Third Person Movement In Unity 6 (Beginner Tutorial) — Transcript

Full transcript

1. 0:00In this video, I'll show you how to
2. 0:01create this simple third-person
3. 0:02controller where you can look around and
4. 0:04jump and all of that stuff. So, let's
5. 0:06begin.
6. 0:07But, we'll start right here with a very
7. 0:09basic scene. All I have is a ground
8. 0:11right here. It literally has nothing.
9. 0:12It's just a cube. But, what I'll do is
10. 0:14right click over here and go to 3D
11. 0:16object and choose a capsule. This will
12. 0:18be the player. I'll just call it player
13. 0:20and I'll put it at 000 and just a bit up
14. 0:23like that. Then, I'll just drag my red
15. 0:24material onto that so I can see the
16. 0:26player better. Then, hopefully you also
17. 0:28have a main camera. Drag this onto the
18. 0:30player. Just put it at 000 for the
19. 0:33player. It doesn't really matter because
20. 0:34we'll handle it all with code. And now,
21. 0:36what we can do is right click and create
22. 0:38a new mono behavior script which I'll
23. 0:40just call third-person controller.
24. 0:43Open that up. In here, let's delete the
25. 0:45start function and then at the top, we
26. 0:47will be using UnityEngine.InputSystem
27. 0:51like so. And then, we'll add these
28. 0:52brackets above the class where we will
29. 0:54write require component and type of
30. 0:57rigid body. So, when we add this script
31. 0:59onto the player, it will automatically
32. 1:01also add a rigid body. Now, let's add a
33. 1:03public transform called cam. We also
34. 1:06need a public float called move speed.
35. 1:09I'll set this to maybe six. And let's do
36. 1:11a public float called [music] jump
37. 1:13force. So, how high we jump. I'll set
38. 1:16this to a seven.
39. 1:17Let's add a public float called mouse
40. 1:20sensitivity. I'll set this to 0.12.
41. 1:24We'll also have a public float called
42. 1:26camera distance. I'll set this to, let's
43. 1:29say, five. And a public float called
44. 1:32camera height. So, how high it is above
45. 1:34the player. I'll set this to a 1.6. Now,
46. 1:37we just need a private rigid body called
47. 1:39RB, a private float called yaw, and a
48. 1:42private float called pitch. These will
49. 1:45be the values for our camera when it
50. 1:47looks around. Then, let's add an awake
51. 1:49function and in here, we'll simply do RB
52. 1:51equals get component rigid body so we
53. 1:53have the rigid body. Then, we can have
54. 1:55an RB.freezeRotation
55. 1:57to be true so the player doesn't fall
56. 2:00over and we'll have a cursor.lockState
57. 2:03equals cursor lock mode.locked
58. 2:06so that our cursor is locked to the
59. 2:08middle of the screen. This will
60. 2:09automatically also hide the mouse. Now
61. 2:11under these we'll also have a fixed
62. 2:14update which we'll be using and a late
63. 2:16update, but we won't add anything yet to
64. 2:18those because under we're going to add a
65. 2:20void called look. So here we will handle
66. 2:23all of the looking with the camera. In
67. 2:25here we'll do a Vector2 called mouse
68. 2:27delta equals
69. 2:29mouse.current.delta.readValue.
70. 2:32So this is basically how much we move
71. 2:34the mouse basically between each frame.
72. 2:37[music] Let's now do your plus equals
73. 2:39mouse sensitivity
74. 2:43multiplied with our mouse sensitivity.
75. 2:46Let's also have a pitch minus equals
76. 2:49where we do mouse delta.y times our
77. 2:52mouse sensitivity and we can do pitch
78. 2:54one more time equals mathf.clamp
79. 2:57where we input our pitch and then we say
80. 2:59the minimum value which I think should
81. 3:01be minus 40 [music] and the maximum
82. 3:03should be 70. So this is how far you can
83. 3:05look up and down basically.
84. 3:07>> [music]
85. 3:07>> And oops, not clamp 01 just clamp like
86. 3:09that. And now we can do transform
87. 3:12.rotation equals Quaternion.Euler
88. 3:150f, yaw, 0f. This will be because when
89. 3:20we look from side to side the player
90. 3:22should actually rotate and not the
91. 3:24actual camera. Now let's do a function
92. 3:26which returns a Vector3 so do Vector3
93. 3:29get move input because we're using the
94. 3:32new input system we'll do var kb for
95. 3:34keyboard equals keyboard.current
96. 3:37so we don't have to write it multiple
97. 3:39times. Then we can do a float x equals
98. 3:410f, a c equals 0. And now we can check
99. 3:45if kb. Let's do [music] the w key first
100. 3:50.isPressed well then we can set C to
101. 3:53plus equals one. And let's copy this
102. 3:55multiple times. Let's do it three times
103. 3:58more. One, two, three. The next one will
104. 4:00be the S key, where we will set C to
105. 4:02minus one. Then we'll do the D key, and
106. 4:06this will be for our X, so X plus equals
107. 4:08one. And then we'll do minus equals one
108. 4:11here for our A key. And now we can
109. 4:14simply at the bottom return our new
110. 4:16vector three, where we input X, where we
111. 4:19input X {comma} zero {comma} C. And
112. 4:21we'll do dot normalized right here, so
113. 4:24it's not above one. Now we'll do a
114. 4:25simple void jump. In here we'll check if
115. 4:28keyboard.current.spacekey.waspressed
116. 4:30this frame, and is grounded, [music]
117. 4:35which is a function we'll create in just
118. 4:37a [music] minute. Well, if these are
119. 4:38both true, we can do rb.addforce,
120. 4:41where we can just do vector3.up
121. 4:43multiplied with our jump force, {comma}
122. 4:46ForceMode.Impulse,
123. 4:48which means all the force happens all at
124. 4:51once. Let's now do this grounded, so we
125. 4:53do bool is grounded like this, so it
126. 4:56turns either true or false. And here we
127. 4:58just return a physics.raycast,
128. 5:02where we input our transform.position,
129. 5:04which is where we're going to shoot our
130. 5:05ray from, and then we'll shoot
131. 5:07vector3.down, so basically downwards.
132. 5:10And then we can set the max distance to
133. 5:11be 1.1. So if this ray hits something
134. 5:14under the player, well, this means we're
135. 5:16on the ground. Now let's do a void
136. 5:18position camera to actually be
137. 5:20positioned the camera right. And here
138. 5:21we'll do Quaternion cam rotation equals
139. 5:25Quaternion.Euler,
140. 5:27where we're going to input pitch {comma}
141. 5:29yaw, {comma} zero. Then we can do a
142. 5:31vector three, where we do focus point
143. 5:35equals transform.position
144. 5:38plus our vector three.up times our
145. 5:41camera height. And now we can do
146. 5:43cam.position equals focus point minus
147. 5:46our cam rotation, multiplied with vector
148. 5:493. forward, multiplied with camera
149. 5:52distance. [music] And we can do
150. 5:54cam.rotation equals our camera rotation,
151. 5:57which we already calculated up here.
152. 5:59Now, we just need a void move, and in
153. 6:01here we'll do a vector 3 called input,
154. 6:04where we'll set that equal to get move
155. 6:06input.
156. 6:07And we'll do a vector 3 called move
157. 6:10direction equals transform.forward
158. 6:13multiplied with input.c plus
159. 6:16transform.right
160. 6:18multiplied with input.x.
161. 6:21Now, we can do [music] vector 3 velocity
162. 6:24equals our move directions times our
163. 6:27move speed. And let's do velocity.y
164. 6:30equals rb.linearvelocity.y.
165. 6:33And we can now do rb.linearvelocity
166. 6:37equals our velocity. Perfect. Now, we
167. 6:39just need to call off these functions up
168. 6:41here in update, fixed update, and late
169. 6:43update. Inside of the normal update
170. 6:45function, we'll call our look, and we'll
171. 6:47also call our jump.
172. 6:50And this is basically where we read
173. 6:51input, or if something only happens on
174. 6:53an instance, that's why it's in here in
175. 6:55update. And in our fixed update, we're
176. 6:57going to add our move. So, physics are
177. 6:59very good to do inside of the fixed
178. 7:01update, so that's why we do our movement
179. 7:03here. And for our late update, we'll do
180. 7:05our position camera.
181. 7:07This is quite important, or else our
182. 7:09camera could look jittery, so it's good
183. 7:11to put inside of the late update
184. 7:13function. And that's everything for the
185. 7:14script. Now, we just have to go back
186. 7:16into Unity. In here, we'll click on the
187. 7:17player and drag the third-person
188. 7:19controller onto here. And now, we just
189. 7:21need to set the camera, so drag the main
190. 7:23camera onto here, and let's try to play.
191. 7:26And yep, we can look around, we can walk
192. 7:28around, and we can jump.
193. 7:30And if you can't do any of that, and you
194. 7:31have an error, maybe you're using the
195. 7:33wrong input system. Just go to edit
196. 7:34project settings, clear, scroll down,
197. 7:35other settings, configuration, and set
198. 7:36active input handling to both. If you
199. 7:38found this video very useful, I know
200. 7:39you'll like my school community, where
201. 7:41my students go from a complete beginner
202. 7:43all the way to publishing their own
203. 7:45games. Check it out. That's the top link
204. 7:47in the description. I really think
205. 7:48you'll like it. We have a bunch of
206. 7:50courses in there. You can get direct
207. 7:52access to ask me any question anytime.
208. 7:54[music] I'll literally be your direct
209. 7:55mentor. So, check it out. Top link in
210. 7:57the description and have an amazing day.