From 1ea1fd7899f56258619deeac82b6533200cec263 Mon Sep 17 00:00:00 2001
From: xesf <xesfnet@gmail.com>
Date: Sun, 20 Oct 2024 21:37:37 +0100
Subject: [PATCH] fix memory leaks

---
 src/game.c             |  3 ++-
 src/sample.c           |  5 ++---
 src/system_sdl.c       | 14 +++++---------
 src/system_sdl_mixer.c | 11 ++++++++++-
 4 files changed, 19 insertions(+), 14 deletions(-)

diff --git a/src/game.c b/src/game.c
index 47917d2..ade6755 100644
--- a/src/game.c
+++ b/src/game.c
@@ -89,8 +89,9 @@ void game_introduction() {
     i32 sample_hidden_index = 0;
     u8 *sample_ptr = NULL;
     u32 entry_size = hqr_get_hidden_entry_ptr(&sample_ptr, menu_samples, 0);
-
     sample_play_ptr(HQR_MENU_SAMPLES * 100 + sample_hidden_index, sample_ptr, entry_size, 22050, 0, 0);
+    memory_free(sample_ptr);
+    memory_free(menu_samples);
 }
 
 void game_release(state_t *state) {
diff --git a/src/sample.c b/src/sample.c
index 3ccbba2..3d545d6 100644
--- a/src/sample.c
+++ b/src/sample.c
@@ -43,9 +43,10 @@ void sample_set_position(i32 channel_index, i32 x, i32 y, i32 z, i32 hero_x, i32
 
 void sample_play(i32 index, i32 frequency, i32 repeat, i32 pan) {
     i32 sample_size = 0;
-    u8* sample_ptr;
+    u8* sample_ptr = NULL;
     sample_size = hqr_get_entry_alloc(&sample_ptr, HQR_RESOURCE, index);
     sample_play_position(index, sample_ptr, sample_size, frequency, repeat, 0, 0, 0, -1, 0, 0, 0);
+    memory_free(sample_ptr);
 }
 
 void sample_play_ptr(i32 index, u8* sample_ptr, i32 sample_size, i32 frequency, i32 repeat, i32 pan) {
@@ -71,8 +72,6 @@ void sample_play_position(i32 index, u8* sample_ptr, i32 sample_size, i32 freque
         if (system_mixer_play(sample_ptr, sample_size, channel_index, repeat) == -1)
             printf("Error while playing Sample %d \n", index);
     }
-
-    free(sample_ptr);
 }
 
 void sample_resume() {
diff --git a/src/system_sdl.c b/src/system_sdl.c
index 62344ad..8cb9de8 100644
--- a/src/system_sdl.c
+++ b/src/system_sdl.c
@@ -27,19 +27,13 @@ void system_init(system_t *system, c8 *title, i32 width, i32 height, i32 bpp) {
     SDL_SetRenderLogicalPresentation(system->renderer, width, height, SDL_LOGICAL_PRESENTATION_LETTERBOX);
     SDL_SetRenderDrawColor(system->renderer, 0, 0, 0, 255);
 
-    system->texture = SDL_CreateTexture(
-        system->renderer,
-        SDL_PIXELFORMAT_RGBA8888, // SDL_PIXELFORMAT_INDEX8
-        SDL_TEXTUREACCESS_STATIC,
-        width,
-        height
-    );
-
     SDL_UpdateWindowSurface(system->window);
 }
 
 void system_release(system_t *system) {
     SDL_DestroyTexture(system->texture);
+    SDL_DestroySurface(system->surface);
+    SDL_DestroyPalette(system->palette);
     SDL_DestroyRenderer(system->renderer);
     SDL_DestroyWindow(system->window);
     SDL_Quit();
@@ -102,6 +96,9 @@ void system_create_surface(system_t *system, u8 *front_buffer) {
 
 void system_blit(system_t *system) {
     SDL_RenderClear(system->renderer);
+    if (system->texture) {
+        SDL_DestroyTexture(system->texture);
+    }
     system->texture = SDL_CreateTextureFromSurface(system->renderer, system->surface);
     SDL_RenderTexture(system->renderer, system->texture, NULL, NULL);
 }
@@ -111,7 +108,6 @@ inline void system_flip(system_t *system) {
 }
 
 void system_set_palette(system_t *system, u8 *palette) {
-    // SDL_SetPaletteColors(system->palette, (SDL_Color *)palette, 0, 256);
     for (i32 i = 0; i < 256; i++) {
         system->palette->colors[i].r = palette[i * 3 + 0];
         system->palette->colors[i].g = palette[i * 3 + 1];
diff --git a/src/system_sdl_mixer.c b/src/system_sdl_mixer.c
index 4d2da3a..0000db2 100644
--- a/src/system_sdl_mixer.c
+++ b/src/system_sdl_mixer.c
@@ -54,7 +54,11 @@ inline void system_mixer_set_distance(i32 channel_index, i32 distance) {
 
 inline void system_mixer_load(u8 *sample_ptr, i32 samples_size) {
     SDL_IOStream *rw = SDL_IOFromMem(sample_ptr, samples_size);
+    if (chunk != NULL) {
+        Mix_FreeChunk(chunk);
+    }
     chunk = Mix_LoadWAV_IO(rw, 1);
+    SDL_FlushIO(rw);
 }
 
 inline void system_mixer_free() {
@@ -98,7 +102,11 @@ void system_mixer_music_fade_out(i32 ms) {
 
 inline void system_mixer_load_music(u8 *music_ptr, i32 music_size) {
     SDL_IOStream *rw = SDL_IOFromMem(music_ptr, music_size);
+    if (current_track != NULL) {
+        Mix_FreeMusic(current_track);
+    }
     current_track = Mix_LoadMUS_IO(rw, TRUE);
+    SDL_FlushIO(rw);
 }
 
 i32 system_mixer_free_music() {
@@ -118,8 +126,9 @@ i32 system_mixer_play_music(u8 *music_ptr, i32 music_size, i32 loop) {
 i32 system_mixer_play_music_mp3(c8 *music_file) {
     int error_code = 0;
     current_track = Mix_LoadMUS(music_file);
-    if (current_track == NULL)
+    if (current_track == NULL) {
         printf("Mix_LoadMUS: %s\n", SDL_GetError());
+    }
     error_code = Mix_PlayMusic(current_track, -1);
     if (error_code == -1) {
         printf("Mix_PlayMusic: %s\n", SDL_GetError());