Start decomping fieldmap

src/fieldmap.c

@@ -0,0 +1,42 @@
+#include "global.h"
+#include "overworld.h"
+#include "script.h"
+#include "fieldmap.h"
+
+void sub_8058A00(struct MapHeader *mapHeader);
+void map_copy_with_padding(u16 *map, u16 width, u16 height);
+void mapheader_copy_mapdata_of_adjacent_maps(struct MapHeader *mapHeader);
+void sub_80591C4(void);
+
+struct BackupMapData VMap;
+EWRAM_DATA u16 gBackupMapData[VIRTUAL_MAP_SIZE];
+
+const struct MapHeader * mapconnection_get_mapheader(struct MapConnection * connection)
+{
+    return get_mapheader_by_bank_and_number(connection->mapGroup, connection->mapNum);
+}
+
+void not_trainer_hill_battle_pyramid(void)
+{
+    sub_8058A00(&gMapHeader);
+    mapheader_run_script_with_tag_x1();
+}
+
+void sub_80589E8(void)
+{
+    sub_8058A00(&gMapHeader);
+    sub_80591C4();
+    mapheader_run_script_with_tag_x1();
+}
+
+void sub_8058A00(struct MapHeader * mapHeader)
+{
+    const struct MapData * mapData = mapHeader->mapData;
+    CpuFastFill(0x03FF03FF, gBackupMapData, sizeof(gBackupMapData));
+    VMap.map = gBackupMapData;
+    VMap.Xsize = mapData->width + 15;
+    VMap.Ysize = mapData->height + 14;
+    AGB_ASSERT_EX(VMap.Xsize * VMap.Ysize <= VIRTUAL_MAP_SIZE, "C:/WORK/POKeFRLG/src/pm_lgfr_ose/source/fieldmap.c", 158);
+    map_copy_with_padding(mapData->map, mapData->width, mapData->height);
+    mapheader_copy_mapdata_of_adjacent_maps(mapHeader);
+}