added some new assets and effects

README.md

@@ -64,3 +64,9 @@ The project includes a `Makefile` to automate the compilation process.
 - [ ] Integrate sprite rendering for the player character.
 - [ ] Expand game world with interactive objects.
 - [ ] Add background music and sound effects using `SDL2_mixer`.
+
+## 🔊 Audio Credits
+- dialog-beep.wav: Sound effect from [freesound.org](https://freesound.org/people/nugsano/sounds/842200/) by nugsano
+
+## 🔤 Font Credits
+- font.ttf: Determination Mono Web Font from [FontSpace](https://www.fontspace.com/determination-mono-web-font-f23209)

src/main.c

@@ -3,6 +3,8 @@
 #include <stdbool.h>
 #include <string.h>
 #include <SDL_ttf.h>
+#include <SDL_mixer.h>
+#include <stdlib.h>
 
 /* 
  * Global Constants 
@@ -33,6 +35,11 @@ typedef struct {
     uint32_t last_char_time;    // Timestamp of the last character revealed
     const char* message;        // The string to be displayed
     TTF_Font* font;             // Pointer to the loaded TrueType font
+    Mix_Chunk* beep_chunk;      // Sound effect for each typed character
+    // Screen shake effect
+    float shake_timer;          // Time remaining for shake effect (ms)
+    float shake_duration;       // Total duration of shake effect when triggered (ms)
+    float shake_intensity;      // Current intensity of shake (pixels)
     Player player;              // The player object
 } Game;
 
@@ -53,6 +60,12 @@ bool init_game(Game *game) {
         return false;
     }
 
+    // Initialize SDL_mixer for audio with lower frequency (22050 Hz) to lower pitch of beep
+    if (Mix_OpenAudio(22050, MIX_DEFAULT_FORMAT, 2, 2048) < 0) {
+        printf("SDL_mixer could not open audio! Mix_Error: %s\n", Mix_GetError());
+        return false;
+    }
+
     // Load the font file from assets. Size is 48 for a cinematic look.
     game->font = TTF_OpenFont("assets/font.ttf", 48);
     if (!game->font) {
@@ -61,12 +74,25 @@ bool init_game(Game *game) {
         printf("SUCCESS: Font loaded successfully!\n");
     }
 
+    // Load the beep sound effect
+    game->beep_chunk = Mix_LoadWAV("assets/dialog-beep.wav");
+    if (!game->beep_chunk) {
+        printf("WARNING: Failed to load beep sound! Mix_Error: %s\n", Mix_GetError());
+        // Not critical, continue without sound
+    }
+
     // Setup initial state
     game->is_running = true;
     game->escape_timer = 0.0f;
     game->visible_chars = 0;
     game->last_char_time = SDL_GetTicks();
     game->message = "Hello, human.";
+    // Initialize shake effect
+    game->shake_timer = 0.0f;
+    game->shake_duration = 300.0f; // 300ms shake duration
+    game->shake_intensity = 0.0f;
+    // Seed random number generator for shake effect
+    srand((unsigned int)SDL_GetTicks());
     game->player = (Player){ .x = 100, .y = 100, .speed = 0.5f, .size = 32, .color = {255, 0, 0, 255} };
 
     return true;
@@ -110,12 +136,32 @@ void handle_input(Game *game, float delta_time) {
  * Handles the typewriter timing.
  */
 void update(Game *game) {
+    // UPDATE SHAKE EFFECT:
+    // Decrease shake timer and calculate current intensity
+    if (game->shake_timer > 0.0f) {
+        game->shake_timer -= 16.67f; // Approximate 60 FPS frame time
+        if (game->shake_timer < 0.0f) game->shake_timer = 0.0f;
+        // Calculate intensity based on remaining timer (linear fade out)
+        game->shake_intensity = (game->shake_timer / game->shake_duration) * 4.0f; // Max 4px shake
+    } else {
+        game->shake_intensity = 0.0f;
+    }
+
     // TYPEWRITER LOGIC:
     // Check if enough time has passed since the last letter appeared.
     uint32_t current_time = SDL_GetTicks();
-    if (current_time - game->last_char_time >= 150) { 
+    if (current_time - game->last_char_time >= 333) { // Adjusted timing
         if (game->visible_chars < (int)strlen(game->message)) {
+            // Check if the character to be revealed is a space
+            char current_char = game->message[game->visible_chars];
             game->visible_chars++;
+
+            // Play beep for each character except spaces (already lower pitch due to mixer frequency)
+            if (game->beep_chunk && current_char != ' ') {
+                Mix_PlayChannel(-1, game->beep_chunk, 0);
+                // Trigger shake effect for non-space characters
+                game->shake_timer = game->shake_duration;
+            }
             game->last_char_time = current_time;
         }
     }
@@ -150,11 +196,14 @@ void render(SDL_Renderer *renderer, Game *game) {
             if (surface) {
                 SDL_Texture* texture = SDL_CreateTextureFromSurface(renderer, surface);
                 
-                // CENTER THE TEXT:
+                // CENTER THE TEXT WITH SHAKE:
                 // Subtract half the text width/height from center screen coordinates.
+                // Add shake offset for text jitter effect
+                int shake_offset_x = (rand() % (int)(game->shake_intensity * 2 + 1)) - game->shake_intensity;
+                int shake_offset_y = (rand() % (int)(game->shake_intensity * 2 + 1)) - game->shake_intensity;
                 SDL_Rect text_rect = {
-                    (SCREEN_WIDTH - surface->w) / 2, 
-                    (SCREEN_HEIGHT - surface->h) / 2, 
+                    (SCREEN_WIDTH - surface->w) / 2 + shake_offset_x,
+                    (SCREEN_HEIGHT - surface->h) / 2 + shake_offset_y,
                     surface->w,
                     surface->h
                 };
@@ -202,6 +251,9 @@ int main(int argc, char* args[]) {
 
     // Cleanup memory
     if (game.font) TTF_CloseFont(game.font);
+    if (game.beep_chunk) Mix_FreeChunk(game.beep_chunk);
+    Mix_CloseAudio();
+    Mix_Quit();
     SDL_DestroyRenderer(renderer);
     SDL_DestroyWindow(window);
     TTF_Quit();