basic map loader

diff --git a/fishladder.c b/fishladder.c
index 20bb05111561a98602c2b2e4426ebd40140dea8f..e2d5ec17dfbecaafa68cec236d1d348d8d936323 100644 (file)
--- a/fishladder.c
+++ b/fishladder.c
@@ -38,6 +38,160 @@ int main( int argc, char *argv[] )
        vg_init( argc, argv, "FishLadder" );
 }
 
+#define CELL_FLAG_INPUT 0x1
+#define CELL_FLAG_OUTPUT 0x2
+ #define CELL_FLAG_IO (CELL_FLAG_INPUT|CELL_FLAG_OUTPUT)
+#define CELL_FLAG_WALL 0x4
+
+static struct
+{
+       u32 x,y;
+       
+       struct cell
+       {       
+               u32 flags;
+               char *conditions;
+       }
+       * cells;
+       
+       u32 *io;
+}
+map;
+
+static void map_free(void)
+{
+       for( int i = 0; i < arrlen( map.io ); i ++ )
+       {
+               arrfree( map.cells[ map.io[i] ].conditions );
+       }
+
+       arrfree( map.cells );
+       arrfree( map.io );
+       map.x = 0;
+       map.y = 0;
+       map.cells = NULL;
+       map.io = NULL;
+}
+
+static int map_load( const char *str )
+{
+       map_free();
+
+       char *c = str;
+       
+       // Scan for width
+       for(;; map.x ++)
+       {
+               if( str[map.x] == ';' )
+                       break;
+               else if( !str[map.x] )
+               {
+                       vg_error( "Unexpected EOF when parsing level!\n" );
+                       return 0;
+               }
+       }
+       
+       struct cell *row = arraddnptr( map.cells, map.x );
+       int cx = 0;
+       int reg_start = 0, reg_end = 0;
+       
+       for(;;)
+       {
+               if( !*c )
+                       break;
+       
+               if( *c == ';' )
+               {
+                       c ++;
+
+                       // Parse attribs
+                       if( *c != '\n' )
+                       {
+                               while( *c )
+                               {
+                                       if( reg_start < reg_end )
+                                       {
+                                               if( *c >= 'a' && *c <= 'z' )
+                                               {
+                                                       arrpush( map.cells[ map.io[ reg_start ] ].conditions, *c );
+                                               }
+                                               else
+                                               {
+                                                       if( *c == ',' || *c == '\n' )
+                                                       {
+                                                               reg_start ++;
+                                                               
+                                                               if( *c == '\n' )
+                                                                       break;
+                                                       }
+                                                       else
+                                                       {
+                                                               vg_error( "Unkown attrib '%c' (row: %u)\n", *c, map.y );
+                                                               return 0;
+                                                       }
+                                               }
+                                       }
+                                       else
+                                       {
+                                               vg_error( "Over-assigned values (row: %u)\n", map.y );
+                                               return 0;
+                                       }
+                                       
+                                       c ++;
+                               }
+                       }
+                       
+                       if( reg_start != reg_end )
+                       {
+                               vg_error( "Not enough values assigned (row: %u, %u of %u)\n", map.y, reg_start, reg_end );
+                               return 0;
+                       }
+                       
+                       if( cx != map.x )
+                       {
+                               vg_error( "Map row underflow (row: %u, %u<%u)\n", map.y, cx, map.x );
+                               return 0;
+                       }
+                       
+                       row = arraddnptr( map.cells, map.x );
+                       cx = 0;
+                       map.y ++;
+                       reg_end = reg_start = arrlen( map.io );
+               }
+               else
+               {
+                       if( cx == map.x )
+                       {
+                               vg_error( "Map row overflow (row: %u, %u>%u)\n", map.y, cx, map.x );
+                               return 0;
+                       }
+                       
+                       row[ cx ].conditions = NULL;
+               
+                       // Parse the various cell types
+                       if( *c == '+' || *c == '-' )
+                       {
+                               arrpush( map.io, cx + map.y*map.x );
+                               row[ cx ++ ].flags = *c == '+'? CELL_FLAG_INPUT: CELL_FLAG_OUTPUT;
+                               reg_end ++;
+                       }
+                       else if( *c == '#' )
+                       {
+                               row[ cx ++ ].flags = CELL_FLAG_WALL;
+                       }
+                       else
+                       {
+                               row[ cx ++ ].flags = 0x00;
+                       }
+               }
+       
+               c ++;
+       }
+       
+       vg_success( "Map loaded! (%u:%u)\n", map.x, map.y );
+       return 1;
+}
+
 void vg_update(void)
 {
        // Update camera
@@ -128,11 +282,21 @@ void vg_start(void)
        glEnableVertexAttribArray( 0 );
        
        VG_CHECK_GL();
+       
+       map_load
+       ( 
+               "###########;\n"
+               "#    +    #;abab\n"
+               "#         #;\n"
+               "#         #;\n"
+               "#  -   -  #;aa,bb\n"
+               "###########;\n"
+       );
 }
 
 void vg_free(void)
 {
-       
+       map_free();
 }
 
 void vg_ui(void)