Now you can change FPS at make.

Makefile

@@ -1,4 +1,5 @@
 CC=clang
+DFLAGS=
 FLAGS=-Wall -Wextra -g
 LIBS=-I/opt/homebrew/include -I/opt/homebrew/include/SDL2 -L/opt/homebrew/lib -lSDL2 -lSDL2_ttf
 
@@ -6,8 +7,8 @@ all: clean build
 
 build: pingpong
 
-pingpong: pingpong.c
-	${CC} ${FLAGS} ${LIBS} pingpong.c -o pingpong
+pingpong: pingpong.c queue.c
+	${CC} ${FLAGS} ${DFLAGS} ${LIBS} pingpong.c queue.c -o pingpong
 
 clean:
 	rm -rf pingpong.dSYM pingpong

README.md

@@ -1,8 +1,19 @@
 # Build
 For MacOS:
-`make`
+
+```
+make
+
+```
+
+# FPS
+```
+make DFLAGS="-D FPS=30"
+```
 
 For other platforms modify flags in the Makefile.
 
 # Run
-`./pingpong`
+```
+./pingpong
+```