From 59dd4d68c95142ceca1539491b0017985bd96357 Mon Sep 17 00:00:00 2001
From: Preston Pan <preston@nullring.xyz>
Date: Mon, 6 Feb 2023 12:03:16 -0800
Subject: add compiler flags for warnings for bad practice; snake game now gets
 harder the longer you go

---
 Makefile | 4 +++-
 snake.c  | 5 ++++-
 snake.h  | 2 +-
 3 files changed, 8 insertions(+), 3 deletions(-)

diff --git a/Makefile b/Makefile
index b4f7654..8a8265b 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,6 @@
-CFLAGS=-I. -pthread -Wall -Wextra -std=c99 -Wpedantic
+CFLAGS=-I. -pthread -Wall -Wextra -Wpedantic -std=c99 -march=native -O3
+CFLAGS+=  -Wshadow -Wstrict-prototypes -Wundef -Wpointer-arith -Wcast-align -Wstrict-overflow=5 -Wswitch-default
+CFLAGS+= -Wunreachable-code -Wswitch-enum -Wformat=2
 PREFIX ?= /usr
 BINDIR ?= ${PREFIX}/bin
 MANDIR = ${PREFIX}/share/man/
diff --git a/snake.c b/snake.c
index ec1f79f..5a021a5 100644
--- a/snake.c
+++ b/snake.c
@@ -18,7 +18,7 @@ volatile sig_atomic_t INT_CTRL_C = 0; //flag for ctrl-c interrupt
 int SCORE = 0;
 
 int boardSize = 15;
-const int updateInterval = 300000000L;
+int updateInterval = 300000000L;
 
 vectorp_t snakePositions; 
 vector_t foodPos;
@@ -115,6 +115,9 @@ int main(int argc, char **argv) {
 		if((snakePositions.vectors[0].mx + lastMoveDir.mx == foodPos.mx) && (snakePositions.vectors[0].my + lastMoveDir.my == foodPos.my)) {
 			ateFood = 1;
 			SCORE = SCORE + 1;
+			if (updateInterval > 50000000) {
+				updateInterval -= 20000000;
+			}
 			//move the food
 			while(1) {
 				foodPos = init_vector(1 + (rand() % (boardSize - 2)), 1 + (rand() % (boardSize - 2)));
diff --git a/snake.h b/snake.h
index 9675a17..3663456 100644
--- a/snake.h
+++ b/snake.h
@@ -8,5 +8,5 @@ typedef struct ThreadArg {
 void* get_dir_loop(void* threadArg);
 vector_t parse_dir(char cDir);
 vectorp_t move_snake(vector_t dir, int lengthen);
-void draw_board();
+void draw_board(void);
 #endif
-- 
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