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galacean / engine

A typescript interactive engine, support 2D, 3D, animation, physics, built on WebGL and glTF.
https://www.galacean.com/engine
MIT License
4.29k stars 307 forks source link

Fix texture sheet and gravity bug #2422

Closed GuoLei1990 closed 3 weeks ago

GuoLei1990 commented 3 weeks ago

Please check if the PR fulfills these requirements

Summary by CodeRabbit

These changes collectively enhance the particle system's functionality and realism, offering a more dynamic experience for users.

coderabbitai[bot] commented 3 weeks ago

Walkthrough

The changes in this pull request enhance the particle system's functionality by integrating gravity effects into various components. The ParticleGenerator class now includes gravity handling in its emission logic and bounding box calculations. The MainModule class has been streamlined to set gravity directly from the scene's physics, while the GLSL shaders have been updated to incorporate randomness into gravity calculations. Additionally, a variable in the texture sheet animation module has been renamed for clarity, but the overall functionality remains unchanged.

Changes

File Path Change Summary
packages/core/src/particle/ParticleGenerator.ts Added imports for ParticleBufferUtils and ParticleCompositeCurve; updated emit and _addNewParticle methods to include gravity handling; adjusted _calculateGeneratorBounds for gravity effects.
packages/core/src/particle/modules/MainModule.ts Removed duplicate import for TransformModifyFlags; removed _gravity variable; updated gravity handling in _updateShaderData and constructor initialization.
packages/core/src/shaderlib/extra/particle.vs.glsl Modified gravityVelocity calculation to include a random factor based on a_Random0.x.
packages/core/src/shaderlib/particle/texture_sheet_animation_module.glsl Renamed variable floorTotalULength to tileRowIndex in computeParticleUV function for clarity.

Possibly related PRs

Suggested labels

bug, particle

Suggested reviewers

🐇 In the world of particles, we play,
With gravity's pull, we dance and sway.
From shaders to modules, we craft and create,
A sprinkle of randomness makes it all great!
So hop along, let the particles fly,
In a whimsical dance, under the sky! 🌌

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codecov[bot] commented 3 weeks ago

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 69.48%. Comparing base (5d147ae) to head (7db9d0f). Report is 1 commits behind head on main.

Additional details and impacted files ```diff @@ Coverage Diff @@ ## main #2422 +/- ## ========================================== - Coverage 69.50% 69.48% -0.03% ========================================== Files 522 522 Lines 27365 27366 +1 Branches 4097 4098 +1 ========================================== - Hits 19021 19014 -7 - Misses 6846 6850 +4 - Partials 1498 1502 +4 ``` | [Flag](https://app.codecov.io/gh/galacean/engine/pull/2422/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=galacean) | Coverage Δ | | |---|---|---| | [unittests](https://app.codecov.io/gh/galacean/engine/pull/2422/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=galacean) | `69.48% <100.00%> (-0.03%)` | :arrow_down: | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=galacean#carryforward-flags-in-the-pull-request-comment) to find out more.

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