TerraForged/TerraForgedApp/src/main/java/com/terraforged/app/Applet.java

/*
 *
 * MIT License
 *
 * Copyright (c) 2020 TerraForged
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

package com.terraforged.app;

import com.terraforged.app.renderer.MeshRenderer;
import com.terraforged.app.renderer.Renderer;
import com.terraforged.app.renderer.VoxelRenderer;
import com.terraforged.core.cell.Cell;
import com.terraforged.core.world.terrain.Terrain;
import processing.core.PApplet;
import processing.event.KeyEvent;
import processing.event.MouseEvent;

public abstract class Applet extends PApplet {

    public static final int ELEVATION = 1;
    public static final int BIOME_TYPE = 2;
    public static final int TEMPERATURE = 3;
    public static final int MOISTURE = 4;
    public static final int BIOME = 5;
    public static final int STEEPNESS = 6;
    public static final int TERRAIN_TYPE = 7;
    public static final int EROSION = 8;
    public static final int CONTINENT = 9;

    protected Renderer mesh = new MeshRenderer(this);
    protected Renderer voxel = new VoxelRenderer(this);

    public final Controller controller = new Controller();

    public abstract Cache getCache();

    public abstract float color(Cell<Terrain> cell);

    @Override
    public void settings() {
        size(800, 800, P3D);
    }

    @Override
    public void mousePressed(MouseEvent event) {
        controller.mousePress(event);
    }

    @Override
    public void mouseReleased(MouseEvent event) {
        controller.mouseRelease(event);
    }

    @Override
    public void mouseDragged(MouseEvent event) {
        controller.mouseDrag(event);
    }

    @Override
    public void mouseWheel(MouseEvent event) {
        controller.mouseWheel(event);
    }

    @Override
    public void keyPressed(KeyEvent event) {
        controller.keyPress(event);
    }

    @Override
    public void keyReleased(KeyEvent event) {
        controller.keyRelease(event);
    }

    public void leftAlignText(int margin, int top, int lineHeight, String... lines) {
        noLights();
        fill(0, 0, 100);
        for (int i = 0; i < lines.length; i++) {
            int y = top + (i * lineHeight);
            text(lines[i], margin, y);
        }
    }


    public void drawTerrain(float zoom) {
        if (controller.getRenderMode() == 0) {
            voxel.render(zoom);
        } else {
            mesh.render(zoom);
        }
    }

    public String colorModeName() {
        switch (controller.getColorMode()) {
            case STEEPNESS:
                return "GRADIENT";
            case TEMPERATURE:
                return "TEMPERATURE";
            case MOISTURE:
                return "MOISTURE";
            case TERRAIN_TYPE:
                return "TERRAIN TYPE";
            case ELEVATION:
                return "ELEVATION";
            case BIOME_TYPE:
                return "BIOME TYPE";
            case BIOME:
                return "BIOME";
            case EROSION:
                return "EROSION";
            case CONTINENT:
                return "CONTINENT";
            default:
                return "-";
        }
    }

    public static float hue(float value, int steps, int max) {
        value = Math.round(value * (steps - 1));
        value /= (steps - 1);
        return value * max;
    }

    public void drawCompass() {
        pushStyle();
        pushMatrix();
        textSize(200);
        fill(100, 0, 100);

        char[] chars = {'N', 'E', 'S', 'W'};
        for (int r = 0; r < 4; r++) {
            char c = chars[r];
            float x = -textWidth(c) / 2;
            float y = -width * 1.2F;
            text(c, x, y);
            rotateZ(0.5F * PI);
        }

        popMatrix();
        popStyle();
        textSize(16);
    }
}