Ridhvl2 Cheatsheet

0. Introduction

An explanation of all methods available in HvlStatics. This page is designed to serve as a reference so users can get the most out of Ridhvl2. Learn how to configure static imports on this page.

Polygon

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hvlQuad(float x, float y, float xl, float yl)

Fetches an instance of HvlPolygon that corresponds to a right-angled quadrilateral (rectangle). In this case, the origin of the quad is centered in the upper-left corner (specified by arguments x and y). The arguments xl and yl represent the x-axis and y-axis lengths of the quad.

NOTE: This method returns a reference to an unstable instance. It is designed to be used directly inside hvlDraw calls, and should not be used elsewhere.

Example Code

...
@Override
public void update(float delta) {
	// draws a magenta quad with upper-left vertex @ (10, 10) and bottom-right vertex at (266, 266)
	hvlDraw(hvlQuad(10, 10, 256, 256), hvlColor(1f, 0f, 1f));

	// draws a textured quad with upper-left vertex @ (0, 0) and bottom-right vertex at (1920, 1080)
	// (this is a common way to handle drawing backgrounds)
	hvlDraw(hvlQuad(0, 0, 1920, 1080), hvlTexture(1));
}
...

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hvlQuadc(float x, float y, float xl, float yl)

Fetches an instance of HvlPolygon that corresponds to a right-angled quadrilateral (rectangle). In this case, the origin of the quad is centered in the middle of the quad (specified by arguments x and y). The arguments xl and yl represent the x-axis and y-axis lengths of the quad.

NOTE: This method returns a reference to an unstable instance. It is designed to be used directly inside hvlDraw calls, and should not be used elsewhere.

Example Code

...
@Override
public void update(float delta) {
	// draws a green quad with upper-left vertex @ (72, 72) and bottom-right vertex at (328, 328)
	hvlDraw(hvlQuadc(200, 200, 256, 256), hvlColor(0f, 1f, 0f));

	// draws a textured quad with upper-left vertex @ (myPlayer.x-32, myPlayer.y-32) and bottom-right vertex at (myPlayer.x+32, myPlayer.y+32)
	// (assuming myPlayer is a HvlCoord)
	hvlDraw(hvlQuadc(myPlayer.x, myPlayer.y, 64, 64), hvlTexture(2));
}
...

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Painter

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hvlColor(float rArg, float gArg, float bArg)

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hvlColor(float rArg, float gArg, float bArg, float aArg)

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hvlColor(float vArg, float aArg)

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hvlDraw(HvlPolygon polygonArg, Color colorArg)

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hvlDraw(HvlPolygon polygonArg, Texture textureArg)

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hvlTranslate(float xArg, float yArg, HvlAction.A0 actionArg)

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hvlRotate(float xArg, float yArg, float degreesArg, HvlAction.A0 actionArg)

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Loader

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hvlLoad(String pathArg)

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hvlTexture(int indexArg)

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