-- Forge tutorial 7, "A point-and-click adventure":  a painted yard, a walk area drawn on it,
-- a walker sent by clicks, hotspots with verbs, an inventory, a guard with a dialogue, and a
-- door to a second painted room.  Starts from New game.
TUTORIAL = { number = 7, name = "07-adventure", tag = "TUTORIAL7" }
dofile("testScripts/tutorialDrive.singe")

local frames = 0
local stage  = 0
local game   = nil
local talked = false

tutorialBegin(nil)


local function lightType(name)
	local names = {}
	local from, to = 1, 1

	for typeName in pairs(FORGE.game.types) do
		names[#names + 1] = typeName
	end
	table.sort(names)
	for at, typeName in ipairs(names) do
		if typeName == FORGE.typeName then
			from = at
		end
		if typeName == name then
			to = at
		end
	end
	for _ = 1, math.abs(to - from) do
		key((to > from) and SCANCODE.DOWN or SCANCODE.UP)
	end
end


local function ruleGo(index, part)
	local guard = 0

	while ((FORGE.rule ~= index) or (FORGE.part ~= (part or 0))) and (guard < 60) do
		local past = (FORGE.rule > index) or ((FORGE.rule == index) and (FORGE.part > (part or 0)))

		key(past and SCANCODE.UP or SCANCODE.DOWN)
		guard = guard + 1
	end
end


local function kitType(name, file, anchor)
	key(SCANCODE.MAIN_2)
	key(SCANCODE.A)
	form("name", name)
	form("look", "sprite")
	form("look.file", file)
	if anchor then
		form("look.anchor", anchor)
	end
end


local function place(x, y)
	key(SCANCODE.MAIN_1)
	key(SCANCODE.A)
	local entry = forgeRoom().entities[FORGE.selected]

	forgePress(entry.x, entry.y)
	forgeDrag(x, y)
	forgeRelease()
end


local function rule(note, on, filters)
	key(SCANCODE.N)
	form("note", note)
	key(SCANCODE.E)
	pick(on)
	for _, pair in ipairs(filters or {}) do
		form(pair[1], pair[2])
	end
end


local function part(partKey, name, fields)
	key(partKey)
	pick(name)
	for _, pair in ipairs(fields or {}) do
		form(pair[1], pair[2])
	end
end


-- Up or down the dialogue outline to a row:  a dialogue by name, a node by name, or a choice by
-- its text, as a reader would with the arrows.
local function dialogueGo(level, name)
	local guard = 0

	local function here()
		for _, row in ipairs(forgeDialogueRows()) do
			local selected = (row.dialogue == FORGE.dialogue) and (row.node == FORGE.dnode) and ((row.choice or 0) == (FORGE.dchoice or 0)) and ((row.act or 0) == (FORGE.dact or 0))

			if selected and (row.level == level) then
				if (level == "dialogue") and (row.dialogue == name) then
					return true
				elseif (level == "node") and (row.node == name) then
					return true
				elseif (level == "choice") and row.label:find(name, 1, true) then
					return true
				end
			end
		end

		return false
	end

	-- Straight to the top, then down until the row is the one.
	while not here() and (guard < 40) do
		key(SCANCODE.UP)
		guard = guard + 1
		if FORGE.dnode == nil and level == "dialogue" and FORGE.dialogue == name then
			break
		end
	end
	guard = 0
	while not here() and (guard < 40) do
		key(SCANCODE.DOWN)
		guard = guard + 1
	end
	if not here() then
		debugPrint(string.format("%s FAIL the outline never reached %s %s", TUTORIAL.tag, level, name))
	end
end


-- A walk area:  V, a press on each corner, V again.
-- The panel steps aside on its own while the corners are pressed.
local function walkArea(corners)
	key(SCANCODE.MAIN_1)
	forgeSelect(nil)
	key(SCANCODE.V)
	for _, corner in ipairs(corners) do
		forgePress(corner[1], corner[2])
	end
	key(SCANCODE.V)
end


local function step()
	if stage == 1 then
		key(SCANCODE.MAIN_1)
		selectEntity("hero")
		key(SCANCODE.DELETE)
		selectEntity("ground")
		key(SCANCODE.DELETE)
		key(SCANCODE.MAIN_2)
		lightType("hero")
		key(SCANCODE.DELETE)
		lightType("ground")
		key(SCANCODE.DELETE)
		key(SCANCODE.MAIN_3)
		ruleGo(1, 0)
		key(SCANCODE.DELETE)
		key(SCANCODE.DELETE)
		key(SCANCODE.DELETE)
		key(SCANCODE.MAIN_1)
		forgeSelect(nil)
		form("title", "The Yard")
		form("vars", "score=0, allowed=false")
		form("verbs", "walk, look, take, use, open, talk")
		form("layers", "overlay")
		form("name", "yard")
		form("depthSort", "true")
		form("scaleBy", "300:0.6, 460:1.0")

	elseif stage == 2 then
		-- The painting, the walk area on its floor, and the walker.
		kitType("backdrop", "yard.png")
		place(360, 240)
		walkArea({ { 60, 320 }, { 660, 320 }, { 700, 460 }, { 40, 460 } })
		forgePanelShow(false)
		tutorialShot("walkArea")
		forgePanelShow(true)
		kitType("hero", "hero.png", "feet")
		form("look.frames", 8)
		form("behaviours", "walker, frames")
		form("walker.speed", 160)
		form("frames.fps", 10)
		form("frames.states", "idle=1-1, walk=2-5")
		place(150, 440)

	elseif stage == 3 then
		-- The things a verb can be used on.
		kitType("door", "door.png", "feet")
		form("behaviours", "hotspot")
		form("hotspot.name", "door")
		form("hotspot.walkX", 590)
		form("hotspot.walkY", 330)
		place(590, 300)
		kitType("key", "key.png")
		form("behaviours", "hotspot")
		form("hotspot.name", "key")
		form("hotspot.walkX", 200)
		form("hotspot.walkY", 400)
		place(200, 380)
		kitType("guard", "hero.png", "feet")
		form("look.frames", 8)
		form("look.faces", "left")
		form("behaviours", "hotspot")
		form("hotspot.name", "guard")
		form("hotspot.walkX", 480)
		form("hotspot.walkY", 360)
		place(520, 340)
		tutorialShot("hotspots")

	elseif stage == 4 then
		-- The guard's dialogue.
		key(SCANCODE.MAIN_5)
		key(SCANCODE.A)
		form("name", "guard")
		key(SCANCODE.DOWN)
		form("who", "Guard")
		form("text", "Nobody passes.")
		key(SCANCODE.A)
		form("text", "Why not?")
		form("next", "why")
		key(SCANCODE.A)
		form("text", "Fine.")
		dialogueGo("dialogue", "guard")
		key(SCANCODE.A)
		form("name", "why")
		form("who", "Guard")
		form("text", "The door is locked, and I have no key.")
		key(SCANCODE.A)
		form("text", "I have a key.")
		form("when", 'has("key")')
		form("next", "ok")
		key(SCANCODE.T)
		pick("setVar")
		form("name", "allowed")
		form("value", "true")
		clear("entity")
		dialogueGo("node", "why")
		key(SCANCODE.A)
		form("text", "I see.")
		dialogueGo("dialogue", "guard")
		key(SCANCODE.A)
		form("name", "ok")
		form("who", "Guard")
		form("text", "Then go ahead.")
		tutorialShot("dialogue")

	elseif stage == 5 then
		key(SCANCODE.MAIN_3)
		rule("A click on the floor walks there", "pressed", { { "switch", "SWITCH_BUTTON3" }, { "interrupt", "true" } })
		part(SCANCODE.T, "walkToPointer", { { "entity", "hero" }, { "player", 1 } })
		rule("Look at anything", "verb", { { "verb", "look" } })
		part(SCANCODE.T, "say", { { "text", '"It is a " .. event.target .. "."' }, { "seconds", 1 } })
		rule("Take the key", "verb", { { "verb", "take" }, { "target", "key" } })
		part(SCANCODE.T, "walkToHotspot", { { "entity", "hero" } })
		part(SCANCODE.T, "give", { { "item", "key" } })
		part(SCANCODE.T, "addScore", { { "amount", 1 } })
		part(SCANCODE.T, "destroy", {})
		rule("Talk to the guard", "verb", { { "verb", "talk" }, { "target", "guard" } })
		part(SCANCODE.T, "walkToHotspot", { { "entity", "hero" } })
		part(SCANCODE.T, "face", { { "entity", "hero" }, { "target", "self" } })
		part(SCANCODE.T, "talk", { { "dialogue", "guard" } })
		tutorialShot("verbRules")

	elseif stage == 6 then
		rule("The door, while the guard objects", "verb", { { "verb", "open" }, { "target", "door" } })
		part(SCANCODE.C, "test", { { "expr", "not allowed" } })
		part(SCANCODE.T, "say", { { "text", '"The guard shakes his head."' }, { "seconds", 1 } })
		rule("The door opens", "verb", { { "verb", "open" }, { "target", "door" }, { "controls", "false" } })
		part(SCANCODE.C, "test", { { "expr", "allowed" } })
		part(SCANCODE.T, "walkToHotspot", { { "entity", "hero" } })
		part(SCANCODE.T, "playSound", { { "file", "door.wav" } })
		part(SCANCODE.T, "fade", { { "seconds", 0.5 }, { "out", "true" } })
		part(SCANCODE.T, "goTo", { { "room", "hall" }, { "entity", "hero" }, { "x", 120 }, { "y", 420 } })
		part(SCANCODE.T, "fade", { { "seconds", 0.5 }, { "out", "false" } })
		part(SCANCODE.T, "addScore", { { "amount", 1 } })
		rule("Anything else", "verb", {})
		part(SCANCODE.T, "say", { { "text", '"That does not work."' }, { "seconds", 1 } })
		rule("The verb keys", "pressed", { { "key", "L" } })
		part(SCANCODE.T, "setVerb", { { "verb", "look" } })
		rule("Take", "pressed", { { "key", "T" } })
		part(SCANCODE.T, "setVerb", { { "verb", "take" } })
		rule("Open", "pressed", { { "key", "O" } })
		part(SCANCODE.T, "setVerb", { { "verb", "open" } })
		rule("Talk", "pressed", { { "key", "K" } })
		part(SCANCODE.T, "setVerb", { { "verb", "talk" } })
		ruleGo(1, 1)
		form("text", '(sentence or "") .. "    score " .. score')

	elseif stage == 7 then
		-- The hall:  a second painting, its floor, and the readout.
		key(SCANCODE.MAIN_1)
		key(SCANCODE.N)
		form("name", "hall")
		form("depthSort", "true")
		key(SCANCODE.MAIN_2)
		lightType("backdrop")
		place(360, 240)
		walkArea({ { 40, 300 }, { 680, 300 }, { 700, 460 }, { 40, 460 } })
		key(SCANCODE.MAIN_1)
		selectEntity("backdrop")
		form("type", "backdrop")
		key(SCANCODE.MAIN_2)
		lightType("readout")
		place(12, 12)
		tutorialShot("hall")

	elseif stage == 8 then
		key(SCANCODE.S)
		local built = tutorialEnd()
		local mine  = onOverlayUpdate

		dofile(built)
		game            = onOverlayUpdate
		onOverlayUpdate = mine

	elseif stage == 10 then
		-- Take the key:  the take verb on the key hotspot.
		authorSetVerb("take")
		authorSetPointer(1, 200, 380)
		authorSwitchDown(SWITCH_BUTTON3)
		authorSwitchUp(SWITCH_BUTTON3)
	elseif stage == 16 then
		tutorialShot("playing")
		local hx, hy = authorPosition(authorEntity("hero"))

		debugPrint(string.format("%s the key is %s, the score %s, the hero at %.0f, %.0f", TUTORIAL.tag, authorHas("key") and "taken" or "still there", tostring(AUTHOR_VARS.score), hx, hy))
		if not authorHas("key") then
			debugPrint(TUTORIAL.tag .. " FAIL the take verb on the key should walk there and take it")
		end
	elseif stage == 17 then
		debugPrint(TUTORIAL.tag .. " RESULT done")
		singeQuit()
	end
end


function onOverlayUpdate()
	frames = frames + 1
	if frames % 12 == 0 and stage < 17 then
		stage = stage + 1
		step()
	end
	if game ~= nil then
		return game()
	end
	forgeDraw(nil, nil)

	return OVERLAY_UPDATED
end