refactor separate framework from game code, add demo3d

demo3d/client/net/demo3d_protocol.h

@@ -0,0 +1,143 @@
+#pragma once
+
+#include "pxl8_types.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define DEMO3D_PROTOCOL_VERSION 1
+#define DEMO3D_MAX_SNAPSHOT_ENTITIES 256
+#define DEMO3D_MAX_SNAPSHOT_EVENTS 32
+#define DEMO3D_COMMAND_PAYLOAD_SIZE 64
+#define DEMO3D_EVENT_PAYLOAD_SIZE 15
+
+typedef enum demo3d_msg_type {
+    DEMO3D_MSG_NONE = 0,
+    DEMO3D_MSG_CHUNK,
+    DEMO3D_MSG_CHUNK_ENTER,
+    DEMO3D_MSG_CHUNK_EXIT,
+    DEMO3D_MSG_COMMAND,
+    DEMO3D_MSG_CONNECT,
+    DEMO3D_MSG_DISCONNECT,
+    DEMO3D_MSG_EVENT,
+    DEMO3D_MSG_INPUT,
+    DEMO3D_MSG_SNAPSHOT
+} demo3d_msg_type;
+
+typedef struct demo3d_msg_header {
+    u32 sequence;
+    u16 size;
+    u8 type;
+    u8 version;
+} demo3d_msg_header;
+
+typedef enum demo3d_cmd_type {
+    DEMO3D_CMD_NONE = 0,
+    DEMO3D_CMD_SPAWN_ENTITY,
+} demo3d_cmd_type;
+
+typedef struct demo3d_input_msg {
+    u32 buttons;
+    f32 look_dx;
+    f32 look_dy;
+    f32 move_x;
+    f32 move_y;
+    f32 yaw;
+    u64 tick;
+    u64 timestamp;
+} demo3d_input_msg;
+
+typedef struct demo3d_command_msg {
+    u16 cmd_type;
+    u8 payload[DEMO3D_COMMAND_PAYLOAD_SIZE];
+    u16 payload_size;
+    u64 tick;
+} demo3d_command_msg;
+
+typedef struct demo3d_entity_state {
+    u64 entity_id;
+    u8 userdata[56];
+} demo3d_entity_state;
+
+typedef struct demo3d_event_msg {
+    u8 event_type;
+    u8 payload[DEMO3D_EVENT_PAYLOAD_SIZE];
+} demo3d_event_msg;
+
+typedef struct demo3d_snapshot_header {
+    u16 entity_count;
+    u16 event_count;
+    u64 player_id;
+    u64 tick;
+    f32 time;
+} demo3d_snapshot_header;
+
+#define DEMO3D_CHUNK_TYPE_BSP 1
+
+#define DEMO3D_CHUNK_FLAG_FINAL 0x04
+#define DEMO3D_CHUNK_MAX_PAYLOAD 1400
+
+typedef struct demo3d_chunk_msg_header {
+    u8 chunk_type;
+    u8 flags;
+    u8 fragment_idx;
+    u8 fragment_count;
+    u32 id;
+    i32 cx, cy, cz;
+    u32 version;
+    u16 payload_size;
+    u16 reserved;
+} demo3d_chunk_msg_header;
+
+typedef struct demo3d_bsp_wire_header {
+    u32 num_vertices;
+    u32 num_edges;
+    u32 num_faces;
+    u32 num_planes;
+    u32 num_nodes;
+    u32 num_leafs;
+    u32 num_surfedges;
+    u32 num_marksurfaces;
+    u32 num_cell_portals;
+    u32 visdata_size;
+    u32 num_vertex_lights;
+    u32 num_heightfield;
+} demo3d_bsp_wire_header;
+
+usize demo3d_protocol_serialize_header(const demo3d_msg_header* msg, u8* buf, usize len);
+usize demo3d_protocol_deserialize_header(const u8* buf, usize len, demo3d_msg_header* msg);
+
+usize demo3d_protocol_serialize_input(const demo3d_input_msg* msg, u8* buf, usize len);
+usize demo3d_protocol_deserialize_input(const u8* buf, usize len, demo3d_input_msg* msg);
+
+usize demo3d_protocol_serialize_command(const demo3d_command_msg* msg, u8* buf, usize len);
+usize demo3d_protocol_deserialize_command(const u8* buf, usize len, demo3d_command_msg* msg);
+
+usize demo3d_protocol_serialize_entity_state(const demo3d_entity_state* state, u8* buf, usize len);
+usize demo3d_protocol_deserialize_entity_state(const u8* buf, usize len, demo3d_entity_state* state);
+
+usize demo3d_protocol_serialize_event(const demo3d_event_msg* msg, u8* buf, usize len);
+usize demo3d_protocol_deserialize_event(const u8* buf, usize len, demo3d_event_msg* msg);
+
+usize demo3d_protocol_serialize_snapshot_header(const demo3d_snapshot_header* hdr, u8* buf, usize len);
+usize demo3d_protocol_deserialize_snapshot_header(const u8* buf, usize len, demo3d_snapshot_header* hdr);
+
+usize demo3d_protocol_serialize_chunk_msg_header(const demo3d_chunk_msg_header* hdr, u8* buf, usize len);
+usize demo3d_protocol_deserialize_chunk_msg_header(const u8* buf, usize len, demo3d_chunk_msg_header* hdr);
+
+usize demo3d_protocol_deserialize_bsp_wire_header(const u8* buf, usize len, demo3d_bsp_wire_header* hdr);
+
+typedef struct demo3d_chunk_enter_msg {
+    i32 cx;
+    i32 cz;
+} demo3d_chunk_enter_msg;
+
+usize demo3d_protocol_serialize_chunk_enter(const demo3d_chunk_enter_msg* msg, u8* buf, usize len);
+usize demo3d_protocol_deserialize_chunk_enter(const u8* buf, usize len, demo3d_chunk_enter_msg* msg);
+
+u32 demo3d_chunk_hash(i32 cx, i32 cz);
+
+#ifdef __cplusplus
+}
+#endif