Sample tool definition

mod.js

game.modManager.registerEvent({
	"type": "custom",
	"properties": {"foo": game.modManager.StringType }
});

game.addEventListener("custom", function(event) { console.log(event.get("foo")); });
game.eventManager.propogateEvent("custom", {"foo": "bar"});

var mm = game.modManager; 

var ItemComponent = mm.registerPrototype({
    "id": "item",
    "properties": {
        "name":  game.modManager.stringType,
        "renderWithIcon": game.modManager.booleanType,
        "stack_size": game.modManager.numberType,
    	"texture": game.modManager.textureType
    }
});

var Material = mm.registerPrototype({
	"id": "material",
	"properties": {
		"color": game.modManager.colorType,
		"hardness": game.modManager.numberType
	}
});

var Metal = mm.registerPrototype(Material, {
	"id": "metal"
});

console.log(Metal.type);
console.log(game.modManager.getPrototype("metal").type);

var MetalIngot = mm.registerPrototype(ItemComponent, {
	"id": "metal_ingot",
	"name": "${metal.name} Ingot",
    "renderWithIcon": true,
    "stack_size": 64,
	"properties": {
		"material": Metal.type
	},
	"events": {
		"init": function(event) {
			var $this = event.target;  
			$this.texture = game.colorizeTexture("ingot.png", $this.metal.color);
		}
	}
});

Iron = mm.registerPrototype(Metal, {
	"id": "iron",
	"name": "Iron",
	"color": "#E6E7E8",
	"hardness": 4,
	"durability": 5
});

Copper = mm.registerPrototype(Metal, {
	"id": "copper",
	"name": "Copper",
	"color": "#B87333",
	"hardness": 3,
	"durability": 5
});

var Tool = mm.registerPrototype(ItemComponent, {
	"id": "tool",
	"properties": {
        "material": Material.type,
        "durability": game.modManager.numberType,
        "bonus_target": game.modManager.functionType,
        "bonus": function() {
        	return this.hardness;
        },
	},
	"events": {
		"init": function(event) {
			var $this= event.target;  
			$this.durability = Math.pow($this.material.durability, 3);
		},
		"use": function(event) {
			var $this = event.equipped;  
			if ($this.bonus_target(event.target)) {
				event.action.time /= $this.bonus;
			} 
		},
		"harvest": function(event) {
			var $this = event.equipped;  
			$this.durability--;
			if ($this.durability == 0) {
				$this.dispatchEvent("break");
			}
		},
		"break": function(event) {
			event.target.destroy();  
		},
		
	}
});


var Axe = game.modManager.registerPrototype(Tool, {
    "id" : "axe",

    "components": {
        "item": {
            "name" : "${material.name} Axe",
            "renderWithIcon": true,
            "stack_size": 1,
        },
        "craftable": {
            "recipe": "$material under $material over $material over blah",
        },
        "tool": {
                "bonus_target": function(obj) {
                	return obj.hasComponent(game.modManager.registerPrototype("vanilla.timber"))
                }
        }
    },
	"events": {
		"init": function(event) {
			var $this = event.target;  
			$this.texture = game.colorizeTexture("axe.png", $this.material.color);
		}
	}
});

CopperIngot = MetalIngot.registerPrototype({"id": "copper_ingot", "material": Copper});
IronIngot = MetalIngot.registerPrototype({"id": "iron_ingot", "material": Iron});
CopperAxe = Axe.registerPrototype({"id": "copper_axe", "material": Copper});
IronAxe = Axe.registerPrototype({"id": "iron_axe", "material": Iron});


var MetalOre = game.modManager.registerPrototype({
    "id": "metal_ore",
    "listeners": {
        "harvest": function(event) {
            game.addItem(this.getProperty("drop"), event.location);
            event.block.location.world.dropItem(this, event.block.location);
        },
    },
    "properties": { 
    	"smelt_to": "metal_ingot"
    },
    "components": { "item": {} }
});





console.log("The registered components are: " + [c.id for each (c in game.modManager.components)]);

console.log("The color of Copper is : " + game.modManager.getComponent("copper").getPropertyValue("color"));