Started with game logic, implemented some draw stuff.

src/player.c

@@ -0,0 +1,21 @@
+#include "player.h"
+#include <color.h>
+
+void player_init(player_t* player) {
+    player->id=0;
+    player->color = GUI_COLOR_BLUE;
+    player->num_positions=1;
+    player->position = (point_t){.x=10,.y=100};
+    player->past_positions[0] = player->position;
+    player->direction = right;
+    player->state = alive;
+}
+
+
+
+
+void player_append_position(player_t* player, point_t point) {
+    if(player->num_positions < max_positions) {
+        player->past_positions[player->num_positions++] = point;
+    } 
+}