Game Development

Game Development Animation

Apply Disney's 12 animation principles to game engines, player feedback, and interactive entertainment.

Quick Reference

Principle Applications

Squash & Stretch: Deform characters on landing impact. Stretch during fast movement. Impact frames freeze and squash for power. Keep volume consistent in deformation.

Anticipation: Attack wind-ups telegraph to players. Jump squats before leaving ground. Charge attacks show buildup. Enemy tells warn of incoming damage.

Staging: Camera frames important action. Environmental lighting guides attention. Enemy placement creates readable combat scenarios. UI doesn't obscure critical gameplay.

Straight Ahead vs Pose to Pose: Procedural animation (ragdoll, physics) is straight ahead. Keyframed attack combos are pose to pose. Blend both—keyframed base with procedural secondary motion.

Follow Through & Overlapping: Secondary elements (hair, cloth, tails) continue after body stops. Weapon trails persist after swing. Landing recovery extends past initial impact.

Slow In / Slow Out: Use animation curves—never linear for character motion. Attack startup fast-out, recovery slow-in. Ease jumps at apex for floatiness control.

Arc: Jumping follows parabolic arc. Sword swings trace curved paths. Projectiles arc naturally unless hitscan. Dodge rolls curve rather than linear translate.

Secondary Action: Screen shake on impact. Particle bursts on hits. Controller rumble synced to action. Sound design reinforces visual timing.

Timing: Hit-stop (freeze frames) emphasizes impact—2-5 frames typical. Attack startup/active/recovery frame data matters for game feel. Response to input under 100ms.

Exaggeration: Game animation reads at distance and speed. Exaggerate poses 20-30% beyond realistic. Hit reactions more dramatic than physics would suggest. Stylization serves clarity.

Solid Drawing: Silhouettes must read at all zoom levels. Consistent character proportions across animations. Strong poses at keyframes. Avoid tangent lines that confuse form.

Appeal: Characters have personality in idle animations. Movement feels satisfying independent of mechanics. Players should enjoy watching their character move.

Engine Patterns

Unity

// Squash and stretch on landingIEnumerator LandingSquash() {    transform.localScale = new Vector3(1.2f, 0.8f, 1.2f);    yield return new WaitForSeconds(0.05f);    // Ease back to normal    float t = 0;    while (t < 1) {        t += Time.deltaTime * 8f;        transform.localScale = Vector3.Lerp(            new Vector3(1.2f, 0.8f, 1.2f),            Vector3.one,            EaseOutElastic(t));        yield return null;    }}
// Hit-stop for impactIEnumerator HitStop(int frames) {    Time.timeScale = 0f;    for (int i = 0; i < frames; i++)        yield return null;    Time.timeScale = 1f;}

Unreal

// Animation curve for easingUPROPERTY(EditAnywhere)UCurveFloat* JumpArcCurve;
// Apply curve to movementfloat CurveValue = JumpArcCurve->GetFloatValue(NormalizedTime);

Timing Reference

Frame data at 60fps. Adjust for target framerate.