CODE:

import dxlib;

int map[5][5] = [
		[1,1,1,1,1],
		[1,0,1,0,1],
		[1,0,1,0,1],
		[1,0,1,0,1],
		[1,1,1,1,1],
	];

bool canRun(){
	return 
		CheckHitKey(KEY_INPUT_ESCAPE) == 0 &&
		ProcessMessage() != -1;
}

bool isHitCircle(int pX, int pY, int cX, int cY, int R){
	return
		(pX - cX)*(pX - cX) + (pY - cY)*(pY - cY) <= R*R;
}

void main(){
	ChangeWindowMode(TRUE);
	if(DxLib_Init() == -1) return;
	scope(exit) DxLib_End();
	
	int handle[2];
	LoadDivGraph("map2.png", 2, 1, 2, 38, 19, handle.ptr);
	int graph_w, graph_h;
	GetGraphSize(handle[0], &graph_w, &graph_h);
	
	int ch_handle[12];
	LoadDivGraph("chara.png", 12, 3, 4, 32, 48, ch_handle.ptr);
	
	int mouse_x=0, mouse_y=0;
	int before_x, before_y;
	int slip_x=100, slip_y=100;
	int select_x=0, select_y=0;
	
	int ch_x=0, ch_y=0;
	int ch_w, ch_h;
	GetGraphSize(ch_handle[0], &ch_w, &ch_h);
	
	SetDrawScreen(DX_SCREEN_BACK);
	while(canRun()){
		ClearDrawScreen();
		
		before_x = mouse_x;
		before_y = mouse_y;
		GetMousePoint(&mouse_x, &mouse_y);
		
		if((GetMouseInput() & MOUSE_INPUT_RIGHT) != 0){
			slip_x += mouse_x - before_x;
			slip_y += mouse_y - before_y;
		}
		
		for(int i=0; i<map.length; i++){
			for(int j=0; j<map[i].length; j++){
				if(map[i][j] == 1){
					int x = (graph_w / 2) * (j + i) + slip_x;
					int y = (graph_h / 2) * (j - i) + slip_y;
					
					int cir_x = x + graph_h;
					int cir_y = y + graph_w/4;
					int num = (isHitCircle(mouse_x, mouse_y, cir_x, cir_y, graph_h/2)) ? 1 : 0;
					
					if((GetMouseInput() & MOUSE_INPUT_LEFT) != 0 && num == 1){
						select_x = j;
						select_y = i;
						ch_x = j;
						ch_y = i;
					}
					
					DrawGraph(x, y, handle[num], TRUE);
				}
			}
		}
		
		{
			int x = (graph_w / 2) * (ch_x + ch_y) + slip_x;
			int y = (graph_h / 2) * (ch_x - ch_y) + slip_y - ch_h + graph_h/2 + 5;
			
			DrawGraph(x, y, ch_handle[1], TRUE);
		}
		
		ScreenFlip();
	}
}