1 files changed, 54 insertions, 4 deletions

diff --git a/src/sdl/main.c b/src/sdl/main.c
index 40896e2..0d492a5 100644
--- a/src/sdl/main.c
+++ b/src/sdl/main.c
@@ -17,6 +17,8 @@
 #include "sounds.h"
 
 #define WINDOW_TITLE "Pablotron Sokoban"
+#define WINDOW_WIDTH 800
+#define WINDOW_HEIGHT 600
 
 static TTF_Font *
 load_font(
@@ -45,11 +47,34 @@ load_font(
 }
 
 static void
+draw_to_fade_tex(
+  draw_ctx_t * const draw_ctx
+) {
+  // set render target
+  if (SDL_SetRenderTarget(draw_ctx->renderer, draw_ctx->fade_tex)) {
+    die("SDL_SetRenderTarget(): %s", SDL_GetError());
+  }
+
+  // draw
+  draw(draw_ctx);
+
+  // clear render target
+  if (SDL_SetRenderTarget(draw_ctx->renderer, NULL)) {
+    die("SDL_SetRenderTarget(): %s", SDL_GetError());
+  }
+}
+
+static void
 set_level(
   draw_ctx_t * const draw_ctx,
   sok_ctx_t * const ctx,
   const size_t level_num
 ) {
+  if (level_num) {
+    // draw current level to fade texture
+    draw_to_fade_tex(draw_ctx);
+  }
+
   // get level data
   draw_ctx->level = levels_get_level(level_num);
 
@@ -58,6 +83,11 @@ set_level(
     die("Couldn't load level %d", (int) level_num);
   }
 
+  if (level_num) {
+    // set fade ticks
+    draw_ctx->fade_ticks = SDL_GetTicks();
+  }
+
   // log level title
   SDL_Log(
     "Loaded level \"%s: %s\" (#%d)",
@@ -167,8 +197,8 @@ int main(int argc, char *argv[]) {
     WINDOW_TITLE,
     SDL_WINDOWPOS_UNDEFINED,
     SDL_WINDOWPOS_UNDEFINED,
-    800,
-    600,
+    WINDOW_WIDTH,
+    WINDOW_HEIGHT,
     SDL_WINDOW_RESIZABLE
   );
 
@@ -198,8 +228,28 @@ int main(int argc, char *argv[]) {
     .zoom       = &zoom,
     .theme      = theme_get_default(),
     .bump_ticks = SDL_GetTicks() - 5000,
+    .fade_ticks = SDL_GetTicks() - 5000,
   };
 
+  // create fade texture
+  draw_ctx.fade_tex = SDL_CreateTexture(
+    renderer,
+    SDL_PIXELFORMAT_RGBA32,
+    SDL_TEXTUREACCESS_TARGET,
+    WINDOW_WIDTH,
+    WINDOW_HEIGHT
+  );
+
+  // set fade texture blend mode
+  if (SDL_SetTextureBlendMode(draw_ctx.fade_tex, SDL_BLENDMODE_BLEND)) {
+    die("SDl_SetTextureBlendMode(): %s", SDL_GetError());
+  }
+
+  // check for error
+  if (!draw_ctx.fade_tex) {
+    die("SDL_CreateTexture(): %s", SDL_GetError());
+  }
+
   // set level
   set_level(&draw_ctx, &ctx, level_num);
 
@@ -259,7 +309,7 @@ int main(int argc, char *argv[]) {
       case ACTION_NEXT:
         if (sok_ctx_is_done(&ctx)) {
           // play sound
-          sound_play(sounds, ASSET_SOUND_JUMP_0_WAV);
+          sound_play(sounds, ASSET_SOUND_POWERUP_1_WAV);
 
           // advance level
           level_num++;
@@ -285,7 +335,7 @@ int main(int argc, char *argv[]) {
       case ACTION_WARP:
         if (warp_buf_get(&warp_buf, &level_num)) {
           // play sound
-          sound_play(sounds, ASSET_SOUND_JUMP_0_WAV);
+          sound_play(sounds, ASSET_SOUND_POWERUP_1_WAV);
 
           // load level
           set_level(&draw_ctx, &ctx, level_num);