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maze_masks/maze_masks_VB.c

@@ -0,0 +1,119 @@
+#include "maze_masks.h"
+
+
+
+/***********************/
+/*+ Fonctions de base +*/
+/***********************/
+
+mask* create_empty_mask(const int hsize, const int vsize) {
+    mask *m = malloc(sizeof(mask));
+    m->hsize = hsize;
+    m->vsize = vsize;
+    m->nbmasked = 0;
+    m->grid = malloc(hsize * vsize * sizeof(bool));
+    for(int i = 0; i < hsize * vsize; i++) {
+        m->grid[i] = false;
+    }
+    return m;
+}
+
+void free_mask(mask *m) {
+    if(m == NULL) {
+        return;
+    }
+    free(m->grid);
+    free(m);
+}
+
+void resize_mask(mask *m, const int hsize, const int vsize) {
+    if (m == NULL) {
+        return;
+    }
+
+    bool *newgrid = malloc(hsize * vsize * sizeof(bool));
+    if (newgrid == NULL) {
+        fprintf(stderr, "resize_mask: erreur d'allocation d'un malloc\n");
+        return;
+    }
+
+    for (int i = 0; i < vsize; i++) {
+        for (int j = 0; j < hsize; j++) {
+            const int old_i = i * m->vsize / vsize;
+            const int old_j = j * m->hsize / hsize;
+            if (old_i < m->vsize && old_j < m->hsize) {
+                newgrid[i * hsize + j] = m->grid[old_i * m->hsize + old_j];
+            } else { //en cas de débordement dû à l'imprécision des arrondis
+                newgrid[i * hsize + j] = true;
+            }
+        }
+    }
+
+    free(m->grid);
+    m->grid = newgrid;
+    m->hsize = hsize;
+    m->vsize = vsize;
+    m->nbmasked = 0;
+    for (int i = 0; i < hsize * vsize; i++) {
+        if (m->grid[i]) {
+            m->nbmasked++;
+        }
+    }
+}
+
+
+
+void print_mask(mask *m) {
+    printf("mask :\n");
+    for(int i = 0; i < m->vsize; i++) {
+        for(int j = 0; j < m->hsize; j++) {
+            printf("%c", m->grid[i * m->hsize + j] ? 'X' : ' ');
+        }
+        printf("\n");
+    }
+}
+
+
+/**************************************/
+/*+ Génération à partir d'un fichier +*/
+/**************************************/
+
+
+mask* read_mask(const char *fillname) {
+    FILE *f = fopen(fillname, "r");
+    if(!f) {
+        return NULL;
+    }
+    int hsize = 0, vsize = 0;
+    char c = fgetc(f);
+    while(c != '\n' && c != EOF){
+        hsize++;
+        c = fgetc(f);
+    }
+    while(c != EOF) {
+        if (c == '\n') {
+            vsize++;
+        }
+        c = fgetc(f);
+    }
+    mask *m = create_empty_mask(hsize, vsize);
+    rewind(f);
+    for(int i = 0; i < vsize; i++) {
+        for(int j = 0; j < hsize; j++) {
+            c = fgetc(f);
+            if(c == 'X') {
+                m->grid[i * hsize + j] = true;
+                m->nbmasked++;
+            }
+            else {
+                m->grid[i * hsize + j] = false;
+            }
+        }
+        fgetc(f);
+    }
+    fclose(f);
+    return m;
+}
+
+
+