Only draw the tiles you need to

level.c

@@ -36,17 +36,20 @@ void init_level(Game *g, Level *l, char *filepath) {
 }
 
 Color COLORS[4] = {BLACK, DARKGRAY, GRAY, LIGHTGRAY};
-void draw_tile(Level *l, int x, int y) {
+void draw_tile(Level *l, float x, float y) {
-  size_t index = x + (y * l->width);
+  size_t index = (size_t)(x + (y * l->width)) % l->data_size;
-  size_t data = l->data[index] & 3;
+  size_t data = l->data[index];
   Color c = COLORS[data];
   DrawRectangle(x * 32, y * 32, 32, 32, c);
 }
 
 void draw_level(Level *l) {
   Camera2D *camera = l->game->camera;
+  float y = l->game->player->position.y;
+  y /= 32;
+
   for (int i = 0; i < l->width; i++) {
-    for (int j = 0; j < l->length; j++) {
+    for (int j = y - 15; j < y + 15; j++) {
       draw_tile(l, i, j);
     }
   }

player.c

@@ -36,6 +36,7 @@ void handle_player_input(Player *p) {
 
 void draw_player(Player *p) {
   DrawTextureRec(p->spritesheet, (Rectangle) { 128, 128, 128, 128 }, (Vector2) { p->position.x - 64, p->position.y - 29 }, WHITE);
+  DrawRectangle(p->position.x, p->position.y, 5, 5, BLUE);
 }
 
 void move_player(Player *p) {
@@ -68,7 +69,7 @@ void move_player(Player *p) {
   if (too_far_left) {
     p->game->camera->offset.x = p->position.x;
   } else if (too_far_right) {
-    p->game->camera->offset.x = p->position.x - 800;
+    p->game->camera->offset.x = p->position.x - level_width_in_pixels + 800;
   } else {
     p->game->camera->offset.x = 400;
     p->game->camera->offset.y = 275;