1 files changed, 43 insertions, 0 deletions
diff --git a/src/map/path.h b/src/map/path.h
new file mode 100644
index 000000000..b1ca71955
--- /dev/null
+++ b/src/map/path.h
@@ -0,0 +1,43 @@
+// Copyright (c) Athena Dev Teams - Licensed under GNU GPL
+// For more information, see LICENCE in the main folder
+
+#ifndef _PATH_H_
+#define _PATH_H_
+
+#include "map.h" // enum cell_chk
+
+#define MAX_WALKPATH 32
+
+struct walkpath_data {
+	unsigned char path_len,path_pos;
+	unsigned char path[MAX_WALKPATH];
+};
+
+struct shootpath_data {
+	int rx,ry,len;
+	int x[MAX_WALKPATH];
+	int y[MAX_WALKPATH];
+};
+
+// calculates destination cell for knockback
+int path_blownpos(int16 m,int16 x0,int16 y0,int16 dx,int16 dy,int count);
+
+// tries to find a walkable path
+bool path_search(struct walkpath_data *wpd,int16 m,int16 x0,int16 y0,int16 x1,int16 y1,int flag,cell_chk cell);
+
+// tries to find a shootable path
+bool path_search_long(struct shootpath_data *spd,int16 m,int16 x0,int16 y0,int16 x1,int16 y1,cell_chk cell);
+
+
+// distance related functions
+int check_distance(int dx, int dy, int distance);
+#define check_distance_bl(bl1, bl2, distance) check_distance((bl1)->x - (bl2)->x, (bl1)->y - (bl2)->y, distance)
+#define check_distance_blxy(bl, x1, y1, distance) check_distance((bl)->x-(x1), (bl)->y-(y1), distance)
+#define check_distance_xy(x0, y0, x1, y1, distance) check_distance((x0)-(x1), (y0)-(y1), distance)
+
+unsigned int distance(int dx, int dy);
+#define distance_bl(bl1, bl2) distance((bl1)->x - (bl2)->x, (bl1)->y - (bl2)->y)
+#define distance_blxy(bl, x1, y1) distance((bl)->x-(x1), (bl)->y-(y1))
+#define distance_xy(x0, y0, x1, y1) distance((x0)-(x1), (y0)-(y1))
+
+#endif /* _PATH_H_ */