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All const members are now static const in their header files

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master
Pradana AUMARS 2 years ago
parent 46e9265365
commit c8bd082866
8 changed files with 42 additions and 52 deletions
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23
src/ball.c
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@ -9,11 +9,6 @@ Ball_init(int screen_width, int screen_height, int posX_start)
{
srand(time(NULL));
Ball *b = malloc(sizeof(Ball));
*(int *)&b->BALL_WIDTH = 20;
*(int *)&b->BALL_HEIGHT = 20;
*(int *)&b->BALL_VELOCITY = 7;
*(int *)&b->BALL_ANGLE_MIN_OFFSET = 10;
*(int *)&b->BALL_ANGLE_MAX_OFFSET = 60;
*(int *)&b->BALL_POSX_START = posX_start;
*(int *)&b->SCREEN_WIDTH = screen_width;
*(int *)&b->SCREEN_HEIGHT = screen_height;
@ -26,8 +21,8 @@ Ball_reset(Ball *b, int direction) {
// 120 deg angle with norm horizontal vector
int angle;
do {
angle = rand() % b->BALL_ANGLE_MAX_OFFSET*2 + b->BALL_ANGLE_MAX_OFFSET/2 - 90;
} while (-b->BALL_ANGLE_MIN_OFFSET <= angle && angle <= b->BALL_ANGLE_MIN_OFFSET);
angle = rand() % BALL_ANGLE_MAX_OFFSET*2 + BALL_ANGLE_MAX_OFFSET/2 - 90;
} while (-BALL_ANGLE_MIN_OFFSET <= angle && angle <= BALL_ANGLE_MIN_OFFSET);
if (direction < 0) {
b->posX = b->BALL_POSX_START;
}
@ -35,8 +30,8 @@ Ball_reset(Ball *b, int direction) {
b->posX = b->SCREEN_WIDTH - b->BALL_POSX_START;
}
b->posY = b->SCREEN_HEIGHT/2;
b->velX = -direction * b->BALL_VELOCITY * cos(angle * M_PI / 180);
b->velY = b->BALL_VELOCITY * sin(angle * M_PI / 180);
b->velX = -direction * BALL_VELOCITY * cos(angle * M_PI / 180);
b->velY = BALL_VELOCITY * sin(angle * M_PI / 180);
}
void
@ -48,14 +43,14 @@ Ball_free(Ball *b)
int
Ball_collision(const Ball *b, const Racket *r) {
const int leftB = b->posX;
const int rightB = leftB + b->BALL_WIDTH;
const int rightB = leftB + BALL_WIDTH;
const int upB = b->posY;
const int downB = upB + b->BALL_HEIGHT;
const int downB = upB + BALL_HEIGHT;
const int leftR = r->posX;
const int rightR = leftR + r->RACKET_WIDTH;
const int rightR = leftR + RACKET_WIDTH;
const int upR = r->posY;
const int downR = upR + r->RACKET_HEIGHT;
const int downR = upR + RACKET_HEIGHT;
if(downB <= upR
|| upB >= downR
@ -69,7 +64,7 @@ Ball_collision(const Ball *b, const Racket *r) {
int
Ball_render(const Ball *b, SDL_Renderer *renderer) {
SDL_Rect rect = { b->posX, b->posY, b->BALL_WIDTH, b->BALL_HEIGHT };
SDL_Rect rect = { b->posX, b->posY, BALL_WIDTH, BALL_HEIGHT };
if (SDL_SetRenderDrawColor(renderer, 255, 255, 255, 255) < 0) {
printf("SDL_SetRenderDrawColor failed! SDL_Error: %s\n", SDL_GetError());
return 1;

13
src/ball.h
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@ -6,15 +6,16 @@
#include "racket.h"
static const int BALL_WIDTH = 20;
static const int BALL_HEIGHT = 20;
static const int BALL_VELOCITY = 7;
static const int BALL_ANGLE_MIN_OFFSET = 10;
static const int BALL_ANGLE_MAX_OFFSET = 60;
typedef struct Ball {
const int BALL_WIDTH;
const int BALL_HEIGHT;
const int BALL_VELOCITY;
const int BALL_POSX_START;
const int BALL_ANGLE_MIN_OFFSET;
const int BALL_ANGLE_MAX_OFFSET;
const int SCREEN_WIDTH;
const int SCREEN_HEIGHT;
const int BALL_POSX_START;
int posX;
int posY;
int velX;

18
src/pong.c
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@ -6,20 +6,14 @@ Pong*
Pong_init() {
Pong *p = malloc(sizeof(Pong));
// Cast away the const
*(int *)&p->SCREEN_WIDTH = 640;
*(int *)&p->SCREEN_HEIGHT = 480;
*(int *)&p->BALL_POSX = 100;
*(int *)&p->RACKET_POSX = 50;
p->ball = Ball_init(p->SCREEN_WIDTH, p->SCREEN_HEIGHT, p->BALL_POSX);
p->racketL = Racket_init(p->SCREEN_WIDTH, p->SCREEN_HEIGHT, p->RACKET_POSX, p->SCREEN_HEIGHT/2, SDL_SCANCODE_E, SDL_SCANCODE_D);
p->ball = Ball_init(PONG_SCREEN_WIDTH, PONG_SCREEN_HEIGHT, PONG_BALL_POSX);
p->racketL = Racket_init(PONG_SCREEN_WIDTH, PONG_SCREEN_HEIGHT, PONG_RACKET_POSX, PONG_SCREEN_HEIGHT/2, SDL_SCANCODE_E, SDL_SCANCODE_D);
if (p->racketL == NULL) {
Ball_free(p->ball);
free(p);
return NULL;
}
p->racketR = Racket_init(p->SCREEN_WIDTH, p->SCREEN_HEIGHT, p->SCREEN_WIDTH - p->RACKET_POSX, p->SCREEN_HEIGHT/2, SDL_SCANCODE_I, SDL_SCANCODE_K);
p->racketR = Racket_init(PONG_SCREEN_WIDTH, PONG_SCREEN_HEIGHT, PONG_SCREEN_WIDTH - PONG_RACKET_POSX - RACKET_WIDTH, PONG_SCREEN_HEIGHT/2, SDL_SCANCODE_I, SDL_SCANCODE_K);
if (p->racketR == NULL) {
Ball_free(p->ball);
Racket_free(p->racketL);
@ -27,7 +21,7 @@ Pong_init() {
return NULL;
}
p->window = SDL_CreateWindow( "Pong", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, p->SCREEN_WIDTH, p->SCREEN_HEIGHT, SDL_WINDOW_SHOWN );
p->window = SDL_CreateWindow( "Pong", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, PONG_SCREEN_WIDTH, PONG_SCREEN_HEIGHT, SDL_WINDOW_SHOWN );
if( p->window == NULL )
{
printf( "Window could not be created! SDL_Error: %s\n", SDL_GetError() );
@ -92,14 +86,14 @@ Ball_move(Ball *b, Pong *p)
Ball_reset(b, -1);
}
else if(b->posX + b->BALL_WIDTH > b->SCREEN_WIDTH)
else if(b->posX + BALL_WIDTH > b->SCREEN_WIDTH)
{
p->racketL->score->score++;
Ball_reset(b, 1);
}
b->posY += b->velY;
if ((b->posY < 0) || (b->posY + b->BALL_HEIGHT > b->SCREEN_HEIGHT))
if ((b->posY < 0) || (b->posY + BALL_HEIGHT > b->SCREEN_HEIGHT))
{
b->posY -= b->velY;
b->velY = -b->velY;

9
src/pong.h
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@ -5,17 +5,18 @@
#include "ball.h"
static const int PONG_SCREEN_WIDTH = 640;
static const int PONG_SCREEN_HEIGHT = 480;
static const int PONG_BALL_POSX = 100;
static const int PONG_RACKET_POSX = 50;
typedef struct Pong {
const int SCREEN_WIDTH;
const int SCREEN_HEIGHT;
SDL_Window* window;
SDL_Surface* screenSurface;
SDL_Renderer* renderer;
SDL_Event e;
Ball *ball;
const int BALL_POSX;
Racket *racketL;
const int RACKET_POSX;
Racket *racketR;
} Pong;

14
src/racket.c
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@ -4,15 +4,11 @@ Racket*
Racket_init(int screen_width, int screen_height, int posX, int posY, SDL_Keycode up, SDL_Keycode down)
{
Racket *r = malloc(sizeof(Racket));
*(int *)&r->RACKET_WIDTH = 20;
*(int *)&r->RACKET_HEIGHT = 100;
*(int *)&r->RACKET_VELOCITY = 10;
*(int *)&r->SCREEN_WIDTH = screen_width;
*(int *)&r->SCREEN_HEIGHT = screen_height;
*(int *)&r->posX = posX;
r->posY = posY;
*(int *)&r->vel = 5;
r->score = Score_init(r->posX, 20);
r->score = Score_init(r->posX, RACKET_WIDTH);
if (r->score == NULL) {
free(r);
return NULL;
@ -32,7 +28,7 @@ Racket_free(Racket *r)
int
Racket_render(const Racket *r, SDL_Renderer *renderer) {
SDL_Rect rect = { r->posX, r->posY, r->RACKET_WIDTH, r->RACKET_HEIGHT };
SDL_Rect rect = { r->posX, r->posY, RACKET_WIDTH, RACKET_HEIGHT };
if (SDL_SetRenderDrawColor(renderer, 255, 255, 255, 255) < 0) {
printf("SDL_SetRenderDrawColor failed! SDL_Error: %s\n", SDL_GetError());
return 1;
@ -53,10 +49,10 @@ Racket_handle_event(Racket *r, const Uint8 *keystate) {
void
Racket_move(Racket *r) {
r->posY += r->updown * r->vel;
if ((r->posY < 0) || (r->posY + r->RACKET_HEIGHT > r->SCREEN_HEIGHT))
r->posY += r->updown * RACKET_VELOCITY;
if ((r->posY < 0) || (r->posY + RACKET_HEIGHT > r->SCREEN_HEIGHT))
{
r->posY -= r->updown * r->vel;
r->posY -= r->updown * RACKET_VELOCITY;
}
r->updown = 0;
}

12
src/racket.h
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@ -5,18 +5,18 @@
#include "score.h"
static const int RACKET_WIDTH = 20;
static const int RACKET_HEIGHT = 100;
static const int RACKET_VELOCITY = 5;
typedef struct Racket {
const int RACKET_WIDTH;
const int RACKET_HEIGHT;
const int RACKET_VELOCITY;
const int SCREEN_WIDTH;
const int SCREEN_HEIGHT;
const int posX;
int posY;
const int vel;
Score* score;
const SDL_Keycode up;
const SDL_Keycode down;
int posY;
Score* score;
int updown;
} Racket;

2
src/score.c
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@ -27,7 +27,7 @@ Score_free(Score *s) {
int
Score_render(const Score *s, SDL_Renderer *renderer) {
char score_str[3];
SDL_Rect scoreRect = { s->POSX , s->POSY, 50, 50 };
SDL_Rect scoreRect = { s->POSX , s->POSY, SCORE_WIDTH, SCORE_HEIGHT };
sprintf(score_str, "%i", s->score);
SDL_Surface *scoreSurface = TTF_RenderText_Solid(s->font, score_str, s->textColor);

3
src/score.h
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@ -4,6 +4,9 @@
#include <SDL.h>
#include <SDL_ttf.h>
static const int SCORE_WIDTH = 50;
static const int SCORE_HEIGHT = 50;
typedef struct Score {
const int POSX;
const int POSY;

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