world: add Classify component

code/game/header/entity.h

@@ -1,5 +1,5 @@
 #pragma once
 #include "system.h"
 
-uint64_t entity_spawn(char *name);
+uint64_t entity_spawn(char *name, uint16_t class_id /* 0 = no streaming */);
 void entity_despawn(uint64_t ent_id);

code/game/header/entity_view.h

@@ -5,8 +5,10 @@
 #include "zpl.h"
 
 typedef enum {
-    EKIND_PLAYER = 0,
-    EKIND_THING,
+    EKIND_SERVER = 0,
+    EKIND_PLAYER,
+    EKIND_DEMO_NPC,
+    EKIND_MONSTER,
     EKIND_CHUNK,
     FORCE_EKIND_UINT16 = UINT16_MAX
 } entity_kind;

code/game/source/entity.c

@@ -1,4 +1,5 @@
 #include "entity.h"
+#include "entity_view.h"
 #include "flecs/flecs.h"
 #include "flecs/flecs_meta.h"
 #include "librg.h"
@@ -8,7 +9,7 @@
 #include "modules/systems.h"
 #include "zpl.h"
 
-uint64_t entity_spawn(char *name) {
+uint64_t entity_spawn(char *name, uint16_t class_id) {
     ECS_IMPORT(world_ecs(), Components);
     
     ecs_entity_t e = ecs_new(world_ecs(), 0);
@@ -19,6 +20,7 @@ uint64_t entity_spawn(char *name) {
     
     ecs_set(world_ecs(), e, EcsName, {.alloc_value = name });
     ecs_set(world_ecs(), e, Velocity, {0});
+    ecs_set(world_ecs(), e, Classify, { .id = class_id });
     ecs_add(world_ecs(), e, Walking);
     Position *pos = ecs_get_mut(world_ecs(), e, Position, NULL);
 #if 1
@@ -29,9 +31,10 @@ uint64_t entity_spawn(char *name) {
     pos->y=88;
 #endif
     
-    
-    librg_entity_track(world_tracker(), e);
-    librg_entity_chunk_set(world_tracker(), e, librg_chunk_from_realpos(world_tracker(), pos->x, pos->y, 0));
+    if (class_id != EKIND_SERVER) {
+        librg_entity_track(world_tracker(), e);
+        librg_entity_chunk_set(world_tracker(), e, librg_chunk_from_realpos(world_tracker(), pos->x, pos->y, 0));
+    }
     
     return (uint64_t)e;
 }

code/game/source/main.c

@@ -3,6 +3,7 @@
 #include "system.h"
 #include "game.h"
 #include "entity.h"
+#include "entity_view.h"
 #include "utils/options.h"
 #include "signal_handling.h"
 #include "profiler.h"
@@ -69,7 +70,7 @@ int main(int argc, char** argv) {
     {
         ECS_IMPORT(world_ecs(), Components);
         for (uint32_t i = 0; i < npc_count; i++) {
-            uint64_t e = entity_spawn(NULL);
+            uint64_t e = entity_spawn(NULL, EKIND_DEMO_NPC);
             ecs_add(world_ecs(), e, EcsDemoNPC);
             Position *pos = ecs_get_mut(world_ecs(), e, Position, NULL);
             pos->x=rand() % world_dim();

code/game/source/platform_raylib.c

@@ -193,7 +193,7 @@ void DEBUG_draw_entities(uint64_t key, entity_view * data) {
     float fixed_title_offset = 2;
     
     switch (data->kind) {
-        case EKIND_THING: {
+        case EKIND_DEMO_NPC: {
             float x = data->x;
             float y = data->y;
 #if 0
@@ -207,10 +207,12 @@ void DEBUG_draw_entities(uint64_t key, entity_view * data) {
         case EKIND_PLAYER: {
             float x = data->x;
             float y = data->y;
+#if 1
             const char *title = TextFormat("Player %d", key);
             int title_w = MeasureTextEco(title, font_size, font_spacing);
             DrawRectangleEco(x-title_w/2-title_bg_offset/2, y-size-font_size-fixed_title_offset, title_w+title_bg_offset, font_size, ColorAlpha(BLACK, data->tran_time));
             DrawTextEco(title, x-title_w/2, y-size-font_size-fixed_title_offset, font_size, ColorAlpha(RAYWHITE, data->tran_time), font_spacing); 
+#endif
             DrawCircleEco(x, y, size, ColorAlpha(RED, data->tran_time));
         }break;        
         default:break;

code/game/source/player.c

@@ -1,5 +1,6 @@
 #include "player.h"
 #include "entity.h"
+#include "entity_view.h"
 #include "flecs/flecs.h"
 #include "flecs/flecs_meta.h"
 #include "librg.h"
@@ -10,7 +11,7 @@
 #include "zpl.h"
 
 uint64_t player_spawn(char *name) {    
-    ecs_entity_t e = entity_spawn(NULL);
+    ecs_entity_t e = entity_spawn(NULL, EKIND_PLAYER);
     
     if (!name) {
         name = zpl_bprintf("player_%d", e);

code/game/source/world/world.c

@@ -17,10 +17,13 @@ entity_view world_build_entity_view(int64_t e) {
     ECS_IMPORT(world_ecs(), Components);
     entity_view view = {0};
     
-    // TODO(zaklaus): branch out based on ECS tags
+    const Classify *classify = ecs_get(world_ecs(), e, Classify);
+    assert(classify);
+    
+    view.kind = classify->id;
+    
     const Position *pos = ecs_get(world_ecs(), e, Position);
     if (pos) {
-        view.kind = ecs_has(world_ecs(), e, EcsClient) ? EKIND_PLAYER : EKIND_THING;
         view.x = pos->x;
         view.y = pos->y;
     }
@@ -35,7 +38,6 @@ entity_view world_build_entity_view(int64_t e) {
     
     if (ecs_get(world_ecs(), e, Chunk)) {
         Chunk *chpos = ecs_get_mut(world_ecs(), e, Chunk, 0);
-        view.kind = EKIND_CHUNK;
         view.x = chpos->x;
         view.y = chpos->y;
         view.blocks_used = 1;
@@ -149,6 +151,7 @@ int32_t world_init(int32_t seed, uint16_t chunk_size, uint16_t chunk_amount) {
     
     for (int i = 0; i < world.chunk_amount * world.chunk_amount; ++i) {
         ecs_entity_t e = ecs_new(world.ecs, 0);
+        ecs_set(world.ecs, e, Classify, {.id = EKIND_CHUNK });
         Chunk *chunk = ecs_get_mut(world.ecs, e, Chunk, NULL);
         librg_entity_track(world.tracker, e);
         librg_entity_chunk_set(world.tracker, e, i);

code/modules/modules/components.h

@@ -33,12 +33,28 @@ ECS_STRUCT(ClientInfo, {
                uint16_t view_id;                                             
            });
 
+ECS_STRUCT(Health, {
+               float hp;
+               float max_hp;
+               
+               // NOTE(zaklaus): Intentionally global, to allow for creative use of damage combos
+               float pain_time;
+           });
+
+ECS_STRUCT(Classify, {
+               uint16_t id;
+           });
+
 typedef struct {
     ECS_DECLARE_COMPONENT(Chunk);
     ECS_DECLARE_COMPONENT(Position);
     ECS_DECLARE_COMPONENT(Vector2D);
     ECS_DECLARE_COMPONENT(Drawable);
     ECS_DECLARE_COMPONENT(Input);
+    ECS_DECLARE_COMPONENT(Velocity);
+    ECS_DECLARE_COMPONENT(ClientInfo);
+    ECS_DECLARE_COMPONENT(Health);
+    ECS_DECLARE_COMPONENT(Classify);
     ECS_DECLARE_ENTITY(EcsActor);
     ECS_DECLARE_ENTITY(EcsPlayer);
     ECS_DECLARE_ENTITY(EcsBuilder);
@@ -48,9 +64,7 @@ typedef struct {
     ECS_DECLARE_TYPE(Movement);
     ECS_DECLARE_ENTITY(Walking);
     ECS_DECLARE_ENTITY(Flying);
-    ECS_DECLARE_COMPONENT(Velocity);
     ECS_DECLARE_ENTITY(EcsClient);
-    ECS_DECLARE_COMPONENT(ClientInfo);
 } Components;
 
 #define ComponentsImportHandles(handles)\
@@ -59,17 +73,19 @@ ECS_IMPORT_COMPONENT(handles, Vector2D);\
 ECS_IMPORT_COMPONENT(handles, Position);\
 ECS_IMPORT_COMPONENT(handles, Drawable);\
 ECS_IMPORT_COMPONENT(handles, Input);\
+ECS_IMPORT_COMPONENT(handles, Velocity);\
+ECS_IMPORT_COMPONENT(handles, ClientInfo);\
+ECS_IMPORT_COMPONENT(handles, Health);\
+ECS_IMPORT_COMPONENT(handles, Classify);\
 ECS_IMPORT_TYPE(handles, Player);\
 ECS_IMPORT_TYPE(handles, Builder);\
+ECS_IMPORT_TYPE(handles, Movement);\
 ECS_IMPORT_ENTITY(handles, EcsActor);\
 ECS_IMPORT_ENTITY(handles, EcsPlayer);\
 ECS_IMPORT_ENTITY(handles, EcsBuilder);\
 ECS_IMPORT_ENTITY(handles, EcsDemoNPC);\
-ECS_IMPORT_TYPE(handles, Movement);\
 ECS_IMPORT_ENTITY(handles, Walking);\
 ECS_IMPORT_ENTITY(handles, Flying);\
-ECS_IMPORT_COMPONENT(handles, Velocity);\
 ECS_IMPORT_ENTITY(handles, EcsClient);\
-ECS_IMPORT_COMPONENT(handles, ClientInfo);\
 
 void ComponentsImport(ecs_world_t *ecs);

code/modules/source/components.c

@@ -11,6 +11,8 @@ void ComponentsImport(ecs_world_t *ecs) {
     ECS_META(ecs, ClientInfo);
     ECS_META(ecs, Velocity);
     ECS_META(ecs, Input);
+    ECS_META(ecs, Health);
+    ECS_META(ecs, Classify);
     
     ECS_TAG(ecs, Walking);
     ECS_TAG(ecs, Flying);
@@ -33,6 +35,8 @@ void ComponentsImport(ecs_world_t *ecs) {
     ECS_SET_COMPONENT(Velocity);
     ECS_SET_COMPONENT(ClientInfo);
     ECS_SET_COMPONENT(Input);
+    ECS_SET_COMPONENT(Health);
+    ECS_SET_COMPONENT(Classify);
     ECS_SET_ENTITY(EcsClient);
     ECS_SET_ENTITY(Walking);
     ECS_SET_ENTITY(Flying);