Feat/terrain more controls #321
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WalkthroughThe pull request introduces modifications to two Elm modules: Changes
Sequence DiagramsequenceDiagram
participant User
participant TerrainPage
participant TerrainGenerator
User->>TerrainPage: Adjust Speed
TerrainPage->>TerrainPage: SetSpeed
TerrainPage->>TerrainGenerator: Update Parameters
User->>TerrainPage: Adjust Mountain Probability
TerrainPage->>TerrainPage: SetMountainProbability
TerrainPage->>TerrainGenerator: Regenerate Terrain
Possibly related PRs
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Actionable comments posted: 0
🧹 Nitpick comments (1)
src/Page/Terrain.elm (1)
203-227: Enhanced user controls
These lines provide user-facing controls for adjustingspeedandmountainProbability. This is a clean approach for real-time parameter changes. Consider ensuring that the inputs handle edge cases (e.g., blank strings) either here or instrToFloatWithMinMax.
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📒 Files selected for processing (2)
src/Lib/Range.elm(1 hunks)src/Page/Terrain.elm(12 hunks)
✅ Files skipped from review due to trivial changes (1)
- src/Lib/Range.elm
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📓 Path-based instructions (1)
src/Page/Terrain.elm (1)
Pattern **/*.elm: Review the Elm code with attention to: - Principles of clean code (readability, simplicity, minimalism). - Expressiveness and idiomatic use of Elm. - Performance considerations in functional programming.
Suggest best practices and improvements where applicable.
🔇 Additional comments (17)
src/Page/Terrain.elm (17)
5-6: Imports look good.
These newly added imports from Html and Html.Attributes expand the functionalities needed for user inputs. No changes needed here.
9-9: Reuse string conversion logic
The strToFloatWithMinMax import provides a concise method to sanitize and parse numeric inputs. Great addition for preventing invalid user entries.
14-14: Imported Svg and rect
This allows for declarative vector graphics manipulations, which are integral to rendering the terrain. No issues here.
47-47: Nice extension of Parameters
Including mountainProbability : Float is clear and will make terrain generation more flexible.
73-73: Passing mountainProbability
Incorporating the new probability parameter in generateFractal ties in neatly with the generative logic.
92-98: New default parameters
Reducing speed to 2 might slow down the animation suitably for user control, and initializing mountainProbability at 0.1 seems balanced for a default. Ensure these defaults are documented.
Could you verify if the updated defaults align with typical game or simulation expectations?
108-109: New message constructors
SetSpeed and SetMountainProbability follow Elm’s standard approach for input-based updates. Good usage.
137-137: Appropriate fractal generation update
By reusing generateFractal when adding new layers, we maintain consistent logic for progressive fractal generation.
150-159: Speed update logic
This block correctly validates and clamps the speed based on the provided min/max range (0 to 25). Nicely done.
160-169: Mountain probability update logic
Storing percentage values as fraction (0 to 1 range) is intuitive. This helps keep the fractal logic more direct. Great approach!
196-198: Added call to viewTerrain
Embedding the fully configured viewTerrain inside the HTML structure centralizes the main canvas logic, improving readability.
237-237: Parametric type alias
ViewTerrainParams a uses an extensible record, making the function flexible without forcing a single record type. This is an elegant Elm idiom.
240-293: Layer-by-layer terrain transformations
The viewTerrain function constructs multiple translated and scaled <g> elements, reversing the list to draw from back to front. Clear and well-structured approach for managing perspective.
294-320: SVG container setup
The use of viewBox and layering of SVG groups effectively handles the background and terrain layering. The transformations for offset and scaling are well-implemented.
330-341: Curve path and polyline
Combining the path for a filled shape and the polyline for the outline is a neat way to visualize the terrain. Using join for building coordinate strings is concise and idiomatic.
385-391: Random mountain generator
initialCurve mountainProbability elegantly decides whether to create a mountain or remain flat. This approach fosters a natural variety in terrain.
400-402: Fractal generation scaffolding
generateFractal returning a Random.Generator Curve keeps the pipeline purely functional. This is consistent with Elm’s immutable design principles.
Introduce input controls to adjust terrain speed and mountain frequency.
Summary by CodeRabbit
New Features
Improvements
Bug Fixes