSurface(foam_data);
return (1);
}
// We have multiple tools:
int foam_get_tool_count(magic_api * api ATTRIBUTE_UNUSED)
{
return (1);
}
// Load our icons:
SDL_Surface *foam_get_icon(magic_api * api, int which ATTRIBUTE_UNUSED)
{
char fname[1024];
snprintf(fname, sizeof(fname), "%s/images/magic/foam.png", api->data_directory);
return (IMG_Load(fname));
}
// Return our names, localized:
char *foam_get_name(magic_api * api ATTRIBUTE_UNUSED, int which ATTRIBUTE_UNUSED)
{
return (strdup(gettext_noop("Foam")));
}
// Return our descriptions, localized:
char *foam_get_description(magic_api * api ATTRIBUTE_UNUSED, int which ATTRIBUTE_UNUSED, int mode ATTRIBUTE_UNUSED)
{
return (strdup(gettext_noop("Click and drag the mouse to cover an area with foamy bubbles.")));
}
// Do the effect:
static void do_foam(void *ptr, int which ATTRIBUTE_UNUSED, SDL_Surface * canvas ATTRIBUTE_UNUSED,
SDL_Surface * last ATTRIBUTE_UNUSED, int x, int y)
{
magic_api *api = (magic_api *) ptr;
int xx, yy, nx, ny;
/* SDL_Rect dest; */
for (yy = -FOAM_RADIUS; yy < FOAM_RADIUS; yy++)
{
for (xx = -FOAM_RADIUS; xx < FOAM_RADIUS; xx++)
{
if (api->in_circle(xx, yy, FOAM_RADIUS))
{
nx = (x / FOAM_PROP) + xx;
ny = (y / FOAM_PROP) + yy;
if (nx >= 0 && ny >= 0 && nx < foam_mask_w && ny < foam_mask_h)
{
foam_mask[ny * foam_mask_w + nx] = 1;
}
}
}
}
}
// Affect the canvas on drag:
void foam_drag(magic_api * api, int which, SDL_Surface * canvas,
SDL_Surface * last, int ox, int oy, int x, int y, SDL_Rect * update_rect)
{
api->line((void *)api, which, canvas, last, ox, oy, x, y, 1, do_foam);
foam_release(api, which, canvas, last, x, y, update_rect);
/* FIXME */
if (ox > x)
{
int tmp = ox;
ox = x;
x = tmp;
}
if (oy > y)
{
int tmp = oy;
oy = y;
y = tmp;
}
update_rect->x = 0;
update_rect->y = 0;
update_rect->w = canvas->w;
update_rect->h = canvas->h;
api->playsound(foam_snd, (x * 255) / canvas->w, 255);
}
// Affect the canvas on click:
void foam_click(magic_api * api ATTRIBUTE_UNUSED, int which ATTRIBUTE_UNUSED, int mode ATTRIBUTE_UNUSED,
SDL_Surface * canvas, SDL_Surface * last,
int x ATTRIBUTE_UNUSED, int y ATTRIBUTE_UNUSED, SDL_Rect * update_rect)
{
int i;
if (foam_mask == NULL)
{
foam_mask_w = canvas->w / FOAM_PROP;
foam_mask_h = canvas->h / FOAM_PROP;
foam_mask = (int *)malloc(sizeof(int) * (foam_mask_w * foam_mask_h));
foam_mask_tmp = (int *)malloc(sizeof(int) * (foam_mask_w * foam_mask_h));
}
for (i = 0; i < foam_mask_w * foam_mask_h; i++)
foam_mask[i] = 0;
foam_drag(api, which, canvas, last, x, y, x, y, update_rect);
}
static int foam_mask_test(int r, int x, int y)
{
int xx, yy;
int tot, bub_r;
tot = 0;
for (yy = 0; yy < r; yy++)
{
for (xx = 0; xx < r; xx++)
{
if (x + xx < foam_mask_w && y + yy < foam_mask_h)
{
bub_r = foam_mask[((y + yy) * foam_mask_w) + (x + xx)];
tot = tot + bub_r;
}
}
}
return (tot);
}
// Affect the canvas on release:
void foam_release(magic_api * api ATTRIBUTE_UNUSED ATTRIBUTE_UNUSED, int which ATTRIBUTE_UNUSED,
SDL_Surface * canvas, SDL_Surface * last,
int x ATTRIBUTE_UNUSED, int y ATTRIBUTE_UNUSED, SDL_Rect * update_rect)
{
int xx, yy;
int changes, max_iters;
SDL_Rect dest;
int n;
SDL_Surface *img;
SDL_BlitSurface(last, NULL, canvas, NULL);
memcpy(foam_mask_tmp, foam_mask, (sizeof(int) * (foam_mask_w * foam_mask_h)));
max_iters = 2;
do
{
changes = 0;
max_iters--;
for (yy = 0; yy < foam_mask_h - 7; yy++)
{
for (xx = 0; xx < foam_mask_w - 7; xx++)
{
if (foam_mask_test(7, xx, yy) >= 40)
{
foam_mask[((yy + 0) * foam_mask_w) + (xx + 0)] = 7;
foam_mask[((yy + 0) * foam_mask_w) + (xx + 1)] = 0;
foam_mask[((yy + 0) * foam_mask_w) + (xx + 2)] = 1;
foam_mask[((yy + 0) * foam_mask_w) + (xx + 3)] = 0;
foam_mask[((yy + 0) * foam_mask_w) + (xx + 4)] = 1;
foam_mask[((yy + 0) * foam_mask_w) + (xx + 5)] = 2;
foam_mask[((yy + 0) * foam_mask_w) + (xx + 6)] = 0;
foam_mask[((yy + 1) * foam_mask_w) + (xx + 0)] = 0;
foam_mask[((yy + 1) * foam_mask_w) + (xx + 1)] = 1;
foam_mask[((yy + 1) * foam_mask_w) + (xx + 2)] = 0;
foam_mask[((yy + 1) * foam_mask_w) + (xx + 3)] = 0;
foam_mask[((yy + 1) * foam_mask_w) + (xx + 4)] = 0;
foam_mask[((yy + 1) * foam_mask_w) + (xx + 5)] = 2;
foam_mask[((yy + 1) * foam_mask_w) + (xx + 6)] = 0;
foam_mask[((yy + 2) * foam_mask_w) + (xx + 0)] = 1;
foam_mask[((yy + 2) * foam_mask_w) + (xx + 1)] = 0;
foam_mask[((yy + 2) * foam_mask_w) + (xx + 2)] = 0;
foam_mask[((yy + 2) * foam_mask_w) + (xx + 3)] = 0;
foam_mask[((yy + 2) * foam_mask_w) + (xx + 4)] = 0;
foam_mask[((yy + 2) * foam_mask_w) + (xx + 5)] = 0;
foam_mask[((yy + 2) * foam_mask_w) + (xx + 6)] = 1;
foam_mask[((yy + 3) * foam_mask_w) + (xx + 0)] = 0;
foam_mask[((yy + 3) * foam_mask_w) + (xx + 1)] = 1;
foam_mask[((yy + 3) * foam_mask_w) + (xx + 2)] = 0;
foam_mask[((yy + 3) * foam_mask_w) + (xx + 3)] = 0;
foam_mask[((yy + 3) * foam_mask_w) + (xx + 4)] = 0;
foam_mask[((yy + 3) * foam_mask_w) + (xx + 5)] = 0;
foam_mask[((yy + 3) * foam_mask_w) + (xx + 6)] = 0;
foam_mask[((yy + 4) * foam_mask_w) + (xx + 0)] = 1;
foam_mask[((yy + 4) * foam_mask_w) + (xx + 1)] = 0;
foam_mask[((yy + 4) * foam_mask_w) + (xx + 2)] = 0;
foam_mask[((yy + 4) * foam_mask_w) + (xx + 3)] = 0;
foam_mask[((yy + 4) * foam_mask_w) + (xx + 4)] = 0;
foam_mask[((yy + 4) * foam_mask_w) + (xx + 5)] = 0;
foam_mask[((yy + 4) * foam_mask_w) + (xx + 6)] = 1;
foam_mask[((yy + 5) * foam_mask_w) + (xx + 0)] = 2;
foam_mask[((yy + 5) * foam_mask_w) + (xx + 1)] = 0;
foam_mask[((yy + 5) * foam_mask_w) + (xx + 2)] = 0;
foam_mask[((yy + 5) * foam_mask_w) + (xx + 3)] = 7;
foam_mask[((yy + 5) * foam_mask_w) + (xx + 4)] = 0;
foam_mask[((yy + 5) * foam_mask_w) + (xx + 5)] = 3;
foam_mask[((yy + 5) * foam_mask_w) + (xx + 6)] = 0;
foam_mask[((yy + 6) * foam_mask_w) + (xx + 0)] = 0;
foam_mask[((yy + 6) * foam_mask_w) + (xx + 1)] = 0;
foam_mask[((yy + 6) * foam_mask_w) + (xx + 2)] = 1;
foam_mask[((yy + 6) * foam_mask_w) + (xx + 3)] = 0;
foam_mask[((yy + 6) * foam_mask_w) + (xx + 4)] = 1;
foam_mask[((yy + 6) * foam_mask_w) + (xx + 5)] = 0;
foam_mask[((yy + 6) * foam_mask_w) + (xx + 6)] = 2;
changes = 1;
}
else if (foam_mask_test(5, xx, yy) >= 30)
{
foam_mask[((yy + 0) * foam_mask_w) + (xx + 0)] = 2;
foam_mask[((yy + 0) * foam_mask_w) + (xx + 1)] = 1;
foam_mask[((yy + 0) * foam_mask_w) + (xx + 2)] = 0;
foam_mask[((yy + 0) * foam_mask_w) + (xx + 3)] = 1;
foam_mask[((yy + 0) * foam_mask_w) + (xx + 4)] = 2;
foam_mask[((yy + 1) * foam_mask_w) + (xx + 0)] = 1;
foam_mask[((yy + 1) * foam_mask_w) + (xx + 1)] = 0;
foam_mask[((yy + 1) * foam_mask_w) + (xx + 2)] = 0;
foam_mask[((yy + 1) * foam_mask_w) + (xx + 3)] = 0;
foam_mask[((yy + 1) * foam_mask_w) + (xx + 4)] = 1;
foam_mask[((yy + 2) * foam_mask_w) + (xx + 0)] = 0;
foam_mask[((yy + 2) * foam_mask_w) + (xx + 1)] = 0;
foam_mask[((yy + 2) * foam_mask_w) + (xx + 2)] = 5;
foam_mask[((yy + 2) * foam_mask_w) + (xx + 3)] = 0;
foam_mask[((yy + 2) * foam_mask_w) + (xx + 4)] = 0;
foam_mask[((yy + 3) * foam_mask_w) + (xx + 0)] = 2;
foam_mask[((yy + 3) * foam_mask_w) + (xx + 1)] = 0;
foam_mask[((yy + 3) * foam_mask_w) + (xx + 2)] = 1;
foam_mask[((yy + 3) * foam_mask_w) + (xx + 3)] = 2;
foam_mask[((yy + 3) * foam_mask_w) + (xx + 4)] = 0;
foam_mask[((yy + 4) * foam_mask_w) + (xx + 0)] = 0;
foam_mask[((yy + 4) * foam_mask_w) + (xx + 1)] = 1;
foam_mask[((yy + 4) * foam_mask_w) + (xx + 2)] = 0;
foam_mask[((yy + 4) * foam_mask_w) + (xx + 3)] = 1;
foam_mask[((yy + 4) * foam_mask_w) + (xx + 4)] = 0;
changes = 1;
}
else if (foam_mask_test(3, xx, yy) >= 8)
{
foam_mask[((yy + 0) * foam_mask_w) + (xx + 0)] = 1;
foam_mask[((yy + 0) * foam_mask_w) + (xx + 1)] = 0;
foam_mask[((yy + 0) * foam_mask_w) + (xx + 2)] = 1;
foam_mask[((yy + 1) * foam_mask_w) + (xx + 0)] = 0;
foam_mask[((yy + 1) * foam_mask_w) + (xx + 1)] = 3;
foam_mask[((yy + 1) * foam_mask_w) + (xx + 2)] = 0;
foam_mask[((yy + 2) * foam_mask_w) + (xx + 0)] = 1;
foam_mask[((yy + 2) * foam_mask_w) + (xx + 1)] = 0;
foam_mask[((yy + 2) * foam_mask_w) + (xx + 2)] = 1;
changes = 1;
}
}
}
}
while (changes && max_iters > 0);
for (yy = 0; yy < foam_mask_h; yy++)
{
for (xx = 0; xx < foam_mask_w; xx++)
{
n = foam_mask[yy * foam_mask_w + xx];
img = NULL;
if (n == 1)
img = foam_1;
else if (n == 3)
img = foam_3;
else if (n == 5)
img = foam_5;
else if (n == 7)
img = foam_7;
if (img != NULL)
{
dest.x = (xx * FOAM_PROP) - (img->w / 2) + ((rand() % 15) - 7);
dest.y = (yy * FOAM_PROP) - (img->h / 2) + ((rand() % 15) - 7);
SDL_BlitSurface(img, NULL, canvas, &dest);
}
}
}
memcpy(foam_mask, foam_mask_tmp, (sizeof(int) * (foam_mask_w * foam_mask_h)));
update_rect->x = 0;
update_rect->y = 0;
update_rect->w = canvas->w;
update_rect->h = canvas->h;
}
// No setup happened:
void foam_shutdown(magic_api * api ATTRIBUTE_UNUSED)
{
if (foam_snd != NULL)
Mix_FreeChunk(foam_snd);
if (foam_mask != NULL)
free(foam_mask);
if (foam_1 != NULL)
SDL_FreeSurface(foam_1);
if (foam_3 != NULL)
SDL_FreeSurface(foam_3);
if (foam_5 != NULL)
SDL_FreeSurface(foam_5);
if (foam_7 != NULL)
SDL_FreeSurface(foam_7);
}
// Record the color from Tux Paint:
void foam_set_color(magic_api * api ATTRIBUTE_UNUSED, Uint8 r, Uint8 g, Uint8 b)
{
foam_r = r;
foam_g = g;
foam_b = b;
}
// Use colors:
int foam_requires_colors(magic_api * api ATTRIBUTE_UNUSED, int which ATTRIBUTE_UNUSED)
{
return 0; /* FIXME: Would be nice to tint the bubbles */
}
void foam_switchin(magic_api * api ATTRIBUTE_UNUSED, int which ATTRIBUTE_UNUSED, int mode ATTRIBUTE_UNUSED,
SDL_Surface * canvas ATTRIBUTE_UNUSED)
{
}
void foam_switchout(magic_api * api ATTRIBUTE_UNUSED, int which ATTRIBUTE_UNUSED, int mode ATTRIBUTE_UNUSED,
SDL_Surface * canvas ATTRIBUTE_UNUSED)
{
}
int foam_modes(magic_api * api ATTRIBUTE_UNUSED, int which ATTRIBUTE_UNUSED)
{
return (MODE_PAINT);
}
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