support multi-module (#4)

* add multimodule
* re-package modules

server/internal/controller/fleet_send.go

@@ -0,0 +1,64 @@
+package controller
+
+import (
+	"galaxy/util"
+
+	e "galaxy/error"
+
+	"github.com/iliadenisov/galaxy/server/internal/model/game"
+)
+
+func (c *Cache) FleetSend(ri, fi int, planetNumber uint) error {
+	c.validateRaceIndex(ri)
+	c.validateFleetIndex(fi)
+	fleetState := c.FleetState(c.g.Fleets[fi].ID)
+	sourcePlanet, ok := fleetState.AtPlanet()
+	if !ok || game.StateInOrbit != fleetState.State && game.StateLaunched != fleetState.State {
+		return e.NewShipsBusyError("state: %s", fleetState.State)
+	}
+
+	p1, ok := c.Planet(sourcePlanet)
+	if !ok {
+		return e.NewGameStateError("source planet #%d does not exists", sourcePlanet)
+	}
+	p2, ok := c.Planet(planetNumber)
+	if !ok {
+		return e.NewEntityNotExistsError("destination planet #%d", planetNumber)
+	}
+	rangeToDestination := util.ShortDistance(c.g.Map.Width, c.g.Map.Height, p1.X.F(), p1.Y.F(), p2.X.F(), p2.Y.F())
+	if rangeToDestination > c.g.Race[ri].FlightDistance() {
+		return e.NewSendUnreachableDestinationError("range=%.03f", rangeToDestination)
+	}
+
+	for sgi := range c.FleetGroupIdx(ri, fi) {
+		st := c.MustShipType(ri, c.ShipGroup(sgi).TypeID)
+		if st.DriveBlockMass() == 0 {
+			return e.NewSendShipHasNoDrivesError("Class=%s", st.Name)
+		}
+	}
+
+	if sourcePlanet == planetNumber {
+		c.UnsendFleet(ri, fi)
+		return nil
+	}
+
+	c.LaunchFleet(ri, fi, planetNumber)
+
+	return nil
+}
+
+func (c *Cache) LaunchFleet(ri, fi int, destination uint) {
+	c.validateRaceIndex(ri)
+	c.validateFleetIndex(fi)
+	for sgi := range c.FleetGroupIdx(ri, fi) {
+		c.LaunchShips(sgi, destination)
+	}
+}
+
+func (c *Cache) UnsendFleet(ri, fi int) {
+	c.validateRaceIndex(ri)
+	c.validateFleetIndex(fi)
+	for sgi := range c.FleetGroupIdx(ri, fi) {
+		c.UnsendShips(sgi)
+	}
+}