检测

Assets/Scenes/SampleScene.unity

@@ -312,7 +312,7 @@ GameObject:
   - component: {fileID: 700694697}
   - component: {fileID: 700694696}
   - component: {fileID: 700694695}
-  m_Layer: 0
+  m_Layer: 6
   m_Name: Middle
   m_TagString: Untagged
   m_Icon: {fileID: 0}
@@ -2466,6 +2466,7 @@ GameObject:
   - component: {fileID: 887481107}
   - component: {fileID: 887481106}
   - component: {fileID: 887481108}
+  - component: {fileID: 887481109}
   m_Layer: 0
   m_Name: Player
   m_TagString: Untagged
@@ -2549,7 +2550,7 @@ CapsuleCollider2D:
   m_GameObject: {fileID: 887481103}
   m_Enabled: 1
   m_Density: 1
-  m_Material: {fileID: 0}
+  m_Material: {fileID: 6200000, guid: 9930d3d9bf689d84fbbbc53b8eb3db02, type: 2}
   m_IncludeLayers:
     serializedVersion: 2
     m_Bits: 0
@@ -2617,6 +2618,24 @@ MonoBehaviour:
   inputDirection: {x: 0, y: 0}
   speed: 300
   jumpForce: 17
+--- !u!114 &887481109
+MonoBehaviour:
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_GameObject: {fileID: 887481103}
+  m_Enabled: 1
+  m_EditorHideFlags: 0
+  m_Script: {fileID: 11500000, guid: 4ac0f40285681b74c841e22ebbe583d5, type: 3}
+  m_Name: 
+  m_EditorClassIdentifier: 
+  bottomOffest: {x: -0.07, y: 0}
+  checkRaduis: 0.06
+  groundLayer:
+    serializedVersion: 2
+    m_Bits: 64
+  isGround: 0
 --- !u!1 &1021266681
 GameObject:
   m_ObjectHideFlags: 0
@@ -3538,7 +3557,7 @@ Tilemap:
       - {fileID: 1961145818, guid: d4dcc96007437b741bd8f3a3c7e02b45, type: 3}
       - {fileID: 1737103796, guid: d4dcc96007437b741bd8f3a3c7e02b45, type: 3}
       - {fileID: -23635172, guid: d4dcc96007437b741bd8f3a3c7e02b45, type: 3}
-      m_AnimationSpeed: 7
+      m_AnimationSpeed: 7.0000005
       m_AnimationTimeOffset: 0
       m_Flags: 0
   - first: {x: 5, y: 4, z: 0}
@@ -3582,7 +3601,7 @@ Tilemap:
       - {fileID: 1051226569, guid: d4dcc96007437b741bd8f3a3c7e02b45, type: 3}
       - {fileID: 1588357252, guid: d4dcc96007437b741bd8f3a3c7e02b45, type: 3}
       - {fileID: -1843162688, guid: d4dcc96007437b741bd8f3a3c7e02b45, type: 3}
-      m_AnimationSpeed: 7.0000005
+      m_AnimationSpeed: 7
       m_AnimationTimeOffset: 0
       m_Flags: 0
   - first: {x: 6, y: 5, z: 0}
@@ -3791,7 +3810,7 @@ Tilemap:
       - {fileID: 1369434452, guid: d4dcc96007437b741bd8f3a3c7e02b45, type: 3}
       - {fileID: -714309378, guid: d4dcc96007437b741bd8f3a3c7e02b45, type: 3}
       - {fileID: -1306249692, guid: d4dcc96007437b741bd8f3a3c7e02b45, type: 3}
-      m_AnimationSpeed: 7
+      m_AnimationSpeed: 7.0000005
       m_AnimationTimeOffset: 0
       m_Flags: 0
   - first: {x: 7, y: 11, z: 0}
@@ -3813,7 +3832,7 @@ Tilemap:
       - {fileID: 1051226569, guid: d4dcc96007437b741bd8f3a3c7e02b45, type: 3}
       - {fileID: 1588357252, guid: d4dcc96007437b741bd8f3a3c7e02b45, type: 3}
       - {fileID: -1843162688, guid: d4dcc96007437b741bd8f3a3c7e02b45, type: 3}
-      m_AnimationSpeed: 7.0000005
+      m_AnimationSpeed: 7
       m_AnimationTimeOffset: 0
       m_Flags: 0
   - first: {x: 6, y: 12, z: 0}
@@ -3879,7 +3898,7 @@ Tilemap:
       - {fileID: 1051226569, guid: d4dcc96007437b741bd8f3a3c7e02b45, type: 3}
       - {fileID: 1588357252, guid: d4dcc96007437b741bd8f3a3c7e02b45, type: 3}
       - {fileID: -1843162688, guid: d4dcc96007437b741bd8f3a3c7e02b45, type: 3}
-      m_AnimationSpeed: 7.0000005
+      m_AnimationSpeed: 7
       m_AnimationTimeOffset: 0
       m_Flags: 0
   - first: {x: 6, y: 14, z: 0}

Assets/Scripts/Player/PhysicsCheck.cs

@@ -0,0 +1,32 @@
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+public class PhysicsCheck : MonoBehaviour
+{
+    [Header("¼ì²â²ÎÊý")]
+    public Vector2 bottomOffest;
+
+    public float checkRaduis;
+
+    public LayerMask groundLayer;
+
+    [Header("״̬")]
+    public bool isGround;
+
+    private void Update()
+    {
+        Check();
+    }
+
+    public void Check()
+    {
+        isGround = Physics2D.OverlapCircle((Vector2)transform.position+bottomOffest, checkRaduis, groundLayer);
+    }
+
+    private void OnDrawGizmosSelected()
+    {
+        Gizmos.DrawWireSphere((Vector2)transform.position + bottomOffest, checkRaduis);
+    }
+
+}

Assets/Scripts/Player/PhysicsCheck.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 4ac0f40285681b74c841e22ebbe583d5
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/Scripts/Player/PlayerController.cs

@@ -10,6 +10,7 @@ public class PlayerController : MonoBehaviour
     public Vector2 inputDirection;
 
     private Rigidbody2D rb;
+    private PhysicsCheck physicsCheck;
 
     [Header("基本参数")]
     public float speed;
@@ -19,6 +20,7 @@ public class PlayerController : MonoBehaviour
     private void Awake()
     {
         rb = GetComponent<Rigidbody2D>();
+        physicsCheck = GetComponent<PhysicsCheck>();
         inputControl = new PlayerInputControl();
         inputControl.GamePlayerInput.Jump.started += Jump;
         
@@ -74,7 +76,11 @@ public class PlayerController : MonoBehaviour
     //跳跃
     private void Jump(InputAction.CallbackContext context)
     {
-        rb.AddForce(transform.up * jumpForce, ForceMode2D.Impulse);
+        if(physicsCheck.isGround)
+        {
+            rb.AddForce(transform.up * jumpForce, ForceMode2D.Impulse);
+        }
+       
     
     }
 }

Assets/Settings/PhyiscsMaterials.meta

@@ -0,0 +1,8 @@
+fileFormatVersion: 2
+guid: 00badfeede830724ab5c052647fd99b4
+folderAsset: yes
+DefaultImporter:
+  externalObjects: {}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/Settings/PhyiscsMaterials/Normal.physicsMaterial2D

@@ -0,0 +1,11 @@
+%YAML 1.1
+%TAG !u! tag:unity3d.com,2011:
+--- !u!62 &6200000
+PhysicsMaterial2D:
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_Name: Normal
+  friction: 0
+  bounciness: 0

Assets/Settings/PhyiscsMaterials/Normal.physicsMaterial2D.meta

@@ -0,0 +1,8 @@
+fileFormatVersion: 2
+guid: 9930d3d9bf689d84fbbbc53b8eb3db02
+NativeFormatImporter:
+  externalObjects: {}
+  mainObjectFileID: 6200000
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

ProjectSettings/TagManager.asset

@@ -11,7 +11,7 @@ TagManager:
   - 
   - Water
   - UI
-  - 
+  - Ground
   - 
   - 
   -