-- 填充障碍块工具
local ObstacleTool = class("ObstacleTool")

local ToolSize = 0;

function ObstacleTool:MouseDown(button , x , y)
	-- 按下ALT控制相机
	if app.cs.getModifierKeys() == Keys.Alt then return end

	-- 转换坐标
	local worldPos = app.cameraController:convertScreenToWorldPos(x, y);
	-- 将像素坐标转换成逻辑坐标
	local logicalPos = app.editor.Map:getTilePosition(worldPos.x, worldPos.z);
	-- 左键按下添加障碍快
	if (button == MouseButtons.Left) then	
		for x = -ToolSize , ToolSize do
			for y = -ToolSize , ToolSize do
				app.editor.Map:addObstacle(logicalPos.x + x, logicalPos.y + y);
			end
		end
	end
	-- 右键按下删除障碍块
	if (button == MouseButtons.Right) then
		for x = -ToolSize , ToolSize do
			for y = -ToolSize , ToolSize do
				app.editor.Map:removeObstacle(logicalPos.x + x, logicalPos.y + y);
			end
		end
	end

	-- 中间填充
	if button == MouseButtons.Middle then
		local map = app.editor.Map;
		local function FillShape(x, y)
			if not map:isInMap(x , y) then
				return
			end
			if not map:isObstacle(x,y) then
				map:addObstacle(x, y);
				FillShape(x+1,   y);
				FillShape(x-1,   y);
				FillShape(x,   y+1);
				FillShape(x,   y-1);
			end
		end
		FillShape(logicalPos.x , logicalPos.y);
	end
end

function ObstacleTool:MouseMove(button, x , y)
	-- 按下ALT控制相机
	if app.cs.getModifierKeys() == Keys.Alt then return end

	
	-- 转换坐标
	local worldPos = app.cameraController:convertScreenToWorldPos(x, y);
	-- 将像素坐标转换成逻辑坐标
	local logicalPos = app.editor.Map:getTilePosition(worldPos.x, worldPos.z);
	-- 左键按下添加障碍快
	if (button == MouseButtons.Left) then	
		for x = -ToolSize , ToolSize do
			for y = -ToolSize , ToolSize do
				app.editor.Map:addObstacle(logicalPos.x + x, logicalPos.y + y);
			end
		end
	end
	-- 右键按下删除障碍块
	if (button == MouseButtons.Right) then
		for x = -ToolSize , ToolSize do
			for y = -ToolSize , ToolSize do
				app.editor.Map:removeObstacle(logicalPos.x + x, logicalPos.y + y);
			end
		end
	end
end


function ObstacleTool:DialogKey(Control, Alt, Shift, KeyCode)
	if KeyCode == Keys.Up then
		ToolSize = ToolSize + 1;
	elseif KeyCode == Keys.Down then
		ToolSize = ToolSize - 1;
	elseif KeyCode == Keys.Left then
		ToolSize = ToolSize - 10;
	elseif KeyCode == Keys.Right then
		ToolSize = ToolSize + 10;
	end
	if ToolSize > 100 then
		ToolSize = 100;
	elseif ToolSize < 0 then
		ToolSize = 0;
	end 
	ToolSize = math.ceil(ToolSize);
end


function ObstacleTool:MouseUp(button, x, y)
	
end

return ObstacleTool;