add networking, 3d improvements, reorganize src structure

src/net/pxl8_protocol.h

@@ -0,0 +1,93 @@
+#pragma once
+
+#include "pxl8_types.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define PXL8_PROTOCOL_VERSION 1
+#define PXL8_MAX_SNAPSHOT_ENTITIES 256
+#define PXL8_MAX_SNAPSHOT_EVENTS 32
+#define PXL8_COMMAND_PAYLOAD_SIZE 64
+#define PXL8_EVENT_PAYLOAD_SIZE 15
+
+typedef enum pxl8_msg_type {
+    PXL8_MSG_NONE = 0,
+    PXL8_MSG_CONNECT,
+    PXL8_MSG_DISCONNECT,
+    PXL8_MSG_INPUT,
+    PXL8_MSG_COMMAND,
+    PXL8_MSG_SNAPSHOT,
+    PXL8_MSG_EVENT
+} pxl8_msg_type;
+
+typedef struct pxl8_msg_header {
+    u32 sequence;
+    u16 size;
+    u8 type;
+    u8 version;
+} pxl8_msg_header;
+
+typedef enum pxl8_cmd_type {
+    PXL8_CMD_NONE = 0,
+    PXL8_CMD_SPAWN_ENTITY,
+} pxl8_cmd_type;
+
+typedef struct pxl8_input_msg {
+    u32 buttons;
+    f32 look_dx;
+    f32 look_dy;
+    f32 move_x;
+    f32 move_y;
+    f32 yaw;
+    u64 tick;
+    u64 timestamp;
+} pxl8_input_msg;
+
+typedef struct pxl8_command_msg {
+    u16 cmd_type;
+    u8 payload[PXL8_COMMAND_PAYLOAD_SIZE];
+    u16 payload_size;
+    u64 tick;
+} pxl8_command_msg;
+
+typedef struct pxl8_entity_state {
+    u64 entity_id;
+    u8 userdata[56];
+} pxl8_entity_state;
+
+typedef struct pxl8_event_msg {
+    u8 event_type;
+    u8 payload[PXL8_EVENT_PAYLOAD_SIZE];
+} pxl8_event_msg;
+
+typedef struct pxl8_snapshot_header {
+    u16 entity_count;
+    u16 event_count;
+    u64 player_id;
+    u64 tick;
+    f32 time;
+} pxl8_snapshot_header;
+
+size_t pxl8_protocol_serialize_header(const pxl8_msg_header* msg, u8* buf, size_t len);
+size_t pxl8_protocol_deserialize_header(const u8* buf, size_t len, pxl8_msg_header* msg);
+
+size_t pxl8_protocol_serialize_input(const pxl8_input_msg* msg, u8* buf, size_t len);
+size_t pxl8_protocol_deserialize_input(const u8* buf, size_t len, pxl8_input_msg* msg);
+
+size_t pxl8_protocol_serialize_command(const pxl8_command_msg* msg, u8* buf, size_t len);
+size_t pxl8_protocol_deserialize_command(const u8* buf, size_t len, pxl8_command_msg* msg);
+
+size_t pxl8_protocol_serialize_entity_state(const pxl8_entity_state* state, u8* buf, size_t len);
+size_t pxl8_protocol_deserialize_entity_state(const u8* buf, size_t len, pxl8_entity_state* state);
+
+size_t pxl8_protocol_serialize_event(const pxl8_event_msg* msg, u8* buf, size_t len);
+size_t pxl8_protocol_deserialize_event(const u8* buf, size_t len, pxl8_event_msg* msg);
+
+size_t pxl8_protocol_serialize_snapshot_header(const pxl8_snapshot_header* hdr, u8* buf, size_t len);
+size_t pxl8_protocol_deserialize_snapshot_header(const u8* buf, size_t len, pxl8_snapshot_header* hdr);
+
+#ifdef __cplusplus
+}
+#endif