gistfile1.txt

#include "DxLib.h"

float PlayerX = 0;
float PlayerY = 240;
bool RightKeyON = false;
bool LeftKeyON = false;
bool UpKeyON = false;
bool DownKeyON = false;
const float PlayerSpeed = 3.0f;

const int Map[15][20] = {
	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	0, 0, 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, 1, 0, 1, 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, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	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, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0,
	0, 0, 0, 1, 1, 1, 0, 0, 0, 1, 1, 0, 1, 1, 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,
};

void SetLeftWall(float x, float yTop, float yUnder); // 左壁の作成

int WINAPI WinMain(_In_ HINSTANCE, _In_opt_ HINSTANCE, _In_ LPSTR, _In_ int) {
	// ---ここから設定---
	ChangeWindowMode(TRUE), SetMainWindowText("アクションゲームの当たり判定(衝突処理)"), SetGraphMode(640, 480, 32),
		SetDoubleStartValidFlag(TRUE); DxLib_Init(), SetDrawScreen(DX_SCREEN_BACK);
	// ---ここまで設定---

	// ゲームループ
	while (ScreenFlip() == 0 && ProcessMessage() == 0 && ClearDrawScreen() == 0) {

		// 右キーが入力された時、プレイヤーを右へ移動させる
		RightKeyON = CheckHitKey(KEY_INPUT_RIGHT);
		if (RightKeyON == true) {
			PlayerX += PlayerSpeed;
		}

		// 左キーが入力された時、プレイヤーを移動させる
		LeftKeyON = CheckHitKey(KEY_INPUT_LEFT);
		if (LeftKeyON == true) {
			PlayerX -= PlayerSpeed;
		}

		// 上キーが入力された時、プレイヤーを移動させる
		UpKeyON = CheckHitKey(KEY_INPUT_UP);
		if (UpKeyON == true) {
			PlayerY -= PlayerSpeed;
		}

		// 下キーが入力された時、プレイヤーを移動させる
		DownKeyON = CheckHitKey(KEY_INPUT_DOWN);
		if (DownKeyON == true) {
			PlayerY += PlayerSpeed;
		}

		for (int Height = 0; Height <= 15; ++Height) {
			for (int Width = 0; Width <= 20; ++Width) {
				if (Map[Height][Width] == 1) {
					SetLeftWall(Width * 32.0f, Height * 32.0f, (Height * 32.0f) + 32.0f);
				}
			}
		}

		DrawCircle(PlayerX, PlayerY, 10, GetColor(255, 0, 0), true);
	}

	DxLib_End(); return 0;
}

// 左壁の作成
void SetLeftWall(float x, float yTop, float yUnder) {

	if (x - 3.0f <= PlayerX && PlayerX <= x + 3.0f && yTop <= PlayerY && PlayerY <= yUnder) { // プレイヤーが壁の左側にいつつ、壁の高さと同じ場所にいる時
		if (x - 0.10f <= PlayerX) {
			PlayerX = x - 0.10f;
		}
	}

	DrawLine(x, yTop, x, yUnder, GetColor(255, 255, 255));
}