625 lines
20 KiB
C
625 lines
20 KiB
C
/*
|
|
rails.c
|
|
|
|
Draw train tracks.
|
|
|
|
Last updated: January 16, 2024
|
|
*/
|
|
#include "tp_magic_api.h"
|
|
#include "SDL_image.h"
|
|
#include "SDL_mixer.h"
|
|
|
|
#define SEG_NONE 0
|
|
|
|
#define SEG_LEFT 1
|
|
#define SEG_RIGHT 2
|
|
#define SEG_TOP 4
|
|
#define SEG_BOTTOM 8
|
|
|
|
#define SEG_LEFT_RIGHT (SEG_LEFT | SEG_RIGHT)
|
|
#define SEG_TOP_BOTTOM (SEG_TOP | SEG_BOTTOM)
|
|
#define SEG_RIGHT_TOP (SEG_RIGHT | SEG_TOP)
|
|
#define SEG_RIGHT_BOTTOM (SEG_RIGHT | SEG_BOTTOM)
|
|
#define SEG_LEFT_TOP (SEG_LEFT | SEG_TOP)
|
|
#define SEG_LEFT_BOTTOM (SEG_LEFT | SEG_BOTTOM)
|
|
#define SEG_LEFT_RIGHT_TOP (SEG_LEFT | SEG_RIGHT | SEG_TOP)
|
|
#define SEG_LEFT_RIGHT_BOTTOM (SEG_LEFT | SEG_RIGHT | SEG_BOTTOM)
|
|
#define SEG_LEFT_TOP_BOTTOM (SEG_LEFT | SEG_TOP | SEG_BOTTOM)
|
|
#define SEG_RIGHT_TOP_BOTTOM (SEG_RIGHT | SEG_TOP | SEG_BOTTOM)
|
|
#define SEG_LEFT_RIGHT_TOP_BOTTOM (SEG_LEFT | SEG_RIGHT | SEG_TOP | SEG_BOTTOM)
|
|
|
|
#ifdef __ANDROID__
|
|
#define inline static
|
|
#endif
|
|
|
|
Mix_Chunk *rails_snd;
|
|
unsigned int img_w, img_h;
|
|
unsigned int rails_segments_x, rails_segments_y; //how many segments do we have?
|
|
inline int rails_math_ceil(int x, int y); //ceil() in cstdlib returns float and is relative slow, so we'll use our one
|
|
static Uint8 *rails_status_of_segments; //a place to store an info about bitmap used for selected segment
|
|
static char **rails_images; //the pathes to all the images needed
|
|
static unsigned int rails_segment_modified; //which segment was modified this time?
|
|
static unsigned int rails_segment_modified_last = 0; //which segment was last modified
|
|
static unsigned int rails_segment_to_add = 0; //a segment that should be added to solve corner joints
|
|
static SDL_Rect modification_rect;
|
|
static SDL_Surface *canvas_backup;
|
|
|
|
// Housekeeping functions
|
|
|
|
SDL_Surface *rails_one, *rails_three, *rails_four, *rails_corner;
|
|
|
|
Uint32 rails_api_version(void);
|
|
int rails_modes(magic_api * api, int which);
|
|
void rails_set_color(magic_api * api, int which, SDL_Surface * canvas,
|
|
SDL_Surface * last, Uint8 r, Uint8 g, Uint8 b, SDL_Rect * update_rect);
|
|
int rails_init(magic_api * api, Uint8 disabled_features, Uint8 complexity_level);
|
|
int rails_get_tool_count(magic_api * api);
|
|
SDL_Surface *rails_get_icon(magic_api * api, int which);
|
|
char *rails_get_name(magic_api * api, int which);
|
|
int rails_get_group(magic_api * api, int which);
|
|
int rails_get_order(int which);
|
|
char *rails_get_description(magic_api * api, int which, int mode);
|
|
int rails_requires_colors(magic_api * api, int which);
|
|
void rails_release(magic_api * api, int which,
|
|
SDL_Surface * canvas, SDL_Surface * snapshot, int x, int y, SDL_Rect * update_rect);
|
|
void rails_shutdown(magic_api * api);
|
|
void rails_switchin(magic_api * api, int which, int mode, SDL_Surface * canvas);
|
|
void rails_switchout(magic_api * api, int which, int mode, SDL_Surface * canvas);
|
|
inline unsigned int rails_get_segment(int x, int y);
|
|
|
|
#define POINT_TYPE typeof(((SDL_Rect *)NULL)->x)
|
|
inline void rails_extract_coords_from_segment(unsigned int segment, POINT_TYPE * x, POINT_TYPE * y);
|
|
static void rails_flip(void *ptr, SDL_Surface * dest, SDL_Surface * src);
|
|
static void rails_flip_flop(void *ptr, SDL_Surface * dest, SDL_Surface * src);
|
|
static void rails_rotate(void *ptr, SDL_Surface * dest, SDL_Surface * src, unsigned int direction);
|
|
void rails_click(magic_api * api, int which, int mode, SDL_Surface * canvas,
|
|
SDL_Surface * snapshot, int x, int y, SDL_Rect * update_rect);
|
|
static Uint8 rails_select_image(Uint16 segment);
|
|
static void rails_draw(void *ptr, int which, SDL_Surface * canvas,
|
|
SDL_Surface * last, int x, int y, unsigned int segment);
|
|
|
|
static void rails_draw_wrapper(void *ptr, int which, SDL_Surface * canvas, SDL_Surface * last, int x, int y);
|
|
void rails_drag(magic_api * api, int which, SDL_Surface * canvas,
|
|
SDL_Surface * snapshot, int ox, int oy, int x, int y, SDL_Rect * update_rect);
|
|
Uint8 rails_accepted_sizes(magic_api * api, int which, int mode);
|
|
Uint8 rails_default_size(magic_api * api, int which, int mode);
|
|
void rails_set_size(magic_api * api, int which, int mode, SDL_Surface * canvas, SDL_Surface * last, Uint8 size,
|
|
SDL_Rect * update_rect);
|
|
|
|
Uint32 rails_api_version(void)
|
|
{
|
|
return (TP_MAGIC_API_VERSION);
|
|
}
|
|
|
|
int rails_modes(magic_api * api ATTRIBUTE_UNUSED, int which ATTRIBUTE_UNUSED)
|
|
{
|
|
return (MODE_PAINT);
|
|
}
|
|
|
|
void rails_set_color(magic_api * api ATTRIBUTE_UNUSED, int which ATTRIBUTE_UNUSED,
|
|
SDL_Surface * canvas ATTRIBUTE_UNUSED, SDL_Surface * last ATTRIBUTE_UNUSED,
|
|
Uint8 r ATTRIBUTE_UNUSED, Uint8 g ATTRIBUTE_UNUSED, Uint8 b ATTRIBUTE_UNUSED,
|
|
SDL_Rect * update_rect ATTRIBUTE_UNUSED)
|
|
{
|
|
}
|
|
|
|
int rails_init(magic_api * api, Uint8 disabled_features ATTRIBUTE_UNUSED, Uint8 complexity_level ATTRIBUTE_UNUSED)
|
|
{
|
|
char fname[1024];
|
|
Uint8 i; //is always < 3, so Uint8 seems to be a good idea
|
|
|
|
rails_images = (char **)malloc(sizeof(char *) * 4);
|
|
|
|
for (i = 0; i < 4; i++)
|
|
rails_images[i] = (char *)malloc(sizeof(char) * 1024);
|
|
|
|
snprintf(rails_images[0], 1024 * sizeof(char), "%simages/magic/rails_one.png", api->data_directory);
|
|
snprintf(rails_images[1], 1024 * sizeof(char), "%simages/magic/rails_three.png", api->data_directory);
|
|
snprintf(rails_images[2], 1024 * sizeof(char), "%simages/magic/rails_four.png", api->data_directory);
|
|
snprintf(rails_images[3], 1024 * sizeof(char), "%simages/magic/rails_corner.png", api->data_directory);
|
|
|
|
rails_one = IMG_Load(rails_images[0]);
|
|
rails_three = IMG_Load(rails_images[1]);
|
|
rails_four = IMG_Load(rails_images[2]);
|
|
rails_corner = IMG_Load(rails_images[3]);
|
|
|
|
if (rails_one == NULL)
|
|
{
|
|
fprintf(stderr, "Can't load image %s\n", rails_images[0]);
|
|
return (0);
|
|
}
|
|
if (rails_three == NULL)
|
|
{
|
|
fprintf(stderr, "Can't load image %s\n", rails_images[1]);
|
|
return (0);
|
|
}
|
|
if (rails_four == NULL)
|
|
{
|
|
fprintf(stderr, "Can't load image %s\n", rails_images[2]);
|
|
return (0);
|
|
}
|
|
if (rails_corner == NULL)
|
|
{
|
|
fprintf(stderr, "Can't load image %s\n", rails_images[3]);
|
|
return (0);
|
|
}
|
|
|
|
img_w = rails_one->w;
|
|
img_h = rails_one->h;
|
|
|
|
snprintf(fname, sizeof(fname), "%ssounds/magic/rails.wav", api->data_directory);
|
|
rails_snd = Mix_LoadWAV(fname);
|
|
|
|
return (1);
|
|
}
|
|
|
|
int rails_get_tool_count(magic_api * api ATTRIBUTE_UNUSED)
|
|
{
|
|
return 1;
|
|
}
|
|
|
|
SDL_Surface *rails_get_icon(magic_api * api, int which ATTRIBUTE_UNUSED)
|
|
{
|
|
char fname[1024];
|
|
|
|
snprintf(fname, sizeof(fname), "%simages/magic/rails.png", api->data_directory);
|
|
|
|
return (IMG_Load(fname));
|
|
}
|
|
|
|
char *rails_get_name(magic_api * api ATTRIBUTE_UNUSED, int which ATTRIBUTE_UNUSED)
|
|
{
|
|
return strdup(gettext_noop("Rails"));
|
|
}
|
|
|
|
int rails_get_group(magic_api * api ATTRIBUTE_UNUSED, int which ATTRIBUTE_UNUSED)
|
|
{
|
|
return MAGIC_TYPE_PAINTING;
|
|
}
|
|
|
|
int rails_get_order(int which ATTRIBUTE_UNUSED)
|
|
{
|
|
return 2200;
|
|
}
|
|
|
|
char *rails_get_description(magic_api * api ATTRIBUTE_UNUSED, int which ATTRIBUTE_UNUSED, int mode ATTRIBUTE_UNUSED)
|
|
{
|
|
return strdup(gettext_noop("Click and drag to draw train track rails on your picture."));
|
|
}
|
|
|
|
int rails_requires_colors(magic_api * api ATTRIBUTE_UNUSED, int which ATTRIBUTE_UNUSED)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
void rails_release(magic_api * api ATTRIBUTE_UNUSED,
|
|
int which ATTRIBUTE_UNUSED,
|
|
SDL_Surface * canvas ATTRIBUTE_UNUSED,
|
|
SDL_Surface * snapshot ATTRIBUTE_UNUSED,
|
|
int x ATTRIBUTE_UNUSED, int y ATTRIBUTE_UNUSED, SDL_Rect * update_rect ATTRIBUTE_UNUSED)
|
|
{
|
|
}
|
|
|
|
void rails_shutdown(magic_api * api ATTRIBUTE_UNUSED)
|
|
{
|
|
Uint8 i;
|
|
|
|
if (rails_snd != NULL)
|
|
Mix_FreeChunk(rails_snd);
|
|
SDL_FreeSurface(rails_one);
|
|
SDL_FreeSurface(rails_three);
|
|
SDL_FreeSurface(rails_four);
|
|
SDL_FreeSurface(rails_corner);
|
|
SDL_FreeSurface(canvas_backup);
|
|
|
|
for (i = 0; i < 4; i++)
|
|
free(rails_images[i]);
|
|
free(rails_images);
|
|
if (rails_status_of_segments != NULL)
|
|
free(rails_status_of_segments);
|
|
}
|
|
|
|
void rails_switchin(magic_api * api ATTRIBUTE_UNUSED,
|
|
int which ATTRIBUTE_UNUSED, int mode ATTRIBUTE_UNUSED, SDL_Surface * canvas)
|
|
{
|
|
//we've to compute the quantity of segments in each direction
|
|
|
|
canvas_backup =
|
|
SDL_CreateRGBSurface(SDL_SWSURFACE, canvas->w, canvas->h,
|
|
canvas->format->BitsPerPixel, canvas->format->Rmask,
|
|
canvas->format->Gmask, canvas->format->Bmask, canvas->format->Amask);
|
|
|
|
SDL_BlitSurface(canvas, NULL, canvas_backup, NULL);
|
|
rails_segments_x = rails_math_ceil(canvas->w, img_w);
|
|
rails_segments_y = rails_math_ceil(canvas->h, img_h);
|
|
//status_of_segments[0] will not be used, we write in rails_status_of_segments[1 to segments_x*segments_y]
|
|
rails_status_of_segments = (Uint8 *) calloc(rails_segments_x * rails_segments_y + 1, sizeof(Uint8));
|
|
}
|
|
|
|
void rails_switchout(magic_api * api ATTRIBUTE_UNUSED,
|
|
int which ATTRIBUTE_UNUSED, int mode ATTRIBUTE_UNUSED, SDL_Surface * canvas ATTRIBUTE_UNUSED)
|
|
{
|
|
if (rails_status_of_segments != NULL)
|
|
{
|
|
free(rails_status_of_segments);
|
|
rails_status_of_segments = NULL;
|
|
}
|
|
}
|
|
|
|
// Interactivity functions
|
|
|
|
inline int rails_math_ceil(int x, int y)
|
|
{
|
|
int temp;
|
|
|
|
temp = (int)x / y;
|
|
|
|
if (x % y)
|
|
return temp + 1;
|
|
else
|
|
return temp;
|
|
}
|
|
|
|
inline unsigned int rails_get_segment(int x, int y)
|
|
{
|
|
int xx; //segments are numerated just like pixels
|
|
int yy; //in computer graphics: left upper (=1), ... ,right upper,
|
|
|
|
//left bottom, ... , right bottom
|
|
xx = rails_math_ceil(x, img_w);
|
|
yy = rails_math_ceil(y, img_h);
|
|
|
|
return (yy - 1) * rails_segments_x + xx;
|
|
|
|
}
|
|
|
|
inline void rails_extract_coords_from_segment(unsigned int segment, POINT_TYPE * x, POINT_TYPE * y)
|
|
{ //extracts the coords of the beginning and the segment
|
|
*x = ((segment % rails_segments_x) - 1) * img_w; //useful to set update_rect as small as possible
|
|
*y = (int)(segment / rails_segments_x) * img_h;
|
|
}
|
|
|
|
static void rails_flip(void *ptr, SDL_Surface * dest, SDL_Surface * src)
|
|
{
|
|
magic_api *api = (magic_api *) ptr;
|
|
POINT_TYPE x, y;
|
|
|
|
for (x = 0; x < dest->w; x++)
|
|
for (y = 0; y < dest->h; y++)
|
|
api->putpixel(dest, x, y, api->getpixel(src, x, src->h - y - 1));
|
|
}
|
|
|
|
static void rails_flip_flop(void *ptr, SDL_Surface * dest, SDL_Surface * src)
|
|
{
|
|
magic_api *api = (magic_api *) ptr;
|
|
POINT_TYPE x, y;
|
|
|
|
for (x = 0; x < dest->w; x++)
|
|
for (y = 0; y < dest->h; y++)
|
|
api->putpixel(dest, x, y, api->getpixel(src, y, x));
|
|
}
|
|
|
|
static void rails_rotate(void *ptr, SDL_Surface * dest, SDL_Surface * src, unsigned int direction)
|
|
//src and dest must have same size
|
|
{
|
|
magic_api *api = (magic_api *) ptr;
|
|
POINT_TYPE x, y;
|
|
|
|
if (direction) //rotate -90 degs
|
|
{
|
|
for (x = 0; x < dest->w; x++)
|
|
for (y = 0; y < dest->h; y++)
|
|
api->putpixel(dest, x, y, api->getpixel(src, y, src->w - x - 1));
|
|
}
|
|
else //rotate +90 degs
|
|
{
|
|
for (x = 0; x < dest->w; x++)
|
|
for (y = 0; y < dest->h; y++)
|
|
api->putpixel(dest, x, y, api->getpixel(src, src->h - y - 1, x));
|
|
}
|
|
|
|
}
|
|
|
|
void rails_click(magic_api * api, int which, int mode ATTRIBUTE_UNUSED,
|
|
SDL_Surface * canvas, SDL_Surface * snapshot, int x, int y, SDL_Rect * update_rect)
|
|
{
|
|
rails_segment_modified_last = 0;
|
|
rails_drag(api, which, canvas, snapshot, x, y, x, y, update_rect);
|
|
}
|
|
|
|
static Uint8 rails_select_image(Uint16 segment)
|
|
{
|
|
int take_up, take_down;
|
|
int val_up, val_down, val_left, val_right;
|
|
int from_top = 0, from_bottom = 0, from_left = 0, from_right = 0;
|
|
int from_top_right = 0, from_top_left = 0, from_bottom_right = 0, from_bottom_left = 0;
|
|
int TOP = 0, BOTTOM = 0, LEFT = 0, RIGHT = 0;
|
|
|
|
//Checking from were we come...
|
|
if (rails_segment_modified_last > 0)
|
|
{
|
|
if (segment == rails_segment_modified_last + 1)
|
|
from_left = 1;
|
|
|
|
if (segment == rails_segment_modified_last - 1)
|
|
from_right = 1;
|
|
|
|
if (segment == rails_segment_modified_last - rails_segments_x)
|
|
from_bottom = 1;
|
|
|
|
if (segment == rails_segment_modified_last + rails_segments_x)
|
|
from_top = 1;
|
|
|
|
// Segments are joining by the corner
|
|
// We need to add a new segment to join by side, adding clockwise
|
|
if (segment == rails_segment_modified_last + rails_segments_x + 1)
|
|
{
|
|
from_top_left = 1;
|
|
rails_segment_to_add = segment - rails_segments_x;
|
|
}
|
|
|
|
if (segment == rails_segment_modified_last + rails_segments_x - 1)
|
|
{
|
|
from_top_right = 1;
|
|
rails_segment_to_add = segment + 1;
|
|
}
|
|
|
|
if (segment == rails_segment_modified_last - rails_segments_x - 1)
|
|
{
|
|
from_bottom_right = 1;
|
|
rails_segment_to_add = segment + rails_segments_x;
|
|
}
|
|
if (segment == rails_segment_modified_last - rails_segments_x + 1)
|
|
{
|
|
from_bottom_left = 1;
|
|
rails_segment_to_add = segment - 1;
|
|
}
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
take_up = segment - rails_segments_x;
|
|
if (take_up <= 0)
|
|
val_up = SEG_NONE;
|
|
else
|
|
val_up = rails_status_of_segments[take_up];
|
|
|
|
take_down = segment + rails_segments_x;
|
|
if (take_down > (signed)(rails_segments_x * rails_segments_y))
|
|
val_down = SEG_NONE;
|
|
else
|
|
val_down = rails_status_of_segments[take_down];
|
|
|
|
if ((segment % rails_segments_x) == 1)
|
|
val_left = SEG_NONE;
|
|
else
|
|
val_left = rails_status_of_segments[segment - 1];
|
|
|
|
if ((segment % rails_segments_x) == 0)
|
|
val_right = SEG_NONE;
|
|
else
|
|
val_right = rails_status_of_segments[segment + 1];
|
|
|
|
if (from_left || (val_left & SEG_RIGHT) || from_bottom_left)
|
|
{
|
|
LEFT = 1;
|
|
}
|
|
if (from_right || (val_right & SEG_LEFT) || from_top_right)
|
|
RIGHT = 1;
|
|
if (from_top || (val_up & SEG_BOTTOM) || from_top_left)
|
|
TOP = 1;
|
|
if (from_bottom || (val_down & SEG_TOP) || from_bottom_right)
|
|
BOTTOM = 1;
|
|
|
|
|
|
if (TOP && BOTTOM && LEFT && RIGHT)
|
|
return SEG_LEFT_RIGHT_TOP_BOTTOM;
|
|
if (LEFT && RIGHT && TOP)
|
|
return SEG_LEFT_RIGHT_TOP;
|
|
if (LEFT && RIGHT && BOTTOM)
|
|
return SEG_LEFT_RIGHT_BOTTOM;
|
|
if (TOP && BOTTOM && LEFT)
|
|
return SEG_LEFT_TOP_BOTTOM;
|
|
if (TOP && BOTTOM && RIGHT)
|
|
return SEG_RIGHT_TOP_BOTTOM;
|
|
if (LEFT && RIGHT)
|
|
return SEG_LEFT_RIGHT;
|
|
if (TOP && BOTTOM)
|
|
return SEG_TOP_BOTTOM;
|
|
if (LEFT && TOP)
|
|
return SEG_LEFT_TOP;
|
|
if (LEFT && BOTTOM)
|
|
return SEG_LEFT_BOTTOM;
|
|
if (RIGHT && TOP)
|
|
return SEG_RIGHT_TOP;
|
|
if (RIGHT && BOTTOM)
|
|
return SEG_RIGHT_BOTTOM;
|
|
if (LEFT | RIGHT)
|
|
return SEG_LEFT_RIGHT;
|
|
return SEG_TOP_BOTTOM;
|
|
|
|
|
|
|
|
}
|
|
|
|
static void rails_draw(void *ptr, int which ATTRIBUTE_UNUSED,
|
|
ATTRIBUTE_UNUSED SDL_Surface * canvas,
|
|
SDL_Surface * last ATTRIBUTE_UNUSED, int x, int y ATTRIBUTE_UNUSED, unsigned int segment)
|
|
{
|
|
magic_api *api = (magic_api *) ptr;
|
|
SDL_Surface *result, *temp;
|
|
Uint8 image;
|
|
unsigned int use_temp;
|
|
|
|
use_temp = 0;
|
|
if (segment > rails_segments_x * rails_segments_y)
|
|
return;
|
|
//modification_rect.x and modification_rect.y are set by function
|
|
rails_extract_coords_from_segment(segment, &modification_rect.x, &modification_rect.y);
|
|
modification_rect.h = img_w;
|
|
modification_rect.w = img_h;
|
|
|
|
image = rails_select_image(segment); //select the image to display
|
|
|
|
if (rails_status_of_segments[segment] == image)
|
|
return;
|
|
|
|
rails_status_of_segments[segment] = image; //and write it to global table
|
|
|
|
|
|
result =
|
|
SDL_CreateRGBSurface(SDL_SWSURFACE, img_w, img_h,
|
|
rails_one->format->BitsPerPixel,
|
|
rails_one->format->Rmask, rails_one->format->Gmask,
|
|
rails_one->format->Bmask, rails_one->format->Amask);
|
|
|
|
temp =
|
|
SDL_CreateRGBSurface(SDL_SWSURFACE, img_w, img_h,
|
|
rails_one->format->BitsPerPixel,
|
|
rails_one->format->Rmask, rails_one->format->Gmask,
|
|
rails_one->format->Bmask, rails_one->format->Amask);
|
|
|
|
SDL_BlitSurface(canvas_backup, &modification_rect, result, NULL);
|
|
|
|
|
|
switch (image)
|
|
{
|
|
case 0:
|
|
case SEG_TOP_BOTTOM:
|
|
SDL_BlitSurface(canvas_backup, &modification_rect, result, NULL);
|
|
SDL_BlitSurface(rails_one, NULL, result, NULL);
|
|
break;
|
|
|
|
case SEG_LEFT_RIGHT:
|
|
SDL_BlitSurface(canvas_backup, &modification_rect, result, NULL);
|
|
rails_rotate(api, temp, rails_one, 1);
|
|
use_temp = 1;
|
|
break;
|
|
|
|
case SEG_LEFT_RIGHT_TOP_BOTTOM:
|
|
SDL_BlitSurface(canvas_backup, &modification_rect, result, NULL);
|
|
SDL_BlitSurface(rails_four, NULL, result, NULL);
|
|
break;
|
|
|
|
case SEG_LEFT_RIGHT_TOP:
|
|
SDL_BlitSurface(rails_three, NULL, result, NULL);
|
|
break;
|
|
|
|
case SEG_LEFT_RIGHT_BOTTOM:
|
|
rails_flip(api, temp, rails_three);
|
|
use_temp = 1;
|
|
break;
|
|
|
|
case SEG_LEFT_TOP_BOTTOM:
|
|
rails_rotate(api, temp, rails_three, 0);
|
|
use_temp = 1;
|
|
break;
|
|
|
|
case SEG_RIGHT_TOP_BOTTOM:
|
|
rails_rotate(api, temp, rails_three, 1);
|
|
use_temp = 1;
|
|
break;
|
|
|
|
case SEG_RIGHT_TOP:
|
|
SDL_BlitSurface(rails_corner, NULL, result, NULL);
|
|
break;
|
|
|
|
case SEG_RIGHT_BOTTOM:
|
|
rails_flip(api, temp, rails_corner);
|
|
use_temp = 1;
|
|
break;
|
|
|
|
case SEG_LEFT_TOP:
|
|
rails_rotate(api, temp, rails_corner, 0);
|
|
use_temp = 1;
|
|
break;
|
|
|
|
case SEG_LEFT_BOTTOM:
|
|
rails_flip_flop(api, temp, rails_corner);
|
|
use_temp = 1;
|
|
break;
|
|
}
|
|
|
|
if (use_temp)
|
|
SDL_BlitSurface(temp, NULL, result, NULL);
|
|
|
|
SDL_FreeSurface(temp);
|
|
SDL_BlitSurface(result, NULL, canvas, &modification_rect);
|
|
SDL_FreeSurface(result);
|
|
api->playsound(rails_snd, (x * 255) / canvas->w, 255);
|
|
}
|
|
|
|
static void rails_draw_wrapper(void *ptr, int which, SDL_Surface * canvas, SDL_Surface * last, int x, int y)
|
|
{
|
|
rails_segment_modified = rails_get_segment(x, y);
|
|
|
|
|
|
if ((rails_segment_modified == rails_segment_modified_last))
|
|
return;
|
|
if (rails_segment_modified > 0)
|
|
{
|
|
rails_draw((void *)ptr, which, canvas, last, x, y, rails_segment_modified);
|
|
}
|
|
if (rails_segment_modified_last > 0)
|
|
rails_draw((void *)ptr, which, canvas, last, x, y, rails_segment_modified_last);
|
|
|
|
if (rails_segment_to_add > 0)
|
|
{
|
|
rails_draw((void *)ptr, which, canvas, last, x, y, rails_segment_to_add);
|
|
rails_draw((void *)ptr, which, canvas, last, x, y, rails_segment_modified_last);
|
|
rails_segment_to_add = 0;
|
|
}
|
|
if (rails_segment_modified > 0)
|
|
rails_segment_modified_last = rails_segment_modified;
|
|
}
|
|
|
|
void rails_drag(magic_api * api, int which, SDL_Surface * canvas,
|
|
SDL_Surface * snapshot, int ox, int oy, int x, int y, SDL_Rect * update_rect)
|
|
{
|
|
int start_x, end_x, start_y, end_y, segment_start, segment_end, w, h;
|
|
|
|
// avoiding to write out of the canvas
|
|
if ((x < canvas->w) && (y < canvas->h) && (ox < canvas->w)
|
|
&& (oy < canvas->h) && ((signed)x > 0) && ((signed)y > 0) && ((signed)ox > 0) && ((signed)oy > 0))
|
|
{
|
|
api->line((void *)api, which, canvas, snapshot, ox, oy, x, y, img_w / 2, rails_draw_wrapper);
|
|
|
|
start_x = min(ox, x);
|
|
end_x = max(ox, x);
|
|
start_y = min(oy, y);
|
|
end_y = max(oy, y);
|
|
|
|
segment_start = rails_get_segment(start_x - img_w, start_y - img_h);
|
|
segment_end = rails_get_segment(end_x + img_w, end_y + img_h);
|
|
|
|
x = ((segment_start % rails_segments_x) - 1) * img_w;
|
|
y = (int)(segment_start / rails_segments_x) * img_h;
|
|
w = ((segment_end % rails_segments_x) - 1) * img_w - x + img_w;
|
|
h = (int)(segment_end / rails_segments_x) * img_h - y + img_h;
|
|
|
|
update_rect->x = x;
|
|
update_rect->y = y;
|
|
update_rect->w = w;
|
|
update_rect->h = h;
|
|
}
|
|
|
|
}
|
|
|
|
|
|
Uint8 rails_accepted_sizes(magic_api * api ATTRIBUTE_UNUSED, int which ATTRIBUTE_UNUSED, int mode ATTRIBUTE_UNUSED)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
Uint8 rails_default_size(magic_api * api ATTRIBUTE_UNUSED, int which ATTRIBUTE_UNUSED, int mode ATTRIBUTE_UNUSED)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
void rails_set_size(magic_api * api ATTRIBUTE_UNUSED, int which ATTRIBUTE_UNUSED, int mode ATTRIBUTE_UNUSED,
|
|
SDL_Surface * canvas ATTRIBUTE_UNUSED, SDL_Surface * last ATTRIBUTE_UNUSED,
|
|
Uint8 size ATTRIBUTE_UNUSED, SDL_Rect * update_rect ATTRIBUTE_UNUSED)
|
|
{
|
|
}
|