COZY COZY WORLD

I am an ordinary Japanese salaryman in his 50's.
The posts are mostly about my attempts at programming which I have taken up recently to maintain logical thinking.
And a bit about my travels around the country.

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Extending Box2D-Lite in Javascript: Support Point based SAT

cedarcantab

Apr 16, 20244 min read

Extending Box2D-Lite in Javascript: Support Point based SAT

Separating Axis Theorem utilising Support Points In my various implementations of the separating axis theorem for detecting collision...

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Box2D-Lite Walkthrough in Javascript: Warm Starting

cedarcantab

Sep 25, 20221 min read

Box2D-Lite Walkthrough in Javascript: Warm Starting

All my Box2D-Lite posts have been transferred to my new blog site: Introduction Different Spaces and Drawing Boxes Unconstrained Dynamics...

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Box2D-Lite Walkthrough in Javascript: Revolute Joint

cedarcantab

Sep 20, 20221 min read

Box2D-Lite Walkthrough in Javascript: Revolute Joint

All my Box2D-Lite posts have been transferred to my new blog site: Introduction Different Spaces and Drawing Boxes Unconstrained Dynamics...

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Box2D-Lite Walkthrough in Javascript: Friction

cedarcantab

Sep 13, 20221 min read

Box2D-Lite Walkthrough in Javascript: Friction

All my Box2D-Lite posts have been transferred to my new blog site: Introduction Different Spaces and Drawing Boxes Unconstrained Dynamics...

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Box2D-Lite Walkthrough in Javascript: Solving Constraints

cedarcantab

Sep 8, 20221 min read

Box2D-Lite Walkthrough in Javascript: Solving Constraints

All my Box2D-Lite posts have been transferred to my new blog site: Introduction Different Spaces and Drawing Boxes Unconstrained Dynamics...

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Box2D-Lite Walkthrough in Javascript: Contact constraint

cedarcantab

Sep 7, 20221 min read

Box2D-Lite Walkthrough in Javascript: Contact constraint

All my Box2D-Lite posts have been transferred to my new blog site: Introduction Different Spaces and Drawing Boxes Unconstrained Dynamics...

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Box2D-Lite Walkthrough in Javascript: Introduction to Constrained Dynamics

cedarcantab

Sep 6, 20221 min read

Box2D-Lite Walkthrough in Javascript: Introduction to Constrained Dynamics

All my Box2D-Lite posts have been transferred to my new blog site: Introduction Different Spaces and Drawing Boxes Unconstrained Dynamics...

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Box2D-Lite Walkthrough in Javascript: Generating Contact Points

cedarcantab

Aug 30, 20221 min read

Box2D-Lite Walkthrough in Javascript: Generating Contact Points

Contact Points using Clipping Method All my Box2D-Lite posts have been transferred to my new blog site: Introduction Different Spaces and...

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Box2D-Lite Walkthrough in Javascript: Collision Detection

cedarcantab

Aug 23, 20221 min read

Box2D-Lite Walkthrough in Javascript: Collision Detection

All my Box2D-Lite posts have been transferred to my new blog site: Introduction Different Spaces and Drawing Boxes Unconstrained Dynamics...

37 views0 comments

Box2D-Lite Walkthrough in Javascript: Introduction

cedarcantab

Aug 13, 20221 min read

Box2D-Lite Walkthrough in Javascript: Introduction

All my Box2D-Lite posts have been transferred to my new blog site: Introduction Different Spaces and Drawing Boxes Unconstrained Dynamics...

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Understanding 2D Physics Engines with Phaser 3, Part 21: Local (Model) space vs World space

cedarcantab

Jul 4, 20225 min read

Understanding 2D Physics Engines with Phaser 3, Part 21: Local (Model) space vs World space

Local vs World space In this post I document the introduction of the concept of local space vs world space. Frankly, the concepts are not...

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Understanding 2D Physics Engines with Phaser 3, Part 19: Clipping Method

cedarcantab

Jul 1, 202210 min read

Understanding 2D Physics Engines with Phaser 3, Part 19: Clipping Method

Finding Contact Points of overlapping Convex Polygons using the Clipping Method The separating axis theorem can tell us whether a polygon...

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Understanding 2D Physics Engines with Phaser 3, Part 18: Collision Response with Rotation

cedarcantab

Jun 30, 20226 min read

Understanding 2D Physics Engines with Phaser 3, Part 18: Collision Response with Rotation

Rectange to Rectangle Collision Response with Rotation In a prior post we looked at how to identify the contact point of two colliding...

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Understanding 2D Physics Engines with Phaser 3, Part 17.1: Collision Response with Rotation

cedarcantab

Jun 19, 20223 min read

Understanding 2D Physics Engines with Phaser 3, Part 17.1: Collision Response with Rotation

Capsule to Capsule Collision response with Rotation Having dealt with the concepts of center of mass and mass moment of inertia, we...

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cedarcantab

Jun 12, 20226 min read

2D Raycasting using Phaser 3, Part 4

Exploring the Geom.Intersects.GetLineToPolygon method In my exploration of 2D raycasting using Phaser 3, I created simple 2D raycasters...

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Mass Moment of Inertia (MMOI): Introduction

cedarcantab

Jun 5, 20224 min read

Mass Moment of Inertia (MMOI): Introduction

Angular Momentum, Moment of Inertia In prior posts we have discussed momentum, which we have assumed to be mass x velocity. In a world...

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Sloped Tile Collision Detection in Phaser 3

cedarcantab

May 28, 20228 min read

Sloped Tile Collision Detection in Phaser 3

Making Characters Climb Sloped Tiles After a long and tortuous journey I finally managed to get CozyPhysics engine to work with partial...

91 views0 comments

Understanding 2D Physics Engines with Phaser 3, Part 15: SAT - Line vs Circle vs Polygon vs Capsule

cedarcantab

May 15, 20222 min read

Understanding 2D Physics Engines with Phaser 3, Part 15: SAT - Line vs Circle vs Polygon vs Capsule

In previous posts I have dealt with checking for collisions of the following combinations: polygon vs polygon polygon vs line segment...

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Partial Tile Collision in Phaser 3: Climbing "Slopes"

cedarcantab

May 14, 20225 min read

Partial Tile Collision in Phaser 3: Climbing "Slopes"

Having worked out the basic logic for detecting collisions with partial tiles, there is light at the end of the tunnel to making Mario...

42 views0 comments

Partial Tile Collision in Phaser 3: The Basics

cedarcantab

May 14, 20224 min read

Partial Tile Collision in Phaser 3: The Basics

Finally, we go beyond recreating (cut-down version of) Phaser's arcade physics engine, and tackle the problem of partial tiles. The...

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COZY COZY WORLD

Extending Box2D-Lite in Javascript: Support Point based SAT

Box2D-Lite Walkthrough in Javascript: Warm Starting

Box2D-Lite Walkthrough in Javascript: Revolute Joint

Box2D-Lite Walkthrough in Javascript: Friction

Box2D-Lite Walkthrough in Javascript: Solving Constraints

Box2D-Lite Walkthrough in Javascript: Contact constraint

Box2D-Lite Walkthrough in Javascript: Introduction to Constrained Dynamics

Box2D-Lite Walkthrough in Javascript: Generating Contact Points

Box2D-Lite Walkthrough in Javascript: Collision Detection

Box2D-Lite Walkthrough in Javascript: Introduction

Understanding 2D Physics Engines with Phaser 3, Part 21: Local (Model) space vs World space

Understanding 2D Physics Engines with Phaser 3, Part 19: Clipping Method

Understanding 2D Physics Engines with Phaser 3, Part 18: Collision Response with Rotation

Understanding 2D Physics Engines with Phaser 3, Part 17.1: Collision Response with Rotation

2D Raycasting using Phaser 3, Part 4

Mass Moment of Inertia (MMOI): Introduction

Sloped Tile Collision Detection in Phaser 3

Understanding 2D Physics Engines with Phaser 3, Part 15: SAT - Line vs Circle vs Polygon vs Capsule

Partial Tile Collision in Phaser 3: Climbing "Slopes"

Partial Tile Collision in Phaser 3: The Basics

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