1 files changed, 125 insertions, 0 deletions
diff --git a/src/main/kotlin/gui/BarComponent.kt b/src/main/kotlin/gui/BarComponent.kt
new file mode 100644
index 0000000..8ef0753
--- /dev/null
+++ b/src/main/kotlin/gui/BarComponent.kt
@@ -0,0 +1,125 @@
+
+package moe.nea.firmament.gui
+
+import com.mojang.blaze3d.systems.RenderSystem
+import io.github.notenoughupdates.moulconfig.common.MyResourceLocation
+import io.github.notenoughupdates.moulconfig.common.RenderContext
+import io.github.notenoughupdates.moulconfig.gui.GuiComponent
+import io.github.notenoughupdates.moulconfig.gui.GuiImmediateContext
+import io.github.notenoughupdates.moulconfig.observer.GetSetter
+import io.github.notenoughupdates.moulconfig.platform.ModernRenderContext
+import me.shedaniel.math.Color
+import net.minecraft.client.gui.DrawContext
+import net.minecraft.util.Identifier
+import moe.nea.firmament.Firmament
+
+class BarComponent(
+    val progress: GetSetter<Double>, val total: GetSetter<Double>,
+    val fillColor: Color,
+    val emptyColor: Color,
+) : GuiComponent() {
+    override fun getWidth(): Int {
+        return 80
+    }
+
+    override fun getHeight(): Int {
+        return 8
+    }
+
+    data class Texture(
+        val identifier: Identifier,
+        val u1: Float, val v1: Float,
+        val u2: Float, val v2: Float,
+    ) {
+        fun draw(context: DrawContext, x: Int, y: Int, width: Int, height: Int, color: Color) {
+            context.drawTexturedQuad(
+                identifier,
+                x, y, x + width, x + height, 0,
+                u1, u2, v1, v2,
+                color.red / 255F,
+                color.green / 255F,
+                color.blue / 255F,
+                color.alpha / 255F,
+            )
+        }
+    }
+
+    companion object {
+        val resource = Firmament.identifier("textures/gui/bar.png")
+        val left = Texture(resource, 0 / 64F, 0 / 64F, 4 / 64F, 8 / 64F)
+        val middle = Texture(resource, 4 / 64F, 0 / 64F, 8 / 64F, 8 / 64F)
+        val right = Texture(resource, 8 / 64F, 0 / 64F, 12 / 64F, 8 / 64F)
+        val segmentOverlay = Texture(resource, 12 / 64F, 0 / 64F, 15 / 64F, 8 / 64F)
+    }
+
+    private fun drawSection(
+        context: DrawContext,
+        texture: Texture,
+        x: Int,
+        y: Int,
+        width: Int,
+        sectionStart: Double,
+        sectionEnd: Double
+    ) {
+        if (sectionEnd < progress.get() && width == 4) {
+            texture.draw(context, x, y, 4, 8, fillColor)
+            return
+        }
+        if (sectionStart > progress.get() && width == 4) {
+            texture.draw(context, x, y, 4, 8, emptyColor)
+            return
+        }
+        val increasePerPixel = (sectionEnd - sectionStart) / width
+        var valueAtPixel = sectionStart
+        for (i in (0 until width)) {
+            val newTex =
+                Texture(texture.identifier, texture.u1 + i / 64F, texture.v1, texture.u1 + (i + 1) / 64F, texture.v2)
+            newTex.draw(
+                context, x + i, y, 1, 8,
+                if (valueAtPixel < progress.get()) fillColor else emptyColor
+            )
+            valueAtPixel += increasePerPixel
+        }
+    }
+
+    override fun render(context: GuiImmediateContext) {
+        val renderContext = (context.renderContext as ModernRenderContext).drawContext
+        var i = 0
+        val x = 0
+        val y = 0
+        while (i < context.width - 4) {
+            drawSection(
+                renderContext,
+                if (i == 0) left else middle,
+                x + i, y,
+                (context.width - (i + 4)).coerceAtMost(4),
+                i * total.get() / context.width, (i + 4) * total.get() / context.width
+            )
+            i += 4
+        }
+        drawSection(
+            renderContext,
+            right,
+            x + context.width - 4,
+            y,
+            4,
+            (context.width - 4) * total.get() / context.width,
+            total.get()
+        )
+        RenderSystem.setShaderColor(1F, 1F, 1F, 1F)
+
+    }
+
+}
+
+fun Identifier.toMoulConfig(): MyResourceLocation {
+    return MyResourceLocation(this.namespace, this.path)
+}
+
+fun RenderContext.color(color: Color) {
+    color(color.red, color.green, color.blue, color.alpha)
+}
+
+fun RenderContext.color(red: Int, green: Int, blue: Int, alpha: Int) {
+    color(red / 255f, green / 255f, blue / 255f, alpha / 255f)
+}