new iteration of draft

code/games/minimal/CMakeLists.txt

@@ -1,5 +1,5 @@
 add_executable(minimal
-    src/main.c
+    src/oldmain.c
     src/platform.c
     src/worldgen.c
     src/texgen.c

code/games/minimal/src/main.c

@@ -1,82 +1,5 @@
-#define ZPL_IMPL
-#include "zpl.h"
-#include "platform/system.h"
-#include "core/game.h"
-#include "models/entity.h"
-#include "world/entity_view.h"
-#include "utils/options.h"
-#include "platform/signal_handling.h"
-#include "platform/profiler.h"
+typedef int efd_main;
 
-#include "flecs.h"
-#include "flecs/flecs_os_api_stdcpp.h"
-
-#include "models/components.h"
-#include "systems/systems.h"
-
-#include "platform/arch.h"
-
-#define DEFAULT_WORLD_SEED 302097
-#define DEFAULT_CHUNK_SIZE 16 /* amount of blocks within a chunk (single axis) */
-#define DEFAULT_WORLD_SIZE 5 /* amount of chunks within a world (single axis) */
-
-int main(int argc, char** argv) {
-    zpl_opts opts={0};
-    zpl_opts_init(&opts, zpl_heap(), argv[0]);
-
-    zpl_opts_add(&opts, "?", "help", "the HELP section", ZPL_OPTS_FLAG);
-    zpl_opts_add(&opts, "v", "viewer-only", "run viewer-only client", ZPL_OPTS_FLAG);
-    zpl_opts_add(&opts, "d", "server-only", "run dedicated server", ZPL_OPTS_FLAG);
-    zpl_opts_add(&opts, "p", "preview-map", "draw world preview", ZPL_OPTS_FLAG);
-    zpl_opts_add(&opts, "s", "seed", "world seed", ZPL_OPTS_INT);
-    zpl_opts_add(&opts, "r", "random-seed", "generate random world seed", ZPL_OPTS_FLAG);
-    //zpl_opts_add(&opts, "cs", "chunk-size", "amount of blocks within a chunk (single axis)", ZPL_OPTS_INT);
-    zpl_opts_add(&opts, "ws", "world-size", "amount of chunks within a world (single axis)", ZPL_OPTS_INT);
-    zpl_opts_add(&opts, "ip", "host", "host IP address", ZPL_OPTS_STRING);
-    zpl_opts_add(&opts, "port", "port", "port number", ZPL_OPTS_INT);
-
-    uint32_t ok = zpl_opts_compile(&opts, argc, argv);
-
-    if (!ok) {
-        zpl_opts_print_errors(&opts);
-        zpl_opts_print_help(&opts);
-        return -1;
-    }
-
-    int8_t is_viewer_only = zpl_opts_has_arg(&opts, "viewer-only");
-    int8_t is_server_only = zpl_opts_has_arg(&opts, "server-only");
-    int32_t seed = (int32_t)zpl_opts_integer(&opts, "seed", DEFAULT_WORLD_SEED);
-    uint16_t world_size = (uint16_t)zpl_opts_integer(&opts, "world-size", DEFAULT_WORLD_SIZE);
-    uint16_t chunk_size = DEFAULT_CHUNK_SIZE; //zpl_opts_integer(&opts, "chunk-size", DEFAULT_CHUNK_SIZE);
-    zpl_string host = zpl_opts_string(&opts, "host", NULL);
-    uint16_t port = (uint16_t)zpl_opts_integer(&opts, "port", 0);
-
-    game_kind play_mode = GAMEKIND_SINGLE;
-
-    if (is_viewer_only) play_mode = GAMEKIND_CLIENT;
-    if (is_server_only) play_mode = GAMEKIND_HEADLESS;
-
-    if (zpl_opts_has_arg(&opts, "random-seed")) {
-        zpl_random rnd={0};
-        zpl_random_init(&rnd);
-        seed = zpl_random_gen_u32(&rnd);
-        zpl_printf("Seed: %u\n", seed);
-    }
-
-    if (zpl_opts_has_arg(&opts, "preview-map")) {
-        generate_minimap(seed, WORLD_BLOCK_SIZE, chunk_size, world_size);
-        return 0;
-    }
-
-    sighandler_register();
-    game_init(host, port, play_mode, 1, seed, chunk_size, world_size, 0);
-
-    game_run();
-
-    game_shutdown();
-    sighandler_unregister();
-
-    zpl_string_free(host);
-    zpl_opts_free(&opts);
+efd_main start() {
     return 0;
 }

code/games/minimal/src/oldmain.c

@@ -0,0 +1,82 @@
+#define ZPL_IMPL
+#include "zpl.h"
+#include "platform/system.h"
+#include "core/game.h"
+#include "models/entity.h"
+#include "world/entity_view.h"
+#include "utils/options.h"
+#include "platform/signal_handling.h"
+#include "platform/profiler.h"
+
+#include "flecs.h"
+#include "flecs/flecs_os_api_stdcpp.h"
+
+#include "models/components.h"
+#include "systems/systems.h"
+
+#include "platform/arch.h"
+
+#define DEFAULT_WORLD_SEED 302097
+#define DEFAULT_CHUNK_SIZE 16 /* amount of blocks within a chunk (single axis) */
+#define DEFAULT_WORLD_SIZE 5 /* amount of chunks within a world (single axis) */
+
+int main(int argc, char** argv) {
+    zpl_opts opts={0};
+    zpl_opts_init(&opts, zpl_heap(), argv[0]);
+
+    zpl_opts_add(&opts, "?", "help", "the HELP section", ZPL_OPTS_FLAG);
+    zpl_opts_add(&opts, "v", "viewer-only", "run viewer-only client", ZPL_OPTS_FLAG);
+    zpl_opts_add(&opts, "d", "server-only", "run dedicated server", ZPL_OPTS_FLAG);
+    zpl_opts_add(&opts, "p", "preview-map", "draw world preview", ZPL_OPTS_FLAG);
+    zpl_opts_add(&opts, "s", "seed", "world seed", ZPL_OPTS_INT);
+    zpl_opts_add(&opts, "r", "random-seed", "generate random world seed", ZPL_OPTS_FLAG);
+    //zpl_opts_add(&opts, "cs", "chunk-size", "amount of blocks within a chunk (single axis)", ZPL_OPTS_INT);
+    zpl_opts_add(&opts, "ws", "world-size", "amount of chunks within a world (single axis)", ZPL_OPTS_INT);
+    zpl_opts_add(&opts, "ip", "host", "host IP address", ZPL_OPTS_STRING);
+    zpl_opts_add(&opts, "port", "port", "port number", ZPL_OPTS_INT);
+
+    uint32_t ok = zpl_opts_compile(&opts, argc, argv);
+
+    if (!ok) {
+        zpl_opts_print_errors(&opts);
+        zpl_opts_print_help(&opts);
+        return -1;
+    }
+
+    int8_t is_viewer_only = zpl_opts_has_arg(&opts, "viewer-only");
+    int8_t is_server_only = zpl_opts_has_arg(&opts, "server-only");
+    int32_t seed = (int32_t)zpl_opts_integer(&opts, "seed", DEFAULT_WORLD_SEED);
+    uint16_t world_size = (uint16_t)zpl_opts_integer(&opts, "world-size", DEFAULT_WORLD_SIZE);
+    uint16_t chunk_size = DEFAULT_CHUNK_SIZE; //zpl_opts_integer(&opts, "chunk-size", DEFAULT_CHUNK_SIZE);
+    zpl_string host = zpl_opts_string(&opts, "host", NULL);
+    uint16_t port = (uint16_t)zpl_opts_integer(&opts, "port", 0);
+
+    game_kind play_mode = GAMEKIND_SINGLE;
+
+    if (is_viewer_only) play_mode = GAMEKIND_CLIENT;
+    if (is_server_only) play_mode = GAMEKIND_HEADLESS;
+
+    if (zpl_opts_has_arg(&opts, "random-seed")) {
+        zpl_random rnd={0};
+        zpl_random_init(&rnd);
+        seed = zpl_random_gen_u32(&rnd);
+        zpl_printf("Seed: %u\n", seed);
+    }
+
+    if (zpl_opts_has_arg(&opts, "preview-map")) {
+        generate_minimap(seed, WORLD_BLOCK_SIZE, chunk_size, world_size);
+        return 0;
+    }
+
+    sighandler_register();
+    game_init(host, port, play_mode, 1, seed, chunk_size, world_size, 0);
+
+    game_run();
+
+    game_shutdown();
+    sighandler_unregister();
+
+    zpl_string_free(host);
+    zpl_opts_free(&opts);
+    return 0;
+}

code/games/survival/CMakeLists.txt

@@ -1,5 +1,5 @@
 add_executable(survival
-    src/main.c
+    src/oldmain.c
     src/platform.c
     src/worldgen.c
     src/texgen.c

code/games/survival/src/main.c

@@ -1,101 +1,462 @@
-#define ZPL_IMPL
-#include "zpl.h"
-#include "platform/system.h"
-#include "core/game.h"
-#include "game.h"
-#include "models/entity.h"
-#include "world/entity_view.h"
-#include "utils/options.h"
-#include "platform/signal_handling.h"
-#include "platform/profiler.h"
+#include <stddef.h>
+#include <stdint.h>
+#include <stdbool.h>
 
-#include "flecs.h"
-#include "flecs/flecs_os_api_stdcpp.h"
+/// lib.c
 
-#include "models/components.h"
-#include "systems/systems.h"
+// core
 
-#include "platform/arch.h"
+typedef int efd_app;
+typedef uint16_t efd_entity_type;
+typedef int32_t efd_result;
+typedef void * efd_world;
+typedef int efd_entid;
 
-ZPL_DIAGNOSTIC_PUSH_WARNLEVEL(0)
-#include "tinyc2.h"
-ZPL_DIAGNOSTIC_POP
+// define amount of memeory reserved for???
+// custom data within COMMAND (cli->ser) and SNAPSHOT (ser->cli)
+#define EFD_COMMAND_SIZE 64 * 1024
+#define EFD_SNAPSHOT_SIZE 128 * 1024
 
-#define DEFAULT_WORLD_SEED 302097
-#define DEFAULT_CHUNK_SIZE 16 /* amount of blocks within a chunk (single axis) */
-#define DEFAULT_WORLD_SIZE 5 /* amount of chunks within a world (single axis) */
+#define EFD_TYPE_SHIFT 16
+#define EFD_ID(type) (((type) << EFD_TYPE_SHIFT) + 1)
+#define EFD_TYPE(id) ((id - 1) >> EFD_TYPE_SHIFT)
+#define EFD_END 0
 
-/*
-	TODO
-	- monster spawner
-	- the longer we survive, the more and stronger enemies we spawn
-	- player grows HP by leveling up
-	- XP increases by killing mobs
-	- player can pick an "ability" upon reaching level milestones
-	- abilities: armor/shield, TODO ...
-	- enemies damage player when close to him in ticks (damage effects, ...)
-	- basic projectile pooling (flecs)
-	- somewhat believable world gen, small hamlets with cols, etc
-*/
+typedef enum efd_instance_type {
+    EFD_TYPE_NONE = 0,
 
+    /* chunk */
+    EFD_TYPE_TILE,
+    EFD_TYPE_BLOCK,
+    EFD_TYPE_CHUNK,
+
+    /* entities */
+    EFD_TYPE_ITEM,
+    EFD_TYPE_OBJECT,
+    EFD_TYPE_DEVICE,
+    EFD_TYPE_VEHICLE,
+    EFD_TYPE_MOB,
+    EFD_TYPE_PLAYER,
+
+    /* other */
+    EFD_TYPE_OTHER,
+
+    /* utils */
+    EFD_TYPE_LAST,
+    EFD_TYPE_MAX = 0xFFFF,
+} efd_instance_type;
+
+typedef enum efd_flags {
+    EFD_FLAG_COLLISION = (1 << 1),
+    EFD_FLAG_HAZARD = (1 << 2),
+    EFD_FLAG_ESSENTIAL = (1 << 3),
+    EFD_FLAG_DESTROY_ON_COLLISION = (1 << 4),
+} efd_flags;
+
+
+// assets
+
+typedef enum efd_asset_type {
+    EFD_NONE = 0,
+    EFD_TEXTURE,
+    EFD_ANIMATION,
+    EFD_SOUND,
+    EFD_FONT,
+    EFD_SHADER,
+} efd_asset_type;
+
+typedef enum efd_asset_flags {
+    EFD_FLAG_ATLAS = (1 << 1),   // texture is an atlas and has multiple frames
+    EFD_FLAG_LOOPED = (1 << 2),  // frames are looped sequentially (requrires EFD_FLAG_ATLAS, can be combined with EFD_FLAG_RANDOM)
+    EFD_FLAG_RANDOM = (1 << 3),  // one of the frames is randomly chosen (requrires EFD_FLAG_ATLAS, can be combined with EFD_FLAG_LOOPED)
+    EFD_FLAG_COMPLEX = (1 << 4), // frames have a complex state system and require a separate asset with EFD_ANIMATION type
+} efd_asset_flags;
+
+typedef struct efd_asset {
+    efd_asset_type type;
+    int id;
+    const char *path;
+    int32_t flags;
+    struct {
+        int size_x;
+        int size_y;
+    } atlas;
+    void *data;
+} efd_asset;
+
+// objects
+
+typedef struct efd_tile {
+    int id;
+    int flags;
+    float drag;
+    float friction;
+} efd_tile;
+
+typedef struct efd_block {
+    int id;
+    int flags;
+    float bounce;
+    int velx;
+    int vely;
+} efd_block;
+
+typedef struct efd_item_list {
+    int id;
+    int qty;
+} efd_item_list;
+
+typedef struct efd_craft {
+    int producer;
+    int ticks;
+    efd_item_list *input;
+    efd_item_list *output;
+} efd_craft;
+
+typedef struct efd_tooltip {
+    const char *title;
+    const char *description;
+} efd_tooltip;
+
+typedef struct efd_entity {
+    int id;
+    int flags;
+    int stack;
+    union {
+        int durability;
+        int health;
+    };
+    efd_result (*spawn_cb)(efd_entid);
+    efd_item_list *drop;
+} efd_entity;
+
+
+typedef struct efd_app_desc {
+    const char *name;
+    int debug_ui;
+
+    int width;
+    int height;
+    int fullscreen;
+    int vsync;
+
+    int server_only;
+    int viewer_only;
+    int viewer_amount;
+    int world_seed;
+    int world_seed_random;
+
+    efd_result (*init_cb)();
+    efd_result (*system_cb)();
+    efd_result (*update_cb)();
+    efd_result (*render_cb)(efd_entity_type type);
+    efd_result (*player_join_cb)(efd_entid player_id);
+    efd_result (*player_leave_cb)(efd_entid player_id);
+    efd_result (*cleanup_cb)();
+
+    struct {
+        float item_pickup_radius;
+        float item_merge_radius;
+        float item_drop_radius;
+        float item_attract_radius;
+        float item_attract_force;
+    } rules;
+
+    efd_asset *assets;
+    efd_tile *tiles;
+    efd_block *blocks;
+    efd_entity *entities;
+    efd_craft *crafting;
+    efd_tooltip *tooltips;
+} efd_app_desc;
+
+/// app.c
+
+enum {
+    /* textures */
+    TILE_AIR = EFD_ID(EFD_TYPE_TILE),
+    TILE_DIRT,
+    TILE_GRASS,
+    TILE_STONE,
+    TILE_WATER,
+    TILE_LAVA,
+
+    BLOCK_AIR = EFD_ID(EFD_TYPE_BLOCK),
+    BLOCK_WOOD,
+    BLOCK_HILL,
+    BLOCK_HILL_SNOW,
+    BLOCK_FENCE_LEFT,
+    BLOCK_FENCE_RIGHT,
+    BLOCK_FENCE_UP,
+    BLOCK_FENCE_DOWN,
+    BLOCK_WALL_LEFT,
+    BLOCK_WALL_RIGHT,
+    BLOCK_WALL_UP,
+    BLOCK_WALL_DOWN,
+    BLOCK_BELT_LEFT,
+    BLOCK_BELT_RIGHT,
+    BLOCK_BELT_UP,
+    BLOCK_BELT_DOWN,
+
+    ENTITY_IRON_ORE = EFD_ID(EFD_TYPE_ITEM),
+    ENTITY_IRON_INGOT,
+    ENTITY_IRON_PLATE,
+    ENTITY_SCREW,
+    ENTITY_BELT,
+
+    ENTITY_FIR_TREE = EFD_ID(EFD_TYPE_OBJECT),
+    ENTITY_OAK_TREE,
+
+    ENTITY_CHEST = EFD_ID(EFD_TYPE_DEVICE),
+    ENTITY_FURNACE,
+    ENTITY_CRAFTBENCH,
+    ENTITY_ASSEMBLER,
+
+    ENTITY_MONSTER = EFD_ID(EFD_TYPE_MOB),
+    ENTITY_RABBIT,
+    ENTITY_BOAR,
+    ENTITY_BIZON,
+    ENTITY_BEAR,
+
+    ENTITY_TRUCK = EFD_ID(EFD_TYPE_VEHICLE),
+    ENTITY_CAR,
+
+    ENTITY_PLAYER = EFD_ID(EFD_TYPE_PLAYER),
+};
+
+efd_result init() {
+    return 0;
+}
+
+efd_result systems(efd_world *w) {
+    // ECS_SYSTEM(w, Move, EcsOnUpdate, Position, [in] Velocity);
+
+    return 0;
+}
+
+efd_result update() {
+    return 0;
+}
+
+efd_result render(efd_entity_type type) {
+    // switch (type) {
+    //     case ENTITY_PLAYER:
+    //         /* additional/replacable rendering code on top of what EFD provides for built-in types */
+    //         efd_render_texture(ENTITY_PLAYER, 0, 0, 0, 0, 0, 0, 0, 0);
+
+    //         return 1; /* we handled the rendering, don't render with the default renderer */
+    //         break;
+
+    //     case ENTITY_MONSTER:
+    //         /* our custom rendering code for monster */
+    //         efd_render_texture(ENTITY_MONSTER, 0, 0, 0, 0, 0, 0, 0, 0);
+    //         break;
+
+    //     case ENTITY_WEAPON:
+    //         /* our custom rendering code for weapon */
+    //         break;
+    // }
+
+    return 0;
+}
+
+efd_result player_join(efd_entid player) {
+    // efd_notify_push(player, "Test", "Welcome to the game!", 5.0f);
+    return 0;
+}
+
+efd_result player_leave(efd_entid player) {
+    return 0;
+}
+
+efd_result cleanup() {
+    return 0;
+}
+
+efd_result chest_spawn(efd_entid id) {
+    return 0;
+}
+
+efd_result furnace_spawn(efd_entid id) {
+    return 0;
+}
+
+efd_app_desc efd_main() {
+    return (efd_app_desc){
+        .name = "Survival",
+        .debug_ui = true,
+
+        /* these are defaults, with zpl_option/config files overrides */
+        .width = 1280,
+        .height = 720,
+        .fullscreen = 0,
+        .vsync = 1,
+
+        /* these are code overrides for zpl_option flags (not defaults) */
+        .server_only = false,
+        .viewer_only = false,
+        .viewer_amount = 1,
+        .world_seed = 0,
+        .world_seed_random = true,
+
+        /* primary callbacks */
+        .init_cb = init,
+        .system_cb = systems,
+        .update_cb = update,
+        .render_cb = render,
+        .player_join_cb = player_join,
+        .player_leave_cb = player_leave,
+        .cleanup_cb = cleanup,
+
+        .rules = {
+            .item_pickup_radius = 25.0f,
+            .item_merge_radius = 75.0f,
+            .item_drop_radius = 15.0f,
+            .item_attract_radius = 75.0f,
+            .item_attract_force = 0.1f,
+        },
+
+        .assets = (efd_asset[]){
+            {EFD_TEXTURE, TILE_GRASS, "assets/grass.png", EFD_FLAG_ATLAS | EFD_FLAG_RANDOM, .atlas = {4, 1}},
+            {EFD_TEXTURE, TILE_DIRT, "assets/dirt.png", EFD_FLAG_ATLAS | EFD_FLAG_RANDOM, .atlas = {4, 1}},
+            {EFD_TEXTURE, TILE_LAVA, "assets/lava.png", EFD_FLAG_ATLAS | EFD_FLAG_LOOPED, .atlas = {4, 1}},
+            {EFD_TEXTURE, TILE_WATER, "assets/water.png", EFD_FLAG_ATLAS | EFD_FLAG_RANDOM | EFD_FLAG_LOOPED, .atlas = {4, 1}},
+
+            {EFD_TEXTURE, ENTITY_OAK_TREE, "assets/tree.png"},
+            {EFD_TEXTURE, ENTITY_CHEST, "assets/chest.png"},
+            {EFD_TEXTURE, ENTITY_FURNACE, "assets/furnace.png"},
+
+            {EFD_TEXTURE, ENTITY_PLAYER, "assets/player.png", EFD_FLAG_ATLAS | EFD_FLAG_COMPLEX},
+            {EFD_TEXTURE, ENTITY_MONSTER, "assets/monster.png"},
+
+            /* animations */
+            {EFD_ANIMATION, ENTITY_PLAYER, "assets/player.anim"},
+
+            /* sounds */
+            {EFD_SOUND, ENTITY_PLAYER, "assets/player.wav"},
+
+            {EFD_END},
+        },
+
+        .tiles = (efd_tile[]){
+            {TILE_AIR},
+            {TILE_DIRT, .drag = 1.0f, .friction = 1.0f},
+            {TILE_GRASS, .drag = 1.0f, .friction = 1.0f},
+            {TILE_WATER, .drag = 0.11f , .friction = 10.0f},
+            {TILE_LAVA, EFD_FLAG_HAZARD, .drag = 6.2f , .friction = 40.0f},
+
+            {EFD_END},
+        },
+
+        .blocks = (efd_block[]){
+            {BLOCK_AIR},
+            {BLOCK_HILL, EFD_FLAG_COLLISION},
+            {BLOCK_HILL_SNOW, EFD_FLAG_COLLISION},
+            {BLOCK_WOOD, EFD_FLAG_COLLISION, .bounce = 0.0f},
+
+            {BLOCK_WALL_LEFT, EFD_FLAG_COLLISION, .bounce = 1.0f},
+            {BLOCK_WALL_RIGHT, EFD_FLAG_COLLISION, .bounce = 1.0f},
+            {BLOCK_WALL_UP, EFD_FLAG_COLLISION, .bounce = 1.0f},
+            {BLOCK_WALL_DOWN, EFD_FLAG_COLLISION, .bounce = 1.0f},
+
+            {BLOCK_FENCE_LEFT, EFD_FLAG_COLLISION, .bounce = 1.0f},
+            {BLOCK_FENCE_RIGHT, EFD_FLAG_COLLISION, .bounce = 1.0f},
+            {BLOCK_FENCE_UP, EFD_FLAG_COLLISION, .bounce = 1.0f},
+            {BLOCK_FENCE_DOWN, EFD_FLAG_COLLISION, .bounce = 1.0f},
+
+            {BLOCK_BELT_LEFT, .velx = -150.0f},
+            {BLOCK_BELT_RIGHT, .velx = 150.0f},
+            {BLOCK_BELT_UP, .vely = -150.0f},
+            {BLOCK_BELT_DOWN, .vely = 150.0f},
+
+            {EFD_END},
+        },
+
+        .entities = (efd_entity[]){
+            {ENTITY_IRON_ORE, .stack = 32},
+            {ENTITY_IRON_PLATE, .stack = 32},
+            {ENTITY_SCREW, .stack = 256},
+
+            {ENTITY_OAK_TREE, EFD_FLAG_DESTROY_ON_COLLISION, .drop = (efd_item_list[]){
+                {ENTITY_SCREW, 1},
+                {EFD_END},
+            }},
+
+            {ENTITY_CHEST, .spawn_cb = chest_spawn},
+            {ENTITY_FURNACE, .spawn_cb = furnace_spawn},
+
+            {ENTITY_MONSTER, .health = 256},
+            {ENTITY_TRUCK},
+            {ENTITY_PLAYER},
+
+            {EFD_END},
+        },
+
+        .crafting = (efd_craft[]){
+            {
+                .producer = ENTITY_FURNACE,
+                .ticks = 20,
+                .input = (efd_item_list[]){
+                    {ENTITY_IRON_ORE, 1},
+                    {EFD_END},
+                },
+                .output = (efd_item_list[]){
+                    {ENTITY_IRON_PLATE, 4},
+                    {EFD_END},
+                },
+            },
+            {
+                .producer = ENTITY_CRAFTBENCH,
+                .ticks = 40,
+                .input = (efd_item_list[]){
+                    {ENTITY_IRON_PLATE, 1},
+                    {EFD_END},
+                },
+                .output = (efd_item_list[]){
+                    {ENTITY_SCREW, 8},
+                    {EFD_END},
+                },
+            },
+            {
+                .producer = ENTITY_ASSEMBLER,
+                .ticks = 120,
+                .input = (efd_item_list[]){
+                    {ENTITY_SCREW, 4},
+                    {ENTITY_IRON_PLATE, 2},
+                    {EFD_END},
+                },
+                .output = (efd_item_list[]){
+                    {ENTITY_BELT, 1},
+                    {EFD_END},
+                },
+            },
+
+            {EFD_END},
+        },
+
+        .tooltips = (efd_tooltip[]){
+            {"BLOCK_STONE", "It's a block of stone, what did you expect?"},
+            {"BLOCK_BRICK", "It's a block of brick, what did you expect?"},
+            {EFD_END},
+        },
+    };
+}
+
+/// test.c
+
+#include <stdio.h>
+
+void test(efd_entity_type type) { printf("type: %d\n", type); }
 
 int main(int argc, char **argv) {
-    zpl_opts opts={0};
-    zpl_opts_init(&opts, zpl_heap(), argv[0]);
+    efd_app_desc desc = efd_main();
+    printf("value: %f\n", desc.rules.item_pickup_radius);
+    printf("TILE_DIRT: %d\n", TILE_DIRT);
+    printf("TILE_GRASS: %d\n", TILE_GRASS);
+    printf("ENTITY_PLAYER: %d, is_valid type: %d\n", ENTITY_PLAYER, EFD_TYPE(ENTITY_PLAYER) == EFD_TYPE_PLAYER);
+    printf("ENTITY_CHEST: %d, is_valid type: %d\n", ENTITY_CHEST, EFD_TYPE(ENTITY_CHEST) == EFD_TYPE_DEVICE);
 
-    zpl_opts_add(&opts, "?", "help", "the HELP section", ZPL_OPTS_FLAG);
-    zpl_opts_add(&opts, "v", "viewer-only", "run viewer-only client", ZPL_OPTS_FLAG);
-    zpl_opts_add(&opts, "d", "server-only", "run dedicated server", ZPL_OPTS_FLAG);
-    zpl_opts_add(&opts, "p", "preview-map", "draw world preview", ZPL_OPTS_FLAG);
-    zpl_opts_add(&opts, "s", "seed", "world seed", ZPL_OPTS_INT);
-    zpl_opts_add(&opts, "r", "random-seed", "generate random world seed", ZPL_OPTS_FLAG);
-    //zpl_opts_add(&opts, "cs", "chunk-size", "amount of blocks within a chunk (single axis)", ZPL_OPTS_INT);
-    zpl_opts_add(&opts, "ws", "world-size", "amount of chunks within a world (single axis)", ZPL_OPTS_INT);
-    zpl_opts_add(&opts, "ip", "host", "host IP address", ZPL_OPTS_STRING);
-    zpl_opts_add(&opts, "port", "port", "port number", ZPL_OPTS_INT);
+    desc.init_cb();
 
-    uint32_t ok = zpl_opts_compile(&opts, argc, argv);
-
-    if (!ok) {
-        zpl_opts_print_errors(&opts);
-        zpl_opts_print_help(&opts);
-        return -1;
-    }
-
-    int8_t is_viewer_only = zpl_opts_has_arg(&opts, "viewer-only");
-    int8_t is_server_only = zpl_opts_has_arg(&opts, "server-only");
-    int32_t seed = (int32_t)zpl_opts_integer(&opts, "seed", DEFAULT_WORLD_SEED);
-    uint16_t world_size = (uint16_t)zpl_opts_integer(&opts, "world-size", DEFAULT_WORLD_SIZE);
-    uint16_t chunk_size = DEFAULT_CHUNK_SIZE; //zpl_opts_integer(&opts, "chunk-size", DEFAULT_CHUNK_SIZE);
-    zpl_string host = zpl_opts_string(&opts, "host", NULL);
-    uint16_t port = (uint16_t)zpl_opts_integer(&opts, "port", 0);
-
-    game_kind play_mode = GAMEKIND_SINGLE;
-
-    if (is_viewer_only) play_mode = GAMEKIND_CLIENT;
-    if (is_server_only) play_mode = GAMEKIND_HEADLESS;
-
-    if (zpl_opts_has_arg(&opts, "random-seed")) {
-        zpl_random rnd={0};
-        zpl_random_init(&rnd);
-        seed = zpl_random_gen_u32(&rnd);
-        zpl_printf("Seed: %u\n", seed);
-    }
-
-    if (zpl_opts_has_arg(&opts, "preview-map")) {
-        generate_minimap(seed, WORLD_BLOCK_SIZE, chunk_size, world_size);
-        return 0;
-    }
-
-    sighandler_register();
-    game_init(host, port, play_mode, 1, seed, chunk_size, world_size, 0);
-	game_setup_ecs();
-    game_run();
-
-    game_shutdown();
-    sighandler_unregister();
-
-    zpl_string_free(host);
-    zpl_opts_free(&opts);
     return 0;
 }

code/games/survival/src/oldmain.c

@@ -0,0 +1,101 @@
+#define ZPL_IMPL
+#include "zpl.h"
+#include "platform/system.h"
+#include "core/game.h"
+#include "game.h"
+#include "models/entity.h"
+#include "world/entity_view.h"
+#include "utils/options.h"
+#include "platform/signal_handling.h"
+#include "platform/profiler.h"
+
+#include "flecs.h"
+#include "flecs/flecs_os_api_stdcpp.h"
+
+#include "models/components.h"
+#include "systems/systems.h"
+
+#include "platform/arch.h"
+
+ZPL_DIAGNOSTIC_PUSH_WARNLEVEL(0)
+#include "tinyc2.h"
+ZPL_DIAGNOSTIC_POP
+
+#define DEFAULT_WORLD_SEED 302097
+#define DEFAULT_CHUNK_SIZE 16 /* amount of blocks within a chunk (single axis) */
+#define DEFAULT_WORLD_SIZE 5 /* amount of chunks within a world (single axis) */
+
+/*
+	TODO
+	- monster spawner
+	- the longer we survive, the more and stronger enemies we spawn
+	- player grows HP by leveling up
+	- XP increases by killing mobs
+	- player can pick an "ability" upon reaching level milestones
+	- abilities: armor/shield, TODO ...
+	- enemies damage player when close to him in ticks (damage effects, ...)
+	- basic projectile pooling (flecs)
+	- somewhat believable world gen, small hamlets with cols, etc
+*/
+
+
+int main(int argc, char** argv) {
+    zpl_opts opts={0};
+    zpl_opts_init(&opts, zpl_heap(), argv[0]);
+
+    zpl_opts_add(&opts, "?", "help", "the HELP section", ZPL_OPTS_FLAG);
+    zpl_opts_add(&opts, "v", "viewer-only", "run viewer-only client", ZPL_OPTS_FLAG);
+    zpl_opts_add(&opts, "d", "server-only", "run dedicated server", ZPL_OPTS_FLAG);
+    zpl_opts_add(&opts, "p", "preview-map", "draw world preview", ZPL_OPTS_FLAG);
+    zpl_opts_add(&opts, "s", "seed", "world seed", ZPL_OPTS_INT);
+    zpl_opts_add(&opts, "r", "random-seed", "generate random world seed", ZPL_OPTS_FLAG);
+    //zpl_opts_add(&opts, "cs", "chunk-size", "amount of blocks within a chunk (single axis)", ZPL_OPTS_INT);
+    zpl_opts_add(&opts, "ws", "world-size", "amount of chunks within a world (single axis)", ZPL_OPTS_INT);
+    zpl_opts_add(&opts, "ip", "host", "host IP address", ZPL_OPTS_STRING);
+    zpl_opts_add(&opts, "port", "port", "port number", ZPL_OPTS_INT);
+
+    uint32_t ok = zpl_opts_compile(&opts, argc, argv);
+
+    if (!ok) {
+        zpl_opts_print_errors(&opts);
+        zpl_opts_print_help(&opts);
+        return -1;
+    }
+
+    int8_t is_viewer_only = zpl_opts_has_arg(&opts, "viewer-only");
+    int8_t is_server_only = zpl_opts_has_arg(&opts, "server-only");
+    int32_t seed = (int32_t)zpl_opts_integer(&opts, "seed", DEFAULT_WORLD_SEED);
+    uint16_t world_size = (uint16_t)zpl_opts_integer(&opts, "world-size", DEFAULT_WORLD_SIZE);
+    uint16_t chunk_size = DEFAULT_CHUNK_SIZE; //zpl_opts_integer(&opts, "chunk-size", DEFAULT_CHUNK_SIZE);
+    zpl_string host = zpl_opts_string(&opts, "host", NULL);
+    uint16_t port = (uint16_t)zpl_opts_integer(&opts, "port", 0);
+
+    game_kind play_mode = GAMEKIND_SINGLE;
+
+    if (is_viewer_only) play_mode = GAMEKIND_CLIENT;
+    if (is_server_only) play_mode = GAMEKIND_HEADLESS;
+
+    if (zpl_opts_has_arg(&opts, "random-seed")) {
+        zpl_random rnd={0};
+        zpl_random_init(&rnd);
+        seed = zpl_random_gen_u32(&rnd);
+        zpl_printf("Seed: %u\n", seed);
+    }
+
+    if (zpl_opts_has_arg(&opts, "preview-map")) {
+        generate_minimap(seed, WORLD_BLOCK_SIZE, chunk_size, world_size);
+        return 0;
+    }
+
+    sighandler_register();
+    game_init(host, port, play_mode, 1, seed, chunk_size, world_size, 0);
+	game_setup_ecs();
+    game_run();
+
+    game_shutdown();
+    sighandler_unregister();
+
+    zpl_string_free(host);
+    zpl_opts_free(&opts);
+    return 0;
+}

foundation.md

@@ -0,0 +1,113 @@
+## Foundation:
+ * platform
+ * viewer system ??
+ * camera
+ * game
+ * debug ui
+ * packet utils
+ * arch
+ * input
+ * profiler
+ * renderer
+ * signal handling
+ * zpl options
+ * gen/textgen -> assets
+ * items
+ * inventory
+ * crafting
+ * notifications
+ * tooltips
+ * chunk
+ * blocks
+ * tiles (and chunk baker)
+ * systems (core systems)
+ * components
+ * net
+ * packets (but add custom messaging, and security)
+ * compression
+ * world
+ * wrold_view
+ * entity_view
+
+
+## Components
+-------
+* app - thing that runs game
+* game - the game stuff, includes client and server
+* packet - structure that has data written/read by client/server
+* asset - structure that describes tile/block/object/entity, something that can be visualized
+* module - a thing that uses a set of ecs components and systems to create a self-contained ecs module
+------------
+* world - a map of chunks within the game world
+* world-view - a representation of the world recreated by the client
+----------
+* chunk - entity that contains set of tiles and blocks
+* tile - basic thing that makes up the chunks
+* block - 2nd level of things that make up the chunk
+* entity - an grid-independant static or dynamic entity that can exist in the world and has some systems controlling it
+    primary archetypes:
+    * item - an entity in the world, that can have a different state when its picked up
+    * object - an item that can be placed in the world
+    * device - an object that can be interacted with
+    * mob - an entity that can be controlled by ai
+    * player - an entity that can be controlled by a player
+    * vehicle - an entity that can be used to transport other entities
+* craft - a recipe that can be used to craft an item
+
+
+## Naming
+
+* zpl.eco
+    * foundation
+    * sandbox
+    * survival
+* prefix: efd_
+
+## Concepts
+    * tile
+    * block
+    * entity
+        * item
+        * object
+        * device
+        * mob
+        * player
+        * vehicle
+    * craft
+
+## Transitions
+* item -> tile (item destroyed, tile replaced)
+* item -> block (item destroyed, block created)
+* item -> entity (item hidden and untracked, entity component added) // item becomes entity, just changes state
+* item -> item (crafting) (item destroyed, item created)
+* tile -> item (tile replaced, item created)
+* block -> item (block destroyed, item created)
+* block -> block (crafting) (block destroyed, block created)
+* entity -> item (entity component removed, item shown and tracked) // entity becomes item, just changes state
+
+## Features
+* In-memory lists
+    * assets
+    * items
+    * crafting recepies
+    * prafabs for entities (pipeline for entities)
+* built in server->client RPC
+* 
+
+
+
+// // register game specific input bindings
+// // pre-defined bindings and controlsets
+// efd_controlset_apply(EFD_ACTION_MOVE, EFD_CONTROLSET_WASD | EFD_CONTROLSET_ARROWS | EFD_CONTROLSET_GAMEPAD_LEFT);
+// efd_controlset_apply(EFD_ACTION_POINT, EFD_CONTROLSET_MOUSE | EFD_CONTROLSET_GAMEPAD_RIGHT);
+
+// // custom bindings and controlsets
+// efd_controlset_keyboard(CONTROLSET_ACCELERATE, EFD_KEY_DOWN, EFD_KEY_SHIFT_LEFT | EFD_KEY_SHIFT_RIGHT);
+// efd_controlset_gamepad(CONTROLSET_ACCELERATE, EFD_GAMEPAD_LEFT_TRIGGER, 0.5f);
+// efd_controlset_apply(EFD_ACTION_SPRINT, CONTROLSET_ACCERLATE);
+
+// // custom input bindings for custom actions
+// efd_controlset_register(ACTION_USE);
+// efd_controlset_keyboard(CONTROLSET_USE, EFD_KEY_DOWN, EFD_KEY_E);
+// efd_controlset_gamepad(CONTROLSET_USE, EFD_GAMEPAD_BUTTON_A, 0.5f);
+// efd_controlset_apply(ACTION_USE, CONTROLSET_USE);