ref: d88ea77cfafed57babb432eeb5ba64e7317c9db5
parent: 484ca4f6bb5ef9e56cb964ea20f23f95645e68bf
author: Bryan Bishop <kanzure@gmail.com>
date: Sat May 26 10:46:34 EDT 2012
start to parse the connection data
--- a/extras/crystal.py
+++ b/extras/crystal.py
@@ -4778,6 +4778,27 @@
return map_header
+def get_direction(connection_byte, connection_id):
+ """ Given a connection byte and a connection id, which direction is this
+ connection?
+
+ example:
+ The 0th connection of $5 is SOUTH and the 1st connection is
+ EAST.
+ """
+ connection_options = [0b1000, 0b0100, 0b0010, 0b0001]
+ results = ["NORTH", "SOUTH", "WEST", "EAST"]
+
+ for option in connection_options:
+ if (option & connection_byte) == 0:
+ results[connection_options.index(option)] = ""
+
+ # prune results
+ while "" in results:
+ results.remove("")+
+ return results[connection_id]
+
class SecondMapHeader:
base_label = "SecondMapHeader_"
@@ -4791,8 +4812,11 @@
self.dependencies = None
label = self.make_label()
self.label = Label(name=label, address=address, object=self)
+
+ # the minimum number of bytes is 12
self.last_address = address+12
- #i think it's always a static size?
+ self.size = 12
+
script_parse_table[address : self.last_address] = self
self.parse()
@@ -4802,7 +4826,11 @@
def parse(self):
address = self.address
bytes = rom_interval(address, second_map_header_byte_size, strings=False)
+ size = second_map_header_byte_size
+ # for later
+ self.connections = []
+
self.border_block = HexByte(address=address)
self.height = DecimalParam(address=address+1)
self.width = DecimalParam(address=address+2)
@@ -4825,37 +4853,35 @@
self.event_bank = ord(rom[address+6])
self.event_header_address = calculate_pointer_from_bytes_at(address+9, bank=ord(rom[address+6]))
self.event_header = MapEventHeader(self.event_header_address, map_group=self.map_group, map_id=self.map_id, debug=self.debug)
- self.connections = DecimalParam(address=address+11)
+ self.connection_byte = DecimalParam(address=address+11)
all_map_event_headers.append(self.event_header)
- #border_block = bytes[0]
- #height = bytes[1]
- #width = bytes[2]
- #blockdata_bank = bytes[3]
- #blockdata_pointer = bytes[4] + (bytes[5] << 8)
- #blockdata_address = calculate_pointer(blockdata_pointer, blockdata_bank)
- #script_bank = bytes[6]
- #script_pointer = bytes[7] + (bytes[8] << 8)
- #script_address = calculate_pointer(script_pointer, script_bank)
- #event_bank = script_bank
- #event_pointer = bytes[9] + (bytes[10] << 8)
- #event_address = calculate_pointer(event_pointer, event_bank)
- #connections = bytes[11]
- ####
- #self.bordere_block = border_block
- #self.height = height
- #self.width = width
- #self.blockdata_bank = blockdata_bank
- #self.blockdata_pointer = blockdata_pointer
- #self.blockdata_address = blockdata_address
- #self.script_bank = script_bank
- #self.script_pointer = script_pointer
- #self.script_address = script_address
- #self.event_bank = event_bank
- #self.event_pointer = event_pointer
- #self.event_address = event_address
- #self.connections = connections
+ self.size = size
+ if self.connection_byte == 0:
+ return True
+
+ current_address = address+12
+
+ # short alias
+ cb = self.connection_byte
+
+ # east = 1, west = 2, south = 4, north = 8 (or'd together)
+ east = ((cb & 0x1) != 0)
+ west = ((cb & 0x2) != 0)
+ south = ((cb & 0x4) != 0)
+ north = ((cb & 0x8) != 0)
+ directions = [east, west, south, north]
+ connection_count = directions.count(True)
+
+ for connection in range(0, connection_count):
+ direction = get_direction(self.connection_byte, connection)
+ connection = Connection(current_address, direction=direction, map_group=self.map_group, map_id=self.map_id, debug=self.debug)
+ self.connections.append(connection)
+
+ # 12 bytes each?
+ current_address += connection.size
+
return True
def get_dependencies(self, recompute=False, global_dependencies=set()):
@@ -4883,9 +4909,168 @@
output += "; map event header (bank-then-pointer)\n"
output += "dw " + PointerLabelParam(address=self.address+9, bank=self.event_bank, map_group=self.map_group, map_id=self.map_id, debug=self.debug).to_asm() + "\n\n"
output += "; connections\n"
- output += "db " + self.connections.to_asm()
+ output += "db " + self.connection_byte.to_asm()
+
+ if self.connection_byte == 0:
+ return output
+ else:
+ output += "\n\n"
+
+ connections = "\n".join([connection.to_asm() for connection in self.connections])
+ output += connections
+
return output
+connection = Connection(current_address, direction=direction, map_group=self.map_group, map_id=self.map_id, debug=self.debug)
+
+class Connection:
+ size = 12
+
+ def __init__(self, address, direction=None, map_group=None, map_id=None, debug=True):
+ self.address = address
+ self.direction = direction.lower()
+ self.map_group = map_group
+ self.map_id = map_id
+ self.debug = debug
+ self.last_address = address + self.size
+
+ self.parse()
+
+ def parse(self):
+ current_address = self.address
+
+ is_vertical = ((self.direction == "north") or (self.direction == "south"))
+ is_horizontal = ((self.direction == "east") or (self.direction == "west"))
+
+ connected_map_group_id = ord(rom[current_address])
+ self.connected_map_group_id = connected_map_group_id
+ current_address += 1
+
+ connected_map_id = ord(rom[current_address])
+ self.connected_map_id = connected_map_id
+ current_address += 1
+
+ # window (use JohtoMap's calculation, not this)
+ # up: C701h + height_of_connected_map * (width_of_connected_map + 6)
+ # left: C706h + 2 * width_of_connected_map
+ # down/right: C707h + width_of_connected_map
+ #
+ # 2 bytes (flipped) - X position of starting point for intermediate
+ # tiles (scrolls through connected map line-by-line. this way you can
+ # change Y position also)
+ #
+ # According to JohtoMap, the calculation for tile data pointer is:
+ # int p = otherMap.tileDataLocation;
+ # int h = (otherMap.width - otherMap.height)
+ # if (h > 0)
+ # p += (h * otherMap.height) + (otherMap.height * 3) + (otherMap.height + 3)
+ # else
+ # p += (otherMap.height * otherMap.width) - (otherMap.width * 3);
+ # c.tileDataPointer = gb.Get2BytePointer(p);
+ #
+ # tauwasser calls this "connection strip pointer"
+ tile_data_pointer = ord(rom[current_address]) + (ord(rom[current_address+1]) << 8)
+ strip_pointer = tile_data_pointer
+ self.strip_pointer = tile_data_pointer
+ current_address += 2
+
+ # 10:19 <comet> memoryotherpointer is <comet> what johtomap calls OMDL (in ram where the tiles start getting pulled from the other map)
+ memory_other_pointer = ord(rom[current_address]) + (ord(rom[current_address+1]) << 8)
+ # 10:42 <comet> it would be a good idea to rename otherpointer strippointer or striploc
+ # 10:42 <comet> since thats more accurate
+ # 11:05 <comet> Above: C803h + xoffset
+ # 11:05 <comet> Below: C803h + (m.height + 3) * (m.width + 6) + xoffset
+ # 11:05 <comet> Left: C800h + (m.width + 6) * (yoffset + 3)
+ # 11:05 <comet> Right: C7FDh + (m.width + 6) * (yoffset + 4)
+ #
+ # tauwasser calls this "connection strip destination" and lin calls this "memoryOtherPointer"
+ # Points to the upper left block of the connection strip
+ # (The bank the Blockdata is in, is loaded out of the Mapheader of the connected Map.)
+ # The connection strip is always 3 Blocks high resp. wide
+ # (depending on the connection's direction)
+ strip_destination = memory_other_pointer
+ self.strip_destination = memory_other_pointer
+ current_address += 2
+
+ # length of the connection strip in blocks
+ connection_strip_length = ord(rom[current_address])
+ current_address += 1
+ connected_map_width = ord(rom[current_address])
+ current_address += 1
+
+ self.connection_strip_length = connection_strip_length
+ self.connected_map_width = connected_map_width
+
+ y_position_after_map_change = ord(rom[current_address])
+ current_address += 1
+
+ x_position_after_map_change = ord(rom[current_address])
+ current_address += 1
+
+ # in pokered these were called alignments? same thing?
+ self.yoffset = y_position_after_map_change
+ self.xoffset = x_position_after_map_change
+
+ # tauwasser calls this "window" and lin calls this "memoryCurrentPointer"
+ # Position of the upper left block after entering the Map
+ #
+ # tauwasser's formula for windows:
+ # Above: C701h + Height_of_connected_map * (Width_of_connected_map + 6)
+ # Left: C706h + 2 * Width_of_connected_map
+ # Below/Right: C707h + Width_of_connected_map
+ window = ord(rom[current_address]) + (ord(rom[current_address+1]) << 8)
+ current_address += 2
+
+ self.window = window
+
+ def to_asm(self):
+ output = ""
+ ldirection = self.direction.lower()
+
+ connected_map_group_id = self.connected_map_group_id
+ connected_map_id = self.connected_map_id
+ map_constant_label = get_map_constant_label(map_group=connected_map_group_id, map_id=connected_map_id)
+ if map_constant_label != None:
+ map_group_label = "GROUP_" + map_constant_label
+ map_label = "MAP_" + map_constant_label
+ else:
+ map_group_label = str(connected_map_group_id)
+ map_label = str(connected_map_id)
+
+ output += "; " + self.direction.upper() + " to " \
+ + map_names[connected_map_group_id][connected_map_id]["name"] \
+ + "\n"
+
+ output += "db %s, %s ; connected map (group, id)\n" % (map_group_label, map_label)
+
+ # TODO
+ strip_pointer = self.strip_pointer
+ strip_destination = self.strip_destination
+
+ connection_strip_length = str(self.connection_strip_length)
+ connected_map_width = str(self.connected_map_width)
+ output += "db %s, %s ; (connection strip length, connected map width)\n" % \
+ (connection_strip_length, connected_map_width)
+
+ #if ldirection in ["east", "west"]:
+ # Y_movement_of_connection_strip_in_blocks =
+ #elif direction in ["north", "south"]:
+ # X_movement_of_connection_strip_in_blocks =
+
+ # Above: (Heigt_of_connected_map * 2) - 1
+ # Below: 0
+ # Left/Right: (Y_movement_of_connection_strip_in_blocks * -2)
+ yoffset = self.yoffset # y_position_after_map_change
+
+ # Left: (Width_of_connected_map * 2) - 1
+ # Right: 0
+ # Above/Below: (X_movement_of_connection_strip_in_blocks * -2)
+ xoffset = self.xoffset # x_position_after_map_change
+
+ # TODO
+ window = self.window
+
+ return output
all_second_map_headers = []
def parse_second_map_header_at(address, map_group=None, map_id=None, debug=True):
--
⑨