gen_food ok, time need fix

gfx/gfx.c

+/// @file gfx.c
+/// @author Florent Gluck
+/// @date November 6, 2016
+/// Helper routines to render pixels in fullscreen graphic mode.
+/// Uses the SDL2 library.
+
+#include <assert.h>
+#include "gfx.h"
+
+/// Create a fullscreen graphic window.
+/// @param title Title of the window.
+/// @param width Width of the window in pixels.
+/// @param height Height of the window in pixels.
+/// @return a pointer to the graphic context or NULL if it failed.
+struct gfx_context_t* gfx_create(char *title, uint width, uint height, uint32_t *tab) {
+	if (SDL_Init(SDL_INIT_VIDEO) != 0) goto error;
+	SDL_Window *window = SDL_CreateWindow(title, SDL_WINDOWPOS_CENTERED,
+		SDL_WINDOWPOS_CENTERED, width, height, SDL_WINDOW_MAXIMIZED);
+	SDL_Renderer *renderer = SDL_CreateRenderer(window, -1, 0);
+	SDL_Texture *texture = SDL_CreateTexture(renderer, SDL_PIXELFORMAT_ARGB8888,
+			SDL_TEXTUREACCESS_STREAMING, width, height);
+	uint32_t *pixels = tab;
+	struct gfx_context_t *ctxt = malloc(sizeof(struct gfx_context_t));
+
+	if (!window || !renderer || !texture || !pixels || !ctxt) goto error;
+
+	ctxt->renderer = renderer;
+	ctxt->texture = texture;
+	ctxt->window = window;
+	ctxt->width = width;
+	ctxt->height = height;
+	ctxt->pixels = pixels;
+
+	SDL_ShowCursor(SDL_DISABLE);
+	//gfx_clear(ctxt, COLOR_BLACK);
+	return ctxt;
+
+error:
+	return NULL;
+}
+
+/// Draw a pixel in the specified graphic context.
+/// @param ctxt Graphic context where the pixel is to be drawn.
+/// @param x X coordinate of the pixel.
+/// @param y Y coordinate of the pixel.
+/// @param color Color of the pixel.
+void gfx_putpixel(struct gfx_context_t *ctxt, int x, int y, uint32_t color) {
+	if (x < ctxt->width && y < ctxt->height)
+		ctxt->pixels[ctxt->width*y+x] = color;
+}
+
+/// Get a pixel in the specified graphic context.
+/// @param ctxt Graphic context where we want to get the pixel.
+/// @param x X coordinate of the pixel.
+/// @param y Y coordinate of the pixel.
+/// @param color Color of the pixel.
+/// @return color at position x, y.
+uint32_t gfx_getpixel(struct gfx_context_t *ctxt, int x, int y) {
+	assert(x >= 0 && x < ctxt->width && y >= 0 && y < ctxt->height);
+	return ctxt->pixels[ctxt->width*y+x];
+}
+
+/// Clear the specified graphic context.
+/// @param ctxt Graphic context to clear.
+/// @param color Color to use.
+void gfx_clear(struct gfx_context_t *ctxt, uint32_t color) {
+	int n = ctxt->width*ctxt->height;
+	while (n)
+		ctxt->pixels[--n] = color;
+}
+
+/// Display the graphic context.
+/// @param ctxt Graphic context to clear.
+void gfx_present(struct gfx_context_t *ctxt) {
+	SDL_UpdateTexture(ctxt->texture, NULL, ctxt->pixels, ctxt->width*sizeof(uint32_t));
+	SDL_RenderCopy(ctxt->renderer, ctxt->texture, NULL, NULL);
+	SDL_RenderPresent(ctxt->renderer);
+}
+
+/// Destroy a graphic window.
+/// @param ctxt Graphic context of the window to close.
+void gfx_destroy(struct gfx_context_t *ctxt) {
+	SDL_ShowCursor(SDL_ENABLE);
+	SDL_DestroyTexture(ctxt->texture);
+	SDL_DestroyRenderer(ctxt->renderer);
+	SDL_DestroyWindow(ctxt->window);
+	free(ctxt->pixels);
+	ctxt->texture = NULL;
+	ctxt->renderer = NULL;
+	ctxt->window = NULL;
+	ctxt->pixels = NULL;
+	SDL_Quit();
+	free(ctxt);
+}
+
+/// If a key was pressed, returns its key code (non blocking call).
+/// List of key codes: https://wiki.libsdl.org/SDL_Keycode
+/// @return the key that was pressed or 0 if none was pressed.
+SDL_Keycode gfx_keypressed() {
+	SDL_Event event;
+	if (SDL_PollEvent(&event)) {
+		if (event.type == SDL_KEYDOWN)
+			return event.key.keysym.sym;
+	}
+	return 0;
+}
+

gfx/gfx.h

+#ifndef _GFX_H_
+#define _GFX_H_
+
+#include <stdint.h>
+#include <stdbool.h>
+#include <SDL2/SDL.h>
+
+#define MAKE_COLOR(r,g,b) ((uint32_t)b|((uint32_t)g<<8)|((uint32_t)r<<16))
+
+#define COLOR_GET_B(color) (color & 0xff)
+#define COLOR_GET_G(color) ((color >> 8) & 0xff)
+#define COLOR_GET_R(color) ((color >> 16) & 0xff)
+
+#define COLOR_BLACK  0x00000000
+#define COLOR_RED    0x00FF0000
+#define COLOR_GREEN  0x0000FF00
+#define COLOR_BLUE   0x000000FF
+#define COLOR_WHITE  0x00FFFFFF
+#define COLOR_YELLOW 0x00FFFF00
+
+typedef unsigned int  uint;
+typedef unsigned long ulong;
+typedef unsigned char uchar;
+
+struct gfx_context_t {
+	SDL_Window *window;
+	SDL_Renderer *renderer;
+	SDL_Texture *texture;
+	uint32_t *pixels;
+	int width;
+	int height;
+};
+
+extern uint32_t gfx_getpixel(struct gfx_context_t *ctxt, int x, int y);
+extern void gfx_putpixel(struct gfx_context_t *ctxt, int x, int y, uint32_t color);
+extern void gfx_clear(struct gfx_context_t *ctxt, uint32_t color);
+extern struct gfx_context_t* gfx_create(char *text, uint width, uint height, uint32_t *tab);
+extern void gfx_destroy(struct gfx_context_t *ctxt);
+extern void gfx_present(struct gfx_context_t *ctxt);
+extern SDL_Keycode gfx_keypressed();
+
+#endif

main.c

+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+#include <unistd.h>
+#include "gfx/gfx.h"
+#include "queue/queue_ptr_int.h"
+#include "snake.h"
+#define SCREEN_W 500
+#define SCREEN_H 500
+
+/* int main(){
+    tant que (jeu pas fini){
+        lire_clavier (asdw ou esc);
+        //on bouge et on décide si on a gané mangé perdu
+        avancer(snake); // et grandir si on mange
+        gen_nourriture();
+        affichage();
+        quitter_si_esc;
+    }
+}
+ */
+
+ void print_board(board_t board){
+    for (int i = 0; i< board.size_y; i++){
+        for (int j=0; j< board.size_x; j++){
+            if ( board.pixels[board.size_x*i+j] == WALL){
+                printf("3");
+            }
+            else if (board.pixels[board.size_x*i+j] == SNAKE){
+                printf("1");
+            }
+            else if (board.pixels[board.size_x*i+j] == EMPTY){
+                printf("0");
+            }
+            else if (board.pixels[board.size_x*i+j] == FOOD){
+                printf("2");
+            }
+        }
+        printf("\n");
+    }
+ }
+
+ int main(){
+    struct timespec start, finish;
+    int elapsed; // vars for time func
+
+    snake_t snake = create_snake(SCREEN_W, SCREEN_H);
+    board_t board = create_board(SCREEN_W, SCREEN_H);
+    
+
+    struct gfx_context_t *ctxt = gfx_create("Snake", SCREEN_W, SCREEN_H, board.pixels);
+    if (!ctxt)
+    {
+        fprintf(stderr, "Graphics initialization failed!\n");
+        return EXIT_FAILURE;
+    }
+
+    game_status_t status;
+
+
+    int nb_food = 8;
+    int sec = 5;
+    double total_time;
+
+
+    while(status != WON && status != LOST){
+        clock_gettime(CLOCK_MONOTONIC, &start);
+        gfx_present(ctxt);
+        
+        SDL_Keycode key = gfx_keypressed();
+        if (key == SDLK_ESCAPE)
+        {
+            break;
+        }
+        else if(key == A || key == W || key == S || key == D){
+            snake.dir = key;
+        }
+        status = move(&snake, &board);
+        /* print_board(board);
+        printf("%d\n", queue_count(snake.body));
+        printf("debut %d\n", snake.body.debut->coordinates.x); */
+
+        if (total_time >= sec){
+            gen_food(nb_food, &board);
+            total_time = 0;
+        }
+
+        // Algorithme de mise à jour d'une frame
+        clock_gettime(CLOCK_MONOTONIC, &finish);
+        elapsed = (finish.tv_nsec - start.tv_nsec);
+        total_time += (finish.tv_sec - start.tv_sec);
+        usleep(elapsed / 100);
+    } 
+    gfx_destroy(ctxt);
+    queue_detruire(&snake.body);
+    return 0;
+ }
\ No newline at end of file

queue/queue_ptr_int.c

+#include <stdlib.h>
+#include <stdio.h>
+#include <stdbool.h>
+#include <assert.h>
+#include "queue_ptr_int.h"
+
+
+//Creer une nouvelle queue vide
+queue queue_creer() {
+   queue fa;
+   fa.tete = fa.debut = NULL;
+   return fa;
+}
+
+coord_t init_coord(int x, int y){
+   coord_t coord = {x, y};
+   return coord;
+}
+
+//Inserer un élement en début de queue
+void queue_inserer(queue* fa,coord_t coord) {
+   element* elmt = malloc(sizeof(element));
+   elmt->coordinates = coord;
+   elmt->next = NULL;
+   if (queue_est_vide(*fa)) {
+      fa->tete = elmt;
+   } else {
+      fa->debut->next = elmt; 
+   }
+   fa->debut = elmt;   
+}
+
+//Extraire un élément en tête de queue
+coord_t queue_extraire(queue* fa) {
+   coord_t coord = queue_tete(*fa);
+   element* elmt = fa->tete;
+   fa->tete = fa->tete->next;
+   free(elmt);
+   if (NULL == fa->tete) {
+      fa->debut = NULL;
+   } 
+   return coord;
+}
+
+//Désallouer complètement la queue
+void queue_detruire(queue* fa) {
+   coord_t coord;
+   while (!queue_est_vide(*fa)) {      
+      coord = queue_extraire(fa);
+   }   
+   
+}
+
+//Tester si la queue est vide
+bool queue_est_vide(queue fa) {
+   return (NULL == fa.tete && NULL == fa.debut);
+}
+
+//Consulter l'élément en tête de queue
+coord_t queue_tete(queue fa) {
+   assert(!queue_est_vide(fa));
+   return fa.tete->coordinates;
+}
+
+//Consulter l'élément en début de queue
+coord_t queue_debut(queue fa) {
+   assert(!queue_est_vide(fa));
+   return fa.debut->coordinates;
+}
+
+//Compter le nombre d'éléments de la queue:
+int queue_count(queue fa) {
+   int cnt = 0;
+   if( fa.tete == NULL){
+      return 0;
+   }
+   while (NULL != fa.tete->next) {      
+      fa.tete = fa.tete->next;
+      cnt++;
+   }
+   cnt++;
+   return cnt;
+}
+

queue/queue_ptr_int.h

+/* pour éviter que le précompilateur inclue plusieurs fois le fichier .h */
+#ifndef QUEUE_PTR_INT_H  
+#define QUEUE_PTR_INT_H
+#include <stdbool.h>
+
+typedef struct _coord {
+    int x;
+    int y;
+} coord_t;
+
+/* Utilité du typedef : Element a; <=> struct Element a; */
+typedef struct _element {
+   coord_t coordinates;
+   struct _element* next;
+} element;
+
+typedef struct _queue {
+   element* tete;
+   element* debut;
+} queue;
+
+coord_t init_coord(int x, int y);
+//Créer d'une nouvelle queue vide
+queue queue_creer();
+//Désallouer complètement la queue
+void queue_detruire(queue* fa);
+//Insérer un élement en début de queue
+void queue_inserer(queue* fa,coord_t coord);
+//Extraire un élément de la queue
+coord_t queue_extraire(queue* fa);
+//Consulter l'élément en tête de queue
+coord_t queue_tete(queue fa);
+//Consulter l'élément en début de queue
+coord_t queue_debut(queue fa);
+//Tester si la queue est vide
+bool queue_est_vide(queue fa);
+//Compter le nombre d'éléments de la queue:
+int queue_count(queue fa);
+#endif