Generate basic world & recieve data on client

server/plugin/control/control.go

@@ -3,8 +3,14 @@ package control
 import (
 	"context"
 	"database/sql"
-
 	"github.com/heroiclabs/nakama-common/runtime"
+	"github.com/josephbmanley/family/server/plugin/gamemap"
+)
+
+type OpCode int64
+
+const (
+	OpCodeTileUpdate = 1
 )
 
 type Match struct{}
@@ -12,20 +18,19 @@ type Match struct{}
 type MatchState struct {
 	presences map[string]runtime.Presence
 	inputs    map[string]string
-	positions map[string]string
-	jumps     map[string]string
-	colors    map[string]string
+	positions map[string]map[string]int
 	names     map[string]string
+	worldMap  *gamemap.WorldMap
 }
 
 func (m *Match) MatchInit(ctx context.Context, logger runtime.Logger, db *sql.DB, nk runtime.NakamaModule, params map[string]interface{}) (interface{}, int, string) {
+
 	state := &MatchState{
 		presences: map[string]runtime.Presence{},
 		inputs:    map[string]string{},
-		positions: map[string]string{},
-		jumps:     map[string]string{},
-		colors:    map[string]string{},
+		positions: map[string]map[string]int{},
 		names:     map[string]string{},
+		worldMap:  gamemap.IntializeMap(),
 	}
 	tickRate := 10
 	label := "{\"name\": \"Game World\"}"
@@ -47,6 +52,20 @@ func (m *Match) MatchJoin(ctx context.Context, logger runtime.Logger, db *sql.DB
 	mState, _ := state.(*MatchState)
 	for _, precense := range presences {
 		mState.presences[precense.GetUserId()] = precense
+
+		mState.positions[precense.GetUserId()] = map[string]int{"x": 16, "y": 16}
+
+		mState.names[precense.GetUserId()] = "User"
+
+		if regionData, err := mState.worldMap.GetJsonRegion(16-8, 16+8, 16-8, 16+8); err != nil {
+			logger.Error(err.Error())
+			return mState
+		} else {
+			if sendErr := dispatcher.BroadcastMessage(OpCodeTileUpdate, regionData, []runtime.Presence{precense}, precense, true); sendErr != nil {
+				logger.Error(sendErr.Error())
+				return mState
+			}
+		}
 	}
 	return mState
 }

server/plugin/gamemap/gamemap.go

@@ -0,0 +1,52 @@
+package gamemap
+
+import (
+	"encoding/json"
+	"fmt"
+)
+
+type WorldMap struct {
+	data  [][]int
+	max_x int
+	max_y int
+}
+
+func (m WorldMap) GetTile(x int, y int) (int, error) {
+	if x > m.max_x || y > m.max_y {
+		return -1, fmt.Errorf("Map out of bounds error: %d, %d", x, y)
+	}
+	return m.data[x][y], nil
+}
+
+func (m WorldMap) GetJsonRegion(start_x, end_x, start_y, end_y int) ([]byte, error) {
+	regionMap := make(map[int]map[int]int)
+	for x := start_x; x < end_x; x++ {
+
+		for y := start_y; y < end_y; y++ {
+			if result, err := m.GetTile(x, y); err != nil {
+				return nil, err
+			} else {
+				regionMap[x][y] = result
+			}
+		}
+	}
+
+	jsonString, err := json.Marshal(regionMap)
+	return jsonString, err
+}
+
+func IntializeMap() *WorldMap {
+	worldMap := new(WorldMap)
+	worldMap.max_x = 64
+	worldMap.max_y = 64
+	for x := 0; x < worldMap.max_x; x++ {
+		for y := 0; y < worldMap.max_y; y++ {
+			worldMap.data[x][y] = 0
+		}
+	}
+
+	// Add dot at top left for testing
+	worldMap.data[0][0] = 1
+
+	return worldMap
+}

server/plugin/go.sum

@@ -15,6 +15,7 @@ github.com/heroiclabs/nakama-common v1.5.1 h1:ViCm9AvYYdQOCSKEa34SuSQ80JyZOHl6OD
 github.com/heroiclabs/nakama-common v1.5.1/go.mod h1:nZAXHdeo4SyPlCyf7pU9rCVizxEhBF74gt7teDe/EaQ=
 github.com/heroiclabs/nakama-common v1.7.2 h1:FQedePGCorBl3tXW4Ro8+XLGbEDQfGrT5Tb07j1UaLc=
 github.com/josephbmanley/family v0.0.0-20200815220504-0d9d05943cef h1:6oijVkew6eKI1fGE+YMaxmiNlp/hkN9wDpStoid9/ZI=
+github.com/josephbmanley/family v0.0.0-20200816202226-abfb0f428423 h1:ynsJFMYkfs3JspzvLCfmPGJwdKY/4QeX457U0+y4J1I=
 github.com/prometheus/client_model v0.0.0-20190812154241-14fe0d1b01d4/go.mod h1:xMI15A0UPsDsEKsMN9yxemIoYk6Tm2C1GtYGdfGttqA=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
 golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
@@ -42,6 +43,7 @@ google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8/go.mod h1:JiN7NxoA
 google.golang.org/genproto v0.0.0-20190819201941-24fa4b261c55/go.mod h1:DMBHOl98Agz4BDEuKkezgsaosCRResVns1a3J2ZsMNc=
 google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
 google.golang.org/grpc v1.23.0/go.mod h1:Y5yQAOtifL1yxbo5wqy6BxZv8vAUGQwXBOALyacEbxg=
+google.golang.org/grpc v1.27.1 h1:zvIju4sqAGvwKspUQOhwnpcqSbzi7/H6QomNNjTL4sk=
 google.golang.org/grpc v1.27.1/go.mod h1:qbnxyOmOxrQa7FizSgH+ReBfzJrCY1pSN7KXBS8abTk=
 honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=