Q&A
////////////コメント部のコード。上昇と重力落下は再現できましたが、ジャンプしたときに(上昇)した時に上に行く力がなくなったら下がり始めるという処理を作れないのですがどうすればいいのでしょうか？
/*Yの符号を逆にする関数*/ float rev_y(float t) { return t * -1.0f; } float nowforce = 0;//一時変数 float force = -18;//初速 float f = 3.0f;//引く数 float gmax = 10;//落下最大速度 #define KEY_FRAME_G 2 const float inital_po = -7; //float PO = inital_po; //float PO = -7; float PO = -7; /*等速直線運動のY 落下*/ void gravity_force() { /* マイナスの時落下 プラスの時 ジャンプ(上昇) */ #define G 6.3234//重力 #define T 0.7//時間 //#define PO 2.5//初速 /////////////////////////////////////////////////////////////////////////////////////////////////////// /*ジャンプできる条件*/ if (isJump == true && isGround == true) { isGround = false; // move->y = 30; PO = 20; DrawFormatString(300, 300, GetColor(255, 255, 255), "ジャンプしました。"); } /*重力落下できる条件*/ if(isGround == false){ float y = move->y + PO * T + 0.5 * G + T * T; DrawFormatString(300, 300, GetColor(255, 255, 255), "空中です。"); move->y = y; //ofs << "y: " << move->y << std::endl; ofs <<"y: "<< y <<std::endl; }else if(isGround == true){ DrawFormatString(300, 300, GetColor(255, 255, 255), "地面です。"); move->y = 0; } } ///////////////////////////////////////////////////////////////////////////////////////////////////////// /*キー入力*/ void key_Update() { //if (keyboard(KEY_INPUT_LEFT) == 1)//← if (keyboard(KEY_INPUT_LEFT) > 0)//← { Direction->x = -1; *State = key::Left; } else if (keyboard(KEY_INPUT_RIGHT) > 0)//→ //else if (keyboard(KEY_INPUT_RIGHT) == 1)//→ { Direction->x = 1; *State = key::Right; } else { Direction->x = 0; *State = key::Invalid; } /*gravity_force()にて処理*/ if (keyboard(KEY_INPUT_SPACE) == 1)//ジャンプ { Direction->y = 1; *State_y = key::Jump; }else//何も押していない時つまり重力落下 { Direction->y = -1; *State_y = key::Invalid; } } /*移動処理*/ void Move() { if (*State == key::Left) { move->x = Direction->x * (CELL); }else if (*State == key::Right) { move->x = Direction->x * (CELL); } else if (*State == key::Invalid)//左右に動いてないとき { // Direction->x = 0; move->x = 0; } /*ジャンプ*/ if(*State_y == key::Jump) { isJump = true; }else if(*State_y == key::Invalid){//重力落下 } /*ジャンプ入力*/ gravity_force(); } /*セル検索 衝突時: true */ bool Find_Cell(Position *p) { int px = (int)p->x / CELL; int py = (int)p->y / CELL; /*0じゃないとき*/ if(map[py][px] != 0) { return true; }else{ return false; } } /* std::optional<Position> cross_pos(Position a, Position b, Position c, Position d) { //tc = (x1 - x2) * (y3 - y1) + (y1 - y2)* (x1 - x3); float tc = (a.x - b.x) * (c.y - a.y) + (a.y - b.y) * (a.x - c.x); //td = (x1 - x2) * (y4 - y1) + (y1 - y2)* (x1 - x4); float td = (a.x - b.x) * (d.y - a.y) + (a.y - b.y) * (a.x - d.x); //ta = (x3 - x4) * (y1 - y3) + (y3 - y4) * (x3 - x1) float ta = (c.x - d.x) * (a.y - c.y) + (c.y - d.y) * (c.x - a.x); //tb = (x3 - x4) * (y2 - y3) + (y3 - y4) * (x3 - x2) float tb = (c.x - d.x) * (b.y - c.y) + (c.y - d.y) * (c.x - b.x); return std::nullopt; } */ /*マップを探索してブロックの場所の座標を返す。*/ bool Find_Map(int x, int y) { if(map[y][x] != 0) { return true; }else{ return false; } } /*-----------------------------------衝突座標を返す関数-----------------------------------------*/ /*---------------------------------------------------当たり判定----------------------------------------------------------------*/ void Collision_Update() { // std::unique_ptr<Position> xPlayer_up, xPlayer_down; // std::unique_ptr<Position> yPlayer_left, yPlayer_right; //move->y = -20; /*補正座標を保存*/ Position *xPlayer_up, *xPlayer_down; Position *yPlayer_left, *yPlayer_right; xPlayer_up = NULL; xPlayer_down = NULL; yPlayer_left = NULL; yPlayer_right = NULL; bool xR ,xL; xR = xL = false; Position now_x[2];//今いる座標 Position now_y[2];//今いる座標 Position future_x[2];//移動先 座標 Position future_y[2];//移動先 座標 /*---------------- X 軸----------------------------*/ /*誤差修正*/ int offset = 0; if(Direction ->x > 0){ offset = (CELL); }else{ offset = 0; } now_x[0].x = pos->x + offset; now_x[0].y = pos->y - ((CELL / 2)); now_x[1].x = pos->x + offset; now_x[1].y = pos->y + ((CELL / 2) - 1); /*---------------- Y 軸----------------------------*/ now_y[0].x = pos->x - (CELL / 2); now_y[0].y = pos->y + (CELL / 2); now_y[1].x = pos->x + (CELL / 2); now_y[1].y = pos->y + (CELL / 2); /*未来座標配列に現在座標をコピーする*/ /*---------------- X 軸----------------------------*/ future_x[0].x = now_x[0].x + (move->x) + (((CELL / 2) - 1) * Direction->x); future_x[0].y = now_x[0].y + move->y; future_x[1].x = now_x[1].x + (move->x) + (((CELL / 2) - 1) * Direction->x); future_x[1].y = now_x[1].y + move->y; /*---------------- Y 軸----------------------------*/ future_y[0].x = now_y[0].x + move->x; future_y[0].y = now_y[0].y + move->y * Direction->y; future_y[1].x = now_y[1].x + move->x; future_y[1].y = now_y[1].y + move->y * Direction->y; Position *p = NULL; for(int y = 0; y < 100; y++){ for(int x = 0;x < 100; x++){ if(Find_Map(x,y) == true){ /*-----------------------------X 軸---------------------------------*/ int r = cross_pos(&p,now_x[0], future_x[0], Position((x + 1) * CELL, y * CELL),Position(((x + 1) * CELL), ((y + 1) * CELL))); if(r != 0) { /*上側*/ // DrawFormatString(200,120,GetColor(255,255,255),"x col [0] %d",r); xPlayer_up = p; } p = NULL; r = cross_pos(&p,now_x[1], future_x[1], Position((x + 1) * CELL, y * CELL),Position(((x + 1) * CELL), ((y + 1) * CELL))); if ( r != 0) { /*下側*/ // DrawFormatString(200,100,GetColor(255,255,255),"x col [1]: %d",r); xPlayer_down = p; } /*-----------------------------Y 軸---------------------------------*/ r = cross_pos(&p, now_y[0], future_y[0], Position(x * CELL, y * CELL),Position( (x + 1) * CELL , (y * CELL) )); if (r != 0) { // DrawFormatString(120,100,GetColor(255,255,255),"y col[0] %d",r); // ofs << "left"<<std::endl; yPlayer_left = p; } p = NULL; r = cross_pos(&p, now_y[1], future_y[1], Position( x * CELL, y * CELL),Position( (x + 1) * CELL, (y * CELL))); if ( r != 0) { // DrawFormatString(100,120,GetColor(255,255,255),"y col[1] %d",r); // ofs << "right"<<std::endl; yPlayer_right = p; } } } } // ofs << pos->y <<std::endl; /*--------------------------X 軸補正--------------------------*/ /*当たっていないとき*/ if (xPlayer_down == NULL && xPlayer_up == NULL) { // ofs << "X補正" << std::endl; pos->x += move->x;// * direction済み } /*上下両方当たっている時*/ if ( (xPlayer_down != NULL) && (xPlayer_up != NULL) ) { /* Right */ if (Direction->x > 0) { if (xPlayer_up->x >= xPlayer_down->x) { pos->x = xPlayer_down->x - (CELL + CELL / 2); } else { pos->x = xPlayer_up->x - (CELL+ CELL / 2); } } /* Left */ if (Direction->x < 0) { if (xPlayer_up->x <= xPlayer_down->x) { //pos->x = xPlayer_down->x + (CELL); pos->x = xPlayer_down->x + (CELL / 2) + 1; } else{ pos->x = xPlayer_up->x + (CELL / 2) + 1; //pos->x = xPlayer_up->x + (CELL); } } }else{ } /*上側*/ if (xPlayer_up != NULL && xPlayer_down == NULL) { if (Direction->x > 0) { pos->x = xPlayer_up->x; } if (Direction->x < 0) { pos->x = xPlayer_up->x; } } /*--------------------------Y 軸補正--------------------------*/ if (yPlayer_left == NULL && yPlayer_right == NULL) { //ofs << "Y補正" << std::endl; isGround = false; //pos->y += rev_y(move->y); //pos->y += rev_y(move->y); pos->y += move->y * Direction->y; }else if ((yPlayer_left != NULL) && (yPlayer_right != NULL)) { isGround = true; if (Direction->y > 0) { if (yPlayer_left->y >= yPlayer_right->y) { //pos->y = yPlayer_left->y + (CELL + (CELL / 2)); pos->y = yPlayer_left->y - (CELL / 2); //pos->y += - (CELL / 2); } else { //pos->y = yPlayer_right->y + (CELL + (CELL / 2)); pos->y = yPlayer_right->y - (CELL / 2); //pos->y += - (CELL / 2); } } /*落下 反転処理をしているので - 1の時は落下中*/ if (Direction->y < 0) { if (yPlayer_left->y <= yPlayer_right->y) { pos->y = yPlayer_left->y - (CELL / 2); //pos->y = yPlayer_left->y - (CELL / 2); //pos->y += - (CELL / 2); } else { pos->y = yPlayer_right->y - (CELL / 2); //pos->y = yPlayer_right->y - (CELL / 2); //pos->y += - (CELL / 2); //pos->x = xPlayer_up->x + (CELL); } } }else if( yPlayer_left == NULL && yPlayer_right != NULL) { pos->y = yPlayer_right->y - (CELL / 2); //pos->y += - (CELL / 2); isGround = true; } else if (yPlayer_left != NULL && yPlayer_right == NULL) { pos->y = yPlayer_left->y - (CELL / 2); // pos->y += - (CELL / 2); isGround = true; } delete(xPlayer_up); delete(xPlayer_down); delete(yPlayer_left); delete(yPlayer_right); } /*-----------------------------
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以下サイトの解説は参考にならないでしょうか。
参考：
ゲームプログラミングの館 > 27. ジャンプの考え方１(物理)
https://dixq.net/g/30.html
プログラム学習 > マリオをジャンプさせる(プログラミングでマリオを作る第13回)
https://xn--qcka9i7azcwa9bz223dvr6c.jp/2018/01/20/%E3%83%9E%E3%83%AA%E3%82%AA%E3%82%92%E3%82%B8%E3%83%A3%E3%83%B3%E3%83%97%E3%81%95%E3%81%9B%E3%82%8B%E3%83%97%E3%83%AD%E3%82%B0%E3%83%A9%E3%83%9F%E3%83%B3%E3%82%B0%E3%81%A7%E3%83%9E%E3%83%AA%E3%82%AA/
投稿2020/01/19 04:26
総合スコア6500
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