|
|
| (2 intermediate revisions by 2 users not shown) |
| Line 1: |
Line 1: |
| − | '''Block mappings''' are used to arrange large amounts of 8x8 tiles into larger tiles (16x16, followed by 128x128 or 256x256). These larger tiles are then arranged into the level layout.
| + | #REDIRECT [[sega:Block mappings]] |
| − | | |
| − | ==16x16 tiles==
| |
| − | ===Games===
| |
| − | *[[Sonic 1|Sonic the Hedgehog]]
| |
| − | *[[Sonic the Hedgehog 2]]
| |
| − | *[[Sonic 3 & Knuckles]]
| |
| − | *[[Sonic CD]]
| |
| − | *[[Sonic Crackers]]
| |
| − | | |
| − | ===Format===
| |
| − | 16x16 tiles consist of four [[Cell|8x8 tiles]], arranged in the shape:
| |
| − | {| class="prettytable" style="text-align: center;"
| |
| − | | width="40px" | 0
| |
| − | | width="40px" | 1
| |
| − | |-
| |
| − | | 2
| |
| − | | 3
| |
| − | |}
| |
| − | | |
| − | Each 8x8 tile is represented by one word which, like all SEGA Genesis VDP pattern indices, is a bitmask of the form PCCY XAAA AAAA AAAA. P is the priority flag, CC is the palette line to use, X and Y indicate that the sprite should be flipped horizontally and vertically respectively, and AAA AAAA AAAA is the actual tile index, i.e. the VRAM offset of the pattern divided by $20.
| |
| − | | |
| − | ==128x128 tiles==
| |
| − | ===Games===
| |
| − | *[[Sonic the Hedgehog 2]]
| |
| − | *[[Sonic 3 & Knuckles]]
| |
| − | *[[Sonic Crackers]]
| |
| − | | |
| − | ===Format===
| |
| − | 128x128 tiles consist of sixty-four 16x16 tiles, arranged in the shape:
| |
| − | {|class="prettytable" style="text-align: center;"
| |
| − | | width="40px" | 0
| |
| − | | width="40px" | 1
| |
| − | | width="40px" | 2
| |
| − | | width="40px" | 3
| |
| − | | width="40px" | 4
| |
| − | | width="40px" | 5
| |
| − | | width="40px" | 6
| |
| − | | width="40px" | 7
| |
| − | |-
| |
| − | | 8
| |
| − | | 9
| |
| − | | 10
| |
| − | | 11
| |
| − | | 12
| |
| − | | 13
| |
| − | | 14
| |
| − | | 15
| |
| − | |-
| |
| − | | 16
| |
| − | | 17
| |
| − | | 18
| |
| − | | 19
| |
| − | | 20
| |
| − | | 21
| |
| − | | 22
| |
| − | | 23
| |
| − | |-
| |
| − | | 24
| |
| − | | 25
| |
| − | | 26
| |
| − | | 27
| |
| − | | 28
| |
| − | | 29
| |
| − | | 30
| |
| − | | 31
| |
| − | |-
| |
| − | | 32
| |
| − | | 33
| |
| − | | 34
| |
| − | | 35
| |
| − | | 36
| |
| − | | 37
| |
| − | | 38
| |
| − | | 39
| |
| − | |-
| |
| − | | 40
| |
| − | | 41
| |
| − | | 42
| |
| − | | 43
| |
| − | | 44
| |
| − | | 45
| |
| − | | 46
| |
| − | | 47
| |
| − | |-
| |
| − | | 48
| |
| − | | 49
| |
| − | | 50
| |
| − | | 51
| |
| − | | 52
| |
| − | | 53
| |
| − | | 54
| |
| − | | 55
| |
| − | |-
| |
| − | | 56
| |
| − | | 57
| |
| − | | 58
| |
| − | | 59
| |
| − | | 60
| |
| − | | 61
| |
| − | | 62
| |
| − | | 63
| |
| − | |}
| |
| − | | |
| − | Each 16x16 tile has a two-byte value with the format SSTT YXII IIII IIII. SS is the [[solidity]] of the tile in the alternate collision layer - 00 means not solid, 01 means top solid, 10 means left/right/bottom solid, and 11 means all solid. TT is the solidity of the tile in the normal collision layer - 00 means not solid, 01 means top solid, 10 means left/right/bottom solid, and 11 means all solid. Y is the Y-flip flag, X is the X-flip flag, and II IIII IIII is the index of the 16x16 tile to use.
| |
| − | | |
| − | ==256x256 tiles==
| |
| − | ===Games===
| |
| − | *[[Sonic 1|Sonic the Hedgehog]]
| |
| − | *[[Sonic CD]]
| |
| − | | |
| − | ===Format===
| |
| − | Similar to 128x128 tiles. Values for '''X''' are:
| |
| − | ================
| |
| − | value solid
| |
| − | ================
| |
| − | 0 not
| |
| − | 2 top
| |
| − | 4 l/r
| |
| − | 6 all
| |
| − | 8 not
| |
| − | A top
| |
| − | C l/r
| |
| − | E all
| |
| − | Add the following values to '''XYYY''' to change the display mode:
| |
| − | 0800 flip x
| |
| − | 1000 flip y
| |
| − | 1800 flip x+y
| |
| − | | |
| − | [[Category:Data Formats]]
| |
