/*************************************************************************/
/*  PandemoniumRenderer.java                                                   */
/*************************************************************************/
/*                       This file is part of:                           */
/*                           GODOT ENGINE                                */
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/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur.                 */
/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md).   */
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package org.pandemoniumengine.pandemonium;

import org.pandemoniumengine.pandemonium.gl.PandemoniumGLSurfaceView;

import org.pandemoniumengine.pandemonium.plugin.PandemoniumPlugin;
import org.pandemoniumengine.pandemonium.plugin.PandemoniumPluginRegistry;
import org.pandemoniumengine.pandemonium.utils.GLUtils;

import javax.microedition.khronos.egl.EGLConfig;
import javax.microedition.khronos.opengles.GL10;

/**
 * Pandemonium's renderer implementation.
 */
class PandemoniumRenderer implements PandemoniumGLSurfaceView.Renderer {
	private final PandemoniumPluginRegistry pluginRegistry;
	private boolean activityJustResumed = false;

	PandemoniumRenderer() {
		this.pluginRegistry = PandemoniumPluginRegistry.getPluginRegistry();
	}

	public void onDrawFrame(GL10 gl) {
		if (activityJustResumed) {
			PandemoniumLib.onRendererResumed();
			activityJustResumed = false;
		}

		PandemoniumLib.step();
		for (int i = 0; i < Pandemonium.singleton_count; i++) {
			Pandemonium.singletons[i].onGLDrawFrame(gl);
		}
		for (PandemoniumPlugin plugin : pluginRegistry.getAllPlugins()) {
			plugin.onGLDrawFrame(gl);
		}
	}

	public void onSurfaceChanged(GL10 gl, int width, int height) {
		PandemoniumLib.resize(width, height);
		for (int i = 0; i < Pandemonium.singleton_count; i++) {
			Pandemonium.singletons[i].onGLSurfaceChanged(gl, width, height);
		}
		for (PandemoniumPlugin plugin : pluginRegistry.getAllPlugins()) {
			plugin.onGLSurfaceChanged(gl, width, height);
		}
	}

	public void onSurfaceCreated(GL10 gl, EGLConfig config) {
		PandemoniumLib.newcontext();
		for (PandemoniumPlugin plugin : pluginRegistry.getAllPlugins()) {
			plugin.onGLSurfaceCreated(gl, config);
		}
	}

	void onActivityResumed() {
		// We defer invoking PandemoniumLib.onRendererResumed() until the first draw frame call.
		// This ensures we have a valid GL context and surface when we do so.
		activityJustResumed = true;
	}

	void onActivityPaused() {
		PandemoniumLib.onRendererPaused();
	}
}
