Major update to implement basic collision

bot/world/entity/player/player.go

@@ -2,14 +2,28 @@ package player
 
 import "github.com/Tnze/go-mc/bot/world/entity"
 
+type Pos struct {
+	X, Y, Z    float64
+	Yaw, Pitch float32
+	OnGround   bool
+}
+
+func (p Pos) PosEqual(other Pos) bool {
+	return p.X == other.X && p.Y == other.Y && p.Z == other.Z
+}
+func (p Pos) LookEqual(other Pos) bool {
+	return p.Yaw == other.Yaw && p.Pitch == other.Pitch
+}
+func (p Pos) Equal(other Pos) bool {
+	return p.PosEqual(other) && p.LookEqual(other) && p.OnGround == other.OnGround
+}
+
 // Player includes the player's status.
 type Player struct {
 	entity.Entity
 	UUID [2]int64 //128bit UUID
 
-	X, Y, Z    float64
-	Yaw, Pitch float32
-	OnGround   bool
+	Pos Pos
 
 	HeldItem int //拿着的物品栏位