Add utility functions

include/utils.h

@@ -0,0 +1,63 @@
+/*
+ * Copyright (c) 2018 Amine Ben Hassouna <amine.benhassouna@gmail.com>
+ * All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any
+ * person obtaining a copy of this software and associated
+ * documentation files (the "Software"), to deal in the
+ * Software without restriction, including without
+ * limitation the rights to use, copy, modify, merge,
+ * publish, distribute, sublicense, and/or sell copies of
+ * the Software, and to permit persons to whom the Software
+ * is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice
+ * shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF
+ * ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
+ * TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
+ * PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
+ * SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+ * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR
+ * IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ */
+
+#ifndef UTILS_H
+#define UTILS_H
+
+#include <SDL2/SDL.h>
+
+
+// Define MAX and MIN macros
+#define MAX(X, Y) (((X) > (Y)) ? (X) : (Y))
+#define MIN(X, Y) (((X) < (Y)) ? (X) : (Y))
+
+
+#define COLOR_BREAKUP(COLOR)    COLOR.r, COLOR.g, COLOR.b, COLOR.a
+
+extern const SDL_Color COLOR_TRANSPARENT;
+extern const SDL_Color COLOR_BLACK;
+extern const SDL_Color COLOR_WHITE;
+extern const SDL_Color COLOR_GRAY;
+extern const SDL_Color COLOR_DARK_GRAY;
+extern const SDL_Color COLOR_LIGHT_GRAY;
+extern const SDL_Color COLOR_RED;
+extern const SDL_Color COLOR_GREEN;
+extern const SDL_Color COLOR_BLUE;
+extern const SDL_Color COLOR_YELLOW;
+
+
+void Utils_setBackgroundColor(SDL_Renderer *renderer, SDL_Color color);
+
+long long Utils_time();
+
+void Utils_randInit();
+int Utils_rand(int min, int max);
+
+#endif // UTILS_H

src/main.c

@@ -33,9 +33,7 @@
 
 #include <SDL2/SDL.h>
 
-// Define MAX and MIN macros
+#include "utils.h"
-#define MAX(X, Y) (((X) > (Y)) ? (X) : (Y))
-#define MIN(X, Y) (((X) < (Y)) ? (X) : (Y))
 
 // Define screen dimensions
 #define SCREEN_WIDTH    800
@@ -102,11 +100,8 @@ int main(int argc, char* argv[])
                     quit = true;
                 }
 
-                // Initialize renderer color white for the background
+                // Set backgroud color
-                SDL_SetRenderDrawColor(renderer, 0xFF, 0xFF, 0xFF, 0xFF);
+                Utils_setBackgroundColor(renderer, COLOR_WHITE);
-
-                // Clear screen
-                SDL_RenderClear(renderer);
 
                 // Set renderer color red to draw the square
                 SDL_SetRenderDrawColor(renderer, 0xFF, 0x00, 0x00, 0xFF);

src/utils.c

@@ -0,0 +1,71 @@
+/*
+ * Copyright (c) 2018 Amine Ben Hassouna <amine.benhassouna@gmail.com>
+ * All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any
+ * person obtaining a copy of this software and associated
+ * documentation files (the "Software"), to deal in the
+ * Software without restriction, including without
+ * limitation the rights to use, copy, modify, merge,
+ * publish, distribute, sublicense, and/or sell copies of
+ * the Software, and to permit persons to whom the Software
+ * is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice
+ * shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF
+ * ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
+ * TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
+ * PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
+ * SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+ * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR
+ * IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ */
+
+#include "utils.h"
+
+#include <time.h>
+
+
+const SDL_Color COLOR_TRANSPARENT   = {0};
+const SDL_Color COLOR_BLACK         = {0, 0, 0, 255};
+const SDL_Color COLOR_WHITE         = {255, 255, 255, 255};
+const SDL_Color COLOR_GRAY          = {100, 100, 100, 100};
+const SDL_Color COLOR_DARK_GRAY     = {30, 30, 30, 30};
+const SDL_Color COLOR_LIGHT_GRAY    = {200, 200, 200, 200};
+const SDL_Color COLOR_RED           = {255, 0, 0, 255};
+const SDL_Color COLOR_GREEN         = {0, 255, 0, 255};
+const SDL_Color COLOR_BLUE          = {0, 0, 255, 255};
+const SDL_Color COLOR_YELLOW        = {0, 255, 255, 255};
+
+void Utils_setBackgroundColor(SDL_Renderer *renderer, SDL_Color color)
+{
+    // Initialize renderer color
+    SDL_SetRenderDrawColor(renderer, color.r, color.g, color.b, color.a);
+
+    // Clear screen
+    SDL_RenderClear(renderer);
+}
+
+long long Utils_time()
+{
+    struct timespec t;
+    clock_gettime(CLOCK_MONOTONIC_RAW, &t);
+    return t.tv_sec * 1000 + t.tv_nsec / 1000000;
+}
+
+void Utils_randInit()
+{
+    srand(time(NULL));
+}
+
+int Utils_rand(int min, int max)
+{
+    return ( rand() % (max + 1) ) + min;
+}