diff options
Diffstat (limited to 'src/tool/mapcache.c')
| -rw-r--r-- | src/tool/mapcache.c | 74 |
1 files changed, 38 insertions, 36 deletions
diff --git a/src/tool/mapcache.c b/src/tool/mapcache.c index b696c6ee9..49e1826ab 100644 --- a/src/tool/mapcache.c +++ b/src/tool/mapcache.c @@ -9,6 +9,7 @@ #include <unistd.h> #endif +#include "../common/cbasetypes.h" #include "grfio.h" #define MAP_NAME_LENGTH 12 @@ -26,23 +27,23 @@ unsigned long file_size; // Used internally, this structure contains the physical map cells struct map_data { - short xs; - short ys; + int16 xs; + int16 ys; unsigned char *cells; }; // This is the main header found at the very beginning of the file struct main_header { - unsigned long file_size; - unsigned short map_count; + uint32 file_size; + uint16 map_count; } header; // This is the header appended before every compressed map cells info struct map_info { char name[MAP_NAME_LENGTH]; - short xs; - short ys; - long len; + int16 xs; + int16 ys; + int32 len; }; @@ -50,55 +51,52 @@ struct map_info { * Big-endian compatibility functions * *************************************/ -// Converts a short (16 bits) from current machine order to little-endian -short MakeShortLE(short val) +// Converts an int16 from current machine order to little-endian +int16 MakeShortLE(int16 val) { unsigned char buf[2]; buf[0] = (unsigned char)( (val & 0x00FF) ); buf[1] = (unsigned char)( (val & 0xFF00) >> 0x08 ); - return *((short*)buf); + return *((int16*)buf); } -// Converts a long (32 bits) from current machine order to little-endian -long MakeLongLE(long val) +// Converts an int32 from current machine order to little-endian +int32 MakeLongLE(int32 val) { unsigned char buf[4]; buf[0] = (unsigned char)( (val & 0x000000FF) ); buf[1] = (unsigned char)( (val & 0x0000FF00) >> 0x08 ); buf[2] = (unsigned char)( (val & 0x00FF0000) >> 0x10 ); buf[3] = (unsigned char)( (val & 0xFF000000) >> 0x18 ); - return *((long*)buf); + return *((int32*)buf); } -// Reads an unsigned short (16 bits) in little-endian from the buffer -unsigned short GetUShort(const unsigned char *buf) +// Reads an uint16 in little-endian from the buffer +uint16 GetUShort(const unsigned char* buf) { - return ( ((unsigned short)(buf[0])) ) - |( ((unsigned short)(buf[1])) << 0x08 ); + return ( ((uint16)(buf[0])) ) + |( ((uint16)(buf[1])) << 0x08 ); } -// Reads a long (32 bits) in little-endian from the buffer -long GetLong(const unsigned char *buf) +// Reads an uint32 in little-endian from the buffer +uint32 GetULong(const unsigned char* buf) { - return ( ((long)(buf[0])) ) - |( ((long)(buf[1])) << 0x08 ) - |( ((long)(buf[2])) << 0x10 ) - |( ((long)(buf[3])) << 0x18 ); + return ( ((uint32)(buf[0])) ) + |( ((uint32)(buf[1])) << 0x08 ) + |( ((uint32)(buf[2])) << 0x10 ) + |( ((uint32)(buf[3])) << 0x18 ); } -// Reads an unsigned long (32 bits) in little-endian from the buffer -unsigned long GetULong(const unsigned char *buf) +// Reads an int32 in little-endian from the buffer +int32 GetLong(const unsigned char* buf) { - return ( ((unsigned long)(buf[0])) ) - |( ((unsigned long)(buf[1])) << 0x08 ) - |( ((unsigned long)(buf[2])) << 0x10 ) - |( ((unsigned long)(buf[3])) << 0x18 ); + return (int32)GetULong(buf); } // Reads a float (32 bits) from the buffer -float GetFloat(const unsigned char *buf) +float GetFloat(const unsigned char* buf) { - unsigned long val = GetULong(buf); + uint32 val = GetULong(buf); return *((float*)&val); } @@ -111,7 +109,7 @@ int read_map(char *name, struct map_data *m) int water_height; size_t xy, off, num_cells; float height; - unsigned long type; + uint32 type; // Open map GAT sprintf(filename,"data\\%s.gat", name); @@ -131,9 +129,13 @@ int read_map(char *name, struct map_data *m) water_height = NO_WATER; // Read map size and allocate needed memory - m->xs = (short)GetULong(gat+6); - m->ys = (short)GetULong(gat+10); - num_cells = (size_t)m->xs*m->ys; + m->xs = (int16)GetULong(gat+6); + m->ys = (int16)GetULong(gat+10); + if (m->xs <= 0 || m->ys <= 0) { + free(gat); + return 0; + } + num_cells = (size_t)m->xs*(size_t)m->ys; m->cells = (unsigned char *)malloc(num_cells); // Set cell properties @@ -165,7 +167,7 @@ void cache_map(char *name, struct map_data *m) unsigned char *write_buf; // Create an output buffer twice as big as the uncompressed map... this way we're sure it fits - len = m->xs*m->ys*2; + len = (unsigned long)m->xs*(unsigned long)m->ys*2; write_buf = (unsigned char *)malloc(len); // Compress the cells and get the compressed length encode_zip(write_buf, &len, m->cells, m->xs*m->ys); |