pc_tiantian/core/luaScript/Map/MapDrawer.lua

return function(Map)
	-- 创建地图菱形网格
	function Map:createGridNode()
		local vertexFormat = {};
		table.insert(vertexFormat , {size = 3 , usage = cc.VertexFormatUsage.POSITION});
		table.insert(vertexFormat , {size = 4 , usage = cc.VertexFormatUsage.COLOR});
		local vertices = ManualVertices:new(vertexFormat);
		vertices:setColor(cc.c4f(0,0,1,0.5));
		-- 画菱形

		-- 画横轴
		for x = 0, self.TileCountX do
			local begin_ = self:getPixelPosition(x,0);
			local end_ = self:getPixelPosition(x,self.TileCountY);
			vertices:drawLine(cc.vec3(begin_.x , 0 , begin_.y) , cc.vec3(end_.x , 0 , end_.y))
		end
		-- 画纵轴
		for y = 0, self.TileCountY do
			local begin_ = self:getPixelPosition(0,y);
			local end_ = self:getPixelPosition(self.TileCountX,y);
			vertices:drawLine(cc.vec3(begin_.x , 0 , begin_.y) , cc.vec3(end_.x , 0 , end_.y))
		end

		-- 画一个矩形
		vertices:drawLine(cc.vec3(0,0,0), cc.vec3(self.MapWidth,0,0));
		vertices:drawLine(cc.vec3(self.MapWidth,0,0), cc.vec3(self.MapWidth,0, -self.MapHeight));
		vertices:drawLine(cc.vec3(self.MapWidth,0, -self.MapHeight), cc.vec3(0,0,-self.MapHeight));
		vertices:drawLine(cc.vec3(0,0,0), cc.vec3(0,0,-self.MapHeight));

		local mesh = cc.Mesh:createMesh(vertexFormat , vertices:getVertexCount());
		mesh:setPrimitiveType(cc.PrimitiveType.LINES);
		mesh:setVertexData(vertices:getVertices() , 0 , vertices:getVertexCount());
		mesh:setBoundingBox(vertices:getBoundingBox());

		local model = cc.Model:create(mesh);
		local material = cc.Material:create("preload/shaders/ccDefault.material#ShaderPositionColor3D");
		material:setParameterAutoBinding("CC_MVPMatrix" , "WORLD_VIEW_PROJECTION_MATRIX");
		model:setMaterialPointer(material);
		
		local node = cc.Node3D:create();
		node:addComponent(model);

		return node;
	end

	-- 创建网格上的文本
	function Map:createTextNode()
		local node = cc.Node:create();
		-- 横轴
		for x = 0, self.TileCountX do
			-- 纵轴
			for y = 0, self.TileCountY do
				local pos = self:getPixelPosition(x,y);
				local debugLabel = cc.Text:createNode();
				debugLabel:setDefaults();
				local config = debugLabel:getFontConfig();
				config.fontSize = 12;
				debugLabel:setFontConfig(config);

				debugLabel:setAnchorPoint(cc.p(0.5,0.5));
				debugLabel:setTranslation(pos.x , 0 , pos.y);
				debugLabel:setEulerRotation(-90,0,0);
				debugLabel:setScale(0.03);
				-- TODO这里需要显示逻辑坐标就可以了
				debugLabel:setText(tostring(x) .. "," .. tostring(y));
				node:addChild(debugLabel);
			end
		end
		return node;
	end

	-- 创建障碍块和可见区域
	function Map:createObstacleNode()
		local node = cc.Node3D:create();
		-- 画障碍块
		local vertexFormat = {};
		table.insert(vertexFormat , {size = 3 , usage = cc.VertexFormatUsage.POSITION});
		table.insert(vertexFormat , {size = 4 , usage = cc.VertexFormatUsage.COLOR});

		local material = cc.Material:create("preload/shaders/ccDefault.material#ShaderPositionColor3D");
		material:setParameterAutoBinding("CC_MVPMatrix" , "WORLD_VIEW_PROJECTION_MATRIX");
		local mesh = cc.MeshBatch:create(vertexFormat , cc.PrimitiveType.TRIANGLES , material , false);
		node:addComponent(mesh);

		local function drawOb(vertices , x , y)
			local leftTop = self:getPixelPosition(x,y);
			local rightTop = self:getPixelPosition(x + 1,y);
			local leftBottom = self:getPixelPosition(x,y + 1);
			local rightBottom = self:getPixelPosition(x + 1,y + 1);
			vertices:drawRect(cc.vec3(leftTop.x , 0 , leftTop.y)
				, cc.vec3(rightTop.x , 0 , rightTop.y)
				, cc.vec3(leftBottom.x , 0 , leftBottom.y)
				, cc.vec3(rightBottom.x , 0 , rightBottom.y));	
		end

		-- 更新障碍块的顶点信息
		local function updateObstacle()
			local vertices = ManualVertices:new(vertexFormat);
			local x , y;
			-- 画障碍块
			for y = 0 , self.TileCountY - 1 do
				for x = 0 , self.TileCountX - 1 do
					if self.obstacles:isBlock(x,y) then
						vertices:setColor(cc.c4f(1,1,0,1));
					else
						vertices:setColor(cc.c4f(0,0,0,0));
					end
					drawOb(vertices , x , y);
				end
			end
			mesh:start();
			mesh:add(vertices:getVertices() , vertices:getVertexCount());
			mesh:finish();
		end

		-- 更新一个障碍块
		local function updateOne(x , y , val)
			local vertices = ManualVertices:new(vertexFormat);
			if val ~= Map.ObstacleType.ObstacleNone then
				vertices:setColor(cc.c4f(1,1,0,1));
			else
				vertices:setColor(cc.c4f(0,0,0,0));
			end
			drawOb(vertices , x , y);
			mesh:updateVertex((self.TileCountX * y + x) * vertices:getVertexCount() , vertices:getVertexCount() , vertices:getVertices());
		end

		self.ObstacleChanged = updateOne;

		updateObstacle();
		return node;
	end
end