fixed carry in incremental runs

sverx · Jan 2, 2015 · 66df82b · 66df82b
1 parent 564b6db
commit 66df82b
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Showing 2 changed files with 14 additions and 12 deletions.
diff --git a/compressor plugin/gfxcomp_stm.dll b/compressor plugin/gfxcomp_stm.dll
diff --git a/compressor plugin/src/gfxcomp_stm.c b/compressor plugin/src/gfxcomp_stm.c
@@ -91,22 +91,22 @@ __declspec(dllexport) const char* getExt() {
 
 __declspec(dllexport) int compressTilemap(uint8_t* source, uint32_t width, uint32_t height, uint8_t* dest, uint32_t destLen) {
 
-    int i,j;
-    unsigned char tmp;
+  int i,j;
+  unsigned char tmp;
 
-    unsigned int in_size = width*height;
-    buf = (unsigned short int*)source;
-    outbuf = dest;
-    outsize = destLen;
+  unsigned int in_size = width*height;
+  buf = (unsigned short int*)source;
+  outbuf = dest;
+  outsize = destLen;
 
-    shoudchangeHH=false;
-    current=0;
-    cur_HH=0;
-    writepos=0;
+  shoudchangeHH=false;
+  current=0;
+  cur_HH=0;
+  writepos=0;
 
-    while (current<in_size) {
+  while (current<in_size) {
 
-    // check if the HH part is the same
+    // check if the HH part of the next tile is the same as what we have
     if (HI(cur_HH)!=HI(buf[current]))
       shoudchangeHH=true;
 
@@ -133,6 +133,8 @@ __declspec(dllexport) int compressTilemap(uint8_t* source, uint32_t width, uint3
         if ((buf[current+i-1]+1)!=buf[current+i]) break;   // leave if no successive
       }
 
+      cur_HH=buf[current]&0xff00;                           // make sure we keep the last HH  
+
       if (!checkHI(i))
         return (0);                                         // please give me more space for output