com.specialeffect.gui.JoystickControlOverlay.java Source code

Introduction

Here is the source code for com.specialeffect.gui.JoystickControlOverlay.java

Source

/**
 * Copyright (C) 2016 Kirsty McNaught, SpecialEffect
 * www.specialeffect.org.uk
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 3
 * of the License, or (at your option) any later version.
 */

package com.specialeffect.gui;

import java.awt.Point;

import org.lwjgl.opengl.GL11;

import com.specialeffect.utils.ModUtils;

import net.minecraft.client.Minecraft;
import net.minecraft.client.gui.Gui;
import net.minecraft.util.ResourceLocation;
import net.minecraftforge.client.event.RenderGameOverlayEvent;
import net.minecraftforge.client.event.RenderGameOverlayEvent.ElementType;
import net.minecraftforge.fml.common.eventhandler.SubscribeEvent;

//
// StateOverlay implements a simple status bar at the top of the screen which 
// shows the current states such as attacking, walking, etc.
//
public class JoystickControlOverlay extends Gui {
    private Minecraft mc;

    public JoystickControlOverlay(Minecraft mc) {
        super();

        // We need this to invoke the render engine.
        this.mc = mc;

        mResource = new ResourceLocation("specialeffect:icons/overlay.png");

    }

    private void rescale() {
        // Scale icon sizes to fit screen      
        Point size = ModUtils.getScaledDisplaySize(mc);
        mDisplayWidth = size.x;
        mDisplayHeight = size.y;
    }

    private int mDisplayWidth;
    private int mDisplayHeight;

    // Lists of icons to draw on each half of screen
    ResourceLocation mResource;

    private boolean mVisible = false;

    public void setVisible(boolean bVisible) {
        mVisible = bVisible;
    }

    // This event is called by GuiIngameForge during each frame by
    // GuiIngameForge.pre() and GuiIngameForce.post().
    @SubscribeEvent
    public void onRenderExperienceBar(RenderGameOverlayEvent event) {

        // We draw after the ExperienceBar has drawn.  The event raised by GuiIngameForge.pre()
        // will return true from isCancelable.  If you call event.setCanceled(true) in
        // that case, the portion of rendering which this event represents will be canceled.
        // We want to draw *after* the experience bar is drawn, so we make sure isCancelable() returns
        // false and that the eventType represents the ExperienceBar event.
        if (event.isCancelable() || event.getType() != ElementType.EXPERIENCE) {
            return;
        }

        if (mVisible) {

            this.rescale();

            GL11.glDisable(GL11.GL_LIGHTING);

            this.mc.renderEngine.bindTexture(mResource);

            GL11.glPushAttrib(GL11.GL_TEXTURE_BIT);
            GL11.glTexEnvi(GL11.GL_TEXTURE_ENV, GL11.GL_TEXTURE_ENV_MODE, GL11.GL_ADD);

            GL11.glColor4f(1.0f, 1.0f, 1.0f, 0.5f);

            ModUtils.drawTexQuad(0, 0, mDisplayWidth, mDisplayHeight);

            // reset GL attributes!
            GL11.glPopAttrib();
        }

    }

}