* libee/sprite.c:

+ Beginning of sprite handling within the library.
    + Added support to load files.


git-svn-id: file:///srv/caca.zoy.org/var/lib/svn/ttyvaders/trunk@116 92316355-f0b4-4df1-b90c-862c8a59935f

libee/Makefile.am

@@ -16,5 +16,6 @@ libee_a_SOURCES = \
 	line.c \
 	circle.c \
 	triangle.c \
+	sprite.c \
 	$(NULL)
 

libee/ee.h

@@ -60,6 +60,11 @@
 #define EE_CYAN 9
 #define EE_MAGENTA 10
 
+/*
+ * Types
+ */
+struct ee_sprite;
+
 /*
  * Prototypes
  */
@@ -81,3 +86,7 @@ void ee_fill_triangle(int, int, int, int, int, int, char);
 int ee_rand(int, int);
 int ee_sqrt(int);
 
+struct ee_sprite * ee_load_sprite(const char *);
+void ee_draw_sprite(int, int, struct ee_sprite *);
+void ee_free_sprite(struct ee_sprite *);
+

libee/sprite.c

@@ -0,0 +1,150 @@
+/*
+ *   libee         ASCII-Art library
+ *   Copyright (c) 2002, 2003 Sam Hocevar <sam@zoy.org>
+ *                 All Rights Reserved
+ *
+ *   $Id$
+ *
+ *   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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include "config.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "ee.h"
+
+struct ee_frame
+{
+    int w, h;
+    int dx, dy;
+    char *chars;
+    int *color;
+};
+
+struct ee_sprite
+{
+    int f;
+    int nf;
+    struct ee_frame *frames;
+};
+
+struct ee_sprite *ee_load_sprite(const char *file)
+{
+    char buf[BUFSIZ];
+    struct ee_sprite *sprite;
+    FILE *fd;
+
+    fd = fopen(file, "r");
+    if(fd == NULL)
+        return NULL;
+
+    sprite = malloc(sizeof(struct ee_sprite));
+    sprite->f = 0;
+    sprite->nf = 0;
+    sprite->frames = NULL;
+
+    while(!feof(fd))
+    {
+        int x, y;
+        int w = 0, h = 0, dx = 0, dy = 0;
+        struct ee_frame *frame;
+
+        /* Get width and height */
+        if(!fgets(buf, BUFSIZ, fd))
+            break;
+
+        sscanf(buf, "%i %i %i %i", &w, &h, &dx, &dy);
+        if(w <= 0 || h <= 0 || w > BUFSIZ / 2)
+            break;
+
+        if(sprite->nf++)
+            sprite->frames = realloc(sprite->frames,
+                                     sprite->nf * sizeof(struct ee_frame));
+        else
+            sprite->frames = malloc(sprite->nf * sizeof(struct ee_frame));
+        frame = &sprite->frames[sprite->nf - 1];
+
+        frame->w = w;
+        frame->h = h;
+        frame->dx = dx;
+        frame->dy = dy;
+        frame->chars = malloc(w * h * sizeof(char));
+        frame->color = malloc(w * h * sizeof(int));
+
+        for(y = 0; y < h; y++)
+        {
+            if(!fgets(buf, BUFSIZ, fd))
+                goto failed;
+
+            for(x = 0; x < w; x++)
+                frame->chars[w * y + x] = buf[x];
+        }
+
+        for(y = 0; y < h; y++)
+        {
+            if(!fgets(buf, BUFSIZ, fd))
+                goto failed;
+
+            for(x = 0; x < w; x++)
+                frame->color[w * y + x] = buf[x] - 'a';
+        }
+
+        continue;
+
+    failed:
+        free(sprite->frames[sprite->nf - 1].chars);
+        free(sprite->frames[sprite->nf - 1].color);
+        sprite->nf--;
+        break;
+    }
+
+    fclose(fd);
+
+    if(sprite->nf == 0)
+    {
+        free(sprite);
+        return NULL;
+    }
+
+    return sprite;
+}
+
+void ee_draw_sprite(int x, int y, struct ee_sprite *sprite)
+{
+    int i, j;
+    struct ee_frame *frame = &sprite->frames[sprite->f];
+
+    for(j = 0; j < frame->h; j++)
+    {
+        for(i = 0; i < frame->w; i++)
+        {
+            int col = frame->color[frame->w * j + i];
+            if(col >= 0)
+            {
+                ee_goto(x + i - frame->dx, y + j - frame->dy);
+                ee_color(col);
+                ee_putchar(frame->chars[frame->w * j + i]);
+            }
+        }
+    }
+}
+
+void ee_free_sprite(struct ee_sprite *sprite)
+{
+    free(sprite);
+}
+