Let me deal you a hand

card.c

@@ -1,6 +1,5 @@
 #include <stdio.h>
 #include <stdlib.h>
-#include <time.h>
 #include "card.h"
 
 static Vector2 card_size = (Vector2) { CARD_WIDTH, CARD_HEIGHT };
@@ -12,14 +11,19 @@ void draw_card(Card *c, Texture2D *cards_texture) {
   int pos_vert = i_vert * CARD_HEIGHT;
   int pos_horiz = i_horiz * CARD_WIDTH;
 
-  DrawTexturePro(
-		 *cards_texture,
-		 (Rectangle) { pos_horiz, pos_vert, CARD_WIDTH, CARD_HEIGHT },
-		 (Rectangle) { c->position.x, c->position.y, card_size.x, card_size.y },
-		 (Vector2) { 0, 0 },
-		 0.,
-		 RAYWHITE
-		 );
+  if (c->visible) {
+    DrawTexturePro(
+		   *cards_texture,
+		   (Rectangle) { pos_horiz, pos_vert, CARD_WIDTH, CARD_HEIGHT },
+		   (Rectangle) { c->position.x, c->position.y, card_size.x, card_size.y },
+		   (Vector2) { 0, 0 },
+		   0.,
+		   RAYWHITE
+		   );
+  } else {
+    DrawRectangleRec((Rectangle) { c->position.x, c->position.y, card_size.x, card_size.y }, BLACK);
+  }
+
   if (c->selected) {
     DrawCircle(c->position.x + 10, c->position.y + 10, 10, BLUE);
   }
@@ -31,7 +35,6 @@ bool point_within_card(Card *c, Vector2 point) {
 }
 
 void shuffle_hand(Hand *h) {
-  srand(time(NULL));
   Card *swap;
   for (int i = h->count - 1; i >= 0; i--) {
     int index = rand() % (i + 1);
@@ -40,3 +43,16 @@ void shuffle_hand(Hand *h) {
     h->cards[index] = swap;
   }
 }
+
+void add_to_hand(Hand *h, Card *c) {
+  h->cards[h->count++] = c;
+  c->position = (Vector2) { h->position.x + (h->count * (CARD_WIDTH + 10)), h->position.y };
+}
+
+void deal(Hand *from, Hand *to, int count) {
+  for (int i = 0; i < count; i++) {
+    Card *t = from->cards[from->count - 1];
+    add_to_hand(to, t);
+    from->count--;
+  }
+}

card.h

@@ -46,15 +46,18 @@ struct Card {
   Month month;
   Vector2 position;
   bool selected;
+  bool visible;
 };
 
 struct Hand {
   Card *cards[48];
   int count;
+  Vector2 position;
 };
 
 void draw_card(Card *c, Texture2D *cards_texture);
 bool point_within_card(Card *c, Vector2 v);
 void shuffle_hand(Hand *h);
+void deal(Hand *from, Hand *to, int count);
 
 #endif

game.c

@@ -11,6 +11,7 @@ char teyaku_calculation[400];
 char dekiyaku_calculation[400];
 
 void initialize_game(Game *g) {
+  g->deck.count = 0;
   g->should_close = false;
   for (int i = 0; i < 48; i++) {
     CardType t = CHAFF;
@@ -47,13 +48,31 @@ void initialize_game(Game *g) {
     case 41:
       t = ANIMAL; break;
     }
-    g->cards[i] = (Card) { i, t, rt, month, (Vector2) { month * 75, (i % 4) * 123 }, false };
+    g->cards[i] = (Card) { i, t, rt, month, (Vector2) { 800, 100 }, false, false };
     g->deck.cards[i] = &g->cards[i];
     g->deck.count++;
   }
 
   shuffle_hand(&g->deck);
 
+  g->player_hand.count = 0;
+  g->player_hand.position = (Vector2) { 20, 450 };
+  g->right_hand.count = 0;
+  g->right_hand.position = (Vector2) { 20, 100 };
+  g->left_hand.count = 0;
+  g->left_hand.position = (Vector2) { 20, 300 };
+
+  deal(&g->deck, &g->player_hand, 4);
+  deal(&g->deck, &g->right_hand, 4);
+  deal(&g->deck, &g->left_hand, 4);
+  deal(&g->deck, &g->player_hand, 3);
+  deal(&g->deck, &g->right_hand, 3);
+  deal(&g->deck, &g->left_hand, 3);
+
+  for (int i = 0; i < g->player_hand.count; i++) {
+    g->player_hand.cards[i]->visible = true;
+  }
+
   strcpy(teyaku_calculation, "");
   strcpy(dekiyaku_calculation, "");
 
@@ -63,7 +82,8 @@ void initialize_game(Game *g) {
 }
 
 bool stale_calculation = true;
-void run_frame(Game *g) {
+
+void handle_input(Game *g) {
   if (IsMouseButtonPressed(0)) {
     mouse_pos = GetMousePosition();
     for (int i = 0; i < 48; i++) {
@@ -74,7 +94,10 @@ void run_frame(Game *g) {
       }
     }
   }
+}
 
+void run_frame(Game *g) {
+  handle_input(g);
   int num_selected = 0;
   if (stale_calculation) {
     Hand h;

main.c

@@ -2,6 +2,7 @@
 #include <stdio.h>
 #include <stdbool.h>
 #include <string.h>
+#include <time.h>
 
 #include <raylib.h>
 
@@ -11,14 +12,15 @@ char *text = "こんにちわ、 世界！";
 Texture2D cards_texture;
 
 int main(int argc, char** argv) {
-    InitWindow(900, 600, "Hanafuda Hachi-Hachi");
-    SetTargetFPS(60);
+  srand(time(NULL));
+  InitWindow(900, 600, "Hanafuda Hachi-Hachi");
+  SetTargetFPS(60);
 
-    Game g;
-    initialize_game(&g);
+  Game g;
+  initialize_game(&g);
 
-    run_until_closing(&g);
+  run_until_closing(&g);
       
-    CloseWindow();
-    return 0;
+  CloseWindow();
+  return 0;
 }