diff --git a/.vscode/settings.json b/.vscode/settings.json
index f314253..eaa918d 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -2,6 +2,7 @@
     "files.associations": {
         "ncurses.h": "c",
         "stdio.h": "c",
-        "math.h": "c"
+        "math.h": "c",
+        "sdl_image.h": "c"
     }
 }
\ No newline at end of file
diff --git a/bin/back b/bin/back
index 1559060..b31b648 100755
Binary files a/bin/back and b/bin/back differ
diff --git a/obj/base.o b/obj/base.o
index b28fbe8..133f544 100644
Binary files a/obj/base.o and b/obj/base.o differ
diff --git a/obj/display.o b/obj/display.o
index f116f47..8160256 100644
Binary files a/obj/display.o and b/obj/display.o differ
diff --git a/obj/hash.o b/obj/hash.o
index 6d1374f..9bd57e8 100644
Binary files a/obj/hash.o and b/obj/hash.o differ
diff --git a/obj/main.o b/obj/main.o
index c5cdc7f..e18d15d 100644
Binary files a/obj/main.o and b/obj/main.o differ
diff --git a/obj/move.o b/obj/move.o
index 15d3f02..8276ed6 100644
Binary files a/obj/move.o and b/obj/move.o differ
diff --git a/src/base.c b/src/base.c
index 7d3fd3e..a040a1f 100644
--- a/src/base.c
+++ b/src/base.c
@@ -109,66 +109,6 @@ int str_to_int(char* s) {
     return res;
 }
 
-int get_integer(FILE* ptr) {
-    char c = fgetc(ptr);
-
-    int res = 0 ;
-    int sign = 1;
-
-    if(c == '-') {
-        sign = -1;
-        c = fgetc(ptr);
-    };
-
-    while(is_an_integer(c)) {
-        res = 10*res + (int)c - 48;
-        c = fgetc(ptr);
-    };
-    return (res*sign);
-}
-
-int get_integer_plus_align(FILE* ptr, FILE* ptr2) {
-    char c = fgetc(ptr);
-    char c2 = fgetc(ptr2);
-
-    int res = 0 ;
-    int sign = 1;
-
-    if(c == '-') {
-        sign = -1;
-        c = fgetc(ptr);
-        c2 = fgetc(ptr2);
-    };
-
-    while(is_an_integer(c)) {
-        res = 10*res + (int)c - 48;
-        c = fgetc(ptr);
-        c2 = fgetc(ptr2);
-    };
-    return (res*sign);
-}
-
-int count_char_in_line(FILE* ptr, char target) {
-    int res = 0 ;
-    char c = fgetc(ptr);
-
-    while(c != EOF && c != '\n') {
-        if(c == target) {
-            res += 1;
-        }
-        c = fgetc(ptr);
-    };
-
-    return res;
-}
-
-void terminate_line(FILE* ptr) {
-    char c = fgetc(ptr);
-    while(c != '\n' && c != EOF) {
-        c = fgetc(ptr);
-    }
-}
-
 bool str_equal(char* s1, char* s2) {
     if(s1[0] == '\0' || s2[0] == '\0') {
         return (s1[0] == '\0' && s2[0] == '\0');
diff --git a/src/base.h b/src/base.h
index b29af16..3adcaed 100644
--- a/src/base.h
+++ b/src/base.h
@@ -13,10 +13,6 @@ double to_double(int n);
 int to_int(double n);
 int line_count(char* filename);
 int str_to_int(char* s);
-int get_integer(FILE* ptr);
-int get_integer_plus_align(FILE* ptr, FILE* ptr2);
-int count_char_in_line(FILE* ptr, char c);
-void terminate_line(FILE* ptr);
 bool str_equal(char* s1, char* s2);
 
 cube_0 create_cube_0(double x, double y, double z, double w, double h, double d, int r, int g, int b);
diff --git a/src/hash.c b/src/hash.c
index ea62a13..1951cfc 100644
--- a/src/hash.c
+++ b/src/hash.c
@@ -11,9 +11,66 @@
 #include <SDL2/SDL.h>
 #include <SDL2/SDL_image.h>
 
+#include "structure.h"
 #include "hash.h"
 
-// Cantor pairing function
+// ------------------------------------------------------------------------------------------------------- //
+
+bool linkedList_mem(linkedList lst, int chx, int chy) {
+    if(lst == NULL) {
+        return false ;
+    } else if(lst->chx == chx && lst->chy == chy) {
+        return true ;
+    }
+    return linkedList_mem(lst->next, chx, chy) ;
+}
+
+room linkedList_find(linkedList lst, int chx, int chy) {
+    if(lst == NULL) {
+        fprintf(stderr, "ERROR : (%d, %d) is not a valid key in hash\n", chx, chy);
+        exit(1);
+    } else if(lst->chx == chx && lst->chy == chy) {
+        return *(lst->area) ;
+    }
+    return linkedList_find(lst->next, chx, chy) ;
+}
+
+room* linkedList_find_opt(linkedList lst, int chx, int chy) {
+    if(lst == NULL) {
+        return NULL ;
+    } else if(lst->chx == chx && lst->chy == chy) {
+        return (lst->area) ;
+    }
+    return linkedList_find_opt(lst->next, chx, chy) ;
+}
+
+void linkedList_add(linkedList lst, int chx, int chy, room* area) {
+    if(lst == NULL) {
+        fprintf(stderr, "ERROR : cannot add to NULL\n");
+        exit(1) ;
+    } else if(lst->next == NULL) {
+        cell* nex = malloc(sizeof(cell));
+        nex->area = area ;
+        nex->chx = chx ;
+        nex->chy = chy ;
+        nex->next = NULL ;
+        lst->next = nex ;
+    } else {
+        linkedList_add(lst->next, chx, chy, area) ;
+    }
+}
+
+void linkedList_free(linkedList lst) {
+    // frees rooms as well (require all created rooms to be there)
+    if(lst != NULL) {
+        linkedList_free(lst->next);
+        free(lst->area);
+        free(lst);
+    }
+}
+
+// ------------------------------------------------------------------------------------------------------- //
+
 int cantor(int x, int y) {
     return ((x + y) * (x + y + 1) / 2) + y;
 }
@@ -32,165 +89,51 @@ int generate_hash(int x, int y) {
     return cantor(x, y);
 }
 
-void freeGrid(Grid grid) {
-    for (int i = 0; i < grid->capacity; i++) {
-        List list = grid->data[i];
-        while (list != NULL) {
-            List next = list->next;
-            free(list);
-            list = next;
-        }
+hashtbl hashtbl_generate(int initial_size) {
+    hashtbl h = malloc(sizeof(hashtbl_0));
+    h->insertedElts = 0 ;
+    h->tabLength = initial_size ;
+    h->maxInserted = initial_size/2 ;
+    h->tab = malloc(sizeof(linkedList)*initial_size) ;
+    for(int k = 0; k < initial_size; k++) {
+        h->tab[k] = NULL ;
     }
-    free(grid->data);
-    free(grid);
+    return h ;
 }
 
-void subGridInsert(Grid grid, int hash, chunk* elt, int x, int y) {
-    int index = hash % grid->capacity;
-    //printf("               inserting at index [%d]", index);
-    List* data = grid->data;
-    if (data[index] == NULL) {
-        //printf("                   <-->\n");
-        List list = malloc(sizeof(struct List));
-        list->hash = hash;
-        list->x = x;
-        list->y = y;
-        list->elt = elt;
-        list->next = NULL;
-        grid->size++;
-        data[index] = list;
+bool hashtbl_mem(hashtbl tbl, int chx, int chy) {
+    int id = generate_hash(chx, chy)%(tbl->tabLength) ;
+    return linkedList_mem(tbl->tab[id], chx, chy) ;
+}
+
+room hashtbl_find(hashtbl tbl, int chx, int chy) {
+    int id = generate_hash(chx, chy)%(tbl->tabLength) ;
+    return linkedList_find(tbl->tab[id], chx, chy) ;
+}
+
+room* hashtbl_find_opt(hashtbl tbl, int chx, int chy) {
+    int id = generate_hash(chx, chy)%(tbl->tabLength) ;
+    return linkedList_find_opt(tbl->tab[id], chx, chy) ;
+}
+
+void hashtbl_add(hashtbl tbl, int chx, int chy, room* area) {
+    int id = generate_hash(chx, chy)%(tbl->tabLength) ;
+    tbl->insertedElts += 1 ;
+    if(tbl->tab[id] != NULL) {
+        linkedList_add(tbl->tab[id], chx, chy, area);
     } else {
-        //printf("                   <>\n");
-        List list = data[index];
-        while (list->next != NULL && list->hash != hash) {
-            list = list->next;
-        };
-        //printf("                   <>\n");
-        if (list->x == x && list->y == y) {
-            list->elt = elt;
-        } else {
-            List nex = malloc(sizeof(struct List));
-            nex->hash = hash;
-            nex->x = x;
-            nex->y = y;
-            nex->elt = elt;
-            nex->next = NULL;
-            list->next = nex;
-            grid->size++;
-        }
+        linkedList nex = malloc(sizeof(cell));
+        nex->area = area ;
+        nex->chx = chx ;
+        nex->chy = chy ;
+        nex->next = NULL ;
+        tbl->tab[id] = nex ;
     }
 }
 
-void gridInsert(Grid grid, int x, int z, chunk* elt) {
-    if (grid->size >= grid->capacity * grid->loadFactor) {
-        grid->size = 0;
-        grid->capacity *= 2;
-
-        printf("resizing\n");
-
-        List* old_data = grid->data;
-        grid->data = malloc(sizeof(List) * grid->capacity);;
-        for (int i = 0; i < grid->capacity; i++) {
-            grid->data[i] = NULL;
-        };
-        for (int i = 0; i < grid->capacity/2; i++) {
-            List list = old_data[i];
-            while (list != NULL) {
-                subGridInsert(grid, list->hash, list->elt, list->x, list->y);
-                list = list->next;
-            }
-        }
-    };
-
-    int hash = generate_hash(x, z);
-    subGridInsert(grid, hash, elt, x, z);
-}
-
-chunk* gridGet(Grid grid, int x, int z) {
-    int hash = generate_hash(x, z);
-    int index = hash % grid->capacity;
-    List list = grid->data[index];
-    while (list != NULL && (list->x != x || list->y != z)) {
-        list = list->next;
+void hashtbl_free(hashtbl tbl) {
+    for(int k = 0; k < tbl->tabLength; k++) {
+        free(tbl->tab[k]);
     }
-    if (list == NULL) {
-        return NULL;
-    }
-    return list->elt;
-}
-
-bool gridMem(Grid grid, int x, int z) {
-    int hash = generate_hash(x, z);
-    int index = hash % grid->capacity;
-    List list = grid->data[index];
-    while (list != NULL && (list->x != x || list->y != z)) {
-        list = list->next;
-    }
-    if (list == NULL) {
-        return false;
-    }
-    return true;
-}
-
-chunk* gridRemove(Grid grid, int x, int z) {
-    int hash = generate_hash(x, z);
-    int index = hash % grid->capacity;
-    List list = grid->data[index];
-    List prev = NULL;
-    while (list != NULL && list->hash != hash) {
-        prev = list;
-        list = list->next;
-    }
-    if (list == NULL) {
-        return NULL;
-    }
-    chunk* elt = list->elt;
-    if (prev == NULL) {
-        grid->data[index] = list->next;
-    } else {
-        prev->next = list->next;
-    }
-    free(list);
-    grid->size--;
-    return elt;
-}
-
-Grid newGrid() {
-    Grid grid = malloc(sizeof(struct Grid));
-    grid->data = malloc(sizeof(List) * 800);
-    grid->size = 0;
-    grid->capacity = 800;
-    grid->loadFactor = 0.75;
-    for (int i = 0; i < grid->capacity; i++) {
-        grid->data[i] = NULL;
-    }
-    grid->push = &gridInsert;
-    grid->pop = &gridRemove;
-    grid->get = &gridGet;
-    grid->mem = &gridMem;
-    return grid;
-}
- 
-chunk** gridIter(Grid grid) {
-    chunk** array = malloc(sizeof(chunk*) * grid->size);
-    int index = 0;
-    for (int i = 0; i < grid->capacity; i++) {
-        List list = grid->data[i];
-        while (list != NULL) {
-            array[index++] = list->elt;
-            list = list->next;
-        }
-    }
-    return array;
-}
-
-ChunkCoord newChunkCoord(int x, int z) {
-    ChunkCoord coord = malloc(sizeof(struct ChunkCoord));
-    coord->x = x;
-    coord->z = z;
-    return coord;
-}
-
-void freeChunkCoord(ChunkCoord coord) {
-    free(coord);
-}
+    free(tbl);
+}
\ No newline at end of file
diff --git a/src/hash.h b/src/hash.h
index 453276b..c939aea 100644
--- a/src/hash.h
+++ b/src/hash.h
@@ -1,75 +1,26 @@
 // credit to Benoit //
 
-#ifndef GRID_H
-#define GRID_H
+// (int * int) -> room*
+
+#ifndef HASH_H
+#define HASH_H
+#include "structure.h"
 #include <stdbool.h>
 
-typedef struct linkedList {
-    uint8_t coord ;         // coord%8 = x ; coord/16 = y
-    char* flag ;
-    struct linkedList* next ;
-} linkedList ;
-
-typedef struct template {
-    uint8_t id ;
-    uint8_t* lines ;         // len = 8
-
-    bool checkCompat ;
-
-    uint8_t eastsig ;
-    uint8_t westsig ;
-
-    linkedList* meta ;
-} template ;
-
-typedef struct chunk {
-    int16_t chx ;
-    int16_t chy ;
-
-    int draw_id ;
-
-    template chdata ;
-} chunk ;
-
-// 
-
-typedef struct List {
-    int hash;
-    int x;
-    int y;
-    chunk* elt;
-    struct List* next;
-} *List;
-
-typedef struct Grid {
-    List* data;
-    int capacity;
-    int size;
-    double loadFactor;
-    void (*push)(struct Grid *grid, int x, int z, chunk* elt);
-    chunk* (*pop)(struct Grid *grid, int x, int z);
-    chunk* (*get)(struct Grid *grid, int x, int z);
-    bool (*mem)(struct Grid *grid, int x, int z);
-} *Grid;
+bool linkedList_mem(linkedList lst, int chx, int chy);
+room linkedList_find(linkedList lst, int chx, int chy);
+room* linkedList_find_opt(linkedList lst, int chx, int chy);
+void linkedList_add(linkedList lst, int chx, int chy, room* area);
+void linkedList_free(linkedList lst);
 
+int cantor(int x, int y);
 int generate_hash(int x, int y);
 
-Grid newGrid();
-void freeGrid(Grid grid); 
-
-void gridInsert(Grid grid, int x, int z, chunk* elt);
-chunk* gridGet(Grid grid, int x, int z);
-bool gridMem(Grid grid, int x, int z);
-chunk* gridRemove(Grid grid, int x, int z);
-
-chunk** gridIter(Grid grid);
-
-typedef struct ChunkCoord {
-    int x;
-    int z;
-} *ChunkCoord;
-
-ChunkCoord newChunkCoord(int x, int z);
-void freeChunkCoord(ChunkCoord coord);
+hashtbl hashtbl_generate(int initial_size);
+bool hashtbl_mem(hashtbl tbl, int chx, int chy);
+room hashtbl_find(hashtbl tbl, int chx, int chy);
+room* hashtbl_find_opt(hashtbl tbl, int chx, int chy);
+void hashtbl_add(hashtbl tbl, int chx, int chy, room* area);
+void hashtbl_free(hashtbl tbl);
 
 #endif
\ No newline at end of file
diff --git a/src/main.c b/src/main.c
index 4874e5b..5b79a52 100644
--- a/src/main.c
+++ b/src/main.c
@@ -34,6 +34,7 @@ int main(int argc, char** argv) {
     Uint32 render_flags = SDL_RENDERER_ACCELERATED;
     SDL_Renderer* rend = SDL_CreateRenderer(win, -1, render_flags);
     SDL_SetRenderDrawBlendMode(rend, SDL_BLENDMODE_BLEND);
+    
     //-------------------------------------------------------------------------------//
 
     if(SDL_Init(SDL_INIT_AUDIO)) {
diff --git a/src/move.c b/src/move.c
index 52c79b0..32c251e 100644
--- a/src/move.c
+++ b/src/move.c
@@ -67,16 +67,18 @@ void playerActions() {
                 has_changed = true ;
                 switch (event.key.keysym.sym) {
                     case SDLK_z:
-                        camz += speed*cos(rot_hz);
-                        camx -= speed*sin(rot_hz);
+                        camz += speed*cos(rot_hz)*cos(rot_vt);
+                        camx -= speed*sin(rot_hz)*cos(rot_vt);
+                        camy += speed*sin(rot_vt);
                         break;
                     case SDLK_q:
                         camx -= speed*cos(rot_hz);
                         camz -= speed*sin(rot_hz);
                         break;
                     case SDLK_s:
-                        camz -= speed*cos(rot_hz);
-                        camx += speed*sin(rot_hz);
+                        camz -= speed*cos(rot_hz)*cos(rot_vt);
+                        camx += speed*sin(rot_hz)*cos(rot_vt);
+                        camy -= speed*sin(rot_vt);
                         break;
                     case SDLK_d:
                         camx += speed*cos(rot_hz);
diff --git a/src/structure.h b/src/structure.h
index 2abb785..624d31c 100644
--- a/src/structure.h
+++ b/src/structure.h
@@ -20,6 +20,43 @@ struct cube_0 {
 typedef struct cube_0 cube_0 ;
 typedef cube_0* cube ;
 
+typedef struct teleporter {
+    cube_0 hitbox ;
+    int dest_chx ;
+    int dest_chy ;
+    double dest_x ;
+    double dest_y ;
+} teleporter ;
+
+struct room {
+    // (0, 0, 0) = bottom, left and down
+    int chunk_x ;
+    int chunk_y ;
+    cube* map ;
+} ;
+typedef struct room room ;
+
+struct cell {
+    int chx ;
+    int chy ;
+    room* area ;
+    struct cell* next ;
+} ;
+
+typedef struct cell cell ;
+typedef struct cell* linkedList ;
+
+struct hashtbl_0 {
+    int tabLength ;
+    int insertedElts ;
+    int maxInserted ;
+    linkedList* tab ;
+} ;
+typedef struct hashtbl_0 hashtbl_0 ;
+typedef hashtbl_0* hashtbl ;
+
+// ------------------------------------------------ //
+
 extern imgs digits ;
 extern imgs letters ;
 
@@ -34,4 +71,6 @@ extern double tan_fov ;
 
 extern bool has_changed ;
 
+extern hashtbl visited ;
+
 #endif
\ No newline at end of file