added drawing function

src/assembly.c

@@ -13,6 +13,7 @@
 
 #include "consts.h"
 #include "base.h"
+#include "display.h"
 #include "assembly.h"
 
 void init_empty_board() {
@@ -26,12 +27,10 @@ void init_empty_board() {
     start->prev_2 = NULL;
     start->prev_3 = NULL;
     start->prev_4 = NULL;
-    start->prev_5 = NULL;
     start->next_1 = start;
     start->next_2 = NULL;
     start->next_3 = NULL;
     start->next_4 = NULL;
-    start->next_5 = NULL; 
     start->meta = "start";
 }
 

src/base.c

@@ -37,6 +37,14 @@ bool is_an_integer(char c) {
     return ((int)c >= 48 && (int)c <= 57);
 }
 
+float to_float(int n) {
+    return (float)n ;
+}
+
+float to_int(float n) {
+    return (int)n ;
+}
+
 imgs import_digits(SDL_Renderer* renderer) {
     imgs res;
     res.arr = malloc(sizeof(SDL_Texture*)*10);

src/base.h

@@ -5,10 +5,14 @@ int ln_baseN(int n, int b);
 
 int pw(int x, int n);
 
+bool is_an_integer(char c);
+
+float to_float(int n);
+
+float to_int(float n);
+
 imgs import_digits(SDL_Renderer* renderer);
 
 void free_digits(imgs dgts);
 
-bool is_an_integer(char c);
-
 #endif

src/consts.h

@@ -42,12 +42,10 @@ typedef struct cell {
     struct cell* prev_2 ;
     struct cell* prev_3 ;
     struct cell* prev_4 ;
-    struct cell* prev_5 ;
     struct cell* next_1 ;
     struct cell* next_2 ;
     struct cell* next_3 ;
-    struct cell* next_4 ;
-    struct cell* next_5 ; // I dont wanna deal with free/malloc there pls
+    struct cell* next_4 ; // I dont wanna deal with free/malloc there pls
     char* meta ; // mostly for event spaces (also for hidden blocks)
 } cell ;
 
@@ -100,4 +98,9 @@ static player* players ;
 static imgs* digits ;
 // len is always 10 for this
 
+static int __width__ = 1200 ;
+static int __height__ = 800 ;
+
+static int tile_size = 50 ;
+
 #endif

src/display.c

@@ -12,6 +12,7 @@
 #include <SDL2/SDL_image.h>
 
 #include "consts.h"
+#include "base.h"
 #include "display.h"
 
 void updateRenderer(SDL_Renderer* renderer) {
@@ -69,4 +70,30 @@ void drawNumberToRenderer(SDL_Renderer* renderer, imgs data, int n, int X, int Y
             nIter--;
         }
     }
+}
+
+void draw_cell(SDL_Renderer* renderer, int xmin, int xmax, int ymin, int ymax, cell* cl, int draw_id) {
+    if(cl != NULL && cl->id != draw_id && cl->coord_x - tile_size > xmin && cl->coord_x - tile_size < xmax && cl->coord_y > ymin && cl->coord_y < ymax) {
+        int nxmin = to_int((to_float(cl->coord_x) - to_float(xmin)) * to_float(__width__)) / (to_float(xmax) - to_float(xmin)) ;
+        int nymin = to_int((to_float(cl->coord_y) - to_float(ymin)) * to_float(__height__)) / (to_float(ymax) - to_float(ymin)) ;
+        placeRectToRenderer(renderer, nxmin, nymin, tile_size, tile_size, 255, 255, 255, SDL_ALPHA_OPAQUE);
+
+        cl->id = draw_id ;
+
+        draw_cell(renderer, xmin, xmax, ymin, ymax, cl->prev_1, draw_id);
+        draw_cell(renderer, xmin, xmax, ymin, ymax, cl->prev_2, draw_id);
+        draw_cell(renderer, xmin, xmax, ymin, ymax, cl->prev_3, draw_id);
+        draw_cell(renderer, xmin, xmax, ymin, ymax, cl->prev_4, draw_id);
+
+        draw_cell(renderer, xmin, xmax, ymin, ymax, cl->next_1, draw_id);
+        draw_cell(renderer, xmin, xmax, ymin, ymax, cl->next_2, draw_id);
+        draw_cell(renderer, xmin, xmax, ymin, ymax, cl->next_3, draw_id);
+        draw_cell(renderer, xmin, xmax, ymin, ymax, cl->next_4, draw_id);
+    } else if(cl != NULL) {
+        cl->id = draw_id;
+    }
+}
+
+void draw_board(SDL_Renderer* renderer, int xmin, int xmax, int ymin, int ymax, cell* one_cell) {
+    draw_cell(renderer, xmin, xmax, ymin, ymax, one_cell, one_cell->id +1);
 }

src/display.h

@@ -13,4 +13,8 @@ void drawDigitToRenderer(SDL_Renderer* renderer, imgs data, int digit, int X, in
 
 void drawNumberToRenderer(SDL_Renderer* renderer, imgs data, int n, int X, int Y, int W, int H, int Woffset);
 
+void draw_cell(SDL_Renderer* renderer, int xmin, int xmax, int ymin, int ymax, cell* cl, int draw_id);
+
+void draw_board(SDL_Renderer* renderer, int xmin, int xmax, int ymin, int ymax, cell* one_cell);
+
 #endif