From 2f52bb309755e4866666b888619445e20899728b Mon Sep 17 00:00:00 2001
From: Matt <matt@threlfall.dev>
Date: Mon, 6 Oct 2025 01:10:44 +0100
Subject: [PATCH] feat: save world written

---
 code/first.c           |  1 +
 code/game/impl/world.c | 18 ++++++++++++++++++
 code/game/world.h      |  5 +++++
 3 files changed, 24 insertions(+)

diff --git a/code/first.c b/code/first.c
index d80911f..6532887 100644
--- a/code/first.c
+++ b/code/first.c
@@ -75,6 +75,7 @@ int main(int argc, char **argv)
 		game->draw.camera = camera;
 		World *world = M_ArenaPush(arena, World);
     game->world = world;
+    world->arena = arena;
     world->random = Random_Seed(29237489723847);
     world->npcCount = 2;
     for(U32 i = 0; i < world->npcCount; i++) {
diff --git a/code/game/impl/world.c b/code/game/impl/world.c
index 3c36632..6016ace 100644
--- a/code/game/impl/world.c
+++ b/code/game/impl/world.c
@@ -3,6 +3,8 @@
 #include "../player.h"
 #include "../aabb.h"
 #include <SDL3/SDL_events.h>
+#include <SDL3/SDL_keycode.h>
+#include <SDL3/SDL_oldnames.h>
 
 void UpdateWorld(F32 delta, World *world)
 {
@@ -30,6 +32,9 @@ void UpdateNPCs(F32 delta, World *world)
 void ProcessEvents(SDL_Event *event, World *world)
 {
   PlayerInput(event, &world->player);
+  if(event->type == SDL_EVENT_KEY_DOWN && event->key.key == SDLK_F5){
+    SaveWorld(world->arena, world);
+  }
 }
 
 void RenderWorld(World *world, D_Context *draw) {
@@ -69,3 +74,16 @@ void G_WorldDraw(G_State *game, World *world) {
 		}
 	}
 }
+
+void SaveWorld(M_Arena *arena, World *world) {
+  printf("Saving world\n");
+  World *saveWorld = M_ArenaPush(arena, World); 
+  NavMesh *saveNavMesh = M_ArenaPush(arena, NavMesh);
+  M_CopySize(saveWorld, world, sizeof(World));
+  M_CopySize(saveNavMesh, world->navMesh, sizeof(NavMesh));
+  OS_Handle file =FS_FileOpen(S("world.sgdat"), FS_ACCESS_WRITE);
+  FS_FileWrite(file, saveWorld, sizeof(World)+sizeof(NavMesh), 0);
+}
+
+World *load(Str8 levelData) {
+}
diff --git a/code/game/world.h b/code/game/world.h
index be8a8aa..33ca503 100644
--- a/code/game/world.h
+++ b/code/game/world.h
@@ -16,6 +16,8 @@ typedef struct World World;
 #include "bandit.h"
 
 struct World {
+  //// Utils
+  M_Arena *arena;
   //// Static stuff
   NavMesh *navMesh;
   Random random;
@@ -43,4 +45,7 @@ function void UpdateNPCs(F32 delta, World *world);
 function void UpdateNPC(F32 delta, NPC *npc, World *world);
 function void UpdateBandit(F32 delta, Bandit *bandit, World *world);
 
+function World *LoadWorld(Str8 levelData);
+function void SaveWorld(M_Arena *arena, World *world);
+
 #endif  // LD_GAME_WORLD_H_