connection_helper - print out a formula for connection math

hg-commit-id: 27e8096bb251

3 files changed, 95 insertions, 3 deletions

diff --git a/common.asm b/common.asm
index c08c4b1a..5bc2e611 100644
--- a/common.asm
+++ b/common.asm
@@ -8138,7 +8138,7 @@ PalletTown_h:
 	db NORTH | SOUTH ; connections
 
 	db ROUTE_1
-	dw $4192,$C6EB ; pointers
+	dw Route1Blocks + 150,$C6EB ; pointers
 	db $0A,$0A ; bigness, width
 	db $23,$00 ; alignments
 	dw $C809 ; window
diff --git a/extras/connection_helper.py b/extras/connection_helper.py
new file mode 100644
index 00000000..4c7e1ce0
--- /dev/null
+++ b/extras/connection_helper.py
@@ -0,0 +1,94 @@
+#!/usr/bin/python
+#author: Bryan Bishop <kanzure@gmail.com>
+#date: 2012-01-15
+#help with connection math
+import extract_maps
+from pretty_map_headers import map_constants, map_name_cleaner, offset_to_pointer
+
+def print_connections(map_id):
+    map1        = extract_maps.map_headers[map_id]
+    map1_name   = map1["name"]
+    connections = map1["connections"]
+    
+    for connection_id in connections:
+        connection          = connections[connection_id]
+        direction           = connection["direction"]
+        connected_pointer   = int(connection["connected_map_tile_pointer"], 16)
+        current_pointer     = int(connection["current_map_tile_pointer"], 16)
+        map2_id             = connection["map_id"]
+        map2                = extract_maps.map_headers[map2_id]
+        map2_name           = map2["name"]
+        map2_cname          = map_name_cleaner(map2["name"], None)[:-2]
+        map2_bank           = int(map2["bank"], 16)
+        map2_blocks_pointer = offset_to_pointer(int(map2["map_pointer"], 16))
+        map2_height         = int(map2["y"], 16)
+        map2_width          = int(map2["x"], 16)
+
+        print map1_name + " (id=" + str(map_id) + ") " + direction + " to " + map2_name
+        print "map2 blocks pointer: " + hex(map2_blocks_pointer)
+        print "map2 height: " + str(map2_height)
+        print "map2 width: " + str(map2_width)
+        print "map1 connection pointer: " + hex(connected_pointer)
+        
+        shift = 0
+        #not sure about the calculated shift for NORTH or SOUTH
+        if  direction == "NORTH":
+            calculated = map2_blocks_pointer + (map2_height - 3) * map2_width
+            result = connected_pointer - calculated
+            if result != 0:
+                shift = result #seems to always be 2?
+                calculated = map2_blocks_pointer + (map2_height - 3) * map2_width + shift
+                print "shift: " + str(shift)
+                formula = map2_cname + "Blocks + (" + map2_cname + "Height - 3) * " + map2_cname + "Width + " + str(shift)
+            else:
+                formula = map2_cname + "Blocks + (" + map2_cname + "Height - 3) * " + map2_cname + "Width"
+        elif direction == "SOUTH":
+            calculated = map2_blocks_pointer
+            result = connected_pointer - calculated
+            formula = map2_cname + "Blocks"
+            if result != 0:
+                shift = result
+                calculated = map2_blocks_pointer + shift
+                print "shift: " + str(shift)
+                formula += " + " + str(shift)
+        elif direction == "WEST":
+            calculated = map2_blocks_pointer - 3 + (map2_width)
+            result = connected_pointer - calculated
+            formula = map2_cname + " - 3 + (" + map2_cname + "Width)"
+            if result != 0:
+                shift = result / map2_width
+                shift += 1
+                calculated = map2_blocks_pointer - 3 + (map2_width * shift)
+                print "shift: " + str(shift)
+                formula = map2_cname + " - 3 + (" + map2_cname + "Width * " + str(shift) + ")"
+        elif direction == "EAST":
+            calculated = map2_blocks_pointer + (map2_width)
+            result = connected_pointer - calculated
+            print ".. result is: " + str(result)
+            formula = map2_cname + " + (" + map2_cname + "Width)"
+            if result != 0:
+                shift = result / map2_width
+                shift += 1
+                calculated = map2_blocks_pointer + (map2_width * shift)
+                print "shift: " + str(shift)
+                formula = map2_cname + " + (" + map2_cname + "Width * " + str(shift) + ")"
+        
+        print "formula: " + formula
+
+        result = connected_pointer - calculated
+        print "result: " + str(result) 
+
+        print "\n",
+
+if __name__ == "__main__":
+    extract_maps.load_rom()
+    extract_maps.load_map_pointers()
+    extract_maps.read_all_map_headers()
+    
+    #trouble:
+    #print_connections(13)
+    #print_connections(15)
+    
+    for map_id in extract_maps.map_headers.keys():
+        if map_id not in extract_maps.bad_maps:
+            print_connections(map_id)
diff --git a/extras/extract_maps.py b/extras/extract_maps.py
index 25a6ee9c..81a64bf6 100644
--- a/extras/extract_maps.py
+++ b/extras/extract_maps.py
@@ -560,8 +560,6 @@ def get_direction(connection_byte, connection_id):
     #prune results
     while "" in results:
         results.remove("")
-    print results
-    print "connection_id is: " + str(connection_id) + " and byte is: " + hex(connection_byte)
     return results[connection_id]
 
 def read_map_header(address, bank):