Background task

task DrawBackground{
	let stageSpeed = 1;

	SetViewSettings;
	ascent(i in -5..100){
		DrawWater(i);
		DrawGrass(i);
		DrawRoad(i);
		DrawBank(i);
	}

	task SetViewSettings{
		SetCameraFocusXYZ(0, 0, 0);
		SetCameraRadius(675);
		SetCameraElevationAngle(145);
		SetFogEnable(true);
		SetFogParam(675, 1250, 128, 32, 255);
		SetCameraAzimuthAngle(0);
	}

	task DrawRoad(XDistance){
		let objRoad = ObjPrim_Create(OBJ_SPRITE_3D);
		let slideX = XDistance*256;

		ObjPrim_SetTexture(objRoad, road);
		Obj_SetRenderPriority(objRoad, 0.21);
		ObjSprite3D_SetSourceDestRect(objRoad, 0, 0, 256, 256);
		ObjRender_SetAngleXYZ(objRoad, 90, 90, 0);

		while(!Obj_IsDeleted(objBoss)){
			ObjRender_SetPosition(objRoad, slideX, 15, -192);

			slideX-=stageSpeed;
			yield;
		}
	}

	task DrawBank(XDistance){
		let objBank = ObjPrim_Create(OBJ_SPRITE_3D);
		let slideX = XDistance*256;

		ObjPrim_SetTexture(objBank, bank);
		Obj_SetRenderPriority(objBank, 0.21);
		ObjSprite3D_SetSourceDestRect(objBank, 0, 0, 256, 256);
		ObjRender_SetAngleXYZ(objBank, 90, 90, 0);

		while(!Obj_IsDeleted(objBoss)){
			ObjRender_SetPosition(objBank, slideX, 15, -444);

			slideX-=stageSpeed;
			yield;
		}
	}

	task DrawGrass(XDistance){
		let objMoss1 = ObjPrim_Create(OBJ_SPRITE_3D);
		let slideX1 = XDistance*126+64;
		let slideX2 = XDistance*126;

		ObjPrim_SetTexture(objMoss1, plant);
		Obj_SetRenderPriority(objMoss1, 0.21);
		ObjSprite3D_SetSourceDestRect(objMoss1, 0, 1, 64, 127);
		ObjRender_SetAngleXYZ(objMoss1, 90, 90, 0);

		let objMoss2 = ObjPrim_Create(OBJ_SPRITE_3D);

		ObjPrim_SetTexture(objMoss2, plant);
		Obj_SetRenderPriority(objMoss2, 0.21);
		ObjSprite3D_SetSourceDestRect(objMoss2, 0, 1, 64, 127);
		ObjRender_SetAngleXYZ(objMoss2, 90, 90, 0);

		while(!Obj_IsDeleted(objBoss)){
			ObjRender_SetPosition(objMoss1, slideX1, 10, -72);
			ObjRender_SetPosition(objMoss2, slideX2, 10, -72);

			slideX1-=stageSpeed;
			slideX2-=stageSpeed;
			yield;
		}
	}

	task DrawWater(XDistance){
		let objWater1 = ObjPrim_Create(OBJ_SPRITE_3D);
		let slideX1 = XDistance*256;
		let slideZ1 = 128;

		ObjPrim_SetTexture(objWater1, water);
		Obj_SetRenderPriority(objWater1, 0.20);
		ObjSprite3D_SetSourceDestRect(objWater1, -20000, 0, 20000, 256);
		ObjRender_SetAngleXYZ(objWater1, 90, 90, 0);
		ObjRender_SetAlpha(objWater1, 255);

		let objWater2 = ObjPrim_Create(OBJ_SPRITE_3D);
		let slideX2 = XDistance*256-32;
		let slideZ2 = 128;

		ObjPrim_SetTexture(objWater2, water);
		Obj_SetRenderPriority(objWater2, 0.20);
		ObjSprite3D_SetSourceDestRect(objWater2, -20000, 0, 20000, 256);
		ObjRender_SetAngleXYZ(objWater2, 90, 90, 0);
		ObjRender_SetAlpha(objWater2, 128);

		while(!Obj_IsDeleted(objBoss)){
			ObjRender_SetPosition(objWater1, slideX1, -50, slideZ1);
			ObjRender_SetPosition(objWater2, slideX2, -50, slideZ2);

			slideX1-=stageSpeed;
			slideX2-=stageSpeed;
			slideZ1-=0.25;
			slideZ2+=0.25;
			yield;
		}
	}
}