Androidアプリ開発の４回目です。
今回はマップの広さに合わせて移動可能範囲を制限していきます。
これは条件式を１つ追加すればいいだけです。
- 使用言語 java
- 開発ツール AndroidStudio
変更点
- Mapクラスに移動制限用の条件分岐を追加
前回drawメソッドの中に追記した、横移動用の加算式に条件式を適用します。
package com.example.dbd.daybyday;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
public class Map {
private final int ROWCOUNT = 20; //縦表示ドット数
private final int COLUMNCOUNT = 10; //横表示ドット数
private float dotX; //1ドットの横幅
private float dotY; //1ドットの縦幅
private Stage stage; //描画用にstageクラスの参照保持
private Paint paint; //色保持用
int xx; //横位置保持用
int xxPlus; //変数xx加算用
//表示マップの２次元配列
private int[][] map = {
{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,1,1,1},
{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
{1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1},
{1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1},
{1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}
};
//コンストラクタ
//画面サイズを引数で受け取り、ドットサイズを設定
public Map(float viewX, float viewY,Stage stage){
this.stage = stage;
dotX = viewX / COLUMNCOUNT;
dotY = viewY / ROWCOUNT;
paint = new Paint();
paint.setColor(Color.GREEN);
}
public void draw(){
while(true) {
if(xx + xxPlus <= map[0].length - COLUMNCOUNT && xx + xxPlus >= 0) { //加算後の値がマップの範囲を超えなければ
xx += xxPlus; //横移動
}
Canvas canvas = stage.holder.lockCanvas(); //画面をロックして
canvas.drawColor(Color.WHITE); //画面をクリア
//描画ドット数繰り返す
for (int y = 0; y < ROWCOUNT; y++) {
for (int x = 0; x < COLUMNCOUNT; x++) {
switch (map[y][x + xx]) { //xxが描画開始インデックスを調整
case 1: //配列の値が1の場合は
float drawX = x * dotX; //描画開始位置のX座標を設定
float drawY = y * dotY; //描画開始位置の座標を設定
canvas.drawRect(drawX, drawY, drawX + dotX, drawY + dotY, paint);
break;
}
}
}
stage.holder.unlockCanvasAndPost(canvas); //画面に変更反映
}
}
//以下はゲッター
public int getROWCOUNT() {
return ROWCOUNT;
}
public int getCOLUMNCOUNT() {
return COLUMNCOUNT;
}
public float getDotX() {
return dotX;
}
public float getDotY() {
return dotY;
}
public int[][] getMap() {
return map;
}
}
これでマップの端まで移動すると止まるようになりました。
次はいよいよキャラ移動を作成していきます。
そのための布石としてMainCharクラスを作成しておきます。
変更点
- MainCharクラスを作成
- キャラの初期位置と初期サイズを設定
- drawメソッドにキャラ描画処理を追加
package com.example.dbd.daybyday;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
public class Map {
private final int ROWCOUNT = 20; //縦表示ドット数
private final int COLUMNCOUNT = 10; //横表示ドット数
private float dotX; //1ドットの横幅
private float dotY; //1ドットの縦幅
private Stage stage; //描画用にstageクラスの参照保持
private Paint paint; //色保持用
private MainChar mainChar; //キャラ描画用データ参照用
int xx; //横位置保持用
int xxPlus; //変数xx加算用
//表示マップの２次元配列
private int[][] map = {
{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,1,1,1},
{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
{1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1},
{1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1},
{1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}
};
//コンストラクタ
//画面サイズを引数で受け取り、ドットサイズを設定
public Map(float viewX, float viewY,Stage stage){
this.stage = stage;
dotX = viewX / COLUMNCOUNT;
dotY = viewY / ROWCOUNT;
paint = new Paint();
paint.setColor(Color.GREEN);
//MainCharクラスのインスタンス生成(初期設定値)
mainChar = new MainChar(viewX,viewY,dotX,dotY);
}
public void draw(){
while(true) {
if(xx + xxPlus <= map[0].length - COLUMNCOUNT && xx + xxPlus >= 0) { //加算後の値がマップの範囲を超えなければ
xx += xxPlus; //横移動
}
Canvas canvas = stage.holder.lockCanvas(); //画面をロックして
canvas.drawColor(Color.WHITE); //画面をクリア
//描画ドット数繰り返す
for (int y = 0; y < ROWCOUNT; y++) {
for (int x = 0; x < COLUMNCOUNT; x++) {
switch (map[y][x + xx]) { //xxが描画開始インデックスを調整
case 1: //配列の値が1の場合は
float drawX = x * dotX; //描画開始位置のX座標を設定
float drawY = y * dotY; //描画開始位置の座標を設定
canvas.drawRect(drawX, drawY, drawX + dotX, drawY + dotY, paint);
break;
}
}
}
float[] charPoint = mainChar.getCharPoint(); //キャラの位置取得
canvas.drawRect(charPoint[0],charPoint[1],charPoint[0] + mainChar.getSizeX(), charPoint[1] + mainChar.getSizeY(), mainChar.getPaint()); //キャラ描画
stage.holder.unlockCanvasAndPost(canvas); //画面に変更反映
}
}
//以下はゲッター
public int getROWCOUNT() {
return ROWCOUNT;
}
public int getCOLUMNCOUNT() {
return COLUMNCOUNT;
}
public float getDotX() {
return dotX;
}
public float getDotY() {
return dotY;
}
public int[][] getMap() {
return map;
}
}
package com.example.dbd.daybyday;
import android.graphics.Color;
import android.graphics.Paint;
/**
* Created by isechi on 2017/09/02.
*/
public class MainChar {
private float x; //キャラ横位置
private float y; //キャラ縦位置
private float sizeX; //キャラ横サイズ
private float sizeY; //キャラ縦サイズ
private Paint paint; //キャラの色
//コンストラクタ
public MainChar(float viewX, float viewY, float dotX, float dotY){
x = viewX / 2; //キャラ初期位置設定
y = viewY / 2; //キャラ初期位置設定
sizeX = dotX / 2; //キャラ初期サイズ設定
sizeY = dotY * 2; //キャラ初期サイズ設定
paint = new Paint();
paint.setColor(Color.RED); //キャラの色設定
}
//以下getter setter
float[] getCharPoint(){
float[] point = {x,y};
return point;
}
public float getX() {
return x;
}
public void setX(float x) {
this.x = x;
}
public float getY() {
return y;
}
public void setY(float y) {
this.y = y;
}
public float getSizeX() {
return sizeX;
}
public void setSizeX(float sizeX) {
this.sizeX = sizeX;
}
public float getSizeY() {
return sizeY;
}
public void setSizeY(float sizeY) {
this.sizeY = sizeY;
}
public Paint getPaint() {
return paint;
}
public void setPaint(Paint paint) {
this.paint = paint;
}
}
これで画面の中央にキャラ描画ができます。
次回はキャラの移動や重力適用を実装していきます。
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