diff options
Diffstat (limited to 'src/randtiles.cpp')
| -rw-r--r-- | src/randtiles.cpp | 158 |
1 files changed, 141 insertions, 17 deletions
diff --git a/src/randtiles.cpp b/src/randtiles.cpp index c7388dd..4af3bf7 100644 --- a/src/randtiles.cpp +++ b/src/randtiles.cpp @@ -1,22 +1,146 @@ -#include "randtiles.h"
-
-u32 djb2(u8 *str) {
- u32 hash = 5381;
- int c;
-
- while (c = *str++)
- hash = ((hash << 5) + hash) + c;
-
- return hash;
-}
+#include <game.h>
+
+class RandomTileData {
+public:
+ enum Type {
+ CHECK_NONE = 0,
+ CHECK_HORZ = 1,
+ CHECK_VERT = 2,
+ CHECK_BOTH = 3
+ };
+
+ class Entry {
+ public:
+ u8 lowerBound, upperBound;
+ u8 count, type;
+ u32 tileNumOffset;
+
+ u8 *getTileNums() {
+ return ((u8*)this) + tileNumOffset;
+ }
+ };
+
+ class Section {
+ public:
+ u32 nameOffset;
+ u32 entryCount;
+ Entry entries[1]; // variable size
+
+ const char *getName() {
+ return ((char*)this) + nameOffset;
+ }
+ };
+
+ u32 magic;
+ u32 sectionCount;
+ u32 offsets[1]; // variable size
+
+ Section *getSection(int id) {
+ return (Section*)(((char*)this) + offsets[id]);
+ }
+
+ Section *getSection(const char *name);
+
+ static RandomTileData *instance;
+};
-RandTiles_Section *RandTiles_Search(void *file, u32 nameHash) {
- for (int i = 0; i < RandTiles_GetSectionCount(file); i++) {
- RandTiles_Section *sect = RandTiles_GetSection(file, i);
-
- if (sect->nameHash == nameHash)
+class RTilemapClass : public TilemapClass {
+public:
+ // NEWER ADDITIONS
+ RandomTileData::Section *sections[4];
+};
+
+RandomTileData::Section *RandomTileData::getSection(const char *name) {
+ for (int i = 0; i < sectionCount; i++) {
+ RandomTileData::Section *sect = getSection(i);
+
+ if (strcmp(name, sect->getName()) == 0) {
return sect;
+ }
}
-
+
return 0;
}
+
+
+// Real tile handling code
+
+RandomTileData *RandomTileData::instance = 0;
+
+dDvdLoader_c RandTileLoader;
+
+extern "C" bool RandTileLoadHook() {
+ OSReport("Trying to load...");
+ void *buf = RandTileLoader.load("/NewerRes/RandTiles.bin");
+ if (buf == 0) {
+ OSReport("Failed.\n");
+ return false;
+ } else {
+ OSReport("Successfully loaded RandTiles.bin.\n");
+ RandomTileData::instance = (RandomTileData*)buf;
+ return true;
+ }
+}
+
+
+extern "C" void IdentifyTilesets(RTilemapClass *self) {
+ self->_C0C = 0xFFFFFFFF;
+
+ for (int i = 0; i < 4; i++) {
+ const char *tilesetName = BGDatClass::instance->getTilesetName(self->areaID, i);
+
+ self->sections[i] = RandomTileData::instance->getSection(tilesetName);
+ }
+}
+
+extern "C" void TryAndRandomise(RTilemapClass *self, BGRender *bgr) {
+ int fullTile = bgr->tileToPlace & 0x3FF;
+ int tile = fullTile & 0xFF;
+ int tileset = fullTile >> 8;
+
+ RandomTileData::Section *rtSect = self->sections[tileset];
+ if (rtSect == 0)
+ return;
+
+ for (int i = 0; i < rtSect->entryCount; i++) {
+ RandomTileData::Entry *entry = &rtSect->entries[i];
+
+ if (tile >= entry->lowerBound && tile <= entry->upperBound) {
+ // Found it!!
+ // Try to make one until we meet the conditions
+ u8 *tileNums = entry->getTileNums();
+ u8 chosen = 0xFF;
+
+ u16 *top = 0, *left = 0, *right = 0, *bottom = 0;
+ if (entry->type == RandomTileData::CHECK_HORZ || entry->type == RandomTileData::CHECK_BOTH) {
+ left = self->getPointerToTile(bgr->curX - 1, bgr->curY);
+ right = self->getPointerToTile(bgr->curX + 1, bgr->curY);
+ }
+
+ if (entry->type == RandomTileData::CHECK_VERT || entry->type == RandomTileData::CHECK_BOTH) {
+ top = self->getPointerToTile(bgr->curX, bgr->curY - 1);
+ bottom = self->getPointerToTile(bgr->curX, bgr->curY + 1);
+ }
+
+ while (true) {
+ chosen = tileNums[MakeRandomNumber(entry->count)];
+
+ if (top != 0 && *top == chosen)
+ continue;
+ if (bottom != 0 && *bottom == chosen)
+ continue;
+ if (left != 0 && *left == chosen)
+ continue;
+ if (right != 0 && *right == chosen)
+ continue;
+ break;
+ }
+
+ bgr->tileToPlace = chosen;
+
+ return;
+ }
+ }
+}
+
+
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