//TODO: crimtane, enemies
//Not doing: spawning
//Might not be possible: thorns (its breaking behavior would need a way for a pixel to detect when a pixel tryMove'd into its position)

function includesArray(parentArray, testArray) {
    for (let i = 0; i < parentArray.length; i++) {
        if (parentArray[i].every(function(value, index) { return value === testArray[index]})) {
            return true;
        }
    }
    return false;
}

crimRate = 0.002

function grassSpread(pixel,dirt,grass) {
	pixel.dirtArray = [] //initialize dirt neighbor list
	for (i = -3; i < 4; i++) { //iterate around
		for (j = -3; j < 4; j++) {
			if (!isEmpty(pixel.x+i,pixel.y+j,true)) { //check for a pixel to see if it's dirt
				if(Array.isArray(dirt)) {
					if(dirt.includes(pixelMap[pixel.x+i][pixel.y+j].element)) { //see if it's dirt
						if(!includesArray(pixel.dirtArray,[i,j])) { //avoid duplicate dirt entry
							pixel.dirtArray.push([i,j]) //store dirt
						}
					}
				} else {
					if(pixelMap[pixel.x+i][pixel.y+j].element == dirt) { //see if it's dirt
						if(!includesArray(pixel.dirtArray,[i,j])) { //avoid duplicate dirt entry
							pixel.dirtArray.push([i,j]) //store dirt
						}
					}
				}
			}
		}
	}
	for (k = 0; k < pixel.dirtArray.length; k++) { //iterate through dirt list
		if(Math.random() < crimRate*3.5) { //random chance
			if(isEmpty(pixel.x+pixel.dirtArray[k][0],pixel.y+pixel.dirtArray[k][1]-1)) { //check for empty space to grow grass
				createPixel(grass,pixel.x+pixel.dirtArray[k][0],pixel.y+pixel.dirtArray[k][1]-1) //place grass above dirt
			}
		}
	}
}

function crimSpread(pixel) { //corrupting (crimsonning?) blocks
	for (i = -3; i < 4; i++) { 
		for (j = -3; j < 4; j++) {
			if(i == 0 && j == 0) {
				continue
			}
			if(!isEmpty(pixel.x+i,pixel.y+j,true)) {
				if(pixelMap[pixel.x+i][pixel.y+j].element == "grass") {
					if(Math.random() < crimRate) {
						changePixel(pixelMap[pixel.x+i][pixel.y+j],"crimson_grass")
					}
				} else if(pixelMap[pixel.x+i][pixel.y+j].element == "rock") {
					if(Math.random() < crimRate) {
						changePixel(pixelMap[pixel.x+i][pixel.y+j],"crimstone")
					}
				} else if(pixelMap[pixel.x+i][pixel.y+j].element == "sand") {
					if(Math.random() < crimRate) {
						changePixel(pixelMap[pixel.x+i][pixel.y+j],"crimsand")
					}
				} else if(pixelMap[pixel.x+i][pixel.y+j].element == "ice") {
					if(Math.random() < crimRate) {
						changePixel(pixelMap[pixel.x+i][pixel.y+j],"red_ice")
					}
				} else if(pixelMap[pixel.x+i][pixel.y+j].element == "gravel") {
					if(Math.random() < crimRate) {
						changePixel(pixelMap[pixel.x+i][pixel.y+j],"crimgravel")
					}
				} else if(pixelMap[pixel.x+i][pixel.y+j].element == "water") {
					if(Math.random() < crimRate*3) {
						changePixel(pixelMap[pixel.x+i][pixel.y+j],"crimwater")
					}
				} else if(pixelMap[pixel.x+i][pixel.y+j].element == "snow") {
					if(Math.random() < crimRate) {
						changePixel(pixelMap[pixel.x+i][pixel.y+j],"crimsnow")
					}
				}
			}
		}
	}
	grassSpread(pixel,["dirt","mud"],"crimson_grass") //fuck evil biomes turning mud into dirt
}

elements.crimson_grass = {
    color: ["#e82535","#cc471f","#d6153c","#c20e29","#b81a2c"],
    behavior: [
        "XX|CR:vicious_mushroom%0.01|XX",
        "XX|XX|XX",
        "XX|M1|XX",
    ],
    tick: function(pixel) {
        if(!pixel.ft) {
            pixel.ft = 0
        }
        if(pixel.ft % 3 == 0) { 
			crimSpread(pixel)
        }
		pixel.ft++
    },
    tempHigh: 100,
    stateHigh: "dead_plant",
    tempLow: -2,
    stateLow: "frozen_plant",
    burn:50,
    burnTime:20,
    category:"life",
    state: "solid",
    density: 1400,
}

elements.crimstone = {
	color: ["#cb4444", "#953333", "#611c1c", "#b43434", "#752424"],
	behavior: behaviors.POWDER,
    tick: function(pixel) {
        if(!pixel.ft) {
            pixel.ft = 0
        }
        if(pixel.ft % 3 == 0) { 
			crimSpread(pixel)
        }
        pixel.ft++
    },
	tempHigh: 950,
	stateHigh: "magma",
	category: "land",
	state: "solid",
	density: 2550,
	hardness: 0.5,
	breakInto: ["crimsand","crimgravel"],
}

elements.crimsand = {
	color: ["#4c4c44", "#6c645c", "#5c544c", "#847c6c", "#24241c", "#4c4c44", "#6c645c", "#5c544c", "#847c6c", "#24241c", "#3c140c", "#842c24"],
	behavior: behaviors.POWDER,
    tick: function(pixel) {
        if(!pixel.ft) {
            pixel.ft = 0
        }
        if(pixel.ft % 3 == 0) { 
			crimSpread(pixel)
        }
        pixel.ft++
    },
	tempHigh: 1700,
	stateHigh: "molten_glass",
	category: "land",
	state: "solid",
	density: 1602,
}

elements.red_ice = {
	color: ["#f0ccc5", "#f7d8d2", "#eba39b"],
	behavior: behaviors.WALL,
    tick: function(pixel) {
        if(!pixel.ft) {
            pixel.ft = 0
        }
        if(pixel.ft % 3 == 0) { 
			crimSpread(pixel)
        }
        pixel.ft++
    },
	temp: 0,
	tempHigh: 5,
	stateHigh: "crimwater",
	category: "solids",
	state: "solid",
	density: 917,
	breakInto: "crimsnow",
}

elements.crimgravel = { //break from canon for crimstone breakInto
	color: ["#c4533f", "#de6957", "#b84639", "#cf4634", "#db6758", "#d17366", "#ab2b2b"],
	behavior: behaviors.POWDER,
    tick: function(pixel) {
        if(!pixel.ft) {
            pixel.ft = 0
        }
        if(pixel.ft % 3 == 0) { 
			crimSpread(pixel)
        }
        pixel.ft++
    },
	category:"land",
	tempHigh: 950,
	stateHigh: "magma",
	state: "solid",
	density: 1680,
	hardness: 0.2,
}

elements.crimwater = { //you shouldn't be able to purify ice by melting it
	color: "#e45c7c",
	behavior: behaviors.LIQUID,
    tick: function(pixel) {
        if(!pixel.ft) {
            pixel.ft = 0
        }
        if(pixel.ft % 3 == 0) { 
			crimSpread(pixel)
        }
        pixel.ft++
    },
	tempLow: 0,
	stateLow: "red_ice",
	viscosity: 1,
	category: "liquids",
	reactions: {
		"quicklime": { "elem1": null, "elem2": "slaked_lime", },
		"ruins": { "elem2": "rock", "chance": 0.00035 },
	},
	state: "liquid",
	density: 997,
	conduct: 0.02,
	stain: 0.1,
}

elements.crimsnow = { //BIG break from canon but you shouldn't be able to purify ice by grinding it either
	color: "#fce1e4",
	behavior: behaviors.POWDER,
    tick: function(pixel) {
        if(!pixel.ft) {
            pixel.ft = 0
        }
        if(pixel.ft % 3 == 0) { 
			crimSpread(pixel)
        }
        pixel.ft++
    },
	temp: 0,
	tempHigh: 5,
	stateHigh: "crimwater",
	category: "land",
	state: "solid",
	density: 100,
}

elements.vicious_mushroom = {
	color: "#e36554",
	behavior: behaviors.POWDER,
    tick: function(pixel) {
        if(!pixel.ft) {
            pixel.ft = 0
        }
        if(pixel.ft % 3 == 0) { 
			crimSpread(pixel)
        }
        pixel.ft++
    },
	category: "life",
	hidden: true,
	tempHigh: 225,
	stateHigh: "fire",
	burn: 10,
	burnTime: 65,
	state: "solid",
	density: 90.445,
}