// Client_RPG - top-down camera, click-to-move, and RPG windows for GameMode_RPG.
exec("./ui.cs");
// The server probes with RPG_Probe; reply with serverCmdRPG_Hello(2) to play.

$RPGClient::Version = 2;
$RPGClient::Active = 0;
$RPGClient::Yaw = 0;
$RPGClient::Dist = 14;
$RPGClient::HelloPending = 0;
$RPGClient::HelloLast = "";

function RPGClient_NormPos(%ctrl, %pos)
{
	if (!isObject(%ctrl))
	{
		return "0.5 0.5";
	}
	%ext = %ctrl.getExtent();
	%w = getWord(%ext, 0);
	%h = getWord(%ext, 1);
	if (%w < 1)
	{
		%w = 1;
	}
	if (%h < 1)
	{
		%h = 1;
	}
	%x = getWord(%pos, 0) / %w;
	%y = 1 - getWord(%pos, 1) / %h;
	if (%x < 0)
	{
		%x = 0;
	}
	if (%x > 1)
	{
		%x = 1;
	}
	if (%y < 0)
	{
		%y = 0;
	}
	if (%y > 1)
	{
		%y = 1;
	}
	return %x SPC %y;
}

function RPGClient_Aspect()
{
	if (!isObject(Canvas))
	{
		return 1.333;
	}
	%ext = Canvas.getExtent();
	%w = getWord(%ext, 0);
	%h = getWord(%ext, 1);
	return %h > 0 ? %w / %h : 1.333;
}

function RPGClient_SendClick(%button, %pos)
{
	if (!isObject(ServerConnection))
	{
		return;
	}
	%norm = RPGClient_NormPos(RPGClient_Mouse, %pos);
	commandToServer('RPG_Click', %button, getWord(%norm, 0), getWord(%norm, 1), RPGClient_Aspect());
}

function RPGClient_Mouse::onMouseDown(%this, %mod, %pos, %clicks)
{
	if (!$RPGClient::Active)
	{
		return;
	}
	RPGClient_SendClick(0, %pos);
}

function RPGClient_Mouse::onRightMouseDown(%this, %mod, %pos, %clicks)
{
	if (!$RPGClient::Active)
	{
		return;
	}
	RPGClient_SendClick(1, %pos);
}

function RPGClient_EnableOverlay()
{
	if (!isObject(PlayGui) || isObject(RPGClient_Mouse))
	{
		return;
	}
	new GuiMouseEventCtrl(RPGClient_Mouse)
	{
		className = "RPGClient_Mouse";
		horizSizing = "width";
		vertSizing = "height";
		position = "0 0";
		extent = "640 480";
		profile = "GuiDefaultProfile";
		visible = "1";
		enabled = "1";
	};
	PlayGui.add(RPGClient_Mouse);
	PlayGui.pushToBack(RPGClient_Mouse);
	if (isObject(RPGClient_KeyMap))
	{
		RPGClient_KeyMap.delete();
	}
	new ActionMap(RPGClient_KeyMap);
	RPGClient_KeyMap.bind(keyboard0, a, RPGClient_YawLeft);
	RPGClient_KeyMap.bind(keyboard0, d, RPGClient_YawRight);
	RPGClient_KeyMap.bind(keyboard0, left, RPGClient_YawLeft);
	RPGClient_KeyMap.bind(keyboard0, right, RPGClient_YawRight);
	RPGClient_KeyMap.bind(keyboard0, "pageup", RPGClient_ZoomIn);
	RPGClient_KeyMap.bind(keyboard0, "pagedown", RPGClient_ZoomOut);
	RPGClient_KeyMap.bind(keyboard0, equals, RPGClient_ZoomIn);
	RPGClient_KeyMap.bind(keyboard0, minus, RPGClient_ZoomOut);
	Canvas.pushDialog(RPGClient_Mouse, 0);
	RPGClient_KeyMap.push();
	if (isObject(PlayGui))
	{
		PlayGui.killToolHud();
	}
}

function RPGClient_DisableOverlay()
{
	if (isObject(RPGClient_KeyMap))
	{
		RPGClient_KeyMap.pop();
	}
	if (isObject(RPGClient_Mouse))
	{
		Canvas.popDialog(RPGClient_Mouse);
		RPGClient_Mouse.delete();
	}
	$RPGClient::Active = 0;
}

function RPGClient_ApplyCamera()
{
	if (!isObject(localClientConnection) || !isObject(localClientConnection.player))
	{
		return;
	}
	%body = localClientConnection.player;
	%cam = localClientConnection.getControlObject();
	if (!isObject(%cam) || %cam.getClassName() !$= "Camera")
	{
		%cam = localClientConnection.camera;
	}
	if (!isObject(%cam))
	{
		return;
	}
	localClientConnection.setControlObject(%cam);
	%rot = "0 0" SPC mSin($RPGClient::Yaw / 2) SPC mCos($RPGClient::Yaw / 2);
	%cam.setOrbitMode(%body, %body.getTransform(), 4, 32, $RPGClient::Dist);
	%cam.thirdPersonOnly = 1;
	commandToServer('RPG_CamSync', $RPGClient::Yaw, $RPGClient::Dist);
}

function RPGClient_YawLeft(%val)
{
	if (!$RPGClient::Active || %val == 0)
	{
		return;
	}
	$RPGClient::Yaw = $RPGClient::Yaw - 0.06;
	RPGClient_ApplyCamera();
}

function RPGClient_YawRight(%val)
{
	if (!$RPGClient::Active || %val == 0)
	{
		return;
	}
	$RPGClient::Yaw = $RPGClient::Yaw + 0.06;
	RPGClient_ApplyCamera();
}

function RPGClient_ZoomIn(%val)
{
	if (!$RPGClient::Active || %val == 0)
	{
		return;
	}
	$RPGClient::Dist = getMax(6, $RPGClient::Dist - 0.6);
	RPGClient_ApplyCamera();
}

function RPGClient_ZoomOut(%val)
{
	if (!$RPGClient::Active || %val == 0)
	{
		return;
	}
	$RPGClient::Dist = getMin(32, $RPGClient::Dist + 0.6);
	RPGClient_ApplyCamera();
}

function RPGClient_CanSendCmd()
{
	return isObject(ServerConnection) || isObject(localClientConnection);
}

function RPGClient_SendHello()
{
	if ($RPGClient::Server)
	{
		return;
	}
	if (!RPGClient_CanSendCmd())
	{
		return;
	}
	%now = getSimTime();
	if ($RPGClient::HelloLast !$= "" && %now - $RPGClient::HelloLast < 900)
	{
		return;
	}
	$RPGClient::HelloLast = %now;
	commandToServer('RPG_Hello', $RPGClient::Version);
	commandToServer('RPGHello', $RPGClient::Version);
	commandToServer('message', "/rpg clienthello " @ $RPGClient::Version);
}

function clientCmdRPG_Probe()
{
	RPGClient_SendHello();
}

function clientCmdRPG_Welcome(%serverProto, %accepted)
{
	if (%accepted && %serverProto == $RPGClient::Version)
	{
		$RPGClient::Server = 1;
		$RPGClient::HelloPending = 0;
	}
	else if (!%accepted)
	{
		echo("Client_RPG: server rejected handshake (server proto " @ %serverProto @ ")");
		schedule(1500, 0, RPGClient_SendHello);
	}
}

function clientCmdRPG_TopDown(%on, %yaw, %dist)
{
	if (%on)
	{
		$RPGClient::Active = 1;
		$RPGClient::Yaw = %yaw;
		$RPGClient::Dist = %dist > 0 ? %dist : 14;
		RPGClient_EnableOverlay();
		RPGClient_BindKeys();
		schedule(50, 0, RPGClient_ApplyCamera);
		schedule(200, 0, RPGClient_ApplyCamera);
	}
	else
	{
		RPGClient_DisableOverlay();
		RPGClient_UnbindKeys();
	}
}

function clientCmdRPG_Hud(%hp, %maxHp, %silver, %load, %cap, %skillId, %skillValue, %blocking, %tHp, %tMax)
{
	RPGClient_Hud_Update(%hp, %maxHp, %silver, %load, %cap, %skillId, %skillValue, %tHp, %tMax);
}

function clientCmdRPG_HudOff()
{
	RPGClient_Hud_Hide();
}

function clientCmdRPG_Notify(%text, %sec)
{
	if (%text !$= "")
	{
		RPGClient_Notify_Show(%text, %sec);
	}
}

function clientCmdRPG_Dialog(%title, %body, %sec)
{
	RPGClient_Dialog_Show(%title, %body, %sec);
}

function clientCmdRPG_ListBegin(%title, %page, %pages)
{
	RPGClient_List_Begin(%title, %page, %pages);
}

function clientCmdRPG_ListRow(%row)
{
	RPGClient_List_Row(%row);
}

function clientCmdRPG_ListEnd()
{
	RPGClient_List_End();
}

// --- HUD / list / dialog (Phase 4): thin windows on PlayGui ---
function RPGClient_Hud_Ensure()
{
	if (isObject(RPGClient_Hud))
	{
		return;
	}
	new GuiTextCtrl(RPGClient_Hud)
	{
		horizSizing = "width";
		vertSizing = "top";
		position = "8 8";
		extent = "600 24";
		profile = "ChatHudMessageProfile";
		text = "";
	};
	PlayGui.add(RPGClient_Hud);
}

function RPGClient_Hud_Update(%hp, %maxHp, %silver, %load, %cap, %skillId, %skillValue, %tHp, %tMax)
{
	if (!$RPGClient::Active)
	{
		return;
	}
	RPGClient_Hud_Ensure();
	%t = "";
	if (%tMax > 0)
	{
		%t = " | Target " @ %tHp @ "/" @ %tMax;
	}
	RPGClient_Hud.setText("HP " @ %hp @ "/" @ %maxHp @ %t @ " | " @ %silver @ " silver | load " @ %load @ "/" @ %cap @ " | " @ %skillId @ " " @ %skillValue);
}

function RPGClient_Hud_Hide()
{
	if (isObject(RPGClient_Hud))
	{
		RPGClient_Hud.setText("");
	}
}

function RPGClient_Notify_Show(%text, %sec)
{
	RPGClient_Hud_Ensure();
	RPGClient_Hud.setText(%text);
	if (%sec > 0)
	{
		schedule(%sec * 1000, RPGClient_Hud, setText, "");
	}
}

function RPGClient_Dialog_Show(%title, %body, %sec)
{
	messageBoxOK(%title, %body, "");
}

function RPGClient_List_Begin(%title, %page, %pages)
{
	$RPGClient::ListBody = "";
	$RPGClient::ListTitle = %title @ " (" @ (%page + 1) @ "/" @ %pages @ ")";
}

function RPGClient_List_Row(%row)
{
	$RPGClient::ListBody = $RPGClient::ListBody @ %row @ "\n";
}

function RPGClient_List_End()
{
	if ($RPGClient::ListBody !$= "")
	{
		messageBoxOK($RPGClient::ListTitle, $RPGClient::ListBody, "");
	}
}

package RPGClient_Cleanup
{
	function disconnectedCleanup(%doReconnect)
	{
		RPGClient_DisableOverlay();
		RPGClient_UnbindKeys();
		$RPGClient::Server = 0;
		$RPGClient::HelloPending = 0;
		$RPGClient::HelloLast = "";
		Parent::disconnectedCleanup(%doReconnect);
	}
};
activatePackage(RPGClient_Cleanup);

package RPGClient_Mission
{
	function onMissionDownloadComplete()
	{
		Parent::onMissionDownloadComplete();
		schedule(250, 0, RPGClient_SendHello);
	}
};
activatePackage(RPGClient_Mission);

echo("Client_RPG loaded (protocol " @ $RPGClient::Version @ ")");