func main() {
err := graphics.Init()
if err != nil {
log.Fatalln(err)
}
defer graphics.Quit()
win, err := graphics.CreateWindow(800, 600, "Test")
if err != nil {
log.Fatalln(err)
}
defer win.Destroy()
if len(os.Args) == 1 {
newBackEnd()
}
frontend := NewPlayerFrontend(win)
if len(os.Args) == 1 {
joinEvent := &events.PlayerJoin{
UUID: frontend.id,
}
events.SendEvent(joinEvent)
go StartNetworkListener()
loadlevel := events.LoadLevel{
FileName: "assets/testTiles.json",
}
events.SendEvent(&loadlevel)
} else {
NewNetworkBackend(os.Args[1])
}
frontend.Mainloop()
}
func NewNetworkFrontend(conn net.Conn) *NetworkFrontend {
n := NetworkFrontend{
Network: Network{
conn: conn,
dir: events.DirFront,
decoder: json.NewDecoder(conn),
eventCh: make(chan events.Event),
close: make(chan struct{}),
},
}
n.afterDestroy = n.sendLeave
id, err := uuid.NewV4()
if err != nil {
log.Fatalln(err)
}
n.id = id.String()
events.AddListener(n.eventCh, events.DirFront, 0)
setEvent := &events.SetUUID{
UUID: n.id,
}
n.sendEvent(setEvent)
go n.readloop()
go n.mainloop()
joinEvent := &events.PlayerJoin{
UUID: n.id,
}
events.SendEvent(events.ReloadLevel{})
events.SendEvent(joinEvent)
return &n
}
func (p *PlayerFrontend) Mainloop() {
nextUpdate := time.After(10 * time.Microsecond)
loop:
for {
select {
case ev := <-p.eventCh:
p.processEvent(ev)
case <-nextUpdate:
nextUpdate = time.After(time.Second / 60)
p.processInput()
if err := p.window.Update(p.getDraw()); err != nil {
log.Fatalln(err)
}
case _, ok := <-p.close:
if !ok {
break loop
}
}
}
events.RemoveListener(p.eventCh, events.DirFront, 0)
for _, v := range p.units {
v.Destroy()
}
leaveEvent := &events.PlayerLeave{
UUID: p.id,
}
events.SendEvent(leaveEvent)
}
func (b *BackEnd) createPlayerUnit(id int, uuid string) {
createPlayer := events.CreateUnit{
ID: id,
X: b.lastLevel.StartX,
Y: b.lastLevel.StartY,
W: 32,
H: 32,
AttachTo: uuid,
}
events.SendEvent(&createPlayer)
}
func (p *PlayerFrontend) sendInput(in Input) {
player := p.GetUnit(p.player)
if player == nil {
return
}
e := events.InputUpdate{
ID: p.player,
X: in.X,
Y: in.Y,
}
events.SendEvent(&e)
}
func (n *Network) readloop() {
for {
var data struct {
Type int
Event json.RawMessage
}
err := n.decoder.Decode(&data)
if err != nil {
if n, ok := err.(net.Error); ok && n.Temporary() {
continue
}
log.Println(err)
break
}
ev, err := events.DecodeJSON(data.Type, data.Event)
if err != nil {
log.Println(err)
break
}
ev.SetDuplicate(true)
events.SendEvent(ev)
}
}
func (b *BackEnd) processEvent(ev events.Event) {
switch e := ev.(type) {
case *events.CreateUnit:
b.unitInfo = append(b.unitInfo, NewUnit(e.X, e.Y, PlayerT, e.ID, b))
case *events.DestroyUnit:
for i, unit := range b.unitInfo {
if unit.unitID == e.ID {
b.unitInfo = append(b.unitInfo[:i], b.unitInfo[i+1:]...)
break
}
}
case *events.ChangeLevel:
b.lastLevel = e
for _, unit := range b.unitInfo {
unit.Destroy()
}
b.unitInfo = make([]*unit, 0, len(e.Units))
b.nextID = 1
for _, unit := range e.Units {
b.processEvent(&unit)
if b.nextID <= unit.ID {
b.nextID = unit.ID + 1
}
}
for k, v := range b.players {
if _, ok := e.Players[k]; !ok {
if b.nextID <= v {
b.nextID = v + 1
}
b.createPlayerUnit(v, k)
}
}
case events.ReloadLevel:
units := make([]events.CreateUnit, len(b.unitInfo))
for i, unit := range b.unitInfo {
units[i] = events.CreateUnit{
ID: unit.unitID,
X: unit.x,
Y: unit.y,
W: 32,
H: 32,
}
}
newLevel := &events.ChangeLevel{
// TODO Change this to copy the contents of Tilemaps
Tilemaps: b.lastLevel.Tilemaps,
Images: b.lastLevel.Images,
TileWidth: b.lastLevel.TileWidth,
TileHeight: b.lastLevel.TileHeight,
StartX: b.lastLevel.StartX,
StartY: b.lastLevel.StartY,
CollideMap: b.lastLevel.CollideMap,
Pits: b.lastLevel.Pits,
Units: units,
Players: b.players,
}
events.SendEvent(newLevel)
case *events.PlayerJoin:
id := b.nextID
b.players[e.UUID] = id
b.nextID++
if b.lastLevel == nil {
return
}
b.createPlayerUnit(id, e.UUID)
case *events.LoadLevel:
b.loadLevel(e)
case *events.PlayerLeave:
destroy := events.DestroyUnit{
ID: b.players[e.UUID],
}
events.SendEvent(&destroy)
delete(b.players, e.UUID)
}
}
func (b *BackEnd) loadLevel(e *events.LoadLevel) {
type level struct {
Height int32
Width int32
Tileheight int32
Tilewidth int32
Layers []struct {
Data []int
Properties map[string]string
Height int32
Width int32
}
Tilesets []struct {
Image string
Tilewidth int32
Tileheight int32
Tileproperties map[string]map[string]string
}
Properties map[string]string
}
file, err := os.Open(e.FileName)
if err != nil {
log.Printf("failed loading file: %s\n", e.FileName)
return
}
defer file.Close()
var x level
err = json.NewDecoder(file).Decode(&x)
if err != nil {
log.Printf("failed loading file: %s\n", e.FileName)
return
}
//changeLevel struct
//load the change
startX, err := strconv.Atoi(x.Properties["StartX"])
startY, err := strconv.Atoi(x.Properties["StartY"])
cLevel := events.ChangeLevel{
Tilemaps: make([]events.Tilemap, 0, len(x.Tilesets)),
Images: [][][]int{},
TileWidth: x.Tilewidth,
TileHeight: x.Tileheight,
StartX: float64(startX)*float64(x.Tilewidth) + float64(x.Tilewidth)*.5,
StartY: float64(startY)*float64(x.Tileheight) + float64(x.Tileheight)*.5,
CollideMap: make([][]bool, x.Height),
Units: make([]events.CreateUnit, 0, len(b.players)),
Players: map[string]int{},
Pits: make([][]bool, x.Height),
}
b.nextID = 1
for playerID := range b.players {
create := events.CreateUnit{
ID: b.nextID,
X: cLevel.StartX,
Y: cLevel.StartY,
W: 32,
H: 32,
AttachTo: playerID,
}
b.players[playerID] = b.nextID
cLevel.Players[playerID] = b.nextID
cLevel.Units = append(cLevel.Units, create)
b.nextID++
}
for i := range cLevel.CollideMap {
cLevel.CollideMap[i] = make([]bool, x.Width)
cLevel.Pits[i] = make([]bool, x.Width)
}
for _, t := range x.Tilesets {
tm := events.Tilemap{
Filename: t.Image,
TileWidth: t.Tilewidth,
TileHeight: t.Tileheight,
}
cLevel.Tilemaps = append(cLevel.Tilemaps, tm)
}
for z, layer := range x.Layers {
cLevel.Images = append(cLevel.Images, [][]int{})
var i int32
for i = 0; i < layer.Height; i++ {
cLevel.Images[z] = append(cLevel.Images[z], layer.Data[i*layer.Width:(i+1)*layer.Width])
}
for yC, row := range cLevel.Images[z] {
for xC, tile := range row {
for _, tileset := range x.Tilesets {
for k, v := range tileset.Tileproperties {
if v["Pit"] == "True" {
if strconv.Itoa(tile-1) == k {
cLevel.Pits[yC][xC] = true
}
}
}
}
if layer.Properties["collide"] == "true" {
if tile != 0 {
cLevel.CollideMap[yC][xC] = true
}
}
}
}
}
events.SendEvent(&cLevel)
}
func (n *NetworkFrontend) sendLeave() {
leave := events.PlayerLeave{
UUID: n.id,
}
events.SendEvent(&leave)
}
//has to do with everything about the unit
func (u *unit) updateUnit() {
curRect := u.typ.hitDetect.collisionBox(int32(u.x), int32(u.y))
newX := u.x + u.xV
if u.xV > 0 {
//right
currBox := curRect.rightBox
currBox.right += int32(u.xV)
tileX, _ := currBox.checkRect(u.backAccess.lastLevel.CollideMap, 1, 0, u.backAccess.lastLevel.TileWidth, u.backAccess.lastLevel.TileHeight)
if tileX != -1 {
newX = float64(int32(tileX)*u.backAccess.lastLevel.TileWidth - u.typ.hitDetect.rightBox.right - 1)
u.xV = 0
}
} else {
//left
currbox := curRect.leftBox
currbox.left += int32(u.xV)
tileX, _ := currbox.checkRect(u.backAccess.lastLevel.CollideMap, -1, 0, u.backAccess.lastLevel.TileWidth, u.backAccess.lastLevel.TileHeight)
if tileX != -1 {
newX = float64(int32(tileX+1)*u.backAccess.lastLevel.TileWidth - u.typ.hitDetect.leftBox.left)
u.xV = 0
}
}
curRect = u.typ.hitDetect.collisionBox(int32(newX), int32(u.y))
newY := u.y + u.yV
if u.yV > 0 {
//down
currbox := curRect.bottomBox
currbox.bottom += int32(u.yV)
_, tileY := currbox.checkRect(u.backAccess.lastLevel.CollideMap, 0, 1, u.backAccess.lastLevel.TileWidth, u.backAccess.lastLevel.TileHeight)
if tileY != -1 {
newY = float64(int32(tileY)*u.backAccess.lastLevel.TileHeight - u.typ.hitDetect.bottomBox.bottom - 1)
u.yV = 0
}
} else {
//up
currBox := curRect.topBox
currBox.top += int32(u.yV)
_, tileY := currBox.checkRect(u.backAccess.lastLevel.CollideMap, 0, -1, u.backAccess.lastLevel.TileWidth, u.backAccess.lastLevel.TileHeight)
if tileY != -1 {
newY = float64(int32(tileY+1)*u.backAccess.lastLevel.TileHeight - u.typ.hitDetect.topBox.top)
u.yV = 0
}
}
u.x = newX
u.y = newY
u.xV += u.xAcl + (-u.xV * 0.8)
u.yV += u.yAcl + (-u.yV * 0.8)
if u.backAccess.lastLevel.Pits[int32(u.y)/u.backAccess.lastLevel.TileHeight][int32(u.x)/u.backAccess.lastLevel.TileWidth] {
u.x = u.backAccess.lastLevel.StartX
u.y = u.backAccess.lastLevel.StartY
u.xV = 0
u.yV = 0
}
e := events.UnitMoved{
ID: u.unitID,
NewX: u.x,
NewY: u.y,
}
events.SendEvent(&e)
}