doc

doc/demo07_collision/collision.md

@@ -12,7 +12,7 @@
 ![Image text](image/collision-5.png)
 ![Image text](image/collision-6.png)
 
-# 2. 刚体
+# 2. RigidBody
 
 - 刚体是组成物理世界的基本对象，你可以将刚体想象成一个你不能看到（绘制）也不能摸到（碰撞）的带有属性的物体。
 
@@ -26,7 +26,7 @@
 - torque，扭矩
 - damp，衰减系数，值越大物体移动越慢，可以用来模拟空气摩擦力等效果。
 
-# 3. 物理实战
+# 3. 刚体
 
 - RigidBody，动态刚体，有质量，可以设置速度，会受到重力影响。
 
@@ -36,4 +36,7 @@
 
 - Area2D，一块区域，能够检测到物体的碰撞，但是不会做任何操作
 
-- 碰撞检测Layer和Mask
+- 碰撞检测Layer和Mask，Layer表明当前刚体属于那一层，Mask表面当前
+
+![Image text](image/collision-9.JPG)
+![Image text](image/collision-10.JPG)

doc/demo07_collision/image/collision-10.JPG.import

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doc/demo07_collision/image/collision-9.JPG.import

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scene/demo07_collision/collision.tscn

@@ -45,7 +45,6 @@ extents = Vector2( 30.17, 29.3458 )
 
 [node name="StaticBody2D" type="StaticBody2D" parent="."]
 position = Vector2( 64.5824, 547.095 )
-collision_layer = 2
 
 [node name="Polygon2D" type="Polygon2D" parent="StaticBody2D"]
 color = Color( 0.329412, 0.580392, 0.270588, 1 )