Introduction To Section 4

Your Section 4 Assets

Your Section Notes

An Overview Of Friction

• Why friction is so important.
• About physics materials and friction.
• How static and dynamic friction relate.
• Using the Friction Direction 2 setting.
• Limitations of Unity’s friction, and to improve it.

Static Friction & Critical Angle

• Welcome “Mu-s”, the coefficient of static friction.
• What the static friction coefficient means.
• How this coefficient relates to slope angle.
• Two triangle trigonometry take-home tricks.
• Testing critical angle in Unity Editor.

Make A Friction Test Rig

• Discover slipping angle.
• Try three different static friction coefficients.
• About rolling, and “impulsing” the block.
• Generally horsing around with blocks and slopes.

Friction Combine In Unity

• Why we care about friction combine.
• The limitations of Unity’s model.
• How friction combine precedence works.

About Dynamic Friction

• What is dynamic friction.
• How it relates to terminal velocity on a slope.
• A look at some Stribeck curves.

How Friction Direction 2 Works

• What the Friction Direction 2 setting does.
• How it might be useful.
• A note on using unit vectors.
• Friction Direction 2 doesn’t work in Unity 5!

Wrap-up & Next Steps

Congratulations and how to continue your learning.