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server uses existing heightmap

This commit is contained in:
Sky Johnson 2025-09-08 19:32:11 -05:00
parent 34bbc39595
commit 4484b381b8
3 changed files with 25 additions and 309 deletions

View File

@ -1,198 +0,0 @@
#!/usr/bin/env php
<?php
/**
* Generate packet definitions for C++ client and Go server from packets.json
*/
/**
* Load packet definitions from JSON file
*/
function load_packet_definitions($filename = 'packets.json') {
if (!file_exists($filename)) {
throw new Exception("Could not open $filename");
}
$content = file_get_contents($filename);
$packets = json_decode($content, true);
if (json_last_error() !== JSON_ERROR_NONE) {
throw new Exception("JSON decode error: " . json_last_error_msg());
}
return $packets;
}
/**
* Convert PascalCase to SNAKE_CASE
*/
function to_snake_case($str) {
$result = preg_replace('/([A-Z])/', '_$1', $str);
return strtoupper(ltrim($result, '_'));
}
/**
* Generate C++ header file with packet definitions
*/
function generate_cpp_header($packets) {
$header = <<<CPP
// Auto-generated packet definitions from packets.json
// DO NOT EDIT MANUALLY
#pragma once
#include <cstdint>
#include <string>
CPP;
// Generate enum
$header .= "enum class MessageType : uint8_t {\n";
// Sort keys for consistent output
$names = array_keys($packets['opcodes']);
sort($names);
foreach ($names as $i => $name) {
$packet = $packets['opcodes'][$name];
$header .= sprintf(" %s = %s", $name, $packet['id']);
if ($i < count($names) - 1) {
$header .= ",";
}
$header .= "\n";
}
$header .= "};\n\n";
// Generate packet structures
$header .= "// Packet structure definitions\n";
$header .= "namespace Packets {\n\n";
foreach ($names as $name) {
$packet = $packets['opcodes'][$name];
if (!empty($packet['fields'])) {
$header .= sprintf("struct %s {\n", $name);
$header .= sprintf(" static constexpr MessageType TYPE = MessageType::%s;\n", $name);
foreach ($packet['fields'] as $field) {
$cpp_type = '';
switch ($field['type']) {
case 'string':
$cpp_type = 'std::string';
break;
case 'uint8':
$cpp_type = 'uint8_t';
break;
case 'uint32':
$cpp_type = 'uint32_t';
break;
case 'float32':
$cpp_type = 'float';
break;
case 'array':
$header .= sprintf(" // Array field: %s - requires custom handling\n", $field['name']);
continue 2;
}
$header .= sprintf(" %s %s;\n", $cpp_type, $field['name']);
}
$header .= "};\n\n";
}
}
$header .= "} // namespace Packets\n";
return $header;
}
/**
* Generate Go file with packet definitions
*/
function generate_go_file($packets) {
$go_file = <<<GO
// Auto-generated packet definitions from packets.json
// DO NOT EDIT MANUALLY
package main
// Message type constants
const (
GO;
$go_file .= "\n";
// Sort keys for consistent output
$names = array_keys($packets['opcodes']);
sort($names);
// Generate constants
foreach ($names as $name) {
$packet = $packets['opcodes'][$name];
$const_name = 'MSG_' . to_snake_case($name);
$go_file .= sprintf("\t%s = %s\n", $const_name, $packet['id']);
}
$go_file .= ")\n\n";
// Generate packet structures
$go_file .= "// Packet structure definitions\n\n";
foreach ($names as $name) {
$packet = $packets['opcodes'][$name];
if (!empty($packet['fields'])) {
$struct_name = "Packet $name";
$go_file .= sprintf("type %s struct {\n", $struct_name);
foreach ($packet['fields'] as $field) {
$field_name = ucfirst($field['name']);
$go_type = '';
switch ($field['type']) {
case 'string':
$go_type = 'string';
break;
case 'uint8':
$go_type = 'uint8';
break;
case 'uint32':
$go_type = 'uint32';
break;
case 'float32':
$go_type = 'float32';
break;
case 'array':
$go_file .= sprintf("\t// Array field: %s - requires custom handling\n", $field_name);
continue 2;
}
$go_file .= sprintf("\t%s %s\n", $field_name, $go_type);
}
$go_file .= "}\n\n";
}
}
return $go_file;
}
try {
// Load packet definitions
$packets = load_packet_definitions();
// Generate C++ header
$cpp_header = generate_cpp_header($packets);
$cpp_path = 'client/net/PacketDefinitions.hpp';
file_put_contents($cpp_path, $cpp_header);
echo "Generated $cpp_path\n";
// Generate Go file
$go_file = generate_go_file($packets);
$go_path = 'server/packet_definitions.go';
file_put_contents($go_path, $go_file);
echo "Generated $go_path\n";
echo sprintf("Successfully generated packet definitions for protocol version %s\n", $packets['version']);
} catch (Exception $e) {
echo "Error: " . $e->getMessage() . "\n";
exit(1);
}

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@ -1,96 +0,0 @@
{
"version": "1.0.0",
"opcodes": {
"Login": {
"id": "0x01",
"fields": []
},
"Position": {
"id": "0x02",
"fields": [
{"name": "x", "type": "float32"},
{"name": "y", "type": "float32"},
{"name": "z", "type": "float32"}
]
},
"Spawn": {
"id": "0x03",
"fields": [
{"name": "playerId", "type": "uint32"},
{"name": "x", "type": "float32"},
{"name": "y", "type": "float32"},
{"name": "z", "type": "float32"},
{"name": "color", "type": "string"}
]
},
"Move": {
"id": "0x04",
"fields": [
{"name": "playerId", "type": "uint32"},
{"name": "dx", "type": "float32"},
{"name": "dy", "type": "float32"},
{"name": "dz", "type": "float32"}
]
},
"Update": {
"id": "0x05",
"fields": [
{"name": "playerId", "type": "uint32"},
{"name": "x", "type": "float32"},
{"name": "y", "type": "float32"},
{"name": "z", "type": "float32"}
]
},
"PlayerJoined": {
"id": "0x06",
"fields": [
{"name": "playerId", "type": "uint32"},
{"name": "x", "type": "float32"},
{"name": "y", "type": "float32"},
{"name": "z", "type": "float32"},
{"name": "color", "type": "string"}
]
},
"PlayerLeft": {
"id": "0x07",
"fields": [
{"name": "playerId", "type": "uint32"}
]
},
"PlayerList": {
"id": "0x08",
"fields": [
{"name": "count", "type": "uint8"},
{"name": "players", "type": "array", "itemType": {
"fields": [
{"name": "playerId", "type": "uint32"},
{"name": "x", "type": "float32"},
{"name": "y", "type": "float32"},
{"name": "z", "type": "float32"},
{"name": "color", "type": "string"}
]
}}
]
},
"ChangeColor": {
"id": "0x09",
"fields": [
{"name": "playerId", "type": "uint32"},
{"name": "color", "type": "string"}
]
},
"ColorChanged": {
"id": "0x0A",
"fields": [
{"name": "playerId", "type": "uint32"},
{"name": "color", "type": "string"}
]
}
},
"types": {
"uint8": {"size": 1, "encoding": "little-endian"},
"uint32": {"size": 4, "encoding": "little-endian"},
"float32": {"size": 4, "encoding": "little-endian"},
"string": {"encoding": "length-prefixed", "lengthType": "uint8"}
}
}

View File

@ -149,20 +149,37 @@ func main() {
var ( var (
port = flag.String("port", "9999", "UDP port to listen on") port = flag.String("port", "9999", "UDP port to listen on")
worldSize = flag.Int("size", WorldSize, "World size for heightmap generation") worldSize = flag.Int("size", WorldSize, "World size for heightmap generation")
skipGen = flag.Bool("skip-gen", false, "Skip heightmap generation") skipGen = flag.Bool("skip-gen", false, "Skip heightmap generation (fail if none exists)")
forceGen = flag.Bool("force-gen", false, "Force heightmap regeneration even if one exists")
assetsPath = flag.String("assets", "../assets", "Path to assets directory") assetsPath = flag.String("assets", "../assets", "Path to assets directory")
) )
flag.Parse() flag.Parse()
// Setup logging // Setup logging
log.SetPrefix("[GameServer] ") log.SetPrefix("[Game] ")
log.SetFlags(log.Ldate | log.Ltime | log.Lmicroseconds) log.SetFlags(log.Ldate | log.Ltime | log.Lmicroseconds)
var heightmap [][]float32 var heightmap [][]float32
binPath := fmt.Sprintf("%s/heightmap.bin", *assetsPath)
if !*skipGen { // Check if heightmap exists and should be loaded
// Generate and save heightmap if _, err := os.Stat(binPath); err == nil && !*forceGen && !*skipGen {
log.Printf("Generating %dx%d heightmap...", *worldSize, *worldSize) // Heightmap exists and we're not forcing regeneration
log.Printf("Found existing heightmap at %s, loading...", binPath)
heightmap, err = loadHeightmapBinary(binPath)
if err != nil {
log.Printf("Failed to load existing heightmap: %v, generating new one...", err)
heightmap = nil
} else {
log.Printf("Successfully loaded existing heightmap")
}
} else if *forceGen {
log.Printf("Force regeneration requested, ignoring existing heightmap")
}
// Generate new heightmap if needed (not loaded, force generation, or doesn't exist)
if heightmap == nil && !*skipGen {
log.Printf("Generating new %dx%d heightmap...", *worldSize, *worldSize)
heightmap = generateHeightmap(*worldSize) heightmap = generateHeightmap(*worldSize)
pngPath := fmt.Sprintf("%s/heightmap.png", *assetsPath) pngPath := fmt.Sprintf("%s/heightmap.png", *assetsPath)
@ -172,20 +189,13 @@ func main() {
log.Printf("Saved heightmap PNG to %s", pngPath) log.Printf("Saved heightmap PNG to %s", pngPath)
} }
binPath := fmt.Sprintf("%s/heightmap.bin", *assetsPath)
if err := saveHeightmapBinary(heightmap, binPath); err != nil { if err := saveHeightmapBinary(heightmap, binPath); err != nil {
log.Fatalf("Failed to save binary heightmap: %v", err) log.Fatalf("Failed to save binary heightmap: %v", err)
} }
log.Printf("Saved heightmap binary to %s", binPath) log.Printf("Saved heightmap binary to %s", binPath)
} else { } else if *skipGen && heightmap == nil {
// Load existing heightmap // skip-gen was specified but no heightmap exists
binPath := fmt.Sprintf("%s/heightmap.bin", *assetsPath) log.Fatalf("No existing heightmap found and generation was skipped (--skip-gen flag)")
log.Printf("Loading existing heightmap from %s", binPath)
var err error
heightmap, err = loadHeightmapBinary(binPath)
if err != nil {
log.Fatalf("Failed to load heightmap: %v", err)
}
} }
server, err := net.NewServer(*port, heightmap) server, err := net.NewServer(*port, heightmap)