{
    "defaultTile": "deepwater",
    "tileSpecs": {
        "deepwater": {
            "draw": { "background": "navy", "steps": [] },
            "constrain": {
                "neighbors": ["deepwater", "water"]
            }
        },
        "water": {
            "draw": { "background": "blue", "steps": [] },
            "constrain": {
                "neighbors": ["water", "deepwater", "beach"]
            }
        },
        "beach": {
            "draw": { "background": "sandybeige", "steps": [] },
            "constrain": {
                "neighbors": ["beach", "water", "grass"]
            }
        },
        "grass": {
            "draw": { "background": "grassgreen", "steps": [] },
            "constrain": {
                "neighbors": ["grass", "forest", "hills", "beach"]
            }
        },
        "deepforest": {
            "draw": { "background": "darkforestgreen", "steps": [] },
            "constrain": {
                "neighbors": ["deepforest", "forest"]
            }
        },
        "forest": {
            "draw": { "background": "forestgreen", "steps": [] },
            "constrain": {
                "neighbors": ["forest", "deepforest", "grass"]
            }
        },
        "hills": {
            "draw": { "background": "earthybrown", "steps": [] },
            "constrain": {
                "neighbors": ["grass", "forest", "mountain"]
            }
        },
        "mountain": {
            "draw": { "background": "gray", "steps": [] },
            "constrain": {
                "neighbors": ["hills", "mountain", "deepmountain"]
            }
        },
        "deepmountain": {
            "draw": { "background": "lightgray", "steps": [] },
            "constrain": {
                "neighbors": ["deepmountain", "mountain"]
            }
        }
    }
}