1 files changed, 132 insertions, 0 deletions
diff --git a/constants/collision_constants.asm b/constants/collision_constants.asm
new file mode 100644
index 0000000..ebe3856
--- /dev/null
+++ b/constants/collision_constants.asm
@@ -0,0 +1,132 @@
+; collision IDs are built like this:
+; 76543210
+; \__/|\_/
+;   | | \-- SubType
+;   | \---- Flag
+;   \------ Type
+;
+; What exactly flag means or if it
+; means anything is up to Type.
+; Old Types:
+; ???
+; New Types:
+; 0 - Regular            8 - ???
+; 1 - Trees, Grass etc.  9 - Special Talk Action
+; 2 - Water              A - Jump Action
+; 3 - Water 2            B - unused
+; 4 - Land               C - unused
+; 5 - Land 2             D - unused
+; 6 - ???                E - unused
+; 7 - Warps              F - unused
+
+COLLISION_TYPE_MASK          EQU $f0
+COLLISION_SUBTYPE_MASK       EQU $07
+COLLISION_WATER_SUBTYPE_MASK EQU $03
+
+COLLISION_FLAG EQU $08
+
+; old collision constants
+
+OLD_COLLISION_TYPE_REGULAR EQU $00
+OLD_COLLISION_TYPE_SCENERY EQU $10
+OLD_COLLISION_TYPE_WATER   EQU $20
+OLD_COLLISION_TYPE_WATER2  EQU $40
+
+OLD_COLLISION_WALKABLE EQU $00
+OLD_COLLISION_SOLID    EQU $01
+OLD_COLLISION_FLOOR    EQU $03
+OLD_COLLISION_WALL     EQU $04
+
+OLD_COLLISION_LEDGE    EQU $11
+
+OLD_COLLISION_WATER2_S EQU $40
+
+OLD_COLLISION_ROCK EQU $51
+
+OLD_COLLISION_CARPED EQU $60
+OLD_COLLISION_DOOR   EQU $61
+
+OLD_COLLISION_SIGNPOST  EQU $70
+OLD_COLLISION_SHOP_SIGN EQU $71
+OLD_COLLISION_MART_ITEM EQU $72
+OLD_COLLISION_COUNTER   EQU $73
+
+OLD_COLLISION_CUT_TREE EQU $80
+OLD_COLLISION_GRASS    EQU $82
+
+; new collision constants
+
+COLLISION_TYPE_REGULAR EQU $00
+COLLISION_TYPE_SCENERY EQU $10
+COLLISION_TYPE_WATER   EQU $20
+COLLISION_TYPE_WATER2  EQU $30
+COLLISION_TYPE_LAND    EQU $40
+COLLISION_TYPE_LAND2   EQU $50
+COLLISION_TYPE_UNK     EQU $60
+COLLISION_TYPE_WARPS   EQU $70
+COLLISION_TYPE_UNKN2   EQU $80
+COLLISION_TYPE_SPECIAL EQU $90
+COLLISION_TYPE_JUMP    EQU $A0
+
+COLLISION_WALKABLE EQU $00
+COLLISION_SOLID    EQU $07
+COLLISION_CUT_TREE EQU $12
+COLLISION_GRASS    EQU $18
+
+; water collisions
+
+COLLISION_WATER       EQU $21
+COLLISION_WATERFALL   EQU $22
+COLLISION_WATER_SOLID EQU $27
+
+; water collisions 2
+COLLISION_WATER2_E EQU $30
+COLLISION_WATER2_W EQU $31
+COLLISION_WATER2_N EQU $32
+COLLISION_WATER2_S EQU $33
+; $34..$37 will behave like COLLISION_WATER2_E..COLLISION_WATER2_S
+
+; land collisions
+COLLISION_LAND_SLOW EQU $40
+COLLISION_LAND_E    EQU $41
+COLLISION_LAND_W    EQU $42
+COLLISION_LAND_N    EQU $43
+COLLISION_LAND_S    EQU $44
+; $45..$47 will behave like COLLISION_LAND_E
+
+; land collisions 2
+COLLISION_LAND2_E EQU $50
+COLLISION_LAND2_W EQU $51
+COLLISION_LAND2_N EQU $52
+COLLISION_LAND2_S EQU $53
+; $54..$57 will behave like COLLISION_LAND2_E
+
+
+; warp collisions
+COLLISION_CARPET   EQU $70
+COLLISION_DOOR     EQU $71
+COLLISION_STEPS    EQU $72
+
+; special collisions
+COLLISION_COUNTER           EQU $90
+COLLISION_BOOKCASE          EQU $91
+COLLISION_PC                EQU $93
+COLLISION_RADIO             EQU $94
+COLLISION_SIGNPOST          EQU $95
+COLLISION_STRAIGHT_SIGNPOST EQU $97
+
+; jump collisions
+; perform jump in marked direction, else
+; regular walking
+COLLISION_JUMP_E  EQU $a0
+COLLISION_JUMP_W  EQU $a1
+COLLISION_JUMP_N  EQU $a2
+COLLISION_JUMP_S  EQU $a3
+COLLISION_JUMP_SE EQU $a4
+COLLISION_JUMP_SW EQU $a5
+COLLISION_JUMP_NE EQU $a6
+COLLISION_JUMP_NW EQU $a7
+
+NEVER_SOLID     EQU 0
+SOMETIMES_SOLID EQU 1
+ALWAYS_SOLID    EQU 15