13 files changed, 70 insertions, 26 deletions

diff --git a/cmake-build-debug/.ninja_deps b/cmake-build-debug/.ninja_deps
index e470b2a..916dfb7 100644
--- a/cmake-build-debug/.ninja_deps
+++ b/cmake-build-debug/.ninja_deps
diff --git a/cmake-build-debug/.ninja_log b/cmake-build-debug/.ninja_log
index 5112d74..6238597 100644
--- a/cmake-build-debug/.ninja_log
+++ b/cmake-build-debug/.ninja_log
@@ -41,3 +41,36 @@
 392	412	1708393214014392770	pong	145d847d1d840665
 1	396	1708393308953216921	CMakeFiles/pong.dir/main.c.o	9a80167090eb49bb
 396	416	1708393308976217590	pong	145d847d1d840665
+4	481	1708469430797228636	CMakeFiles/pong.dir/main.c.o	9a80167090eb49bb
+481	507	1708469430828228894	pong	145d847d1d840665
+1	424	1708469469734940079	CMakeFiles/pong.dir/main.c.o	9a80167090eb49bb
+425	445	1708469469758942488	pong	145d847d1d840665
+1	401	1708469666722970055	CMakeFiles/pong.dir/main.c.o	9a80167090eb49bb
+1	405	1708470342230273880	CMakeFiles/pong.dir/main.c.o	9a80167090eb49bb
+405	426	1708470342254274648	pong	145d847d1d840665
+2	412	1708470606042235244	CMakeFiles/pong.dir/main.c.o	9a80167090eb49bb
+412	436	1708470606069236036	pong	145d847d1d840665
+1	393	1708470643664338640	CMakeFiles/pong.dir/main.c.o	9a80167090eb49bb
+393	416	1708470643689339373	pong	145d847d1d840665
+1	396	1708470885679442359	CMakeFiles/pong.dir/pong.c.o	5450e2f51d587a40
+1	397	1708470885680442388	CMakeFiles/pong.dir/screen.c.o	f08710f44569f228
+1	401	1708470885685442538	CMakeFiles/pong.dir/main.c.o	9a80167090eb49bb
+401	422	1708470885708443226	pong	145d847d1d840665
+1	386	1708471008943154508	CMakeFiles/pong.dir/screen.c.o	f08710f44569f228
+387	407	1708471008966155204	pong	145d847d1d840665
+1	398	1708471076348194521	CMakeFiles/pong.dir/main.c.o	9a80167090eb49bb
+398	419	1708471076372195247	pong	145d847d1d840665
+1	393	1708471208366179541	CMakeFiles/pong.dir/screen.c.o	f08710f44569f228
+393	413	1708471208388180192	pong	145d847d1d840665
+1	398	1708471235850992557	CMakeFiles/pong.dir/screen.c.o	f08710f44569f228
+398	418	1708471235872993207	pong	145d847d1d840665
+1	390	1708471265641873789	CMakeFiles/pong.dir/screen.c.o	f08710f44569f228
+390	411	1708471265664874470	pong	145d847d1d840665
+1	388	1708471283674407202	CMakeFiles/pong.dir/screen.c.o	f08710f44569f228
+388	409	1708471283697407882	pong	145d847d1d840665
+1	398	1708471441158065652	CMakeFiles/pong.dir/screen.c.o	f08710f44569f228
+398	421	1708471441183066391	pong	145d847d1d840665
+1	390	1708471964877432969	CMakeFiles/pong.dir/pong.c.o	5450e2f51d587a40
+1	394	1708471964881433085	CMakeFiles/pong.dir/screen.c.o	f08710f44569f228
+1	399	1708471964886433232	CMakeFiles/pong.dir/main.c.o	9a80167090eb49bb
+399	420	1708471964909433902	pong	145d847d1d840665
diff --git a/cmake-build-debug/CMakeFiles/pong.dir/main.c.o b/cmake-build-debug/CMakeFiles/pong.dir/main.c.o
index 9212738..7246b75 100644
--- a/cmake-build-debug/CMakeFiles/pong.dir/main.c.o
+++ b/cmake-build-debug/CMakeFiles/pong.dir/main.c.o
diff --git a/cmake-build-debug/CMakeFiles/pong.dir/pong.c.o b/cmake-build-debug/CMakeFiles/pong.dir/pong.c.o
index 6eb6fbf..537be6f 100644
--- a/cmake-build-debug/CMakeFiles/pong.dir/pong.c.o
+++ b/cmake-build-debug/CMakeFiles/pong.dir/pong.c.o
diff --git a/cmake-build-debug/CMakeFiles/pong.dir/screen.c.o b/cmake-build-debug/CMakeFiles/pong.dir/screen.c.o
index 698f29c..916c1c1 100644
--- a/cmake-build-debug/CMakeFiles/pong.dir/screen.c.o
+++ b/cmake-build-debug/CMakeFiles/pong.dir/screen.c.o
diff --git a/cmake-build-debug/Testing/Temporary/LastTest.log b/cmake-build-debug/Testing/Temporary/LastTest.log
index e95b3fe..c5b8150 100644
--- a/cmake-build-debug/Testing/Temporary/LastTest.log
+++ b/cmake-build-debug/Testing/Temporary/LastTest.log
@@ -1,3 +1,3 @@
-Start testing: Feb 19 20:41 EST
+Start testing: Feb 20 18:32 EST
 ----------------------------------------------------------
-End testing: Feb 19 20:41 EST
+End testing: Feb 20 18:32 EST
diff --git a/cmake-build-debug/ball.bmp b/cmake-build-debug/ball.bmp
deleted file mode 100644
index 021e3c2..0000000
--- a/cmake-build-debug/ball.bmp
+++ /dev/null
diff --git a/cmake-build-debug/paddle.bmp b/cmake-build-debug/paddle.bmp
deleted file mode 100644
index 07c416f..0000000
--- a/cmake-build-debug/paddle.bmp
+++ /dev/null
diff --git a/cmake-build-debug/pong b/cmake-build-debug/pong
index b19b205..44db581 100755
--- a/cmake-build-debug/pong
+++ b/cmake-build-debug/pong
diff --git a/main.c b/main.c
index 8ebbf8a..28ed301 100644
--- a/main.c
+++ b/main.c
@@ -1,7 +1,6 @@
 #include "pong.h"
 #include "screen.h"
 #include <time.h>
-#include <math.h>
 
 static uint8_t delay = 5;
 static uint8_t rightScore = 0;
@@ -13,10 +12,18 @@ void Delay ( const uint8_t seconds ) {
         ;
 }
 
+static inline void Update ( const paddle_t rightPaddle, const paddle_t leftPaddle, const ball_t ball ) {
+    SDL_FillRect( gScreenSurface, NULL, SDL_MapRGB( gScreenSurface->format, 0x00, 0x00, 0x00 ) );
+    Draw ( rightPaddle, rightPaddleSurface );
+    Draw ( leftPaddle, leftPaddleSurface );
+    Draw( ball, ballSurface );
+    SDL_UpdateWindowSurface( gWindow );
+}
+
 int main ( void ) {
-    paddle_t leftPaddle = { { 0, 0 }, { 0, 0 }, 16, 48 },
-                rightPaddle = { { SCREEN_WIDTH - 16, 0 }, { 0, 0 }, 16, 48 };
-    ball_t ball = { { SCREEN_WIDTH >> 1, SCREEN_HEIGHT >> 1 }, { 1, 1 }, 16, 16 };
+    paddle_t leftPaddle = { { 0, 0 }, { 0, 0 }, PADDLE_WIDTH, PADDLE_HEIGHT },
+                rightPaddle = { { SCREEN_WIDTH - 16, 0 }, { 0, 0 }, PADDLE_WIDTH, PADDLE_HEIGHT };
+    ball_t ball = { { SCREEN_WIDTH >> 1, SCREEN_HEIGHT >> 1 }, { 1, 1 }, BALL_WIDTH, BALL_HEIGHT };
     bool quit = false;
     SDL_Event e;
     uint8_t volley = 0;
@@ -116,12 +123,9 @@ int main ( void ) {
                         break;
                 }
             }
+            Update( rightPaddle, leftPaddle, ball );
         }
-        SDL_FillRect( gScreenSurface, NULL, SDL_MapRGB( gScreenSurface->format, 0x00, 0x00, 0x00 ) );
-        Draw ( rightPaddle, rightPaddleSurface );
-        Draw ( leftPaddle, leftPaddleSurface );
-        Draw( ball, ballSurface );
-        SDL_UpdateWindowSurface( gWindow );
+        Update( rightPaddle, leftPaddle, ball );
         Delay( delay );
     }
     Close();
diff --git a/pong.c b/pong.c
index cf29b5b..a012971 100644
--- a/pong.c
+++ b/pong.c
@@ -1,15 +1,15 @@
 #include "pong.h"
 #include "screen.h"
 
-inline void UpdatePosition ( point_t * const position, const point_t velocity ) {
+inline void UpdatePosition ( vector_t * const position, const vector_t velocity ) {
     position->x += velocity.x ;
     position->y += velocity.y ;
 }
 
 /* CheckMoveableCollision: Implementation of AABB collision for moveable objects */
 bool CheckMoveableCollision ( const struct moveable_t m1, const struct moveable_t m2 ) {
-    const point_t m1p = m1.position;
-    const point_t m2p = m2.position;
+    const vector_t m1p = m1.position;
+    const vector_t m2p = m2.position;
     const bool checkX = m1p.x + m1.width > m2p.x,
                 checkY = m1p.y + m1.height > m2p.y && m1p.y < m2p.y + m2.height;
     return checkX && checkY;
@@ -32,6 +32,6 @@ bool CheckCeilingCollision ( const struct moveable_t m ) {
 }
 
 void Reset ( ball_t * const ball ) {
-    ball->position = ( point_t ) { SCREEN_WIDTH >> 1, SCREEN_HEIGHT >> 1 };
-    ball->velocity = ( point_t ){ 1, 1 };
+    ball->position = ( vector_t ) { SCREEN_WIDTH >> 1, SCREEN_HEIGHT >> 1 };
+    ball->velocity = ( vector_t ){ 1, 1 };
 }
diff --git a/pong.h b/pong.h
index 8520db3..3bdc715 100644
--- a/pong.h
+++ b/pong.h
@@ -3,15 +3,20 @@
 
 #include <stdint.h>
 
-typedef struct point_t {
+constexpr int PADDLE_WIDTH = 16;
+constexpr int PADDLE_HEIGHT = 128;
+constexpr int BALL_WIDTH = 16;
+constexpr int BALL_HEIGHT = 16;
+
+typedef struct vector_t {
     int32_t x;
     int32_t y;
-} point_t;
+} vector_t;
 
 /* paddles have a fixed x position and velocity */
 struct moveable_t {
-    point_t position;
-    point_t velocity;
+    vector_t position;
+    vector_t velocity;
     uint8_t width;
     uint8_t height;
 };
@@ -19,7 +24,7 @@ struct moveable_t {
 typedef struct moveable_t ball_t;
 typedef struct moveable_t paddle_t;
 
-void UpdatePosition ( point_t * const position, const point_t velocity );
+void UpdatePosition ( vector_t * const position, const vector_t velocity );
 bool CheckMoveableCollision ( const struct moveable_t m1, const struct moveable_t m2 );
 bool CheckLeftWallCollision ( const struct moveable_t m );
 bool CheckRightWallCollision ( const struct moveable_t m );
diff --git a/screen.c b/screen.c
index b00c97e..b346bc5 100644
--- a/screen.c
+++ b/screen.c
@@ -6,7 +6,9 @@ SDL_Surface *ballSurface = NULL;
 SDL_Surface *leftPaddleSurface = NULL;
 SDL_Surface *rightPaddleSurface = NULL;
 
-static SDL_Surface *LoadSurface( const char * const path ) {
+static const char * const SPRITE_PATH = "sprite.bmp";
+
+static SDL_Surface *LoadSurface ( const char * const path ) {
     SDL_Surface *optimizedSurface = NULL;
     SDL_Surface * loadedSurface = SDL_LoadBMP( path );
     if ( loadedSurface == NULL ) {
@@ -37,9 +39,9 @@ bool InitScreen ( void ) {
 
     SDL_FillRect( gScreenSurface, NULL, SDL_MapRGB( gScreenSurface->format, 0x00, 0x00, 0x00 ) );
 
-    ballSurface = LoadSurface( "ball.bmp" );
-    leftPaddleSurface = LoadSurface( "paddle.bmp" );
-    rightPaddleSurface = LoadSurface( "paddle.bmp" );
+    ballSurface = LoadSurface( SPRITE_PATH );
+    leftPaddleSurface = LoadSurface( SPRITE_PATH );
+    rightPaddleSurface = LoadSurface( SPRITE_PATH );
 
     return true;
 }
@@ -60,7 +62,7 @@ void Close ( void ) {
 
 void Draw ( const struct moveable_t m, SDL_Surface * const surface ) {
     SDL_Rect drect = { m.position.x, m.position.y, m.width, m.height };
-    const int status = SDL_BlitSurface( surface, NULL, gScreenSurface, &drect );
+    const int status = SDL_BlitScaled( surface, NULL, gScreenSurface, &drect );
     if ( status < 0 ) {
         printf( "Error with draw! SDL Error: %s\n", SDL_GetError() );
     }