code cleanup + add font support

makefile

@@ -4,8 +4,8 @@ NAME := tetris_clone
 CC := clang
 STD := c17
 LANG = c
-CFLAGS := $(shell pkg-config --cflags sdl2) -Wall -Wextra -Wpedantic -Wno-pointer-arith
-LDFLAGS := $(shell pkg-config --libs sdl2) -lm
+CFLAGS := $(shell pkg-config --cflags sdl2 SDL2_ttf) -Wall -Wextra -Wpedantic -Wno-pointer-arith
+LDFLAGS := $(shell pkg-config --libs sdl2 SDL2_ttf) -lm
 
 ifeq ($(DEBUG),1)
 CFLAGS += -DDEBUG -Og -g

src/errors.c

@@ -15,7 +15,7 @@ void error(ErrorCode const error_code, char const* const format, ...) {
     vsnprintf(buffer, MAX_STR_LEN, format, args);
     va_end(args);
 
-    printf("\033[91mE\033[0m: %s\n", buffer);
+    fprintf(stderr, "\033[91mE\033[0m: %s\n", buffer);
     SDL_ShowSimpleMessageBox(SDL_MESSAGEBOX_ERROR, "something went wrong! :O", buffer, NULL);
 
     exit(error_code);
@@ -29,5 +29,5 @@ void warn(char const* const format, ...) {
     vsnprintf(buffer, MAX_STR_LEN, format, args);
     va_end(args);
 
-    printf("\033[93mW\033[0m: %s\n", buffer);
+    fprintf(stderr, "\033[93mW\033[0m: %s\n", buffer);
 }

src/errors.h

@@ -15,9 +15,14 @@ enum {
     ERROR_SDL_RENDERER = ERROR_SDL | 4,
     ERROR_SDL_RENDERER_INIT = ERROR_SDL_RENDERER | ERROR_INIT,
 
+
     // audio errors
     ERROR_SDL_AUDIO = ERROR_SDL | 8,
     ERROR_SDL_AUDIO_INIT = ERROR_SDL_AUDIO | ERROR_INIT,
+
+    // font errors
+    ERROR_SDL_FONT = ERROR_SDL | 16,
+    ERROR_SDL_FONT_INIT = ERROR_SDL_FONT | ERROR_INIT,
 };
 
 // call when a fatal error has occurred, the program will immediately terminate when called

src/main.c

@@ -4,8 +4,6 @@
 #include <SDL_error.h>
 #include <SDL_events.h>
 #include <SDL_keyboard.h>
-#include <SDL_render.h>
-#include <SDL_video.h>
 #include <stdbool.h>
 #include <stdio.h>
 #include <stdlib.h>
@@ -13,6 +11,7 @@
 #include <time.h>
 
 #include "SDL_timer.h"
+#include "SDL_ttf.h"
 #include "errors.h"
 #include "game/game.h"
 // #include "window/audio.h"
@@ -25,27 +24,21 @@
 
 bool playing = true;
 
-SDL_Window* window = NULL;
-SDL_Renderer* renderer = NULL;
+RenderData render_data = {0};
 GameData game_data = {0};
 
 
 // handles game application initialisation
 static void init(void) {
     // initialize SDL
-    if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_AUDIO) < 0) {
+    if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_AUDIO) < 0)
         error(ERROR_SDL_INIT, "SDL could not initialize! SDL Error: %s", SDL_GetError());
-        return;
-    }
+    if (TTF_Init() != 0)
+        error(ERROR_SDL_FONT_INIT, "the TTF module of SDL could not initialize! TTF Error: %s", TTF_GetError());
 
-    // initialize the renderer
-    if (renderer_init(&window, &renderer) < 0) {
-        error(ERROR_SDL_RENDERER_INIT, SDL_GetError());
-        return;
-    }
-
-    // initialize the game
+    // initialize units
     game_init(&game_data);
+    renderer_init(&render_data, &game_data);
 
     // initialize audio
     // AudioDevice* audio_device = audio_device_init(32000, AUDIO_S16, 1, 4096);
@@ -68,8 +61,7 @@ static void update(void) {
 
     // preform updates
     game_update(&game_data, SDL_GetKeyboardState(NULL));
-    renderer_update(&(RenderData){
-        window, renderer, &game_data});
+    renderer_update(&render_data);
 }
 
 // handles game application quitting

src/window/renderer.c

@@ -11,26 +11,27 @@
 #include "../errors.h"
 #include "../game/game.h"
 #include "../game/tetromino/shapes.h"
+#include "SDL_ttf.h"
 #include "colour8.h"
 #include "renderer.h"
 
 
-int renderer_init(SDL_Window** const window, SDL_Renderer** const renderer) {
-    // create a new window
-    *window = SDL_CreateWindow("tetris clone", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, SCREEN_WIDTH, SCREEN_HEIGHT, SDL_WINDOW_SHOWN);
-    if (*window == NULL) {
-        error(ERROR_SDL_RENDERER_INIT, "Window failed to be created! SDL Error: %s", SDL_GetError());
-        return -1;
-    }
+void renderer_init(RenderData* const render_data, GameData const* const game_data) {
+    SDL_Window* const window = SDL_CreateWindow("tetris clone", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, SCREEN_WIDTH, SCREEN_HEIGHT, SDL_WINDOW_SHOWN);
+    if (window == NULL) error(ERROR_SDL_RENDERER_INIT, "Window failed to be created! SDL Error: %s", SDL_GetError());
 
-    // create a renderer
-    *renderer = SDL_CreateRenderer(*window, -1, SDL_RENDERER_PRESENTVSYNC);
-    if (*renderer == NULL) {
-        error(ERROR_SDL_RENDERER_INIT, "Renderer failed to be created! SDL Error: %s", SDL_GetError());
-        return -1;
-    }
+    SDL_Renderer* const renderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_PRESENTVSYNC);
+    if (renderer == NULL) error(ERROR_SDL_RENDERER_INIT, "Renderer failed to be created! SDL Error: %s", SDL_GetError());
 
-    return 0;
+    TTF_Font* const font = TTF_OpenFont("/usr/share/fonts/TTF/JetBrainsMono-Regular.ttf", 5);
+    if (font == NULL) error(ERROR_SDL_FONT_INIT, "Failed to open font! TTF Error: %s", TTF_GetError());
+
+    // initialize the render data
+    *render_data = (RenderData){
+        game_data,
+        window,
+        renderer,
+        font};
 }
 
 // draws a block at the specified position
@@ -74,7 +75,7 @@ static void render_level(SDL_Renderer* const renderer, GameData const* const dat
     }
 }
 
-void renderer_update(const RenderData* const render_data) {
+void renderer_update(RenderData const* const render_data) {
     SDL_Renderer* const renderer = render_data->renderer;
     GameData const* const game_data = render_data->game_data;
 
@@ -99,3 +100,12 @@ void renderer_update(const RenderData* const render_data) {
 
     SDL_RenderPresent(renderer);
 }
+
+void renderer_free(RenderData* const render_data) {
+    SDL_DestroyRenderer(render_data->renderer);
+    SDL_DestroyWindow(render_data->window);
+    TTF_CloseFont(render_data->font);
+    render_data->renderer = NULL;
+    render_data->window = NULL;
+    render_data->font = NULL;
+}

src/window/renderer.h

@@ -1,5 +1,6 @@
 #pragma once
 #include <SDL_render.h>
+#include <SDL_ttf.h>
 #include <SDL_video.h>
 #include <stdint.h>
 
@@ -15,10 +16,12 @@
 #define BLOCK_HEIGHT  (TET_HEIGHT / ROWS)                    // height of a block
 
 typedef struct {
+    GameData const* game_data;
     SDL_Window* window;
     SDL_Renderer* renderer;
-    GameData* game_data;
+    TTF_Font* font;
 } RenderData;
 
-int renderer_init(SDL_Window** window, SDL_Renderer** renderer);
+void renderer_init(RenderData* render_data, GameData const* game_data);
 void renderer_update(RenderData const* render_data);
+void renderer_free(RenderData* render_data);