added read snap and read tick

2 files changed, 87 insertions, 6 deletions

diff --git a/inc/demo.h b/inc/demo.h
index 154a333..0b398b0 100644
--- a/inc/demo.h
+++ b/inc/demo.h
@@ -9,10 +9,10 @@ typedef struct
     unsigned char version;
     char netversion[64];
     char mapname[64];
-    unsigned char mapsize[4];   // Big endian int
-    unsigned char mapcrc[4];    // Big endian int
+    unsigned char mapsize[4]; // Big endian int
+    unsigned char mapcrc[4];  // Big endian int
     char type[8];
-    unsigned char length[4];    // Big endian int
+    unsigned char length[4]; // Big endian int
     char timestamp[20];
 } demoheader;
 
@@ -22,13 +22,84 @@ typedef struct
     char data[260];
 } demotimeline;
 
+/* demomap struct */
+typedef struct
+{
+    unsigned char sha256[32];
+    unsigned char *data;
+} demomap;
+
+typedef struct
+{
+    unsigned short type;
+    unsigned short id;
+    int numdata;
+    int *data;
+} demosnapitem;
+
+/* Chunk types */
+typedef struct
+{
+    int datasize;
+    int numitems;
+    int *offsets;
+    demosnapitem *items;
+} demosnap;
+
+typedef struct
+{
+    char keyframe;
+    char innline;
+    int delta;
+} demotick;
+
+typedef struct
+{
+} demodelta;
+
+typedef struct
+{
+} demomessage;
+
+/* union for different chunks */
+typedef union {
+    demosnap *snap;
+    demotick *tick;
+    demodelta *delta;
+    demomessage *message;
+} chunkdata;
+
+/* demochunk struct */
+typedef struct
+{
+    unsigned char type;
+    chunkdata data;
+} demochunk;
+
+/* demodata struct, stores all chunks */
+typedef struct
+{
+    int numchunks;
+    demochunk *chunks;
+} demodata;
+
 /* Read demo header from demofile into given demoheader */
 /* Returns a positive number on success, negative on fail */
-int readdemoheader(FILE *demofile, demoheader *demoheader);
+int readdemoheader(FILE *demofile, demoheader *header);
 
 /* Read demo timeline from demofile into given demoheader */
 /* Returns a positive number on success, negative on fail */
 /* Must have read the header from demofile beforehand */
-int readdemotimeline(FILE *demofile, demotimeline *demotimeline);
+int readdemotimeline(FILE *demofile, demotimeline *timeline);
+
+/* Read demo map from demofile into given demomap */
+/* Returns a positive number on success, negative on fail */
+/* Must have read the demoheader and demotimeline beforehand */
+int readdemomap(FILE *demofile, demomap *map, int mapsize);
+
+/* Reads a chunk from demofile into given chunk */
+/* Returns a positive number on success, 0 on EOF, and negative number on error */
+/* Will allocate memory if chunk is snap, delta or message */
+int readdemochunk(FILE *demofile, demochunk *chunk, unsigned char version);
 
-#endif // DEMO_H
\ No newline at end of file
+#endif // DEMO_H
diff --git a/inc/pack.h b/inc/pack.h
new file mode 100644
index 0000000..d04d6ca
--- /dev/null
+++ b/inc/pack.h
@@ -0,0 +1,10 @@
+#ifndef PACK_H
+#define PACK_H
+
+#include <stdio.h>
+
+/* reads a teeworlds packed int from given buffer */
+/* the given pointer is incremented */
+int readint(unsigned char **cp);
+
+#endif // PACK_H