Cleanup plugin code

server/plugin/control/control.go

@@ -7,14 +7,21 @@ import (
 	"github.com/josephbmanley/family/server/plugin/gamemap"
 )
 
+// OpCode represents a enum for valid OpCodes
+// used by the match logic
 type OpCode int64
 
 const (
+	// OpCodeTileUpdate is used for tile updates
 	OpCodeTileUpdate = 1
 )
 
+// Match is the object registered
+// as a runtime.Match interface
 type Match struct{}
 
+// MatchState holds information that is passed between
+// Nakama match methods
 type MatchState struct {
 	presences map[string]runtime.Presence
 	inputs    map[string]string
@@ -23,6 +30,7 @@ type MatchState struct {
 	worldMap  *gamemap.WorldMap
 }
 
+// MatchInit is called when a new match is created
 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{
@@ -38,12 +46,16 @@ func (m *Match) MatchInit(ctx context.Context, logger runtime.Logger, db *sql.DB
 	return state, tickRate, label
 }
 
+// MatchJoinAttempt is called when a player tried to join a match
+// and validates their attempt
 func (m *Match) MatchJoinAttempt(ctx context.Context, logger runtime.Logger, db *sql.DB, nk runtime.NakamaModule, dispatcher runtime.MatchDispatcher, tick int64, state interface{}, presence runtime.Presence, metadata map[string]string) (interface{}, bool, string) {
 	mState, ok := state.(*MatchState)
 	if !ok {
 		logger.Error("Invalid match state on join attempt!")
 		return state, false, "Invalid match state!"
 	}
+
+	// Validate user is not already connected
 	if _, ok := mState.presences[presence.GetUserId()]; ok {
 		return mState, false, "User already logged in."
 	} else {
@@ -52,32 +64,39 @@ func (m *Match) MatchJoinAttempt(ctx context.Context, logger runtime.Logger, db
 
 }
 
+// MatchJoin is called when a player successfully joins the match
 func (m *Match) MatchJoin(ctx context.Context, logger runtime.Logger, db *sql.DB, nk runtime.NakamaModule, dispatcher runtime.MatchDispatcher, tick int64, state interface{}, presences []runtime.Presence) interface{} {
 	mState, ok := state.(*MatchState)
 	if !ok {
 		logger.Error("Invalid match state on join!")
-		return state, false, "Invalid match state!"
+		return state
 	}
+
 	for _, precense := range presences {
+
+		// Add presence to map
 		mState.presences[precense.GetUserId()] = precense
 
+		// Set player spawn pos
 		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 {
+		// Get intial tile data around player
+		if regionData, err := mState.worldMap.GetJSONRegionAround(16, 16, 8); err != nil {
 			logger.Error(err.Error())
-			return mState
 		} else {
+
+			// Broadcast tile data to client
 			if sendErr := dispatcher.BroadcastMessage(OpCodeTileUpdate, regionData, []runtime.Presence{precense}, precense, true); sendErr != nil {
 				logger.Error(sendErr.Error())
-				return mState
 			}
 		}
 	}
 	return mState
 }
 
+// MatchLeave is called when a player leaves the match
 func (m *Match) MatchLeave(ctx context.Context, logger runtime.Logger, db *sql.DB, nk runtime.NakamaModule, dispatcher runtime.MatchDispatcher, tick int64, state interface{}, presences []runtime.Presence) interface{} {
 	mState, ok := state.(*MatchState)
 	if !ok {
@@ -90,6 +109,7 @@ func (m *Match) MatchLeave(ctx context.Context, logger runtime.Logger, db *sql.D
 	return mState
 }
 
+// MatchLoop is code that is executed every tick
 func (m *Match) MatchLoop(ctx context.Context, logger runtime.Logger, db *sql.DB, nk runtime.NakamaModule, dispatcher runtime.MatchDispatcher, tick int64, state interface{}, messages []runtime.MatchData) interface{} {
 	// Custom code to:
 	// - Process the messages received.
@@ -99,6 +119,7 @@ func (m *Match) MatchLoop(ctx context.Context, logger runtime.Logger, db *sql.DB
 	return state
 }
 
+// MatchTerminate is code that is executed when the match ends
 func (m *Match) MatchTerminate(ctx context.Context, logger runtime.Logger, db *sql.DB, nk runtime.NakamaModule, dispatcher runtime.MatchDispatcher, tick int64, state interface{}, graceSeconds int) interface{} {
 	return state
 }

server/plugin/gamemap/gamemap.go

@@ -5,12 +5,14 @@ import (
 	"fmt"
 )
 
+// WorldMap is the data structure used game world
 type WorldMap struct {
 	data  [64][64]int
 	max_x int
 	max_y int
 }
 
+// GetTile method is used to grab a tile value with error checking
 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)
@@ -18,11 +20,13 @@ func (m WorldMap) GetTile(x int, y int) (int, error) {
 	return m.data[x][y], nil
 }
 
-func (m WorldMap) GetJsonRegion(start_x, end_x, start_y, end_y int) ([]byte, error) {
+// GetJSONRegion method returns a JSON object containing the tile values of everything
+// within a given range
+func (m WorldMap) GetJSONRegion(startX, endX, startY, endY int) ([]byte, error) {
 	regionMap := map[int]map[int]int{}
-	for x := start_x; x < end_x; x++ {
+	for x := startX; x < endX; x++ {
 		regionMap[x] = map[int]int{}
-		for y := start_y; y < end_y; y++ {
+		for y := startY; y < endY; y++ {
 			if result, err := m.GetTile(x, y); err != nil {
 				return nil, err
 			} else {
@@ -35,6 +39,14 @@ func (m WorldMap) GetJsonRegion(start_x, end_x, start_y, end_y int) ([]byte, err
 	return jsonString, err
 }
 
+// GetJSONRegionAround returns a JSON object of tile data from a center point
+func (m WorldMap) GetJSONRegionAround(centerX, centerY, regionRadius int) ([]byte, error) {
+	jsonString, err := m.GetJSONRegion(centerX-regionRadius, centerX+regionRadius, centerY-regionRadius, centerY+regionRadius)
+	return jsonString, err
+}
+
+// IntializeMap is a method that helps easily
+// generate WorldMap objects
 func IntializeMap() *WorldMap {
 	worldMap := new(WorldMap)
 	worldMap.max_x = 64

server/plugin/rpc/rpc.go

@@ -9,27 +9,20 @@ import (
 func getFirstWorld(ctx context.Context, logger runtime.Logger, nk runtime.NakamaModule) (string, error) {
 
 	// List existing matches
-	// that have been 1 & 4 players
+	// that have been 1 & 32 players
 	minSize := 1
-	maxSize := 31
-	//5, false, "", &minSize, &maxSize, ""
+	maxSize := 32
+
+	// Lists server authorative servers
 	if matches, err := nk.MatchList(ctx, 1, true, "", &minSize, &maxSize, ""); err != nil {
 		logger.Printf("Failed to list matches when grabing first world! Error: %v\n", err)
 		return "", err
 	} else {
-
-		//For debug purposes
-		for _, match := range matches {
-			logger.Info("Found match with id: %s", match.GetMatchId())
-		}
-
 		// If no matches exist, create one
 		if len(matches) <= 0 {
 
 			// Create match
-			//params := map[string]interface{}{}
 			matchID, createErr := nk.MatchCreate(ctx, "control", map[string]interface{}{})
-			//return nakama.match_create("world_control", {})
 
 			// Return if creation error
 			if createErr != nil {