Mothback/code/spawn.lua

LoadedObjects.Spawns = {}

function addSpawn(archetype, ...)
	local o = {
		archetype = archetype,
		args = {...}
	}
	table.insert(LoadedObjects.Spawns, o)
end

function activateSpawns()
	for _, spawn in pairs(LoadedObjects.Spawns) do
		spawn.archetype:new(unpack(spawn.args))
	end
end

function deselectSpawns()
	for _, spawn in pairs(LoadedObjects.Spawns) do
		spawn.selected = nil
	end
end

function selectSpawns(x,y)
	for _, spawn in pairs(LoadedObjects.Spawns) do

		local offset_x, offset_y = spawn.archetype.display:getCenteredOffset()
		local left = spawn.args[1] - Camera.pos.x - offset_x
		local top = spawn.args[2] - Camera.pos.y - offset_y
		local right = spawn.args[1] - Camera.pos.x + offset_x
		local bottom = spawn.args[2] - Camera.pos.y + offset_y
		local x = (x / game.scale)
		local y = (y / game.scale)
		if x >= left and y >= top and x <= right and y <= bottom then
			spawn.selected = true
		end

		if spawn.selected then
			love.graphics.setColor(0,1,1,1)
		else
			love.graphics.setColor(0,1,0,1)
		end

		love.graphics.rectangle("fill",left-2,top-2,4,4)
		love.graphics.rectangle("fill",right-2,bottom-2,4,4)
		love.graphics.setColor(1,1,1,1)
	end
end

function moveSpawns(x,y)
	for _, spawn in pairs(LoadedObjects.Spawns) do
		if spawn.selected then
			spawn.args[1] = math.floor(x/game.scale)+Camera.pos.x
			spawn.args[2] = math.floor(y/game.scale)+Camera.pos.y
		end
	end
end

function promptSpawnArchetype()
	if Prompt.active_prompt then
		Prompt.active_prompt.canceled = true
	end
	for _, spawn in pairs(LoadedObjects.Spawns) do
		if spawn.selected then
			local offset_x, offset_y = spawn.archetype.display:getCenteredOffset()
			local text = ""
			for i=1, #spawn.args do
				if i > 1 then text = text .. ", " end
				text = text .. tostring(spawn.args[i])
			end
			local prompt = Prompt:new({
				name = "archetype",
				input = spawn.archetype.type,
				spawn = spawn,
				func = function(prompt)
					print("return "..prompt.input)
					local f = loadstring("return "..prompt.input)
					if f ~= nil then
						local succ, arch = pcall(f)
						print("archetype changed --",succ)
						print("from: ", spawn.archetype.type)
						if not succ
						or type(arch) ~= "table"
						or type(arch.type) ~= "string"
						then
							arch = spawn.archetype
						end
						print("to: ", arch.type)
						spawn.archetype = arch
					else
						print("invalid input for prompt "..prompt.name)
					end
				end,
				})
				prompt.pos.x = (spawn.args[1]-4)*game.scale - Camera.pos.x - offset_x
				prompt.pos.y = (spawn.args[2]-20)*game.scale - Camera.pos.y - offset_y

			prompt:activate()
		end
	end
end

function checkArgsAreInvalid(args)
	for _, arg in pairs(args) do
		if arg == nil then return true end
	end
end

function promptSpawnArgs()
	if Prompt.active_prompt then
		Prompt.active_prompt.canceled = true
	end
	for _, spawn in pairs(LoadedObjects.Spawns) do
		if spawn.selected then
			local offset_x, offset_y = spawn.archetype.display:getCenteredOffset()
			local text = ""
			for i=1, #spawn.args do
				if i > 1 then text = text .. ", " end
				text = text .. tostring(spawn.args[i])
			end
			local prompt = Prompt:new({
				name = "args",
				input = text,
				func = function(prompt)
					local f = loadstring("return {"..prompt.input.."}")
					if f ~= nil then
						local succ, args = pcall(f)
						print("args changed --",succ)
						print("from: ", unpack(args))
						if not succ
						or checkArgsAreInvalid(args)
						then
							args = spawn.args
						end
						print("to: ", unpack(args))
						spawn.args = args
					else
						print("invalid input for prompt "..prompt.name)
					end
				end,
				})
				prompt.pos.x = (spawn.args[1]-4)*game.scale - Camera.pos.x - offset_x
				prompt.pos.y = (spawn.args[2]-4)*game.scale - Camera.pos.y - offset_y
			prompt:activate()
		end
	end
end

function drawSpawns()
	for _, spawn in pairs(LoadedObjects.Spawns) do
		local offset_x, offset_y = spawn.archetype.display:getCenteredOffset()
		love.graphics.setColor(1,1,1,1)
		spawn.archetype.display:draw(
			spawn.args[1] - Camera.pos.x - offset_x,
			spawn.args[2] - Camera.pos.y - offset_y
		)


		if spawn.selected then
			love.graphics.setColor(0,1,1,1)
		else
			love.graphics.setColor(0,1,0,1)
		end

		love.graphics.rectangle(
			"line",
			spawn.args[1] - Camera.pos.x - offset_x,
			spawn.args[2] - Camera.pos.y - offset_y,
			spawn.args[1] - Camera.pos.x + offset_x - (spawn.args[1] - Camera.pos.x - offset_x),
			spawn.args[2] - Camera.pos.y + offset_y - (spawn.args[2] - Camera.pos.y - offset_y)
		)

		if spawn.selected then
			local text = spawn.archetype.type.."\n["..spawn.args[1]..","..spawn.args[2].."]\n"
			for i=3, #spawn.args do
				if i > 3 then text = text .. ", " end
				text = text .. tostring(spawn.args[i])
			end
			love.graphics.print(
				text,
				spawn.args[1] - Camera.pos.x + 20,
				spawn.args[2] - Camera.pos.y
			)
		end
	end
end