Ilia Denisov
81 lines
2.2 KiB
Go
81 lines
2.2 KiB
Go
package game
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import (
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"fmt"
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"slices"
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e "github.com/iliadenisov/galaxy/internal/error"
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"github.com/iliadenisov/galaxy/internal/util"
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)
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func (g *Game) SendFleet(raceName, fleetName string, planetNumber uint) error {
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ri, err := g.raceIndex(raceName)
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if err != nil {
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return err
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}
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fi := g.fleetIndex(ri, fleetName)
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if fi < 0 {
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return e.NewEntityNotExistsError("fleet %q", fleetName)
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}
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return g.sendFleetInternal(ri, fi, planetNumber)
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}
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func (g *Game) sendFleetInternal(ri, fi int, planetNumber uint) error {
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state, sourcePlanet, _ := FleetState(g, g.Fleets[fi].ID)
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if StateInOrbit != state && StateLaunched != state {
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return e.NewShipsBusyError()
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}
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p1, ok := PlanetByNum(g, *sourcePlanet)
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if !ok {
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return e.NewGameStateError("source planet #%d does not exists", sourcePlanet)
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}
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p2, ok := PlanetByNum(g, planetNumber)
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if !ok {
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return e.NewEntityNotExistsError("destination planet #%d", planetNumber)
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}
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rangeToDestination := util.ShortDistance(g.Map.Width, g.Map.Height, p1.X, p1.Y, p2.X, p2.Y)
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if rangeToDestination > g.Race[ri].FlightDistance() {
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return e.NewSendUnreachableDestinationError("range=%.03f", rangeToDestination)
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}
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for sg := range FleetGroups(g, ri, fi) {
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st, ok := ShipClass(g, ri, sg.TypeID)
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if !ok {
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return e.NewGameStateError("not found: ShipType ID=%v", sg.TypeID)
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}
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if st.DriveBlockMass() == 0 {
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return e.NewSendShipHasNoDrivesError("Class=%s", st.Name)
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}
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}
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if *sourcePlanet == planetNumber {
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UnsendFleet(g, ri, fi)
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return nil
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}
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LaunchFleet(g, ri, fi, planetNumber)
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return nil
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}
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func LaunchFleet(g *Game, ri, fi int, destination uint) {
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for sg := range FleetGroups(g, ri, fi) {
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sgi := slices.IndexFunc(g.ShipGroups, func(s ShipGroup) bool { return sg.Index == s.Index })
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if sgi < 0 {
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panic(fmt.Sprintf("LauncgFleet: cannot find ship group index=%d", sg.Index))
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}
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g.ShipGroups[sgi] = LaunchShips(sg, destination)
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}
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}
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func UnsendFleet(g *Game, ri, fi int) {
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for sg := range FleetGroups(g, ri, fi) {
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sgi := slices.IndexFunc(g.ShipGroups, func(s ShipGroup) bool { return sg.Index == s.Index })
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if sgi < 0 {
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panic(fmt.Sprintf("UnsendFleet: cannot find ship group index=%d", sg.Index))
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}
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g.ShipGroups[sgi] = UnsendShips(sg)
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}
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}
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