Add parallax/scrolling background layers (#67) - #87

Merged

markwpearce merged 24 commits into

mainfrom

feature/parallax-layers-v2

Aug 1, 2026

Commits on Jul 31, 2026

Add design spec for parallax/scrolling background layers (#67)

markwpearce
and
claude
committed
4c88020
Add implementation plan for parallax layers; correct spec's camera-movement mechanism

markwpearce
and
claude
committed
488726e
Add DrawableParallaxLayer skeleton and SceneObjectType.ParallaxLayer

markwpearce
and
claude
committed
e8892ac
Implement SceneObjectParallaxLayer's baseline (factor {1,1}) draw path
markwpearce
committed
ad35f1c
Add parallax-factor coverage for SceneObjectParallaxLayer
markwpearce
committed
0c720ee
Fix wrong expected sign in plan's y-axis parallax-independence test

markwpearce
and
claude
committed
c20c4c3
Fix parallax layer y-axis test assertion for Camera2d coordinate inversion
markwpearce
committed
c33ced6
Fix two bugs in plan's tiling math: ceiling formula and a phase-dependent test

markwpearce
and
claude
committed
363b627

Commits on Aug 1, 2026

Implement repeatX/repeatY tiling for SceneObjectParallaxLayer

markwpearce
and
claude
committed
70ef0bd
Fix Task 5's sub-pixel test: wrong entity/camera setup for its second layer

markwpearce
and
claude
committed
9a245c8
Add sub-pixel accumulation regression test for SceneObjectParallaxLayer
markwpearce
committed
764e886
Redesign Task 5's sub-pixel test - the two-path comparison couldn't fail

markwpearce
and
claude
committed
4cec2c7
Replace Task 5's sub-pixel test with a single-frame fix()-vs-cint() design

markwpearce
and
claude
committed
f39cd8b
Document DrawableParallaxLayer/SceneObjectParallaxLayer

markwpearce
and
claude
committed
a6863f1
Add examples/parallax demonstrating DrawableParallaxLayer with camera follow

markwpearce
and
claude
committed
a2dc73b
Add Task 8 (frustum culling fix) and Task 9 (real art pack) to the plan

markwpearce
and
claude
committed
921fe10
Fix SceneObjectParallaxLayer frustum culling for a camera-distant owning entity

markwpearce
and
claude
committed
3178052
Use the real ansimuz parallax mountain art pack in examples/parallax

markwpearce
and
claude
committed
54f5388
Add Task 10 (debug overlay + draw-mode cycling) to the plan

markwpearce
and
claude
committed
3bb9bea
Add debug info toggle and draw-mode cycling to examples/parallax
markwpearce
committed
69bfeec
Fix plan's wrong button name: options, not info

markwpearce
and
claude
committed
788df4a
Update parallax docs for the isPotentiallyOnScreen/frustum-check overrides

markwpearce
and
claude
committed
386f022
Give each parallax background layer a distinct Z and document the offset divide hazard

markwpearce
and
claude
committed
60f96a1
Add test coverage for DrawableParallaxLayer.scale <> 1

markwpearce
and
claude
committed
2865265

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Add parallax/scrolling background layers (#67) - #87

Add parallax/scrolling background layers (#67)#87
markwpearce merged 24 commits into
mainfrom
feature/parallax-layers-v2

Commits on Jul 31, 2026

Add design spec for parallax/scrolling background layers (#67)

Add implementation plan for parallax layers; correct spec's camera-movement mechanism

Add DrawableParallaxLayer skeleton and SceneObjectType.ParallaxLayer

Implement SceneObjectParallaxLayer's baseline (factor {1,1}) draw path

Add parallax-factor coverage for SceneObjectParallaxLayer

Fix wrong expected sign in plan's y-axis parallax-independence test

Fix parallax layer y-axis test assertion for Camera2d coordinate inversion

Fix two bugs in plan's tiling math: ceiling formula and a phase-dependent test

Commits on Aug 1, 2026

Implement repeatX/repeatY tiling for SceneObjectParallaxLayer

Fix Task 5's sub-pixel test: wrong entity/camera setup for its second layer

Add sub-pixel accumulation regression test for SceneObjectParallaxLayer

Redesign Task 5's sub-pixel test - the two-path comparison couldn't fail

Replace Task 5's sub-pixel test with a single-frame fix()-vs-cint() design

Document DrawableParallaxLayer/SceneObjectParallaxLayer

Add examples/parallax demonstrating DrawableParallaxLayer with camera follow

Add Task 8 (frustum culling fix) and Task 9 (real art pack) to the plan

Fix SceneObjectParallaxLayer frustum culling for a camera-distant owning entity

Use the real ansimuz parallax mountain art pack in examples/parallax

Add Task 10 (debug overlay + draw-mode cycling) to the plan

Add debug info toggle and draw-mode cycling to examples/parallax

Fix plan's wrong button name: options, not info

Update parallax docs for the isPotentiallyOnScreen/frustum-check overrides

Give each parallax background layer a distinct Z and document the offset divide hazard

Add test coverage for DrawableParallaxLayer.scale <> 1