efibs / mc-lasertag-mod

public class LasertagLoadingScreen extends Screen {

    private static final Identifier VIGNETTE_TEXTURE = new Identifier("textures/misc/vignette.png");

    public LasertagLoadingScreen() {

        super(NarratorManager.EMPTY);

    }

    @Override

    public void render(MatrixStack matrices, int mouseX, int mouseY, float delta) {

        // Get the game managers

        var gameManager = MinecraftClient.getInstance().world.getClientLasertagManager();

        var uiState = gameManager.getSyncedState().getUIState();

        var hMid = this.height / 2.0F;

        var wMid = this.width / 2.0F;

        this.renderBackground();

        this.renderVignette();

        var textColor = 0xFFFFFFFF;

        var stepString = uiState.mapLoadingStepString + "...";

        var textWidth = this.textRenderer.getWidth(stepString);

        this.textRenderer.drawWithShadow(matrices, Text.literal(stepString), wMid - (textWidth / 2.0F), hMid - 15, textColor);

        int barStart = (int)(wMid - (UIState.progressBarWidth / 2.0));

        int progressWidth = (int) (UIState.progressBarWidth * uiState.mapLoadingProgress);

        int barUpperHeight = (int)hMid + 10;

        int barLowerHeight = (int)hMid + 15;

        // Draw background

        DrawableHelper.fill(matrices, barStart, barUpperHeight, barStart + UIState.progressBarWidth, barLowerHeight, UIState.boxColor);

        // Draw progress

        DrawableHelper.fill(matrices, barStart, barUpperHeight, barStart + progressWidth, barLowerHeight, 0xFFFFFFFF);

        super.render(matrices, mouseX, mouseY, delta);

    }

    // Override the keyPressed so that the player can't close the loading screen with escape

    @Override

    public boolean keyPressed(int keyCode, int scanCode, int modifiers) {

        return false;

    }

    private void renderBackground() {

        RenderSystem.setShader(GameRenderer::getPositionTexColorShader);

        RenderSystem.setShaderTexture(0, DrawableHelper.OPTIONS_BACKGROUND_TEXTURE);

        Tessellator tessellator = Tessellator.getInstance();

        BufferBuilder bufferBuilder = tessellator.getBuffer();

        bufferBuilder.begin(VertexFormat.DrawMode.QUADS, VertexFormats.POSITION_TEXTURE_COLOR);

        var a = 0.5f;

        bufferBuilder.vertex(0.0,     this.height, this.getZOffset()).texture(0.0f,                          0.0f                          ).color(a, a, a, 1.0f).next();

        bufferBuilder.vertex(this.width, this.height, this.getZOffset()).texture(this.width * 0.015625f * 2.0f, 0.0f                          ).color(a, a, a, 1.0f).next();

        bufferBuilder.vertex(this.width, 0.0,      this.getZOffset()).texture(this.width * 0.015625f * 2.0f, this.height * 0.015625f * 2.0f).color(a, a, a, 1.0f).next();

        bufferBuilder.vertex(0.0,     0.0,      this.getZOffset()).texture(0.0f,                          this.height * 0.015625f * 2.0f).color(a, a, a, 1.0f).next();

        tessellator.draw();

    }

    private void renderVignette() {

        RenderSystem.setShader(GameRenderer::getPositionTexColorShader);

        RenderSystem.setShaderTexture(0, VIGNETTE_TEXTURE);

        RenderSystem.enableBlend();

        RenderSystem.blendFunc(GlStateManager.SrcFactor.ZERO, GlStateManager.DstFactor.ONE_MINUS_SRC_COLOR);

        Tessellator tessellator = Tessellator.getInstance();

        BufferBuilder bufferBuilder = tessellator.getBuffer();

        bufferBuilder.begin(VertexFormat.DrawMode.QUADS, VertexFormats.POSITION_TEXTURE_COLOR);

        bufferBuilder.vertex(0.0,     this.height, this.getZOffset()).texture(0.0f, 1.0f).color(1.0f, 1.0f, 1.0f, 1.0f).next();

        bufferBuilder.vertex(this.width, this.height, this.getZOffset()).texture(1.0f, 1.0f).color(1.0f, 1.0f, 1.0f, 1.0f).next();

        bufferBuilder.vertex(this.width, 0.0,      this.getZOffset()).texture(1.0f, 0.0f).color(1.0f, 1.0f, 1.0f, 1.0f).next();

        bufferBuilder.vertex(0.0,     0.0,      this.getZOffset()).texture(0.0f, 0.0f).color(1.0f, 1.0f, 1.0f, 1.0f).next();

        tessellator.draw();

        RenderSystem.disableBlend();