Remove core.h, SDL2->SDL3, Makefile cleanup, ansi C, 80 char.

sdl_handmade.h

@@ -1,43 +1,42 @@
 #ifndef SDL_HANDMADE_H
 #define SDL_HANDMADE_H
 
-#include <SDL.h>
+#include <SDL3/SDL.h>
 
-#include "core.h"
 #include "handmade.h"
 
 struct sdl_border_size {
-    int Top;
-    int Bottom;
-    int Left;
-    int Right;
+    int top;
+    int bottom;
+    int left;
+    int right;
 };
 
 struct sdl_window_size {
-    int Width;
-    int Height;
+    int width;
+    int height;
 };
 
 struct sdl_window_position {
-    int X;
-    int Y;
+    int x;
+    int y;
 };
 
 struct offscreen_buffer {
     /* Pixels are always 32-bit and have the bytes in BGRX (little-endian). */
-    SDL_Texture *Texture;
-    void *Memory;
-    int Width;
-    int Height;
-    int Pitch;
+    SDL_Texture *texture;
+    void *memory;
+    int width;
+    int height;
+    int pitch;
 };
 
 struct sdl_sound_output {
-    int SamplesPerSecond;
-    int BytesPerSample;
-    int SecondaryBufferSize;
-    int LatencySampleCount;
-    void *Samples;
+    int samples_per_second;
+    int bytes_per_sample;
+    int secondary_buffer_size;
+    int latency_sample_count;
+    void *samples;
 };
 
 /* TODO: We choose 1024 only because MacOS's MAXPATHLEN says such a value.
@@ -45,11 +44,11 @@ struct sdl_sound_output {
 #define SDL_STATE_PATH_SIZE 1024
 
 struct sdl_state {
-    unsigned long long TotalSize;
-    void *GameMmemoryBlock;
+    unsigned long long total_size;
+    void *game_memory_block;
 
-    char EXEDirPath[SDL_STATE_PATH_SIZE];
-    char DLLPath[SDL_STATE_PATH_SIZE];
+    char exe_dir_path[SDL_STATE_PATH_SIZE];
+    char dll_path[SDL_STATE_PATH_SIZE];
 };
 
 #endif