vcmi/config/terrainViewPatterns.json

// Defines terrain view 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
// S:		Sand border
// ?:		Any border
// III) sand:
// No rules
// IV) water, rock:
// N:		Native type
// S:		Sand border
// ?:		Any border

// The order of the patterns is important, do not change!
[
	// 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" : "s1",
		"data" :
		[
			"T,N-1", "T,N-2", "T,N-3",
			"T,N-2", "N", "N",
			"T", "N", "N"
		],
		"maxPoints" : 3,
		"mapping" : { "normal" : "0-3, 20-23", "dirt" : "0-3", "water" : "0-3", "rock": "4D:8-15" }
	},
	{
		"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",
			"?", "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" }
	}
]