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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Understanding 2D Physics Engines with Phaser 3, Part 9: Capsule to Capsule Collision and Resolution

cedarcantab

Mar 21, 20225 min read

Understanding 2D Physics Engines with Phaser 3, Part 9: Capsule to Capsule Collision and Resolution

Capsules Phaser 3's default arcade physics engine handles physics bodies as either rectangles (AABB only) or circles. It appears that in...

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Understanding 2D Physics Engines with Phaser 3, Part 8: Triangle Collisions

cedarcantab

Mar 14, 20223 min read

Understanding 2D Physics Engines with Phaser 3, Part 8: Triangle Collisions

Triangle vs Triangle Collision Detection with Rotation In a prior post I took a quick look at GetRectagleToRectangle method of Phaser's...

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cedarcantab

Mar 12, 20223 min read

2D Raycasting using Phaser 3, Part 3

The previous two posts explored how 2D ray casting can be achieved using the various built-in methods of Phaser 3 framework. They all...

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cedarcantab

Mar 12, 20228 min read

2D Raycasting using Phaser 3, Part 2

2D Raycasting in Phaser 3 Tilemaps In the previous post I looked at the use of Phaser.Geom.Intersect methods to execute raycasting. But...

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cedarcantab

Mar 12, 20226 min read

2D Raycasting using Phaser 3, Part 1

This post is about my exploration into Phaser.Geom.Intersect methods, which eventually led to the raycasting demo below (and more, to be...

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Understanding 2D Physics Engines with Phaser 3, Part 7: Rotation

cedarcantab

Mar 10, 20224 min read

Understanding 2D Physics Engines with Phaser 3, Part 7: Rotation

Rotation in a plane So far we have dealt with circles and axis-aligned boxes. Collision detection, resolution and response becomes...

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Understanding 2D Physics Engines with Phaser 3, Part 6: Rectangle Collision Detection & Resolution

cedarcantab

Mar 7, 20229 min read

Understanding 2D Physics Engines with Phaser 3, Part 6: Rectangle Collision Detection & Resolution

Axis Aligned Rectangle Collision Detection and Resolution Having worked through the logic of collision detection between circles and...

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Phaser Coding Tips1&2 Revisited, Part 3: Falling Sand Simulation

cedarcantab

Mar 1, 20226 min read

Phaser Coding Tips1&2 Revisited, Part 3: Falling Sand Simulation

Writing to the Canvas at Pixel Level In the previous two posts, my primary motivation for manipulating the HTML canvas directly was to...

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Phaser Coding Tips1&2 Revisited, Part 2: Pixel level collision detection

cedarcantab

Mar 1, 20226 min read

Phaser Coding Tips1&2 Revisited, Part 2: Pixel level collision detection

Having learned how to get pixel level data of the HTML canvas directly from Phaser3 framework, I set about recreating the rolling barrels...

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Phaser Coding Tips1&2 Revisited, Part 1: Creating a game like Tanks / Worms

cedarcantab

Mar 1, 20226 min read

Phaser Coding Tips1&2 Revisited, Part 1: Creating a game like Tanks / Worms

In creating my Space Invaders clone, one aspect of the game that I found particularly difficult to implement was the "dissolving" shields...

218 views0 comments

Understanding 2D Physics Engines with Phaser 3, Part 5: Circle vs Line Collisions

cedarcantab

Feb 28, 20226 min read

Understanding 2D Physics Engines with Phaser 3, Part 5: Circle vs Line Collisions

Handling collisions between Circle and Line We covered the topic of colliding circles against axis aligned lines. In this post we cover...

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Understanding 2D Physics Engines with Phaser 3, Part 4: Circle Collision Response with Mass

cedarcantab

Feb 22, 20225 min read

Understanding 2D Physics Engines with Phaser 3, Part 4: Circle Collision Response with Mass

Collision Response in Circle2Circle with mass In the previous post I developed the crudest form of collision response; that of two...

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Understanding 2D Physics Engines with Phaser 3, Part 4.2: Collision Response (Friction)

cedarcantab

Feb 16, 20221 min read

Understanding 2D Physics Engines with Phaser 3, Part 4.2: Collision Response (Friction)

Simulating Friction In the previous post we looked at how impulse can be applied along the collision normal to effect "bounce". By...

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Physics Simulation in Javascript: Circle2Circle Collision Response (Bounce)

cedarcantab

Feb 15, 20225 min read

Physics Simulation in Javascript: Circle2Circle Collision Response (Bounce)

Circle vs Circle Collision Response In the previous post I covered: detecting collisions (strictly speaking, overlap) between two...

28 views0 comments

Physics Simulation in Javascript: Circle to Circle Collision Resolution

cedarcantab

Feb 9, 20224 min read

Physics Simulation in Javascript: Circle to Circle Collision Resolution

Resolution of collisions between two circles In the previous post we discussed how to assess whether two circles are colliding, or...

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Physics Simulation in Javascript: Circle to Circle Collision Detection

cedarcantab

Feb 7, 20223 min read

Physics Simulation in Javascript: Circle to Circle Collision Detection

Collision Detection and Collision Resolution between 2 Circles One of the core functions of a physics engine is of course to detect when...

29 views0 comments

Phaser Coding Tips 7 Revisited: Creating a Shoot-em-up Tutorial

cedarcantab

Feb 4, 20227 min read

Phaser Coding Tips 7 Revisited: Creating a Shoot-em-up Tutorial

For those new to the art of creating shoot-em-up games using Javascript/Phaser framework like me, there is a fantastic tutorial here by...

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Physics Simulations in Javascript: Circle to Boundary Collision Detection

cedarcantab

Feb 4, 20225 min read

Physics Simulations in Javascript: Circle to Boundary Collision Detection

Boundary Collision Detection Following on from the previous post, we introduce the concept of collision detection by discussing how to...

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Physics Simulations in Javascript: Moving a ball with Euler Integration

cedarcantab

Feb 3, 20223 min read

Physics Simulations in Javascript: Moving a ball with Euler Integration

Having covered the fundamental laws of physics necessary (at least for linear motion) and vector maths, it is time to make a start. But...

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Understanding 2D Physics Engines with Phaser 3, Part 1.6: Affine Transformation Matrix

cedarcantab

Feb 1, 20224 min read

Understanding 2D Physics Engines with Phaser 3, Part 1.6: Affine Transformation Matrix

Phaser 3 TransformMatrix In the previous post we looked at how a point can be rotated about the origin through multiplying the position...

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