files: move getsprid to wadres

[flatwaifu.git] / src / common / wadres.c

diff --git a/src/common/wadres.c b/src/common/wadres.c
index 88583b78ece81075a003012b3c704177ced50cba..43251c8d9d00507d5a251e24e422400bbd2c034a 100644 (file)
--- a/src/common/wadres.c
+++ b/src/common/wadres.c
@@ -1,9 +1,10 @@
 #include <stdint.h>
 #include <string.h>
+#include <stdlib.h>
 #include <assert.h>
 
-#include "common/wadres.h"
-#include "common/streams.h"
+#include "wadres.h"
+#include "streams.h"
 #include "cp866.h"
 
 typedef struct Entry {
@@ -12,10 +13,19 @@ typedef struct Entry {
   int f;
 } Entry;
 
+typedef struct Block {
+  int id;
+  int ref;
+  char data[];
+} Block;
+
 static int n_wads;
 static int n_resources;
 static Stream *wads[MAX_WADS];
 static Entry resources[MAX_RESOURCES];
+static Block *blocks[MAX_RESOURCES];
+
+static int s_start, s_end;
 
 static int check_header (Stream *r) {
   assert(r != NULL);
@@ -52,7 +62,8 @@ static int WADRES_addresource (const Entry *e) {
   return -1;
 }
 
-static int WADRES_read (Stream *r) {
+static int WADRES_read (int f) {
+  Stream *r = wads[f];
   stream_setpos(r, 4); // skip magic
   int32_t n = stream_read32(r);
   int32_t dir = stream_read32(r);
@@ -62,6 +73,7 @@ static int WADRES_read (Stream *r) {
     Entry e;
     e.offset = stream_read32(r);
     e.size = stream_read32(r);
+    e.f = f;
     stream_read(e.name, 8, 1, r);
     ok = WADRES_addresource(&e) != -1;
   }
@@ -71,10 +83,12 @@ static int WADRES_read (Stream *r) {
 int WADRES_rehash (void) {
   int ok = 1;
   for (int i = 0; i < n_wads; ++i) {
-    if (!WADRES_read(wads[i])) {
+    if (!WADRES_read(i)) {
       ok = 0;
     }
   }
+  s_start = WADRES_find("S_START");
+  s_end = WADRES_find("S_END");
   return ok;
 }
 
@@ -90,6 +104,26 @@ int WADRES_maxids (void) {
   return n_resources;
 }
 
+int WADRES_findsprite (const char n[4], int s, int d, char *dir) {
+  s += 'A';
+  d += '0';
+  for (int i = s_start + 1; i < s_end; i++) {
+    char a, b;
+    char *wn = resources[i].name;
+    if (cp866_strncasecmp(wn, n, 4) == 0 && (wn[4] == s || wn[6] == s)) {
+      a = wn[4] == s ? wn[5] : 0;
+      b = wn[6] == s ? wn[7] : 0;
+      if (a == '0' || b == '0' || a == d || b == d) {
+        if (dir != NULL) {
+          *dir = (a != '0' && b == '0') || (a != d && b == d);
+        }
+        return i;
+      }
+    }
+  }
+  return -1;
+}
+
 Stream *WADRES_getbasereader (int id) {
   assert(id >= 0 && id < n_resources);
   return wads[resources[id].f];
@@ -118,3 +152,50 @@ void WADRES_getdata (int id, void *data) {
   stream_read(data, resources[id].size, 1, r);
   stream_setpos(r, pos);
 }
+
+void *WADRES_lock (int id) {
+  assert(id >= -1 && id < MAX_RESOURCES);
+  if (id >= 0) {
+    Block *x = blocks[id];
+    if (x) {
+      x->ref += 1;
+      return x->data;
+    } else {
+      x = malloc(sizeof(Block) + WADRES_getsize(id));
+      if (x) {
+        x->id = id;
+        x->ref = 1;
+        WADRES_getdata(id, x->data);
+        blocks[id] = x;
+        return x->data;
+      }
+    }
+  }
+  return NULL;
+}
+
+void WADRES_unlock (void *data) {
+  if (data) {
+    Block *x = data - sizeof(Block);
+    int id = x->id;
+    assert(id >= 0 && id < MAX_RESOURCES);
+    x->ref -= 1;
+    assert(x->ref >= 0);
+#if 0
+    if (x->ref == 0) {
+      blocks[id] = NULL;
+      free(x);
+    }
+#endif
+  }
+}
+
+int WADRES_locked (int id) {
+  assert(id >= -1 && id < MAX_RESOURCES);
+  return (id >= 0) && (blocks[id] != NULL) && (blocks[id]->ref >= 1);
+}
+
+int WADRES_was_locked (int id) {
+  assert(id >= -1 && id < MAX_RESOURCES);
+  return (id >= 0) && (blocks[id] != NULL) && (blocks[id]->ref >= 0);
+}