vcmi/config/terrainViewPatterns.json

// Defines terrain view/types patterns.

// The following table shows the rules for the 3x3 pattern of all terrain types: 
// I) normal(e.g. grass, lava, ...):
// N:		Native type
// D:		Dirt border
// S:		Sand border
// T:		Sand OR dirt border(all Ts in the pattern are replaced by dirt OR sand)
// ?:		D,S or N
// II) dirt:
// N:		Native type or normal type(grass, lava, ...)
// S:		Sand border
// ?:		Any border
// III) sand:
// No rules
// IV) water, rock:
// N:		Native type
// S:		Sand border
// ?:		Any border

// Additional rule for validiting terrain type:
// N!:		Native type always(unlike N for dirt)

// The order of the patterns is important, do not change!
{
	"terrainView" :
	[
		// Extended mixed transitions
		{
			"id" : "x1",
			"data" :
			[
				"T", "N", "N",
				"N", "N", "T",
				"N", "T", "T"
			],
			"mapping" : { "normal" : "73,74", "dirt" : "45" }
		},
		{
			"id" : "x2",
			"data" :
			[
				"D", "D", "N",
				"D", "N", "N",
				"N", "N", "S"
			],
			"mapping" : { "normal" : "75" }
		},
		{
			"id" : "x3",
			"data" :
			[
				"S", "S", "N",
				"S", "N", "N",
				"N", "N", "D"
			],
			"mapping" : { "normal" : "76" }
		},
		{
			"id" : "x4",
			"data" :
			[
				"N", "N", "S",
				"N", "N", "D",
				"S", "D", "D"
			],
			"mapping" : { "normal" : "77" }
		},
		{
			"id" : "x5",
			"data" :
			[
				"N", "N", "D",
				"N", "N", "D",
				"D", "D", "S"
			],
			"mapping" : { "normal" : "78" }
		},
		// No transition
		{
			"id" : "n1",
			"data" :
			[
				"N", "N", "N",
				"N", "N", "N",
				"N", "N", "N"
			],
			"mapping" : { "normal" : "49-72", "dirt" : "21-44", "sand" : "0-23", "water" : "20-32", "rock": "0-7" }
		},
		// Mixed transitions
		{
			"id" : "m1",
			"data" :
			[
				"T", "N", "N",
				"N", "N", "N",
				"N", "N", "T"
			],
			"mapping" : { "normal" : "40, 42", "dirt" : "20" }
		},
		{
			"id" : "m2",
			"data" :
			[
				"D", "N", "N",
				"N", "N", "N",
				"N", "N", "S"
			],
			"mapping" : { "normal" : "41" }
		},
		{
			"id" : "m3",
			"data" :
			[
				"N", "N", "D,N",
				"N", "N", "D",
				"S", "D,N", "D,N"
			],
			"mapping" : { "normal" : "43" }
		},
		{
			"id" : "m4",
			"data" :
			[
				"N", "N", "S",
				"N", "N", "D",
				"D,N", "D", "D,N"
			],
			"mapping" : { "normal" : "44" }
		},
		{
			"id" : "m5",
			"data" :
			[
				"N", "N", "D",
				"N", "N", "D",
				"N", "N", "S"
			],
			"mapping" : { "normal" : "45" }
		},
		{
			"id" : "m6",
			"data" :
			[
				"N", "N", "N",
				"N", "N", "N",
				"D,N", "D", "S"
			],
			"mapping" : { "normal" : "46" }
		},
		{
			"id" : "m7",
			"data" :
			[
				"N", "N", "?",
				"N", "N", "S",
				"D-1,N", "D-1,N", "?"
			],
			"minPoints" : 1,
			"mapping" : { "normal" : "47" }
		},
		{
			"id" : "m8",
			"data" :
			[
				"N", "N", "D-1,N",
				"N", "N", "D-1,N",
				"?", "S", "?"
			],
			"minPoints" : 1,
			"mapping" : { "normal" : "48" }
		},
		// Standard transitions
		{
			"id" : "s2",
			"data" :
			[
				"?", "N", "N",
				"T", "N", "N",
				"?", "N", "N"
			],
			"mapping" : { "normal" : "4-7, 24-27", "dirt" : "4-7", "water" : "4-7", "rock": "2D:16-19" }
		},
		{
			"id" : "s3",
			"data" :
			[
				"?", "T", "?",
				"N", "N", "N",
				"N", "N", "N"
			],
			"mapping" : { "normal" : "8-11, 28-31", "dirt" : "8-11", "water" : "8-11", "rock": "2D:20-23" }
		},
		{
			"id" : "s4",
			"data" :
			[
				"N", "N", "N",
				"N", "N", "s3-1,m7-1,m8-1",
				"N", "s2-1,m7-1,m8-1", "T"
			],
			"minPoints" : 2,
			"mapping" : { "normal" : "12-15, 32-35", "dirt" : "12-15", "water" : "12-15", "rock": "4D:24-31" }
		},
		{
			"id" : "s5",
			"data" :
			[
				"T", "T", "?",
				"T", "N", "s6-1,m1-1,m2-1,N",
				"?,x1-1,s1-1", "s6-1,m1-1,m2-1,N", "N"
			],
			"minPoints" : 1,
			"mapping" : { "normal" : "16-17, 36-37", "dirt" : "16-17", "water" : "16-17", "rock": "4D:32-39" }
		},
		{
			"id" : "s6",
			"data" :
			[
				"N", "N", "N",
				"N", "N", "s5-1,N",
				"N", "s5-1,N", "T"
			],
			"minPoints" : 1,
			"mapping" : { "normal" : "18-19, 38-39", "dirt" : "18-19", "water" : "18-19", "rock": "4D:40-47" }
		},
		{
			"id" : "s1",
			"data" :
			[
				"?", "?", "?",
				"?", "N", "N",
				"T", "N", "N"
			],
			"mapping" : { "normal" : "0-3, 20-23", "dirt" : "0-3", "water" : "0-3", "rock": "4D:8-15" }
		}
	],
	"terrainType" :
	[
		{
			"id" : "n1",
			"data" :
			[
				"N!", "N!", "?",
				"N!", "N!", "?",
				"?", "?", "?"
			]
		},
		{
			"id" : "n2",
			"data" :
			[
				"N!", "N!", "D,S",
				"D,S", "N!", "N!",
				"D,S", "D,S", "N!"
			]
		},
		{
			"id" : "n3",
			"data" :
			[
				"D,S", "D,S", "N!",
				"D,S", "N!", "N!",
				"N!", "N!", "D,S"
			]
		},
		{
			"id" : "s1",
			"data" :
			[
				"T", "N", "N",
				"N", "N", "N",
				"N", "T-1,N", "T-1,N"
			],
			"minPoints" : 1
		},
		{
			"id" : "s2",
			"data" :
			[
				"N", "N", "T",
				"T-1,N", "N", "N",
				"T-1,N", "N", "N"
			],
			"minPoints" : 1
		}
	]
}